OM210115b

Prévia do material em texto

Operating Manual
COMBO 20
V. January 2021
Confidential
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
i
Contents
List of figures vi
List of charts viii
Introduction 1
Warranty - Standard Conditions 2
0.1 General warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety information 5
0.2 Safety Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
0.3 Safety procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
0.4 Security rules for R134a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1 General information 14
1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.2 Specifications and capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
1.3 Shipping the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
1.4 Storing the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
2 Operating instruction 37
2.1 Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2.2 User PLC Display Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2.3 PLC Display Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
3 Maintenance 68
3.1 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
3.2 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
3.3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
4 Parts List 123
4.1 Nomenclature 1237909: COMBO 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
4.2 Nomenclature 1237910: Cooling group . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
CONTENTS
4.3 Nomenclature 1237911: Airflow system . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
4.4 Nomenclature 1237912: Coil box A assembly . . . . . . . . . . . . . . . . . . . . . . . 134
4.5 Nomenclature 1237913: Coil box B assembly . . . . . . . . . . . . . . . . . . . . . . . 138
4.6 Nomenclature 1238038: Condenser A assembly . . . . . . . . . . . . . . . . . . . . . . 140
4.7 Nomenclature 1238039: Condenser B assembly . . . . . . . . . . . . . . . . . . . . . . 142
4.8 Nomenclature 1250086: Piping circuit A assembly . . . . . . . . . . . . . . . . . . . . 144
4.9 Nomenclature 1250087: Piping circuit B assembly . . . . . . . . . . . . . . . . . . . . 148
4.10 Nomenclature 1243834: Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . 152
4.11 Nomenclature 1237914: Electrical assembly . . . . . . . . . . . . . . . . . . . . . . . . 155
4.12 Nomenclature 1242369: VFD assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
4.13 Nomenclature 1242370: BLOWER VFD assembly . . . . . . . . . . . . . . . . . . . . 161
4.14 Nomenclature 1242371: CONDENSER FANS VFD assembly . . . . . . . . . . . . . . 163
4.15 Nomenclature 1244021: Condensate assembly . . . . . . . . . . . . . . . . . . . . . . . 165
4.16 Nomenclature 1244022: Electrical parts cooling system . . . . . . . . . . . . . . . . . . 167
4.17 Nomenclature 1238040: Bodywork assembly . . . . . . . . . . . . . . . . . . . . . . . . 171
4.18 Nomenclature 1244038: Signs assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
4.19 Nomenclature 1238927: Generator set . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
– ii –
Operating Manual
COMBO 20
V. January 2021
iii
List of Figures
Chapitre 1 14
1.1 COMBO 20 GPU and ACU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.2 COMBO 20 Hose adapter on aircraft fuselage . . . . . . . . . . . . . . . . . . . . . . 16
1.3 COMBO 20 Micro-perforated textile hose . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.4 Location of the main components - right side . . . . . . . . . . . . . . . . . . . . . . . 18
1.5 Location of the main components - left side . . . . . . . . . . . . . . . . . . . . . . . . 19
1.6 Refrigeration system schematic (PID) . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
1.7 Towbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
1.8 PV90-4 location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
1.9 Pre-filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.10 Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.11 Cooling groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1.12 Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
1.13 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
1.14 Physical Characteristics of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
1.15 Physical Characteristics of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
1.16 Forklift passage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Chapter 2 37
2.1 Operating station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2.2 Start-up screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2.3 Generator information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2.4 Alarms generator messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2.5 Aircraft selection Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2.6 Airbus selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2.7 Boeing selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2.8 Others selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2.9 Operating mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.10 Start button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.11 Unit main screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
LIST OF FIGURES
2.12 Unit main screen information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2.13 Timing for the complete stopping of the unit . . . . . . . . . . . . . . . . . . . . . . . 45
2.14 End of the unit stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
2.15 Access to the maintenance view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
2.16 Registration for the administration area . . . . . . . . . . . . . . . . . . . . . . . . . . 46
2.17 ID registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
2.18 ID Validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
2.19 Information on the maintenance screen .. . . . . . . . . . . . . . . . . . . . . . . . . . 48
2.20 Maintenance Screen options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
2.21 Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
2.22 Engine information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
2.23 GPU main screen 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2.24 GPU main screen 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2.25 GPU failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2.26 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
2.27 Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
2.28 Inputs States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
2.29 Outputs States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
2.30 Sensors information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2.31 Information Graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2.32 Information bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
2.33 Bus Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
2.34 Alarms speed controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
2.35 Alarms archive speed controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
2.36 Bus condenser fans A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2.37 Bus condenser fans B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2.38 Bus electronic valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
2.39 Expansion valve Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
2.40 Expansion valve Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
2.41 Expansion valve Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
2.42 Expansion valve Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
2.43 Information Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
2.44 Alarms Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
2.45 Current Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
2.46 Archival Storage Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
2.47 Alarms: Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
2.48 Settings Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
2.49 Settings: Languages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
2.50 Settings: Time configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
2.51 Settings: Hourmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
2.52 Help Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
2.53 Help Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
2.54 Alarms Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
– iv –
Operating Manual
COMBO 20
V. January 2021
LIST OF FIGURES
Chapter 3 68
3.1 Prefilters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
3.2 Unlocking hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.3 Opening hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.4 Pulling out prefilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.5 Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.6 Pulling out filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
3.7 Diesel Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
3.8 Compressor elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
3.9 Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
3.10 Wheels screw torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
3.11 Engine Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
3.12 GPU fault screen display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
3.13 SPN / FMI code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Chapitre 4 123
4.1 1237909: COMBO 20 - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
4.2 1237909: COMBO 20 - View 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
4.3 1237909: COMBO 20 - View 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
4.4 1237910: Cooling group - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
4.5 1237910: Cooling group - View 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
4.6 1237910: Cooling group - View 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
4.7 1237910: Cooling group - View 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
4.8 1237911: Air flow system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
4.9 Coil Box A assembly: 1237912 - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 134
4.10 Coil Box A assembly: 1237912 - View 2 . . . . . . . . . . . . . . . . . . . . . . . . . . 135
4.11 Coil Box B assembly: 1237913 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
4.12 1238038: Condenser 1 assembly - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 140
4.13 1238039: Condenser 2 assembly - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 142
4.14 Piping circuit A assembly - View 1: 1250086 . . . . . . . . . . . . . . . . . . . . . . . . 144
4.15 Piping circuit A assembly - View 2: 1250086 . . . . . . . . . . . . . . . . . . . . . . . . 145
4.16 Piping circuit A assembly - View 3: 1250086 . . . . . . . . . . . . . . . . . . . . . . . . 146
4.17 Piping circuit B assembly - View 1: 1250087 . . . . . . . . . . . . . . . . . . . . . . . . 148
4.18 Piping circuit B assembly - View 2: 1250087 . . . . . . . . . . . . . . . . . . . . . . . . 149
4.19 Piping circuit b assembly - View 3: 1250087 . . . . . . . . . . . . . . . . . . . . . . . . 150
4.20 Instrumentation: 1243834 - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
4.21 Instrumentation: 1243834 - View 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
4.22 Electrical assembly: 1237914 - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
4.23 Electrical assembly: 1237914 - View 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
4.24 Electrical assembly: 1237914 - View 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
4.25 VFD assembly: 1242369 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
4.26 BLOWER VFD assembly: 1242370 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
4.27 CONDENSER FANS VFD assembly: 1242371 . . . . . . . . . . . . . . . . . . . . . . . 163
4.28 CONDENSATE ASSEMBLY: 1244021 . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
4.29 Electrical parts cooling system - View 1: 1244021 . . . . . . . . . . . . . . . . . . . . . 167
4.30 Electrical parts cooling system - View 2: 1244021 . . . . . . . . . . . . . . . . . . .. . 168
– v –
Operating Manual
COMBO 20
V. January 2021
LIST OF FIGURES
4.31 Electrical parts cooling system - View 3: 1244021 . . . . . . . . . . . . . . . . . . . . . 169
4.32 1238040: Bodywork - View 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
4.33 1238040: Bodywork - View 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
4.34 Signs assembly - View 1: 1244038 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
4.35 Signs assembly - View 2: 1244038 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
4.36 1238927: Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
– vi –
Operating Manual
COMBO 20
V. January 2021
vii
List of Tables
Safety information 5
1 Safety Hazards and precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Physical and chemical properties of R134a . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapitre 1 14
1.1 Refrigeration system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
1.2 Physical characteristics of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
1.3 Capacity data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
1.4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
1.5 Refrigeration data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
1.6 Unit regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 2 37
Chapter 3 68
3.1 Consumable material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
3.2 Support test equipments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
3.3 Cooling unit maintenance planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
3.4 Internal generator maintenance planning . . . . . . . . . . . . . . . . . . . . . . . . . . 88
3.5 Troubleshooting chart for unit failures . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Chapitre 4 123
4.1 Nomenclature 1237909: COMBO 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
4.2 Nomenclature 1237910: Cooling group . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
4.3 Nomenclature Air flow system: 1237911 . . . . . . . . . . . . . . . . . . . . . . . . . . 133
4.4 Nomenclature 1237912: Coil box A assembly . . . . . . . . . . . . . . . . . . . . . . . 137
4.5 Nomenclature 1237913: Coil box B assembly . . . . . . . . . . . . . . . . . . . . . . . 139
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
LIST OF TABLES
4.6 Nomenclature Condenser A assembly: 1238038 . . . . . . . . . . . . . . . . . . . . . . 141
4.7 Nomenclature Condenser B assembly: 1238038 . . . . . . . . . . . . . . . . . . . . . . 143
4.8 Nomenclature Piping circuit A assembly: 1250086 . . . . . . . . . . . . . . . . . . . . 147
4.9 Nomenclature Piping circuit B assembly: 1250087 . . . . . . . . . . . . . . . . . . . . 151
4.10 Nomenclature 1243834: Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . 154
4.11 Nomenclature Electrical assembly: 1237914 . . . . . . . . . . . . . . . . . . . . . . . . 158
4.12 Nomenclature VFD assembly: 1242369 . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
4.13 Nomenclature BLOWER VFD assembly: 1242370 . . . . . . . . . . . . . . . . . . . . 162
4.14 Nomenclature CONDENSER FANS VFD assembly: 1242371 . . . . . . . . . . . . . . 164
4.15 Nomenclature 1244021: CONDENSATE ASSEMBLY . . . . . . . . . . . . . . . . . . 166
4.16 Nomenclature 1244022: Electrical parts cooling system . . . . . . . . . . . . . . . . . . 170
4.17 Nomenclature Bodywork assembly: 1238040 . . . . . . . . . . . . . . . . . . . . . . . . 173
4.18 Nomenclature 1244038: Signs assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
4.19 Nomenclature 1238927: GENERATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
– viii –
Operating Manual
COMBO 20
V. January 2021
1
Introduction
This manual has been prepared to familiarize Ground Support personnel with the procedures involved
in safety operating and maintaining the COMBO 20 manufactured by Lebrun .
The manual contains a description of the COMBO 20 combined with general operating principles,
instructions for operation and maintenance and a troubleshooting section. An illustrated parts list is
provided to assist in identifying the major assemblies and their replaceable parts.
This manual should be read and understood by all who are likely to be involved in the operation
and maintenance of the COMBO 20 before the unit is used for the first time. The manual should be
kept readily available so Ground Support personnel may refer to it when a question arises.
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
2
Warranty - Standard Conditions
0.1 General warranty
See next page for our General Warranty Conditions.
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
 
1 
 
 GENERAL WARRANTY CONDITIONS 
 
This document presents the warranty conditions offered to any customer for any piece of equipment manufactured in a TLD facility 
and sold to such customer through the authorized TLD Sales and Services network. The provisions relating to the warranty 
hereunder shall be in lieu of all other warranties and conditions, express or implied, provided by statute, common law or otherwise, 
to the extent permitted by law. 
The general warranty conditions hereunder govern the relationship between final customer of a TLD product, hereunder called 
the « BUYER » and TLD factory, called the « MANUFACTURER », following the sale of new product manufactured by the 
MANUFACTURER, through an authorized TLD Sales and Services organization, called the « SELLER». 
The fact that the BUYER places an order of a TLD product means that he has read the present policy and does accept its 
provisions, including the specific warranty terms associated to the iBS Products (if applicable). Any other general or specific 
provisions that differ from or contradict one of the general or specific conditions described hereinafter which may appear in any 
document from the BUYER and especially in its general purchasing conditions, cannot be used against the MANUFACTURER or 
the SELLER unless accepted by TLD in a written agreement. 
The operating hours defined in the warranty documents are referring to hours with the equipment ignition switch ON (called the 
“HOURS”). In the specific case of a remotely operated or autonomous vehicle, the supervised hours are included in the warranty 
(e.g., Hours when the software is active and the equipment is supervised by the software). 
ARTICLE 1: 
TLD warrants that each new item of equipment is of good workmanship and is free from mechanical defects provided that: 
1) The product is installed, maintained and operated in accordance with TLD Equipment’s specifications and instructions; 
2) The product is used under normal operating conditions, for which it is designed; 
3) The product is not subject to misuse, negligence or accident; 
4) The product receives proper care, lubrication, protection and maintenance under the supervision of trained personnel; 
5) The product is normally protected from exterior aggressionswhatever their origin and has appropriate storage 
conditions. 
TLD excludes any warranty on the products for normal wear and tear. 
ARTICLE 2: 
This warranty expires, unless otherwise agreed by TLD in a special provision, 27 months after shipment from the 
MANUFACTURER’s location, or 24 months after being placed in service, or after 2000 HOURS if the main engine of the unit is 
under 50kW or 3000 HOURS if main engine of the unit is above 50kW, whichever first occurs. The warranty claims are only 
considered after full payment of the equipment by the BUYER to the SELLER. 
ARTICLE 3: 
This warranty is strictly limited to the replacement of defective parts or if the repair does justify it, to the assistance of a technician. 
Parts shipping expenses, traveling and housing expenses of SELLER personnel are to be paid by the BUYER. 
ARTICLE 4: 
This warranty does not apply to fluids, oils, fuses, bulbs, accumulators, paint, seals, tires, bumpers, pads, fire detection and fire 
extinguishing associated items and other consumables or normally wearing type items unless found to be defective prior to use. 
In the specific case of Electric GSE, or any battery driven equipment, the warranty of the battery is limited to the battery supplier 
terms, unless TLD has proposed the battery as an integral part of the equipment and the battery is branded TLD. 
The battery warranty is also automatically void in the following cases: 
• The battery is connected to a charger or a charging system that has not been specified or approved by TLD, set as per 
TLD Instructions and commissioned together with the TLD Equipment by a TLD Technician. 
• The battery system is including electrical accessories that are not manufactured or sold by TLD or for use with the Vehicle 
or any other electrical energy consuming devices installed directly to the battery pack 
• The battery shows indications that the battery pack was disassembled, opened, or tampered with in any way 
• The battery containing lithium battery packs is not paired with the battery management system as supplied by TLD 
In the case of batteries containing lithium battery packs, the customer understand that the hour considered in the hour 
limitation are the hours clocked by the Battery Management System and not the hours clocked by the vehicle. 
ARTICLE 5: 
All warranty claims from the BUYER must be sent by written document to the SELLER who will be in charge of dealing with the 
MANUFACTURER to address the problem in a timely manner. 
 
DMS#358 rev 2
 
2 
 
ARTICLE 6: 
All the expenses related to a warranty claim will be invoiced to the BUYER until the MANUFACTURER employees have evaluated 
the claim. Whatever the circumstances, the BUYER should not refuse or delay the payment. If the evaluation concludes to the 
MANUFACTURER’s full responsibility, a credit memo will be issued in favor of the BUYER. Under no circumstance other than 
those accepted by TLD, warranty claim can be accepted without a formal letter from the BUYER and without the effective return 
of the defective parts at the MANUFACTURER address. 
ARTICLE 7: 
This warranty is extended by TLD only to the BUYER of new products from TLD or from its authorized distributors. The products 
purchased under this warranty are intended for use exclusively by the BUYER and his employees and by no other person. 
Therefore, this warranty is not assignable and there shall be no third party beneficiary of this warranty. 
ARTICLE 8: 
This warranty does only apply to the primeval reason. In other words, the consequences on the product linked to its use after first 
problem are not covered by the TLD warranty. 
ARTICLE 9: 
Under no circumstances whatsoever shall the MANUFACTURER and the SELLER be liable for any indirect, special or 
consequential damages, whether based on lost goodwill, lost resale profits, work stoppage, impairment of other goods or 
otherwise, and whether arising out of breach of any express or implied warranty, breach of contract, negligence or otherwise, 
except only in the case of death or personal injury as may be required by applicable law. 
ARTICLE 10: 
This warranty is automatically void in the following cases: 
1) The product has received some modification, not advised by TLD or not done following TLD requirements; 
2) The BUYER has not applied on the product applicable Technical Bulletins; 
3) Some original parts have been replaced by parts not provided by TLD. 
ARTICLE 11: 
Products which includes the intelligent battery system (“iBS Products”), shall also be subject to a separate warranty (the “iBS 
Limited Warranty”), which is complementary to these general warranty conditions. In case of any controversy between this general 
warranty and the iBS Limited Warranty, the iBS Limited Warranty shall prevail to the extent of the matter in controversy. These 
general warranty conditions shall still be applicable to any equipment on which the iBS Products are installed in. 
 
ARTICLE 12: 
This warranty including all undertaking of the MANUFACTURER, shall be governed by the laws of the MANUFACTURER’s 
country and discussed in front of nearest court from any dispute arising out of or in connection with the terms and conditions set 
forth herein shall be submitted to the competent courts of the jurisdiction of the MANUFACTURER’s facility, even including in 
cases of multiple defendants. 
 
 
TLD General Warranty Conditions – June 2020 
DMS#358 rev 2
Operating Manual
COMBO 20
V. January 2021
5
Safety information
This section contains information regarding the safe operation of the COMBO 20 . It is imperative
that the procedures in this section be followed to avoid damage to equipment or injury to personnel.
Always familiarize new operating personnel with the COMBO 20 regardless of whether they have
operated similar equipment in the past.
All personnel who come in contact with the COMBO 20 should read and abide by the instructions
on placards which display words such as WARNING, CAUTION, NOTICE or ATTENTION.
Particular attention should be called to these placards when training personnel. Safe practice requires
that everyone involved be alert to the status of the equipment and its surroundings.
0.2 Safety Hazards
Listed in table 1 are some potential safety hazards to be considered when operating the COMBO 20
followed by suggestions on how to avoid them.
Table 1: Safety Hazards and precautions
Area for hazards Potential hazard Precaution
Towing the unit into
position to use it
Towing the unit excessively fast. Do not exceed 30 km/h when towing
the unit
Operating the unit. Operating the unit with parking
brake released
Engage parking brake before starting
the unit.
Operating the unit. Operating the unit with access doors
open or panels removed.
Be sure all access doors are securely
latched and all panels in place before
starting the unit.
Air delivery hose. Operating the unit with the air de-
livery hose improperly connected or
unsecured.
Connect the hose securely to the air-
craft before starting the unit.
Servicing the unit. Operating the unit during mainte-
nance and service.
Disconnect the ground switch before
attempting maintenance or service.
High air velocity Operating the unit without connect-
ing the hoses
Do not direct air hoses to a person.
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
Safety information
0.3 Safety procedures
The safety procedures set forth in this manual should be followed at all times to prevent equipment
damage or injury to personnel. Proper safety equipment should always be used when maintaining or
servicing the unit. If there is a question concerning safety that is not covered in this manual, please
contact the manufacturer.
0.3.1 Pre-start
1. Inspect theunit for obvious signs of damage.
2. Be sure all routine maintenance has been performed.
3. Check to see that no personnel are placed in danger when the unit is operated.
4. Insure that the parking brake will fully engage and not allow the unit to roll when it is operating.
5. Make sure that aircraft air delivery hose is properly attached to the aircraft and will not break
free under pressure.
0.3.2 Operating the unit
1. Follow all operating instructions when operating the unit.
2. Do not attempt to move the unit while it is running or connected to the aircraft.
3. Do not climb into or on the unit while it is operating.
4. Do not open access door or remove panels while the unit is running or attempt to operate the
unit with doors and panels open.
5. Always remain alert to warning lights, audible alarms and warning placards while operating the
unit.
6. Do not operate the unit with the air delivery hose disconnected from the aircraft.
7. Locate the unit as far as possible from the aircraft (protection in case of fire).
0.3.3 Stopping the unit
1. Follow the stopping instructions on the operating instruction placard when terminating opera-
tions
– 6 –
Operating Manual
COMBO 20
V. January 2021
Safety information
0.3.4 Maintenance
1. Disconnect the ground switch to prevent accidental starting when servicing the unit.
2. Use only correct replacement parts. Proper replacement parts can be obtained by contacting
the manufacturer.
3. Do not alter the structure or design of the unit in any way. Doing so may void all warranties
and render the unit unsafe for operation.
4. Do not defeat safety guards placed within the unit. If they must be removed to facilitate service,
be sure they are properly replaced before operating the unit.
5. Allow the unit to cool completely before performing service. Hot surfaces can cause injury to
service personnel.
6. Replace any burned out warning lamps or clearance lights before returning the unit to service.
7. Replace any warning placards which become unreadable.
– 7 –
Operating Manual
COMBO 20
V. January 2021
Safety information
0.4 Security rules for R134a
0.4.1 Emergency and Product identification
0.4.1.1 Emergency phone numbers
• Europe: 112
• North America: 911
• Brazil: 192
0.4.1.2 Product
Product name: Forane(R) 134a
Chemical family: Hydrofluorocarbon
Chemical formula: CF3CH2F
Chemical name: 1,1,1,2-Tetrafluoroethane (HFC - 134a)
Product Use: Refrigerant
0.4.2 Composition / information on ingredients
Chemical name 1,1,1,2-Tetrafluoroethane
CAS 811-97-2
EINECS 212-377-0
0.4.3 Hazard identification
0.4.3.1 Emergency overview
Clear, colorless liquefied gas with faint etheral (ether like) odor.
WARNING! LIQUID AND GAS UNDER PRESSURE, OVERHEATING AND
OVERPRESSURIZING MAY CAUSE GAS RELEASE OR VIOLENT CYLINDER
BURSTING. MAY DECOMPOSE ON CONTACT WITH FLAMES OR
EXTREMELY HOT METAL SURFACES TO PRODUCE TOXIC AND CORROSIVE
PRODUCTS. VAPOR REDUCES OXYGEN AVAILABLE FOR BREATHING AND
IS HEAVIER THAN AIR. HARMFUL IF INHALED AND MAY CAUSE HEART
IRREGULARITIES, UNCONSCIOUSNESS OR DEATH. LIQUID CONTACT WITH
EYES OR SKIN MAY CAUSE FROSTBITE.
– 8 –
Operating Manual
COMBO 20
V. January 2021
Safety information
0.4.3.2 Potential health effects
Inhalation and skin contact are expected to be the primary routes of occupational exposure to this
material. As with most liquefied gases, contact with the rapidly volatilizing liquid or cold vapor can
cause frostbite to any tissue. High vapor concentrations are irritating to the eyes and respiratory
tract and may result in central nervous system (CNS) effects such as headache, dizziness, anaesthesia,
drowsiness and, in severe exposure, loss of consciousness and death. The dense vapor of this material
may reduce the available oxygen for breathing and produce symptoms such as headache, dizziness,
drowsiness, cyanosis and lack of muscle control followed by collapse. Prolonged exposure to an oxygen-
deficient atmosphere may be fatal. Inhalation of this material may cause an increase in the sensitivity
of the heart to adrenaline, which could result in irregular or rapid heartbeats and reduced heart
function. Workers with heart disease or compromised heart function should limit exposure to this
material.
0.4.4 First aid measures
IF IN EYES
Immediately flush with plenty of water. Get medical attention if irritation persists.
IF ON SKIN
Flush exposed skin with lukewarm water (not hot), or use other means to warm skin slowly. Get
medical attention if frostbitten by liquid or if irritation occurs.
IF SWALLOWED
Not applicable - product is a gas at ambient temperatures.
IF INHALED
Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Get medical attention. Do not give adrenaline, epinephrine or similar drugs following exposure to this
product.
0.4.5 Fire fighting measures
0.4.5.1 Fire and explosive properties
Auto-Ignition Temperature 743 [oC] (1 bar)
Flash Point NA - GAS (Flash Point Method)
Flammable Limits - Upper NA
0.4.5.2 Extinguishing Media
Use extinguishing media appropriate to surrounding fire conditions.
– 9 –
Operating Manual
COMBO 20
V. January 2021
Safety information
0.4.5.3 Fire fighting instructions
Stop the flow of gas if possible. Use water spray on person making shut-off. Fire fighters and others
who may be exposed to products of combustion should wear full fire fighting turn out gear (full Bunker
Gear) and self-contained breathing apparatus (pressure demand NIOSH approved or equivalent). Fire
fighting equipment should be thoroughly decontaminated after use.
0.4.5.4 Fire and explosion hazards
May decompose on contact with flames or extremely hot metal surfaces to produce toxic and corrosive
products. Liquid and gas under pressure, overheating or over-pressurizing may cause gas release
and/or violent cylinder bursting. Container may explode if heated due to resulting pressure rise.
Some mixtures of HCFCs and/or HFCs, and air or oxygen may be combustible if pressurized and
exposed to extreme heat or flame.
0.4.6 Accidental release measures
0.4.6.1 In case of spill or leak
Use Halogen leak detector or other suitable means to locate leaks or check atmosphere. Keep it
upwind. Evacuate enclosed spaces and disperse gas with floor-level forced-air ventilation. Exhaust
vapors outdoors. Do not smoke or operate internal combustion engines. Remove flames and heating
elements.
0.4.7 Handling and storage
0.4.7.1 Handling
Avoid breathing gas. Avoid contact with eyes, skin and clothing. Keep container closed. Use only
with adequate ventilation. Do not enter confined spaces unless adequately ventilated.
0.4.7.2 Storage
Do not apply direct flame to cylinder. Do not store cylinder in direct sun or expose it to heat above
120 F. Do not drop or refill this cylinder. Keep away from heat, sparks and flames.
0.4.8 Exposure controls / Personal protection
0.4.8.1 Engineering controls
Investigate engineering techniques to reduce exposures below airborne exposure limits. Provide venti-
lation if necessary to control exposure levels below airborne exposure limits (see below). If practical,
use local mechanical exhaust ventilation at sources of air contamination such as open process equip-
ment.
0.4.8.2 Eye / face protection
Where there is potential for eye contact, wear chemical goggles and have eye flushing equipment
available.
– 10 –
Operating Manual
COMBO 20
V. January 2021
Safety information
0.4.8.3 Skin protection
Wear appropriate chemical resistant protective clothing and chemical resistant gloves to prevent skin
contact. Consult glove manufacturer to determine appropriate type glove material for given applica-
tion. Rinse contaminated skin promptly. Wash contaminated clothing and clean protective equipment
before reuse. Wash skin thoroughly after handling.
0.4.8.4 Respiratory protection
Avoid breathing gas. When airborne exposure limits are exceeded (see below), use NIOSH approved
respiratory protection equipmentappropriate to the material and/or its components (full face piece
recommended). Consult respirator manufacturer to determine appropriate type equipment for a given
application. Observe respirator use limitations specified by NIOSH or the manufacturer. For emer-
gency and other conditions where exposure limit may be significantly exceeded, use an approved full
face positive-pressure, self-contained breathing apparatus or positive-pressure airline with auxiliary
self-contained air supply. Respiratory protection programs must comply with 29 CFR § 1910.134.
0.4.8.5 Airborne exposure guidelines for ingredients
1,1,1,2-Tetrafluoroethane (HFC-134a) WEEL TWA: 1000 [ppm] 4240 [mg/m3]
0.4.9 Physical and chemical properties
For physical and chemical properties, see table 2.
Table 2: Physical and chemical properties of R134a
Appearance/Odor Clear, colorless liquefied gas with faint ethe-
real (ether like) odor
pH NA
Specific Gravity 1,21 [kg/dm3](@ 4 [oC])
Vapor Pressure 6,66 [bar] (@ 25 [oC])
Vapor Density 3.25 [kg/m3]
Melting point NA
Freezing Point -101 [oC] (-149,8 [o]F)
Boiling Point -26,4 [oC] (-15,5 [o]F)
Solubility In Water 0,9 [g/l] (@ 25 [oC])
Molecular Weight 102.03 [g/mol]
Bulk Density 1,21 [g/cm3] (@ 25 [oC])
n-Octanol/Water Partition Coefficient log Pow: 1,06
Decomposition temperature 370 [oC] ( 700 [o]F)
Critical temperature 101 [oC]
Critical pressure 40,7 [bar]
GWP 1430
– 11 –
Operating Manual
COMBO 20
V. January 2021
Safety information
0.4.10 Stability and reactivity
0.4.10.1 Stability
This material is chemically stable under specified conditions or storage, shipment and/or use. See
section 0.4.7”HANDLING AND STORAGE” of this MSDS for specified conditions.
0.4.10.2 Incompatibility
Avoid contact with strong alkalis or alkaline earth metals, finely powdered metals such as aluminium,
magnesium or zinc and strong oxidizers, since they may react or accelerate decomposition.
0.4.10.3 Hazardous decomposition product
Thermal decomposition products include hydrogen fluoride, hydrogen chloride, carbon monoxide,
carbon dioxide and chlorine.
0.4.11 Toxicological information
No skin allergy was observed in guinea pigs following repeated exposure. Acute inhalation exposure
produced anaesthetic effects in mice, dogs, cats and monkeys. Repeated inhalation exposure produced
no adverse effects in rats. Inhalation of this material, followed by intravenous injection of epinephrine
to simulate stress reactions, resulted in cardiac sensitization in dogs. Following long-term inhalation
studies in rats, an increased incidence of benign tumours (at high concentrations) in the testes were
the only tumours observed. No birth defects were noted in the offspring of rats exposed to this mate-
rial by inhalation during pregnancy, even at dosages which produced significant adverse effects in the
mother. This material produced no genetic changes in standard tests using bacterial or animal cells
and whole animals.
Single exposure (acute) studies indicate:
• Inhalation: Practically Non-toxic to Rats (4-hr LC50 >500 000 ppm; 30-min LC50 > 750 000
ppm)
• Eye Irritation: Slightly Irritating to Rabbits
• Skin Irritation: Slightly Irritating to Rabbits (24-hr exposure)
0.4.12 Ecological informations
0.4.12.1 Ecotoxicological information
This material is practically non-toxic to Daphnia magna (48-hr EC50 930 mg/l), rainbow trout (96-hr
LC50 450 mg/l) and bacteria (16-hr EC10 > 730 mg/l).
0.4.12.2 Chemical fate information
This material is not readily biodegradable (3 % after 28-days). Its degradation half-life in the atmo-
sphere is 9.6-16.7 years. The ozone depletion potential (ODP) is 0 and the halo-carbon global warming
potential (HGWP) is 0,3. It is practically not bioaccumulable (log Pow 1.06).
– 12 –
Operating Manual
COMBO 20
V. January 2021
Safety information
0.4.13 Waste disposal
Recover, reclaim or recycle when practical. Dispose of in accordance with federal, state and local
regulations.
Note: Chemical additions to, processing of, or otherwise altering this material may make this waste
management information incomplete, inaccurate, or otherwise inappropriate. Furthermore, state and
local waste disposal requirements may be more restrictive or otherwise different from federal laws and
regulations.
0.4.14 Transport information
• DOT Name: 1,1,1,2-tetrafluoroethane
• DOT hazard class: 2.2
• UN number: UN 3159
• DOT packing group: PG NA
• RQ
NO WARRANTY OF FITNESS FOR ANY PARTICULAR PURPOSE, WARRANTY
OF MERCHANTABILITY, OR ANY OTHER WARRANTY, EXPRESSED OR
IMPLIED, IS MADE CONCERNING THE INFORMATION PROVIDED HEREIN.
Summary:
Future improvement of the unit design may result in differences to the unit which may not be
included in the manual. The manual is periodically reviewed and any design advancements will be
appropriately reflected in later editions.
– 13 –
Operating Manual
COMBO 20
V. January 2021
14
CHAPTER 1
General information
1.1 Description
Figure 1.1: COMBO 20 GPU and ACU
1.1.1 Introduction
The COMBO 20 is a complete, self-contained, ground power unit (GPU). This unit can be also used
to cool and ventilate the aircraft cabin (ACU mode). It is totally enclosed in a weatherproof housing
mounted on a trailer.
The COMBO 20 combines a generator and air conditioner and so produces:
• 400Hz for powering aircraft on the ground. It can be used for supplying power and for mainte-
nance operations when parked or landed.
• Cold air conditioning to cool the cabins of the aircraft on the ground.
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
General information
The simultaneous use of aircraft output (200/115V - 400Hz) and air-conditioning is possible, but
is limited to the power that the engine delivers. In case of overload, the output of the aircraft has
priority over the air conditioning. During the overload, the air conditioning is on standby (shedding)
and automatically restarts at the end of the overload.
The enclosure is equipped with sufficient inspection, access and service doors to provide ready
access to components for inspection, service, and repair activities.
– 15 –
Operating Manual
COMBO 20
V. January 2021
General information
1.1.2 Principles of operation
1.1.2.1 GPU mode
The PV90-4 system located at the front side of the unit is an Electrical Ground Power Unit designed
to service modern aircraft with a 90kVA (Three Phase 200/115 VAC 400Hz) supply output derived
from the unit generator (Three Phase 480VAC 60Hz).
1.1.2.2 ACU mode
Ambient air is drawn into the blower through a set of intake filters (G4 class prefilters + F7 class
filters). The air is blowed through an air circuit which contains two cooling coils . Conditioning of
the air is controlled by a PLC that manages the operating mode sequences.
The conditioned air is then directed to the aircraft through one flexible hoses. The air is introduced
into the aircraft cabin through an adapter which connects the air delivery hose to the aircraft (see on
figure 1.2).
Figure 1.2: COMBO 20 Hose adapter on aircraft fuselage
In order to climatize aircrafts without ACU connection on fuselage, the adapter can also be con-
nected to a micro-perforated textile hose which spread the air directly inside aircraft cabin (see on
figure 1.3).
Figure 1.3: COMBO 20 Micro-perforated textile hose
– 16 –
Operating Manual
COMBO 20
V. January 2021
General information
The various modes of conditioning are described in the following paragraphs.
Cooling mode
The cooling of the air process is accomplished by a direct expansion cooling system using R134a
as a refrigerant. The cooling machine includes two cooling circuits (A or 1 is the positive circuit and
B or 2 is the negative circuit), each cooling circuits has dedicated components:
• One semi-hermeticreciprocating compressor
• One condenser (High pressure side)
• One drier filter (High pressure side)
• Two electronic expansion valves
• One cooling coil (Low pressure side)
The first evaporator has a positive evaporating temperature so that it takes out major part of hu-
midity in the air without creating any frost. Second evaporator has negative evaporating temperature
to decrease air temperature near of 0◦C.
The capacity of each compressor can be between from 50% to 100% (50-67-83-100%). A hot gas
bypass is installed on each cooling circuit in order to adjust the outlet temperature when compressor
capacity is too high compared to the cooling requirement.
Ventilation mode
In the ventilating mode, ambient air is blown through the duct and into the aircraft without
cooling. In this mode, the cooling system is inactive. The fan is controlled by a speed controller and
a differential pressure sensor. This system ensures that the air flow is always at the maximum level
accepted by the aircraft connected to the unit.
Regulation
The unit is regulated to reach the set point temperature at the aircraft connector. A temperature
sensor is fixed just in the aircraft connector at the end of flexible hose.
It allows to have the best performance and cool the aircraft with the best efficiency.
– 17 –
Operating Manual
COMBO 20
V. January 2021
General information
1.1.3 Major components & systems
The COMBO 20 is designed primarily to be trailer mounted. For the purpose of description throughout
this manual, the spatial orientation of the unit shall be based on its being so mounted. For example,
the ”FRONT” of the unit shall be considered the end having a tow bar, the ”RIGHT” of the unit is
the side with the control panel, etc.
Figure 1.4: Location of the main components - right side
2. Air flow system 3. Coil box B assembly
4. Bodywork assembly 7. Electrical assembly
10. VFD assembly 12. Generator
17. Electrical parts cooling system
– 18 –
Operating Manual
COMBO 20
V. January 2021
General information
Figure 1.5: Location of the main components - left side
1. Coil box A assembly 5. Condenser A assembly
6. Condenser B assembly 8. Cooling group
9. Instrumentation 11. Condensate assembly
15. Copper piping A 16. Copper piping B
– 19 –
Operating Manual
COMBO 20
V. January 2021
General information
Figure 1.6: Refrigeration system schematic (PID)
– 20 –
Operating Manual
COMBO 20
V. January 2021
General information
Table 1.1: Refrigeration system
Nomenclature
Mark (PID) Designation
1 Compressor A
2 Condenser A
3 Pressure relief valve
4 Filter drier
5 Liquid sight glass
6 Evaporator A
7 Compressor B
8 Condenser B
9 Pressure relief valve
10 Filter drier
11 Liquid sight glass
12 Liquid gas-mixer
13 Evaporator B
14 Air pre-filters (class G4)
15 Air filters (class F7)
16 Blower
17 Not on this unit
18 Not on this unit
19 Flexible hose
20 Flexible hose
21 Flexible hose
22 Flexible hose
PI 1.1 Air pressure manometer
PI 2.A Low pressure manometer for cooling circuit A
PI 2.B Low pressure manometer for cooling circuit B
PI 3.A High pressure manometer for cooling circuit A
PI 3.B High pressure manometer for cooling circuit B
PT 2.A Low pressure transmitter for cooling circuit A
PT 2.B Low pressure transmitter for cooling circuit B
PT 3.A High pressure transmitter for cooling circuit A
PT 3.B High pressure transmitter for cooling circuit B
PSH 1.1 High pressure switch - Air
PSH 3.A High pressure switch for cooling circuit A
PSH 3.B High pressure switch for cooling circuit B
DPT 1.1 Differential air pressure sensor
DPT 1.2 Filter clogging pressure switch (Option)
EV 2.-.- Compressor regulating valves
EV6.A.1 Electronic expansion valves for cooling coil A
continued on next page
– 21 –
Operating Manual
COMBO 20
V. January 2021
General information
continued from previous page
Nomenclature
Mark (PID) Designation
EV6.B.1 Electronic expansion valves for cooling coil B
EV7.- Hot gas regulation valve (CPCE)
EV7.-.- Solenoid valves for hot gas injection
TT 1.- Air temperature sensor
TT 6.- Regulation temperature sensors
M1 Blower Motor
M2.- Compressor Motor (A and B)
M3.-.- Condenser Fans Motors
SC 1 Blower Speed Controller
SC 3.- Condenser Fans Speed Controller (A and B)
– 22 –
Operating Manual
COMBO 20
V. January 2021
General information
1.1.3.1 Chassis
The COMBO 20 chassis frame is made of rectangular steel pipe and bended plate. Components of
this unit are protected by a weather resistant enclosure. This enclosure consists of an arrangement of
covers and access doors. The enclosure reduces the operational noise level in the immediate area of
the unit. Additional doors are provided for access to controls and indicators.
1.1.3.2 Towbar
The parking brake is engaged by raising the towbar on the front of the unit until it locks into place.
Figure 1.7: Towbar
1.1.3.3 Power system
Diesel engine
The COMBO 20 is driven by an internal Generator. A diesel powered engine is used to drive
the built-in alternator. The engine is located in the rear compartment. The engine is protected and
controlled by a monitoring system located in the electrical cabinet. The alternator located next to
the diesel engine is connected to the engine with a direct coupling.
The thermal engine drives the alternator, regulating the alternating generation frequency. The
electronic speed control ensures performance is maintained in steady state operation and during load
transients, in accordance with current Standards.
When the alternator is driven at rated speed by the engine, it delivers power as required by the
aircraft and the air conditioning system, up to the machine’s rated power and permitted temporary
overload. The voltage regulator maintains voltage performance in steady state operation and during
load transients, in accordance with current Standards.
Fuel for the diesel engine is supplied by a tank located under the generator. Its capacity of 470
litres insures approximately 8 hours of uninterrupted operation.
– 23 –
Operating Manual
COMBO 20
V. January 2021
General information
1.1.3.4 400 Hz Aircraft power supply
The COMBO 20 can also generate 400 Hz for aircraft (GPU operating mode). To provide 400 Hz for
aircraft, the unit is equipped with a PV90-4 at the front of the unit. It can service modern aircraft
with a 90kVA (Three Phase 200/115 VAC 400Hz) supply output derived from the unit generator
(Three Phase 480VAC 60Hz).
Figure 1.8: PV90-4 location
Lebrun recommend to use the premium cable (Lebrun reference: 1204463-060SG) for the use of
GPU mode on ATR aircraft.
– 24 –
Operating Manual
COMBO 20
V. January 2021
General information
1.1.3.5 Air flow system
Ambient air is supplied for conditioning by a centrifugal 3600 RPM high pressure blower located in
the center of the unit. It is powered by a 18.5 kW motor.
The air is delivered through 1 outlet designed to fit with 350mm hoses.
Figure 1.9: Pre-filters Figure 1.10: Filters
2 prefilters (see figure 1.9) and 2 filters (see figure 1.10) are mounted on the air intake. The filters
can be removed from the unit for cleaning or replacement.
– 25 –
Operating Manual
COMBO 20
V. January 2021
General information
1.1.3.6 Conditioning system
Compressors (PID.1 and 7)
Two reciprocating compressor (see figure 1.11) are used in the refrigeration system. It is designed
to increase pressure of the refrigerant to a level where it can be cooled by ambient air being drawn
through the condenser coil and causing condensation. The positive compressor (circuit A) is powered
by a nominal 30 kW internal motor. The negative compressor (circuit B) is powered by a nominal 22
kW internal motor.
The capacity of each compressor can be adjusted between 50 % and 100% with the regulating
valve EV2.-.- (see on the below figure).
Each compressor is protected against abnormal operating conditions by :
• a high discharge pressure cut-off switch (PID.PSH 3.-)
• a high discharge temperature (internal) cut-off
•an electronic oil level control (PID.LC 2.1) (see on figure 1.11)
Two sight glasses allow the control of the oil level in the compressor (see no1 on figure 1.11).
Figure 1.11: Cooling groups
– 26 –
Operating Manual
COMBO 20
V. January 2021
General information
Figure 1.12: Instrumentation
Condenser coils (PID.2 & 8)
Two condenser coils (see figure 1.4) are mounted on the top of the unit. It is made of copper tubes
and aluminium. The compressed gaz from the compressor is forced into the condenser coil where
the high pressure and high temperature gas is condensed into high pressure liquid. Ambient air is
drawn over the condenser coil to extract the latent heat of vaporization at the higher pressure from
the refrigerant, causing condensation.
Each condenser is equipped with 2 fans. The switching on and off of the motors of the fans are
controlled by a high pressure sensor.
– 27 –
Operating Manual
COMBO 20
V. January 2021
General information
Refrigerant piping system
The refrigerant piping system is equipped with the following accessories whose function is noted:
1. Liquid drier removes moisture from the refrigerant. The drier cores should be replaced whenever
the refrigerant system has remained open for extended periods of time.
2. Liquid sight glass to control the flow of refrigerant and the humidity in the cooling circuit. A
less than full liquid charge will be indicated by bubbles or a foaming action being seen when the
refrigeration system is in operation(n◦5 on figure 1.11). A color change in the inner ring of the
sight glass will indicate the presence of moisture in the system.
3. 2 electronic expansion valves (one for each evaporator) to control the supplied air temperature
by regulating the amount of liquid refrigerant into the evaporator in accordance with the load
requirements imposed by the ambient conditions. Each electronic expansion valve is a pressure
reducing valve used to meter the high pressure liquid into the low pressure refrigerant circuit.
Evaporators (PID.6 & PID.13)
The refrigerant liquid in the low pressure refrigerant circuit now enters the evaporator coils where
it boils by absorbing the latent heat of vaporization at the low pressure, and evaporates into a low
pressure, low temperature gas. Heat from the surrounding air is extracted through the finned tubing
of the evaporator coils by the refrigerant. The heated gas then returns to the compressor.
The evaporator is made of aluminum fins on copper tubes. It is designed to balance the refrigerant
capacity with the maximum load requirements. The evaporator is located in the air box after the fan.
1.1.3.7 Protective devices
High pressure cutout switch (PID. PSH 3.-)
The high pressure cutout switch will stop the compressor if the pressure rises above 18 bar. High
pressure condition requires an inspection of the condenser coil for obstruction and the condenser fans
motors for proper operation then all corrective action should be taken before a manual reset is done.
The manual reset is located on the high pressure switch.
Compressor high temperature
The compressor has a thermal switch to lock out operation of the compressor if the internal
temperature rises above a safe level.
Pressure relief valves
Each cooling circuits is equipped with pressure relief valve. In case the pressure switch is defective
or, when the unit is stopped, if the pressure rise above the pressure relief valve rate (due to an external
cause), the pressure relief valve will just evacuate a part of the refrigerant to reduce the pressure inside
the cooling circuit.
– 28 –
Operating Manual
COMBO 20
V. January 2021
General information
1.1.3.8 Electrical system
Figure 1.13: Control Panel
Operator station
Operating the unit is carried out from the Operator Station (see figure 1.13). A rotary switch can
be use to select the operating mode of the unit and a luminous push-button initiate the start of the
unit.
On the station, you can find:
- 1 PLC display (K80.50) to visualize all the information available on the group
- 1 red light Failure (P4)
- 1 rotary switch to Stop/Start the COMBO 20 (S1)
- 1 Start/Stop button for the Power supply (GPU mode) (400 Hz) (S7)
- 1 Start/Stop button to start the conditioning system (ACU mode) (S3)
- 1 emergency stop push-button (S50)
Operating cabinets
The electric assembly is composed of:
1. An electrical cabinet on the right side of the unit including:
• The main circuit breaker
• Circuit breakers for compressors and fan
• The PLC
– 29 –
Operating Manual
COMBO 20
V. January 2021
General information
• 4 regulators (EVD00E50) for cooling system
2. An electrical box on the front right side of the unit including:
• The circuit breaker for condenser fans
3. Variable frequency drivers for:
• Condensor fans
• Blower
4. PV90-4 at the front side of the unit
5. The engine regulator in the Genset compartment (DeepSea controller)
– 30 –
Operating Manual
COMBO 20
V. January 2021
General information
1.2 Specifications and capabilities
The COMBO 20 is designed to supply primary source of power to aircraft and preconditioned air
function to complementary provide ventilation, cold or heated air to aircraft in one single piece of
equipment.
1.2.1 Specifications
1.2.1.1 Physical characteristics
Length 5.645 mm
Width 2.520 mm
Height 2.534 mm
Weight 7.000 kg
Table 1.2: Physical characteristics of the unit
All these dimensions are shown in figure 1.14& 1.15.
Figure 1.14: Physical Characteristics of the unit
– 31 –
Operating Manual
COMBO 20
V. January 2021
General information
Figure 1.15: Physical Characteristics of the unit
– 32 –
Operating Manual
COMBO 20
V. January 2021
General information
1.2.1.2 Capacity data
Capacity data are given in table 1.3.
Air flow 0,5 to 2,0 [kg/s]
Air pressure Safety: 70 [mbar]
Control: according selected aircraft type
Design point Ambient temperature : 33◦C
Humidity : 75 %
Pulsed air temperature : 0oC
Air flow : 1,3 [kg/s]
Table 1.3: Capacity data
1.2.1.3 Electrical data
Diesel alimentation 480 [V], 185 [A], 3 phases, 60 [Hz]
Electricity supply for aircraft - AC 115 V (L-N), 90 kVA, 400 Hz
Table 1.4: Electrical data
1.2.1.4 Refrigeration data
Refrigeration data are given in table 1.5.
Compressor 2 reciprocating compressors
Refrigerant R134a
Normal charge - positive circuit 19 [kg]
Normal charge - negative circuit 13 [kg]
Table 1.5: Refrigeration data
– 33 –
Operating Manual
COMBO 20
V. January 2021
General information
1.2.1.5 Set point regulation
Regulation and security instructions are given in table 1.6.
Description Name Regulation
Positive cooling group
Evaporator pressure regulation PLC 5◦C
Compressor amperage 1 Q2A.1A 30 A
Compressor amperage 2 Q2A.1B 30 A
High pressure cut-off PSH3A 18 bar
Condensor pressure regulation PT3B 10 bar (43◦C)
Condensor fan 1 amperage Q3A.1 6 A
Condensor fan 2 amperage Q3A.2 6 A
Condensor discharge 16 bar
Negative cooling group
Air discharge temperature regulation TT1.3 0◦C
Electronic expansion Superheat: 7◦C to 11◦C
Compressor amperage 1 Q2B.1A 30 A
Compressor amperage 2 Q2B.1B 30 A
High pressure cut-off PSH3B 18 bar
Condensor pressure regulation PT3B 10 bar (43◦C)
Condensor fan 1 amperage Q3B.1 6 A
Condensor fan 2 amperage Q3B.2 6 A
Condensor discharge 16 bar
Ventilating mode
Air pressure security PSH1.1 70 mbar
Air pressure regulation SC1 + DPT1.1 depends on the aircraft
Table 1.6: Unit regulation
– 34 –
Operating Manual
COMBO 20
V. January 2021
General information
1.3 Shipping the unit
When shipping COMBO 20 the following steps should be taken to reduce the risk of the unit becoming
damaged in transit.
1.3.1 Before shipping
1. Ensure that all documents are present (Operating manual, certificates, etc.)
2. Pull all circuit breakers to the OFF position.
3. Ensure that the unit is motionless when the towbar is vertical.
4. Be sure all doors and panels are securely fastened.
5. Put on each part of the unit, a label indicating the address of thesender and recipient; the name
of the contact person and the telephone number.
6. Secure any loose items such as the air delivery hose and towbar .
7. Cover the group with a plastic film (anti-corrosion if transport by ship) along its outer surface.
1.3.2 Shipping the unit
1. Stuck the unit on a wood deck with belts on axles.
2. If you want to lift the unit with a forklift, use the forklift passage (see on figure 1.16)
3. Don’t position belts on the fuel line, electrical cables or on components!
Figure 1.16: Forklift passage
– 35 –
Operating Manual
COMBO 20
V. January 2021
General information
1.4 Storing the unit
If the unit is stored outside for a long period, it must be protected against dusts, corrosion and
moisture. It must be ventilated to avoid condensation.
It is very important to properly prepare the unit that will be stored for a long time. This prepa-
ration, before strorage, avoids possible damages from mould, rust and corrosion. In addition, a
good preparation of the unit before storage and a regular control during storage, will make the re-
commissioning easy and fast, with minimal effort and without specific problems.
1.4.1 Storing the unit
Preparation for storage
1. Pull all circuits breakers to the OFF position.
2. Place the unit on blocks to prevent dry rotting of the tires
3. Remove batteries, clean and cover the battery terminals with neutral vaseline. Then store the
battery in a separate room.
4. Drain the engine oil and full with an oil for long storage.
5. Cover the unit with a tarpaulin to prevent water, dust or debris from entering the unit while
ensuring ventilation to avoid condensation .
6. Drain the fuel tank
7. In case of moisture, it is advisable to put some desiccant bags into the electrical cabinet.
Maintenance during storage
1. Move regularly the unit to avoid deformation of tires.
2. Lift the towbar
3. Run the engine regularly (once a month)
1.4.2 Re-commissioning of the unit
1. Remove desiccant bags from the electrical cabinet,
2. Drain the oil for long storage and fill with standard engine oil,
3. Charge batteries and then reconnect to the unit,
4. Start the unit and check its operation.
– 36 –
Operating Manual
COMBO 20
V. January 2021
37
CHAPTER 2
Operating instruction
2.1 Instruction
Given below are the operating instructions for the COMBO 20 (see figure 2.1). It is imperative, for the
safety of personnel and the protection of the equipment that these instructions are followed by users.
Before using this equipment for the first time, be sure that all personnel involved in the operation and
maintenance of the COMBO 20 have carefully read and completely understood this manual.
Figure 2.1: Operating station
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.1.1 Setup
CAUTION! THIS UNIT IS CAPABLE OF PRESSURIZING A
SMALL AIRCRAFT.
• Open a cargo or passenger door of the aircraft before connecting the air delivery hose and/or
starting the unit.
• Position the unit near the aircraft so that the air delivery hose will reach the aircraft air inlet.
• Ensure the good state of the electrical cables and aircraft plug.
• Engage parking brake by raising the brake lever on the front of the unit until it locks into place.
• If the engine has not worked for a long time or if it’s new, it may be necessary to purge the air
of the fuel circuit with the manual pump (depending on the equipment). Refer to the engine
manual for more details.
• Check the oil, water and fuel level of the engine. Fill if necessary.
• Ensure that air delivery hose(s) is not kinked or twisted. A kinked air delivery hose will retard
the airflow and in extreme cases, may cause freezing of the evaporator coil and stop the unit
(high air pressure switch).
• Connect the air delivery hose to the aircraft air inlet.
• Ensure that the hose is securely fastened and will not become disconnected when air pressure is
applied.
• Connect the power cable to the aircraft if the GPU mode is required.
2.1.2 Starting the unit
• Turn the ”Unit start” button (S1) to the diesel position, the engine start.
2.1.3 GPU Mode - 400 Hz
• Press the green button GPU START/STOP (S7)
• The aircraft is powered
• To stop the GPU mode, press the green button GPU START/STOP (S7)
• Once the GPU mode is stopped, disconnect the power cable from the aircraft.
• To stop the unit, turn the ”Unit start” button (S1) to the stop position.
– 38 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.1.4 ACU Mode
• Select the aircraft type on the PLC display (HMI) (see next section 2.2 for more information)
• Select the operating mode on the HMI display.
• Push the ”Air supply START/STOP” button (S3) to the start the air supply unit.
• The unit will operate automatically. The green lamp of the ”Air supply START/STOP” button
will turn on as soon as the operating mode is activated.
• To stop the operating mode, push the ”Air supply START/STOP” button (S3) and disconnect
the hose from the aircraft.
• To stop the unit, turn the ”Unit start” button (S1) to the stop position.
– 39 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.2 User PLC Display Operation
2.2.1 Start-up Screen
At the start-up, when the unit is powered, the screen turns on.
Figure 2.2: Start-up screen
1. Go to the generator information.
2.2.2 Information of the generator
Figure 2.3: Generator information
1. Go to the menu Alarms of the generator.
– 40 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
Figure 2.4: Alarms generator messages
As soon as the communication between the display and the controller works, the display automat-
ically switches to the type of aircraft choice.
2.2.3 Aircraft selection Screen
Figure 2.5: Aircraft selection Screen
– 41 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
The choice is made by pressing the desired plane. It becomes ”GREEN” when it is selected. The
icon ”V” is used to validate the choice of aircraft.
Figure 2.6: Airbus selection Figure 2.7: Boeing selection
Figure 2.8: Others selection
– 42 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.2.4 Operating mode selection
Once the aircraft type is validated, you can select the operating mode: GPU mode and/or ”Cooling”
or ”Ventilation”:
Figure 2.9: Operating mode selection
The unit will operate automatically. Push to the ”Power supply Start/Stop” or ”Air Supply
Start/Stop” button on the control panel to start the operating mode, the green lamp of the ”Power
supply Start/Stop” or ”Air Supply Start/Stop” button will turn on as soon as it is activated.
Figure 2.10: Start button
– 43 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
Once the operating mode starts, the screen is automatically replaced by the main screen:
Figure 2.11: Unit main screen
1. Select a new operating mode
2. Select a new aircraft
3. Access to engine information
Figure 2.12: Unit main screen information
– 44 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.2.5 Stopping the unit
Turn the ”Unit start/Stop” button to the off position to stop the selected operating mode. The green
lamp of the ”Unit start/Stop” button will turn off as soon as the operating mode is deactivated. The
user is informed that the unit is shutting down. The unit will not stop until the end of the time
indicated on the screen.
Figure 2.13: Timing for the complete stopping of the unit
Please note that it is forbidden to disconnect the hoses of the plane before the full stop of the unit.
This judgment is defined by the occurence of the screen after the end of the timer.
Figure 2.14: End of the unit stop
– 45 –
Operating Manual
COMBO 20
V. January2021
Operating instruction
2.3 PLC Display Operation
2.3.1 Acces to the maintenance view
To access to the maintenance view on the display, click on the logo picture on the top right:
Figure 2.15: Access to the maintenance view
You will have the following view where you can give the USERNAME and PASSWORD.
Figure 2.16: Registration for the administration area
– 46 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
The information to access on the restricted area is:
• Username: USER
• Password: 1234
Figure 2.17: ID registration
To validate the identification, you have to
• Select the 1
• Next push on the 2
Figure 2.18: ID Validation
You will come back the main user view but when you click on the Logo picture, the access to the
maintenance view is open.
– 47 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.3.2 Maintenance Screen
Figure 2.19: Information on the maintenance screen
Status Description
Connected The PLC is connected
Cooling mode ON Cooling mode started
Ventilation mode ON Ventilation mode started
Defect cooling Cooling defect
Defect ventilation Ventilation defect
Select Mode Waiting choose Mode
Cooling stopping The cooling mode is stopping
Preheating Initialisation
Mode maintenance Mode maintenance
Order of phase Defect This state appears when the unit electrical cables are misrouted.
Mode Stop This state appears when the unit is stopped.
Defrosting Mode This state appears when the unit is defrosting.
Remaining time information is available when in this state.
To facilitate the detection of faults on the unit or on a drive, each element turns red when a failure
occurs.
– 48 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
If you push on the maintenance screen, you have several options available.
Figure 2.20: Maintenance Screen options
1. Go to Main menu
2. Go to Contacts
3. Go to Analog Input sensors
4. Go to Speed controller bus manager
5. Go to Digital/Output Input sensors
6. Go to GPU information
7. Go to Engine information
2.3.3 Contacts
Figure 2.21: Contacts
1. Back to the previous menu
2. Go to the main screen
– 49 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.3.4 Engine information
Figure 2.22: Engine information
– 50 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.3.5 GPU information
Figure 2.23: GPU main screen 1 Figure 2.24: GPU main screen 2
Figure 2.25: GPU failures
– 51 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.3.6 Main Menu
Figure 2.26: Main Menu
1. Back to the previous menu
2. Go to the menu Information
3. Go to the menu Alarms
4. Go to the menu Settings
5. Go to the menu Administration
6. Go to the menu Help
7. Go to the main screen
– 52 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.3.6.1 Information Menu
Figure 2.27: Information Menu
1. Back to the main menu
2. Go to the menu PLC Inputs/Ouputs
3. Go to the menu Sensors
4. Go to the menu Graph
5. Go to the menu Bus
6. Go to the menu Energy
7. Go to the main screen
– 53 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
• Information of States Inputs/Outputs
Figure 2.28: Inputs States
1. Go to the digital output.
Figure 2.29: Outputs States
– 54 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
• Information of the sensors
Figure 2.30: Sensors information
List of available sensors:
Sensors Unit
General intensity A
External temperature ◦C
Outlet first cooling coil temperature ◦C
Outlet Blower temperature ◦C
Defrost temperature A ◦C
Defrost temperature B ◦C
Delivered temperature ◦C
• Information graph
Figure 2.31: Information Graph
– 55 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
• Information bus
Figure 2.32: Information bus
1. Go the menu bus speed controller of blower
2. Go the menu bus speed controller of condenser A
3. Go the menu bus speed controller of condenser B
4. Go to the menu bus electronic controllers (expansion valves)
– 56 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
1. Bus speed controller of the blower
Figure 2.33: Bus Blower
1. Go to the alarm menu of the speed controller
2. Go to the archival storage alarms menu of the speed controller
Figure 2.34: Alarms speed controller Figure 2.35: Alarms archive speed controller
– 57 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2. Bus speed controller of the condenser fans - circuit A
Figure 2.36: Bus condenser fans A
1. Go to the alarm menu of the speed controller
2. Go to the archival storage alarms menu of the speed controller
3. Bus speed controller of the condenser fans - circuit B
Figure 2.37: Bus condenser fans B
1. Go to the alarm menu of the speed controller
2. Go to the archival storage alarms menu of the speed controller
– 58 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
4. Bus electronic controllers (expansion valves)
Figure 2.38: Bus electronic valve
1. Go to the menu controller 1A (Positive circuit)
2. Go to the menu controller 1B (Positive circuit)
3. Go to the menu controller 2A (Negative circuit)
4. Go to the menu controller 2B (Negative circuit)
5. Go to the menu controller Hot gas 1 (Positive circuit A)
6. Go to the menu controller Hot gas 2 (Negative circuit B)
Figure 2.39: Expansion valve Regulator Figure 2.40: Expansion valve Regulator
– 59 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
Figure 2.41: Expansion valve Regulator Figure 2.42: Expansion valve Regulator
– 60 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
• Information Energy
Figure 2.43: Information Energy
– 61 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.3.6.2 Alarms Menu
Figure 2.44: Alarms Menu
1. Back to the main menu
2. Go to the menu Current Alarms
3. Go to the menu Archival storage alarms
4. Go to the menu 10 lasts defect recorded
5. Go to the menu Counters Alarms
6. Go to the main screen
• Current Alarms
Figure 2.45: Current Alarms
– 62 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
• Archival Storage Alarms
Figure 2.46: Archival Storage Alarms
• Alarms: 10 lasts defect recorded
Not available for this unit. Management of the defect is possible via an alarm LOG in the
controller (USB or FTP available).
• Alarms: Counters
Figure 2.47: Alarms: Counters
– 63 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
2.3.6.3 Settings Menu
Figure 2.48: Settings Menu
1. Back to the main menu
2. Go to the menu Languages
3. Go to the menu Time configuration
4. Go to the menu Hour-meter
5. Go to the main screen
• Settings: Languages
By this menu, you can change the language of the display
Figure 2.49: Settings: Languages
– 64 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
• Settings: Time configuration
By this menu, you can change the time of the PLC and the display
Figure 2.50: Settings: Time configuration
• Settings: Hourmeter
Figure 2.51: Settings: Hourmeter
– 65 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
List of available hourmeters:
Hourmeter Description
H001 Total Operating hours in heating mode
H002 Operating hours of the last operation in heating mode
H003 Operating hours of the negative cooling compressor
H004 Total operating hours in cooling mode
H005 Operating hours of the last operation in cooling mode
H006 Total operating hours in ventilation mode
H007 Operating hours of the last operation in ventilation mode
2.3.6.4 Administration Menu
This menu will only be used by Lebrun technicians.
2.3.6.5 Help Menu
Figure 2.52: Help Menu
1. Back to the main menu
2. Go to the menu Operating
3. Go to the menu Details of alarms
4. Go to the main screen
– 66 –
Operating Manual
COMBO 20
V. January 2021
Operating instruction
• Help Operating
The part ”OPERATING” explain the different stepto connect the unit at an aircraft.
Figure 2.53: Help Operating
• Details of alarms
The Troubleshooting give the description of the different defects and a first solution to solve the
failure:
Figure 2.54: Alarms Details
– 67 –
Operating Manual
COMBO 20
V. January 2021
68
CHAPTER 3
Maintenance
3.1 Servicing
3.1.1 Introduction
This section contains instructions for Servicing, Inspecting and Preventive Maintenance on the
COMBO 20 unit.
To ensure that the unit is kept in correct operation condition, it must be inspected and maintained
on a regular basis. Proper cleaning on the air filter at recommended intervals will help in preventing
damage or failure of the unit, and provide optimum performance.
Overhaul Intervals: Under normal operating conditions and with proper preventive maintenance
practices, the COMBO 20 will provide years of excellent service. Typically 20.000 to 30.000 hours
(depending upon local conditions).
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.1.2 Refrigeration system
Refrigeration section access
Access door for the refrigeration section is located at right side of the unit.
WARNING! WHEN WORKING WITH REFRIGERANTS, GOGGLES
SHOULD ALWAYS BE WORN. CONTACT WITH REFRIGERANT
MAY CAUSE INJURY.
Refrigerant Leak Testing
A leak free system assures trouble system operation and performance. Loss of refrigerant will
be accompanied by reduced system efficiency and capacity. It will also cause repeated activation of
system safety monitors, shutting down the unit. Leak testing should be accomplished at scheduled
intervals, and after any work has been accomplished on the unit.
Check the liquid line glass in order to control the flow of refrigerant and the humidity in the cooling
circuit.
If a leak has occurred, it may spread refrigerant throughout the interior of the unit, making locating
the leak difficult. The interior of the unit should be aired prior to testing. When a leak is detected
but you are unable to pinpoint the location, use compressed air to blow the area free of vapour, then
immediately retest before the leaking vapour spreads.
Utilize a draft free area when leak testing to prevent the loss of vapour from small leaks. Insure
that the testing area is free of compressor oil, which may contain dissolved refrigerant, giving false
test indications.
The testing method used here is the Electronic Leak Detector. This is the easiest method for leak
detection. Electronic leak detectors can be used in areas where an open flame is not permitted. A
detecting probe is passed over the area of a suspected leak. If a leak is present, the detector sounds a
high frequency alarm or signals by a flashing light, depending on the model used.
Refrigerant leak repair
(a) Locate leak as described above.
(b) Using a refrigeration recovery system compatible with R134a, pump refrigerant from the system
and dispose.
(c) Correct leak as described below.
(d) Replace drier if necessary, see sight glass for moisture indication.
(e) If no leaks are present, pump out system and then evacuate system to at least 270 [Pa], hold
for 30 minutes. Break vacuum with nitrogen and raise system pressure to 0 to 0.34 bars. Re-
evacuate system to 270 [Pa]. Repeat this for a total of three times, then charge the system with
R134a.
– 69 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
WARNING! ENSURE ADEQUATE VENTILATION DURING
REPAIRS. PHOGENE GAS, A DEADLY POISON, IS
GENERATED WHEN REFRIGERANT IS EXPOSED TO FLAME.
(f) Leak repair procedure:
• Thoroughly clean paint, dirt and oil film from adjacent piping. Use a wire brush, sandcloth
or sandpaper.
• Wrap nearby parts with water-soaked cloths to protect them from heat damage during
repairs.
• If a solder joint requires repair, disassemble the joint and clean away any refrigerant oil
which may be present. Oil traces will not allow a leak-proof solder repair to be made.
After cleaning, reassemble the parts and solder.
• Solder repairs the leak. For copper to copper piping, use Lastek 34 (30% silver) type
L-AG30CD.
• Reassemble and tighten any connections previously loosened.
• If the plumbing system has been opened for repair, evacuate the system previously open to
a vacuum of 405 [Pa]. Add dry nitrogen to raise pressure to 10,3 [bar].
• Open all previously closed valves.
• Perform a pressure check for leaks with foam products.
• If all leaks are repaired, evacuate system to 270 [Pa] at least three times.
Refrigerant charging
Charge procedure method:
Prior to starting, weigh the bottle of refrigerant to be used for charging, and record its weight.
(a) Check all valves are open.
(b) Start the unit (compressor running).
(c) Charge the remainder of the refrigerant through the suction port until the liquid sight glass
shows clear.
WARNING! USE ONLY R134A REFRIGERANT. IF ANY OTHER
TYPE OF REFRIGERANT IS USED, THE UNIT WILL NOT
FUNCTION PROPERLY.
– 70 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Moisture in a refrigerant system. Evacuation of moisture
The strainer/drier in the system is designed to remove particles and small amounts of moisture
which may enter the system during minor servicing or fault conditions. Major moisture intrusion
through fault or contamination may require complete system evacuation for moisture removal.
Moisture in a refrigerant system is directly or indirectly the real cause of more problems and
complaints than all other causes combined. Moisture in a system can be classified as visible and
invisible. Rarely is liquid water found in a system, normally all intrusive moisture will be in the form
of vapour. A single drop of moisture in a system can cause ”freeze-ups”. Moisture can be picked up
by the refrigerant and be transported through the lines as a fine mist, causing ice crystals to form
at the point of expansion (expansion valve). These ice crystals will retard or stop the flow of the
refrigerant, causing a reduction or complete loss of cooling. As the expansion valve warms due to the
lack of refrigerant, the ice melts and passes through the expansion valve. The moisture will then cycle
through the system until it again returns to the expansion valve, and the cycle is repeated. The result
is intermittent cooling. Moisture can also cause corrosion, which can present serious problems, often
not apparent until severe damage has occurred. Moisture, combined with refrigerants, can create acids
which in turn greatly increase the corrosion of metals and copper plating.
Refrigerant oil has an attraction for moisture and will absorb it rapidly if left open to the atmo-
sphere. Water formed acids mix with refrigerant oil, the two forming a closely bonded mixture of
fine globules. The effect is called ”sludging” and greatly reduces the lubricating ability of the oil.
The corrosion caused by the presence of this moisture in the form of ”sludge” can plug fine strainers,
expansion valves and capillary tubes. Because it usually contains acids, sludge will corrode whatever
it clings to, accelerating system damage. It is imperative that only fresh oil from unopened containers
be used. Previously opened oil provides too great a danger of system moisture intrusion.
The most effective means in removing moisture from a system is to utilize a high (deep) vacuum
pump. A high vacuum pump is capable of removing all moisture from a hermetic system by reducing
internal system pressures to the boiling point of water at normal temperatures. The vacuum pump
does not ”suck out” the liquid moisture, but rather causes it to boil into a vapour state at which time
it can be harmlessly removed from the system and exhausted through the vacuum pump.
The ideal vacuum pump should evacuate the system to at least 500 microns, and must also be
capable of holdingthat vacuum throughout the dehydration process. It must pull that vacuum on
the entire system and not simply at the intake of the pump. This pump is able to remove moisture
at an ambient temperature of 26oC or over. The adequate pump to be used for this cooling system is
mentioned in the Support Test Equipment section.
– 71 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.1.3 Air handling system
Air Filter - Cleaning Instruction
Regularly, you have to clean the filters according to the instructions below.
(a) Access to air filters
Open the access doors on the left of the unit to access to air filters.
Figure 3.1: Prefilters
– 72 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
(b) Taking out the prefilters
• Unlock and open the hooks at the four corners of each filter
Figure 3.2: Unlocking hook Figure 3.3: Opening hook
• Pull the prefilter out of the frame, you get access to the filter behind
Figure 3.4: Pulling out prefilter Figure 3.5: Filter
– 73 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
• Pull the filter out of the frame
Figure 3.6: Pulling out filter
• Repeat those operations for the other prefilters and filters
(c) Cleaning the filters
• When the filters are dismounted, blow some compressed air through the filter in the opposite
direction of the air flow in operation
• Clean-up the remaining dusts on the air inlet face with a vacuum-cleaner.
– 74 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.2 Maintenance Schedule
3.2.1 Consumable Materials
The table below indicates the list of consumable materials requested to perform good servicing of the
COMBO 20 .
Air filters
2 x Pre-filter (G4 class - PN: 1238759)
2 x Filter (F7 class - PN: 1238758)
Table 3.1: Consumable material
3.2.2 Support Test Equipment Required
The equipments listed below are required to perform an adequate maintenance and inspection of the
COMBO 20 :
Connection - PLC Schneider
(Automaton)
Software SoMachine (Vers.3.1)
Communication cable USB Type A to USB Mini
Connection - Schneider Display
Software Vijeo Designer
Communication cable ETHERNET TCP/IP
Tools for cooling aggregate
Vacuum pump ITE MK 162DS
Manifold 4 V - ITE 2804 BC + connection
Refrigerant recovery unit
Refrigerant recovery tank
Ratchet spanner TOTALINE 127 C
Vacuum meter REFCO DV-150
Multimeter (current, voltage, frequency)
Thermometer
Table 3.2: Support test equipments
– 75 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.2.3 Inspection
The following pages are provided as guidance to establish a proper service schedule. This periodic
preventive maintenance inspection schedule should be established and maintained. The following
schedule meets the minimum requirements necessary to ensure safe reliable service under normal
operating conditions. It may be modified as required to meet varying operating and environmental
conditions.
WARNING! EXTREME CAUTION MUST BE USED WHILE MAKING SERVICE
INSPECTIONS WITHIN THE UNIT. NEVER SERVICE THE UNIT ALONE.
SWITCH OFF THE GROUND SWITCH BEFORE PERFORMING ANY
MAINTENANCE OPERATION. FAILURE TO FOLLOW THIS PRECAUTION
COULD RESULT IN SERIOUS INJURY OR DEATH.
DISCLAIMER:
THE MENTIONED TIME FRAMES ARE FOR GUIDANCE ONLY AND MAY
VARY FROM APPLICATION TO APPLICATION. DATA OF OEM (ORIGINAL
EQUIPMENT MANUFACTURER) SHALL PREVAIL IN CASE OF
DISCREPANCY.
– 76 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Diesel Generator
Figure 3.7: Diesel Engine
1. Lube oil filler
2. Coolant expansion tank
3. Air filter
4. Exchangeable Lube oil filter
5. Exchangeable Fuel filter
6. Oil dipstick
7. Battery switch
8. Alternator
9. Engine regulator
10. Engine
11. Fan, Radiator and Charge Air Cooler
– 77 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.2.3.1 Daily
• Diesel Engine
– Check and fill if necessary the lube oil (see 1 on figure 3.7)
– Check the coolant liquid level (see 2 on figure 3.7)
– Check for leaks
– Check the engine dry/suction air filter (see 3 on figure 3.7)
• Unit
– Check the general wear.
– Check drawbar handling, its braking and locking pedal.
– Check the no copper is visible on the cables.
– Check that the plug terminals are not damage or corroded
– Check that the indicator lights of the operating unit come on when the ignition is switched
on.
– Clean the reflectors
– About cooling liquid, consult the engine documentation.
3.2.3.2 After every 200 operating hours
Cleaning of the unit outdoor prefilters with compressed air and with a vacuum cleaner (see figure
3.1 in chapter 3.1.3).
• Check the temperatures and pressures against what reported on the machine history logbook.
• Check oil level of the compressor
• control bolts tightening
• Visual inspection if the status of cable insulation.
• The oil level in the compressors (while in operation) (see figure 3.8). If the level is low, checking
will be made again 3 to 4 hours later.
– 78 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.2.3.3 After every 500 operating hours
The electrical safeguards should be checked every 500 hours.
• Cleaning or eventual replacement of unit outdoor filters (see figure 3.1 and chapter 3.1.3).
• Change the lube oil of the engine (see 1 on figure 3.7)
• Replace the oil filter cartridge of the engine (see 4 on figure 3.7)
• Inspection:
Figure 3.8: Compressor elements
– 79 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Figure 3.9: Instrumentation
– The general aspect of the compressors (see figure 3.8) .
– The presence of refrigerant in the sightglass (after +/- 30 minutes of continuous operation).
– The lack of foam in the oil crankcase (see 1 on figure 3.8).
– The good state of the steelcasing, paint, hinges, door handles, wheels, etc.
– The presence of traces of unusual humidity under the unit.
– The cleanness of the condenser with eventual cleaning.
– If the unit is equipped with a premium cable, inspect the cable head and replace it if
necessary (TLD PN 1240300).
• Measure:
– The working temperatures (ambiance, outlet of supplied air, inside the unit).
– The air pressure.
– The voltage on the terminal block of each battery with a multimeter. If voltages are lower
than 10,6 V, replace them.
– 80 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
• Check:
– The working state of control and visual devices
– Check the air inlets and outputs on the rear bodywork, clean if necessary.
– Check the mechanical strength of the reflectors and beacons.
– Check the tightening of the wheels screws (260 N.m for front and rear wheels, see figure
3.10)
Figure 3.10: Wheels screw torque
– Control panel:
∗ LEDs,
∗ Shut-off contactor,
∗ Refrigerating and ventilation test.
– The operation of the crankcase heater.
– The proper functioning of the drainage.
– Clean and grease the battery lugs (Open the battery cut-off switch for this operation).
– Check the V-belt of the motor (tighten or replace if necessary)
– Check the starter connections, battery charging alternator connections, the engine’s various
sensors connections.
– Check hose attachment.
– Check that the fuse holder terminal blocks, contactors and the rectifier are in good condi-
tion, tighten the connections and fixations if necessary.
– Check that the bundles are correctly connected to the control panel
– Check the board connectors are properly connected.
– Check the 400Hz unit contactors when the generator is at rated speed.
– 81 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
CAUTION! THE DISCHARGE OF CONDENSATES IS ONLY ALLOWED IF THE
INNER PRESSURE IS ABOVE +/- 10 [mBAR].
3.2.3.4 After every 1000 operating hours or twice a year
• Diesel engine
– Replacement of the fuel filter and pre-filter cartridge (see 5 & 6 on figure 3.7)
– Cleaning of the radiator (drain lube oil/condensate)
– Check the flexible fuel leakage lines
– Check the battery and cable connections
– Check the preheating plug
– Check the monitoring, warning system
– Check the fixings,hose connections(renew if damaged)
– Check the cooling system bearings (rubber and retaining elements)
• Towbar
– Check the maneuverability. If necessary, apply 10g of grease to the towbar axle, 10 to 20g
on the cables and the parts that rub cables and on the Capstan joint.
– Check the braking system.
• Alternator
– Check the alternator grilles are not blocked, clean with dry air.
– Check the installation of the terminal board and the electrical connections.
• Cooling system and accessories
– Dry clean the engine cooling system and its accessories.
• Current safeguards:
– Use a three-phase load bank and check the 400 Hz distribution cable’s permissible overload.
– Use a resistive load bank and check different overload points (consult the monitoring curves).
3.2.3.5 After every 5000 operating hours
• Pump out and clean the fuel tank
3.2.3.6 After every 10000 operating hours
• Replacement of the oil and oil filter of the compressor
– 82 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.2.3.7 Once a year
• Performance tests of the unit in ”cooling” working modes.
• Tests and adjustments of the different safety devices on the unit.
– Refrigeration part:
∗ HP pressure switch (see PSH3A & PSH3B on figure 3.9),
– Aerodynamic part:
∗ Safety pressure switch (see PSH1.1 on figure 3.9),
• Checking of the absorbed powers.
• Checking of the condenser’s fan.
• Checking of the capacity regulation valve working order.
• Checking of the cooling system of the engine
• Checking of the exhaust system of the engine
• Cleaning of the air filter of the engine
• Replacement of the battery
• Cleaning of the fuel filter and replacement if necessary
• Control the charge of refrigerant and adapt the complementary charge.
• Greasing of the steering axles at the front of the unit.
• Greasing of the brake system and checking of its good working order.
• General inspection of:
– The air handling unit (presence of humidity, air leakage, bad fixings, ...),
– The fixings of the refrigeration piping,
– The piping insulation,
– The correct fixings of temperature sensors,
– The fixings of side panels,
– The good state of the panels acoustic insulation,
– The detection of any trace of rust,
– The eventual presence of refrigerant leakage,
– The cleaning of the electrical brushes,
– The eventual tightening of terminals.
CAUTION! PRESENCE OF ANY MAGNETIC DEVICE NEAR THE PLC MUST
BE AVOIDED.
– 83 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.2.4 Maintenance Table of the unit
We recommend you to maintain the unit according to
these guidelines and frequencies. The number of oper-
ating hours refer to average market conditions. Other
frequencies and hours may be applicable depending on
environmental conditions and other market data. In
this case, please contact Lebrun .
E
ve
ry
20
0
h
o
u
rs
o
r
w
ee
k
ly
E
ve
ry
5
0
0
h
ou
rs
o
r
on
ce
a
m
o
n
th
E
ve
ry
40
0
0
h
o
u
rs
o
r
tw
ic
e
a
ye
ar
E
ve
ry
80
00
h
ou
rs
or
on
ce
a
ye
ar
THE COMPRESSOR
Check the oil level •
Check the general aspect •
Check the refrigerant charge •
Check the operating data •
Check the protection devices and all compressor moni-
toring parts
•
Check electrical cable connections on tight fitting •
Check the tightening torques •
Perform a tightness test •
Update date protocol •
THE ELECTRICAL MOTORS
Initial Inspection (Only once) •
Regreasing See lubricant plate
Permanent lubrication (with coupling output) •
Cleaning Depending on degree of local fooling
Main inspection After the first 16000 h or after 2 years
GENERAL INSPECTION
Clean the outdoor prefilters •
Clean the outdoor filters (replace if necessary) •
The lack of foam in the oil crankcase •
Check the tightening of the wheels screws (260 N.m for
front and rear wheels)
After 3 months then annually
If unit is equipped with a premium cable, replace the
400Hz cable head if necessary (PN 1240300)
•
continued on next page
– 84 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
continued from previous page
E
ve
ry
2
0
0
h
o
u
rs
or
w
ee
k
ly
E
ve
ry
50
0
h
o
u
rs
or
o
n
ce
a
m
o
n
th
E
ve
ry
40
0
0
h
ou
rs
or
tw
ic
e
a
ye
ar
E
ve
ry
8
00
0
h
o
u
rs
o
r
on
ce
a
ye
ar
The air handling unit:
- presence or trace of humidity •
- air leakage, bad fixings, etc. •
The cleanness of the condenser. Clean if necessary. •
The good state (paint, trace of rust, fixing,...) of the side
and acoustic insulation panels, the steelcasing, the door
handels, the hinges, the wheels, etc.
• •
The tightening of all electrical terminals After 3 months then annually
The replacement of the safeguard battery in the PLC •
The cleaning of the 2 electrical panels •
Greasing of the steering axles at the front of the unit and
of the brake system + checking of its good working order
•
Fixings and insulation of the piping •
Presence of refrigerant leakage •
The correct fixing of temperature sensors •
TESTS
The working state of control and visual devices •
Checking of the condenser’s 2 fans •
Checking of the control panel :
- Shut-off contactor •
- Refrigerating and ventilation test •
- Leds •
Measuring of the working temperatures (ambiance, outlet
of supplied air, inside the unit)
•
Measuring of the number of operating hours •
Measuring of the air pressure •
Checking of the correct working of the water discharge •
continued on next page
– 85 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
continued from previous page
E
ve
ry
2
0
0
h
o
u
rs
or
w
ee
k
ly
E
ve
ry
50
0
h
o
u
rs
or
o
n
ce
a
m
o
n
th
E
ve
ry
40
0
0
h
ou
rs
or
tw
ic
e
a
ye
ar
E
ve
ry
8
00
0
h
o
u
rs
o
r
on
ce
a
ye
ar
Checking of the good working of the crankcase resistance •
Tests and adjustments of the different safety devices on
the unit
- Refrigeration part: HP pressure switch •
- Aeraulic part: Safety pressure switch •
Performance tests of the unit in ”cooling” working modes •
Checking of the absorbed powers •
Table 3.3: Cooling unit maintenance planning
– 86 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.2.5 Maintenance Table of the internal generator
For maintenance and inspection of the engine, it is necessary to refer to instruction manual of the
engine prevailing on following tables. The general maintenance of the unit consist to execute periodic
operations on substantive bodies. Operations to execute are defined according to the hours of operation
and are summarized in tables below.
ALL INTERVENTION on the engine beam, open cover, spinning
motor, is prohibited to any person not qualified.
INTERNAL WASHING OF THE GROUP WITH A PRESSURE
WASHER IS NOT ALLOWED.
Please find here after the maintenance operations
to be carried out on the engine. It is necessary to
refer to the engine manufacturer maintenance man-
ual,supplied with the ACU. The following panels,
issued by Lebrun , can not replace the engine man-
uals.
E
ve
ry
10
h
ou
rs
or
d
ai
ly
E
ve
ry
50
0
h
ou
rs
E
ve
ry
10
00
h
ou
rs
or
ye
ar
ly
E
ve
ry
20
00
h
ou
rs
or
ev
er
y
tw
o
y
ea
rs
E
ve
ry
45
00
h
ou
rs
D
ep
en
d
s
on
n
ee
d
s
THE ENGINE
Check engine oil level •
Check coolant liquid level •
Check fuel filter •
Replace engine oil and oil filter •
Replace fuel filter •
Check crankcase vent filter •
Check Radiator support & engine shock absorbers
(to be replaced if deteriorated) •
Check electrical wiring •
Replace air filter •
Check the belt tension (1) •
Check the cooling circuit •
Check the engine intake system •
Check the engine speed •
continued on next page
– 87 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
continued from previous page
E
ve
ry
10
h
o
u
rs
or
d
a
il
y
E
ve
ry
50
0
h
ou
rs
E
ve
ry
1
0
00
h
ou
rs
or
ye
ar
ly
E
ve
ry
2
0
00
h
ou
rs
or
ev
er
y
tw
o
y
ea
r
E
ve
ry
45
00
h
ou
rs
D
ep
en
d
s
on
n
ee
d
s
Replace the coolant liquid •
Clean or replace air filter cartridge •
Replace fan or alternator belt•
Check the exhaust pipe •
Check the preheating resistance •
Visual control of engine leak • •
Control the water hose fixation •
Clean the radiator • •
Table 3.4: Internal generator maintenance planning
Note:
• (1): During the running in period (first 50 hours), check daily the tension of the belts.
• (2): Air filter replacement depends on surrounding conditions (dust, ...)
• After first 100 hours, replace engine oil and oil filter.
– 88 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.3 Troubleshooting
3.3.1 General
This section contains troubleshooting information to assist, to locate and to correct operating troubles
which may develop in the unit. Each malfunction for an individual component, unit or system is
followed by a list of tests or inspections which will help the technician to determine probable causes
and corrective action to take.
The test/inspections and corrective actions should be performed in the order listed. Troubleshoot-
ing is a logical and systematic process of determining and correcting the cause of a malfunction. The
process begins with verification of the malfunction. This may often involve an operational check-out
of the unit. After the trouble has been verified, identify all components in the circuit whose failure
could cause the symptoms observed during the operational check-out. The technician should start by
checking those items which are highest in probability of causing the problem. Inspect and test each
component, until the exact cause of the problem is determined and corrected.
WARNING! USE EXTREME CARE TO AVOID CONTACT WITH HIGH
VOLTAGE LEADS AT ALL TIMES. REMOVE ALL JEWELRY, SUCH AS
RINGS, WATCHES, CHAINS, ETC., THAT COULD COME INTO CONTACT
WITH EXPOSED LEADS AND WIRES. FAILURE TO COMPLY MAY RESULT
IN SEVIER ELECTRICAL SHOCK OR DEATH, AND/OR CAUSE DAMAGE
TO EQUIPMENT.
WARNING! EAR PROTECTION DEVICES MUST BE WORN WHEN IN THE
IMMEDIATE VICINITY OF THIS UNIT DURING OPERATION. REPEATED
EXPOSURE TO HAZARDOUS NOISE CAN CAUSE PERMANENT HEARING
LOSS.
WARNING! REFRIGERANTS, OILS AND OTHER PRODUCTS CAN
READILY BE ABSORBED THROUGH THE SKIN AND INTO THE BLOOD
STREAM. WASH IMMEDIATELY AFTER COMING INTO CONTACT WITH
THESE PRODUCTS.
– 89 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.3.2 Fault Indication
3.3.2.1 Fault display
• At the time of the occurrence of a GPU or engine fault, the following symbol flashes:
Figure 3.11: Engine Measurements
– 90 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
• Press this symbol to access the fault history:
Figure 3.12: GPU fault screen display
The color advise on the fault status:
RED = Fault active (ongoing)
ORANGE = Warning active (ongoing)
GREEN = fault/warning non-active
– 91 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
• In the case of engine faults, pressing on the error message allows access to the next screen in
order to get the SPN/FMI code:
Figure 3.13: SPN / FMI code
– 92 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.3.3 Troubleshooting chart
3.3.3.1 Default on the PLC display
This section presents the required solutions when the ”FAILURE” lamp lights on. On every board of
the table 3.5, information is presented through three categories:
• Cause
• Type
• Solution
When it is appropriate, the solution is presented through a tree. When the problem is solved, reset
the PLC (Reset/Maintenance button).
– 93 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Table 3.5: Troubleshooting chart for unit failures
D001
CAUSE: Failure comes from the speed controller of the blower SC1
TYPE: Stop of the unit in all mode
SOLUTION: Look at the alarm on the speed controller by the PLC display (See
Chapter 2)
D002
CAUSE: Failure comes from the PTC probe
TYPE: Stop of the unit in all mode
SOLUTION: - Wait until the temperature inside the unit goes down.
- Restart the unit.
- If the default occurs again, contact Lebrun
– 94 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D003
CAUSE: The air pressure switch (PSH1.1) switched off
TYPE: Stop of the unit in all mode
SOLUTION:
Is the air pressure
switch activated on
the speed controller
screen on the PLC ?
The default is fixed. Reset the
PLC with the maintenance
button and reboot the unit
in the selected mode. Check
if the default occurs again
and in which condition.
YE
S
Is cable SC1-PSH1.1 well
connected according to
the Lebrun drawing and
is it in a good state?
Check the wiring at the
terminal number 12 and
18 of the speed controller
SC1. If the problem goes
on, contact Lebrun .
Y
E
S
Connect the ca-
ble correctly and
replace it, if needed.
N
O
NO
– 95 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D004
CAUSE: The circuit breaker Q1.0 switched off (blower protection device).
TYPE: Stop of the unit in all mode
SOLUTION:
Did the circuit breaker
Q1.0 switched off?
Reset the circuit breaker. Re-
set the PLC. Restart the group
measuring the current value con-
sumed by the frequency driver
(after the circuit breaker). If the
problem goes on, contact Lebrun .
YE
S
Is the auxiliary contact on the circuit
breaker Q1.0 working properly? (mea-
sure with a ohm-meter, off power)
Check the wiring
of the PLC card
TM241CEC24T
(K80.0), terminal I1.
If the problem goes
on, contact Lebrun
Y
E
S
Replace the
auxiliary
contact of the
circuit breaker.
N
O
NO
– 96 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D005
CAUSE: The PLC did not receive the information that the speed controller
SC1 started even though it asked for it.
TYPE: Stop of the unit in all mode
SOLUTION:
Is speed controller under power?
Start the unit in ventilation mode.
Check the proper working of MODBUS
TCP/IP communication (contact
Lebrun ). Check on the display of
the speed controller if ”Auto ON”
is selected. Check cable U1-SC1-3.
YE
S
Check the circuit breaker Q1.0. If the
problem goes on, contact Lebrun .
NO
D009
CAUSE: The PLC detected a default on the Carel EVD50 regulator of negative
evaporator (K61).
TYPE: Stop of the unit in cooling mode
SOLUTION:
– 97 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Is light n◦12 or
n◦13 of the third
card TM3DQ16TG
(K80.2) of the PLC
on (see page 86 of
electrical schematic) ?
The defect disappeared.
Reset the PLC with the
maintenance button
and restart the unit
in the selection mode.
Check if the defect
comes back and under
which circumstances.
Y
E
S
Check if the MODBUS
communication
TCP/IP is OK.
Defect of the
CAREL regulator.
Check the pres-
sure sensor PT2B
(wiring, value).
Check for super-
heating (SH T◦ on
figure 2.41) or 2.42).
Check the expansion
valves EV6B.1 /
EV6B.2 (noise during
opening/closing)
Y
E
S
Check the wiring
between the PLC and
the EVD050 regulator
at the terminals
GND and +/- of
the regulator (see
page 63 of electrical
drawing). Is there
a problem there?
Correct
the wiring.
Y
E
S Check the wiring
of the PLC card
TM3DQ16TG,
terminal 12 or
13 (see page
86 of electrical
drawing). If the
problem goes on,
contact Lebrun .
N
O
N
O
N
O
– 98 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D010
CAUSE: The circuit breaker Q2B.1 or Q2B.2 switched off (negative compressor
protection device).
TYPE: Stop of the unit in cooling mode
SOLUTION:
Did the circuit
breaker Q2B.1 or
Q2B.2 switched off?
Reset the circuit breaker.
Reset the PLC.
Restart the group measur-
ing the current value con-
sumed by the frequency driver
(after the circuit breaker).
If the problem goes
on, contact Lebrun .
Y
ES
Is the auxiliary contact on the
circuit breaker Q2B.1 or Q2B.2
working properly (measure
with a ohm-meter, off power) ?
Check the wiring
of the PLC card:
TM241CEC24T,
terminal I1.9 or I1.10.
If the problem goes
on, contact Lebrun .
Y
E
S
Replace the aux-
iliary contact of
the circuit breaker.
N
O
N
O
D011
CAUSE: The PLC detected a shortage of oil on negative compressor.
TYPE: Stop of the unit in cooling mode
SOLUTION: -Reset the unit.
- Check the status of LED on oil control system (LC2B.1)
- Control the oil level through the sightglass on the compressor.
- Fill up if necessary.
– 99 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D012
CAUSE: The PLC did not receive the information that the negative compres-
sor contactors started even though it commanded it.
TYPE: Stop of the unit in cooling mode
SOLUTION:
Check the K2B.1 and K2B.2 contactors.
Check the auxiliary contacts of the con-
tactors. Is there a problem with these?
Replace the defective part
Y
E
S
Reset the PLC and restart in cooling
mode. Do the contactors turn on? Both?
Is light I1.8 of the PLC
card on during the 5 sec-
onds before the default ?
Problem
with the
PLC.
Contact
Lebrun
Y
E
S
Problem of infor-
mation return of
the PLC. Check the
wiring between the
auxiliary contact
and the PLC. If
the problem goes
on, contact Lebrun
N
O
Y
E
S
Problem in the
wiring of the
command. Check
the wiring between
the contactor
and the PLC
output card. If the
problem goes on,
contact Lebrun
N
O
N
O
– 100 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D014
CAUSE: The PLC reduced the capacity of the compressor to limit the current
consumption.
TYPE: Information
SOLUTION: This is no default. The PLC limits the use of the unit under the
normal working conditions.
– 101 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D015
CAUSE: Failure comes from the speed controller of the condenser SC3B (neg-
ative circuit)
TYPE: Stop of the unit in cooling mode
SOLUTION: Look at the alarm on the speed controller by the PLC display (See
Chapter 2)
D016
CAUSE: The Q3B.0 circuit breaker (condenser fan circuit breaker, negative
circuit) switched off.
TYPE: Stop of the unit in cooling mode
SOLUTION:
Did the Q3B.0 circuit
breaker switch off?
Restart the Q3B.0 circuit breaker.
Reset the PLC.
Restart the group measuring the
value of the current consumed
by each condenser fan (after
the circuit breaker). If the
problem goes, contact Lebrun .
YE
S
Does the auxiliary contact
Q3B.0 work well? (measure
with a ohm-meter off power).
Check the communication
MODBUS TCP/IP and
the cable U1-SC3B-3
Check the wiring
at the PLC card
TM241CEC24T
(K80.0) terminal 2.
If the problem goes
on, contact Lebrun .
Y
E
S
Replace the Q3B.0
auxiliary contact.
N
O
NO
– 102 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D018
CAUSE: Phases order failure
TYPE: Stop of the unit in all mode
SOLUTION: Check the phase order at the connection, check the wiring of the
phases order controller (B2). If problem goes on contact Lebrun
D019
CAUSE: The number of successive start of the compressor negative is larger
than 10 in an hour.
TYPE: Stop of the unit in cooling mode
SOLUTION: - Reset the unit.
- Restart the unit.
- Check the low pressure with manometer PI2B or PT2B.
- Check that there is no leak in the cooling circuit.
- If the problem goes on, contact Lebrun .
– 103 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D020
CAUSE: The PLC detected a default with the internal protection of the neg-
ative compressor (PTC relay).
TYPE: Stop of the unit in cooling mode.
SOLUTION:
Is the light 11 of the first card
TM241CEC24T of the PLC on ?
The default is no more
there. Reset and check
the compressor oper-
ation. If the problem
goes on, contact Lebrun
Y
E
S
Cut the current with the Q10.2 for
10 seconds. Reset the Q10.2 and
the PLC. Is the default still there?
Check the wiring be-
tween the first card
TM241CEC24T of the
PLC, terminal 11 and
terminal 96 of PTC
relay (K2B.9). Check
connection between ter-
minal XG31B-1 and T2
on K2B.9. Is that OK?
If the problem
goes on,
contact
Lebrun
Y
E
S
Correct the
wiring. If
problem goes on,
contact Lebrun
N
O
Y
E
S
The default is
no more there.
Reset and check
the compressor
operation. If the
problem goes on,
contact Lebrun
N
O
N
O
– 104 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D021
CAUSE: The PLC detected a default with the high pressure pressure switch
of negative compressor (PSH3B.1).
TYPE: Stop of the unit in cooling mode.
SOLUTION: - Check if the light I1.10 on the PLC card TM241CEC24T is on.
- Reset the HP pressure switch (black button).
- Reset the PLC.
- Restart the unit → Check the operating pressure values.
- Identify when the default occurs again.
- Contact Lebrun .
– 105 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D029
CAUSE: The PLC detected a default on the Carel EVD50 regulator of positive
evaporator (K60).
TYPE: Stop of the unit in cooling mode
SOLUTION:
Is light n◦4 or n◦5
of the first card
TM241CEC24T
(K80.0) of the PLC
on (see page 82 of
electrical schematic) ?
The defect disappeared.
Reset the PLC with the
maintenance button
and restart the unit
in the selection mode.
Check if the defect
comes back and under
which circumstances.
Y
E
S
Check if the MODBUS
communication
TCP/IP is OK.
Defect of the
CAREL regulator.
Check the pres-
sure sensor PT2A
(wiring, value).
Check for super-
heating (SH T◦ on
figure 2.39) or 2.40).
Check the expansion
valves EV6A.1 /
EV6A.2 (noise during
opening/closing)
Y
E
S
Check the wiring
between the PLC and
the EVD050 regulator
at the terminals
GND and +/- of
the regulator (see
page 61 of electrical
drawing). Is there
a problem there?
Correct
the wiring.
Y
E
S Check the wiring
of the PLC card
TM241CEC24T,
terminal 4 or
5 (see page 82
of electrical
drawing). If the
problem goes on,
contact Lebrun .
N
O
N
O
N
O
– 106 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D030
CAUSE: Failure comes from the speed controller of the compressor SC2B
TYPE: Stop of the unit in cooling mode
SOLUTION: Look at the alarm on the speed controller by the PLC display (See
Chapter 2).Then contact Lebrun .
D031
CAUSE: The PLC detected a shortage of oil on positive compressor.
TYPE: Stop of the unit in cooling mode
SOLUTION: - Reset the unit.
- Check the status of LED on oil control system (LC2A.1)
- Control the oil level through the sightglass on the compressor.
- Fill up if necessary.
– 107 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D032
CAUSE: The PLC did not receive the information that the positive compressor
contactors started even though it commanded it.
TYPE: Stop of the unit in cooling mode
SOLUTION:
Check the K2A.1 and K2A.2 contactors.
Check the auxiliary contacts of the con-
tactors. Is there a problem with these?
Replace the defective part
Y
E
S
Reset the PLC and restart in cooling
mode. Do the contactors turn on? Both?
Is light I1.3 of
the PLC card on
during the 5 seconds
before the default?
Problem
with the
PLC.
Contact
Lebrun
Y
E
S
Problem of infor-
mation return of
the PLC. Check the
wiring between the
auxiliary contact
and the PLC. If
the problem goes
on, contact Lebrun
N
O
Y
E
S
Problem in the wiring
of the command. Check
the wiring between
the contactor and the
PLC output card.
If the problem goes
on, contact Lebrun
N
O
N
O
D033
– 108 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
CAUSE: The PLC detected a default with the internal protection of the posi-
tive compressor (PTC relay).
TYPE: Stop of the unit in cooling mode.
SOLUTION:
Is the light 6 of the first card
TM241CEC24T of the PLC on ?
The default is no more
there. Reset and check
the compressor oper-
ation. If the problem
goes on, contact Lebrun
Y
E
S
Cut the current with the Q10.2 for
10 seconds. Reset the Q10.2 and
the PLC. Is the default still there?
Check the wiring be-
tween the first card
TM241CEC24T of the
PLC, terminal 6 and
terminal 96 of PTC
relay (K2B.9). Check
connection between ter-
minal XG31A-1 and T2
on K2A.9. Is that OK?
If the problem
goes on,
contact
Lebrun
Y
E
S
Correct the
wiring. If
problem goes on,
contact Lebrun
N
O
Y
E
S
The default is
no more there.
Reset and check
the compressor
operation. If the
problem goes on,
contact Lebrun
N
O
N
O
– 109 –
OperatingManual
COMBO 20
V. January 2021
Maintenance
D034
CAUSE: The PLC detected a default with the high pressure pressure switch
of positive compressor (PSH3A.1).
TYPE: Stop of the unit in cooling mode.
SOLUTION: - Check if the light I1.5 on the PLC card TM241CEC24T is on.
- Reset the HP pressure switch (black button).
- Reset the PLC.
- Restart the unit → Check the operating pressure values.
- Identify when the default occurs again.
- Contact Lebrun .
D035
CAUSE: The circuit breaker Q2A.1 or Q2A.2 switched off (positive compressor
protection device).
TYPE: Stop of the unit in cooling mode
SOLUTION:
Did the circuit
breaker Q2A.1 or
Q2A.2 switched off?
Reset the circuit breaker.
Reset the PLC.
Restart the group measur-
ing the current value con-
sumed by the frequency driver
(after the circuit breaker).
If the problem goes
on, contact Lebrun .
Y
ES
Is the auxiliary contact on the
circuit breaker Q2A.1 or Q2A.2
working properly? (measure
with a ohm-meter, off power)
Check the wiring
of the PLC card :
TM241CEC24T,
terminal I1.4 or I1.5.
If the problem goes
on, contact Lebrun .
Y
E
S
Replace the aux-
iliary contact of
the circuit breaker.
N
O
N
O
– 110 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D036
CAUSE: The PLC detected a shortage of oil on negative compressor.
TYPE: Stop of the unit in cooling mode
SOLUTION: - Reset the unit.
- Check the wiring of the contact on the PLC integrated card
TM241CEC24T, terminal I1.12.
- Check the status of LED on oil control system (LC2B.1)
- Control the oil level through the sightglass on the compressor.
- Fill up if necessary.
D037
CAUSE: The PLC detected a shortage of oil on positive compressor.
TYPE: Stop of the unit in cooling mode
SOLUTION: - Reset the unit.
- Check the wiring of the contact on the PLC integrated card :
TM241CEC24T, terminal I1.7.
- Check the status of LED on oil control system (LC2A.1)
- Control the oil level through the sightglass on the compressor.
- Fill up if necessary.
D038
CAUSE: Failure comes from the speed controller of the compressor SC2A
TYPE: Stop of the unit in cooling mode
SOLUTION: Look at the alarm on the speed controller by the PLC display (See
Chapter 2). Then contact Lebrun .
D039
CAUSE: Defect PTC probe of condenser fans of condenser negative.
TYPE:
SOLUTION: Open motor box and inspect cable and connection.
– 111 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D042
CAUSE: The PLC did not receive the information that the speed controller
SC3B started even though it asked for it.
TYPE: Stop of the unit in all mode.
SOLUTION:
Is speed controller under power?
Start the unit in ventilation mode.
Check the proper working of MODBUS
TCP/IP communication (contact Lebrun
). Check on the display of the speed
controller if ”Auto ON” is selected.
YE
S
Check the circuit breaker Q3B.0. If
the problem goes on, contact Lebrun .
NO
D044
CAUSE: Defect Inverter 230 V (CV2).
TYPE: Stop of the unit in all operating mode
SOLUTION: Check the circuit breaker Q10.3
D045
CAUSE: Defect delivery temperature sensor.
TYPE:
SOLUTION: Inspect the cable U1-TT1.3 and connection to U1 electrical cabinet.
D046
CAUSE: The number of successive start of the compressor positive is larger
than 10 in an hour.
TYPE: Stop of the unit in cooling mode
SOLUTION: - Reset the unit.
- Restart the unit.
- Check the low pressure with manometer PI2A or PT2A.
- Check that there is no leak in the cooling circuit.
- If the problem goes on, contact Lebrun .
– 112 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D047
CAUSE: Failure comes from the speed controller of the condenser SC3A (pos-
itive circuit)
TYPE: Stop of the unit in cooling mode
SOLUTION: Look at the alarm on the speed controller by the PLC display (See
Chapter 2)
D048
CAUSE: The Q3A.0 circuit breaker (condenser fan circuit breaker, positive
circuit) switched off.
TYPE: Stop of the unit in cooling mode
SOLUTION:
Did the Q3A.0 circuit
breaker switch off?
Restart the Q3A.0 circuit breaker.
Reset the PLC.
Restart the group measuring the
value of the current consumed
by each condenser fan (after
the circuit breaker). If the
problem goes, contact Lebrun .
YE
S
Does the auxiliary contact
Q3A.0 work well? (measure
with a ohm-meter off power).
Check the communication
MODBUS TCP/IP and
the cable U1-SC3A-3
Check the wiring
at the PLC card
TM241CEC24T
(K80.0) terminal I1.1.
If the problem goes
on, contact Lebrun .
Y
E
S
Replace the Q3A.0
auxiliary contact.
N
O
NO
D049
CAUSE: Defect PTC probe of condenser fans of condenser positive.
TYPE:
SOLUTION: Open motor box and inspect cable and connection.
– 113 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
D050
CAUSE: The PLC did not receive the information that the speed controller
SC3A started even though it asked for it.
TYPE: Stop of the unit in all mode.
SOLUTION:
Is speed controller under power?
Start the unit in ventilation mode.
Check the proper working of MODBUS
TCP/IP communication (contact Lebrun
). Check on the display of the speed
controller if ”Auto ON” is selected.
YE
S
Check the circuit breaker Q3A.0. If
the problem goes on, contact Lebrun .
NO
– 114 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.3.3.2 Cooling Mode
That section presents a non-exhaustive list of problems that can occur when the unit is in cooling
mode and their solution.
Cooling compressor fails to start (red lamp is off).
Is the fan in operation
Check the circuit
breaker for the opera-
tion of the PLC Q10.4
YE
S
Is there a partial or com-
plete loss of refrigerant charge.
Check the pressure on
the manometers PI3.1
and PI2.1. This pressure
must be up to 2,5 Bar to
permit the operation of
the compressor.Repair
leak and recharge system.
Y
E
S
Is there a default
on the pressure
sensor PT2.1?
Check the value
of the PT2.1 on
the PLC and
compare with the
manometer PI2.1
Y
E
S
See next
Page.
N
O
N
O
NO
– 115 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Suction pressure
too low (internal
pressure switch).
Automatic restart
of the compressor
when the pressure
is up to 1 bar.
YE
S
Waiting for short delay?
Automatic restart
of the compressor
after 2 minutes.
NO
Noisy compressor.
Is one or more expansion
valve in ”open” position (in-
dicated by abnormally
cold suction line)?).
Check superheat.
Adjust or replace
valve. Control the
operation of the direct
expansion regulator.
YE
S
If electrical repair has been
made to unit, check compres-
sor electrical power 3-phase
for proper phase connections.
NO
– 116 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
System cooling output poor.
Is there flash gas in
liquid refrigerant line
(indicated by a foamy
or bubbly sight glass)?
Locate and repair leak
in refrigerant system.
Recharge refrigerant
to proper levels.
YE
S
Is the electronic expansion
valve not running correctly?
Control the opera-
tion of the direct
expansion regulator.
Y
E
S
Is the drier/strainer
clogged (feels cool
to the touch)?
Replace
drier/strainer
Y
E
S
See next
Page.
N
O
N
O
NO
– 117 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Is the evaporator coil dirty?
Clean coil.
YE
S
High ambient temperature
(more than 40oC)
and/or air flow too high.
NO
Discharge pressure too high.
Is the condenser
air flow too low?
Check speed controller
of the condenser.
chack fan operation.
clean coil if required
YE
S
Is there air or any other non-
condensable gas in system?
Evacuate system and
recharge. Install
new drier/strainer.
Y
E
S
If there is an over-
charge of refrigerant,
purge or remove
excess from high
side of system.
N
O
NO
– 118 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Discharge pressure too low.
Is there a Lack of refrigerant (in-
dicated by bubbles in sight glass)?
Repair leak and recharge system.
Y
E
S
Suction pressure too high.
Is the expansion valve not running correctly?
Repair or replace valve, if necessary.Controlthe operation of the direct expansion regulator.
Y
E
S
– 119 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
Suction pressure too low.
Is there a lack of refrigerant
(flash gas in liquid refrigerant
line indicated by a foamy
or bubbly sight glass)?
Repair leak
and recharge.
Y
ES
Is the drier/strainer clogged
(feels cool to the touch)?
Replace
drier/strainer.
Y
E
S
Is the expansion
valve not running
correctly?
Replace valve
if necessary.
Control the
operation of
the direct
expansion
regulator.
Y
E
S
Is the Air side
of coil dirty?
Clean
coil.
Y
E
S
If the air flow
is too low,
check the air
flow at the
unit outlet.
N
O
N
O
N
O
N
O
– 120 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.3.3.3 Ventilation mode
The fan is running but the operation is not correct :
- Air flow too low
- Vibrations
- Abnormal noise
– 121 –
Operating Manual
COMBO 20
V. January 2021
Maintenance
3.3.3.4 Operating modes starting
Engine is running and voltage is good but it is impossible to start the unit’s operating
modes (cooling or ventilation).
Is the circuit
breaker of the
PLC off (Q10.4)?
Engage the
circuit breaker of
the PLC. Check
the intensity.
Y
ES
Are the fuses of
the current trans-
former burnt?
Replace by new fuses (4A
aM). Check the intensity.
Y
E
S
Is the circuit
breaker 220 V off
(Q10.7 and Q10.8)?
Engage
the circuit
breaker
220 V.
Check the
intensity.
Y
E
S
If the PLC is
faulty (red lamp in
the PLC), then :
- Cut the circuit
breaker of the PLC.
- Retry to engage
this circuit breaker.
- If the PLC is
always in default, it
must be replaced.
N
O
N
O
N
O
– 122 –
Operating Manual
COMBO 20
V. January 2021
123
CHAPTER 4
Parts List
4.1 Nomenclature 1237909: COMBO 20
Figure 4.1: 1237909: COMBO 20 - View 1
S.A. LEBRUN - 13, rue Gérard - 7020 NIMY (Belgium), Phone: +32 65 403030, Fax: +32 65 346017
E-mail: info@lebrun.eu - Bank account number (IBAN): BE54 3700 1714 0997
BIC: BBRUBEBB - TVA: BE421.297.922 - Registration number: 421.297.922/08.27.12
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.2: 1237909: COMBO 20 - View 2
– 124 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.3: 1237909: COMBO 20 - View 3
– 125 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.1: Nomenclature 1237909: COMBO 20
Nomenclature 1237909: COMBO 20
Mark Description Ref. Lebrun Qtty
1 1237912 COIL BOX 1 ASSEMBLY 1
2 1237911 AIR FLOW SYSTEM 1
3 1237913 COIL BOX 2 ASSEMBLY 1
4 1238040 BODYWORK ASSEMBLY 1
5 1238038 CONDENSOR 1 ASSEMBLY 1
6 1238039 CONDENSOR 2 ASSEMBLY 1
7 1237914 ELECTRICAL ASSEMBLY 1
8 1237910 COOLING GROUP 1
9 1243834 INSTRUMENTATION ASSEMBLY 1
10 1242369 VFD ASSEMBLY 1
11 1244021 CONDENSATE ASSEMBLY 1
12 1238927 GENSET ASSY GF20C T3 1
15 1250086 PIPES CIRCUIT 1 1
16 1250087 PIPES CIRCUIT 2 1
17 1244022 Electrical component cooling system 1
18 1244038 SIGNS ASSEMBLY 1
– 126 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.2 Nomenclature 1237910: Cooling group
Figure 4.4: 1237910: Cooling group - View 1
– 127 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.5: 1237910: Cooling group - View 2
– 128 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.6: 1237910: Cooling group - View 3
– 129 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.7: 1237910: Cooling group - View 4
– 130 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Nomenclature 1237910: Cooling group
Mark Description Ref. Lebrun Qtty
1 1237012 COMPRESSOR Z30-126Y 1
2 1243895 COOLING GROUP FRAME 1
3 1243897 COMPRESSEUR CONDENSATE TANK 2
4 1237345 COMPRESSOR Z40-154Y 1
5 1499026 TRILLINGSDEMPER ANACONDA 2”5/8 - VS-2-5/8 1
6 2551017 Elbow 90◦ MF - 2” 5-8 - short - copper 2
7 1243896 COOLING GROUP FRAME SUPPORT 1
8 1499025 TRILLINGSDEMPER ANACONDA VS-2”1/8 1
9 2551016 Elbow 90◦ MF - 2” 1-8 - short - copper 5
10 1499024 TRILLINGSDEMPER ANACONDA VS-1”5/8 1
11 2551015 Elbow 90◦ MF - 1” 5-8 - long - copper 1
12 2551014 Elbow 90◦ MF - 1” 5-8 - short - copper 2
13 2748320 + 3534020 Hot gas valve 1
14 1268136 Coil set 018F7363 - Cable 2
15 2463899 Collar HILTI - MPN-RC 101.6 99-104 B 1
16 2463836 Collar HILTI - MPN-RC 1” 33-37 A 3
17 2551259 Elbow 45◦ MF - 1”5/8 - copper 4
18 1244039 PIPE SUPPORT 1
19 1471628 Collar Armafix AF - FX-4-54/57 1
20 2463840 Collar HILTI - MPN-RC 37-41 A 2
21 1471630 Collar Armafix AF - FX-4-70 1
22 24638114 Collar HILTI - MPN-RC 114-118 B 1
23 1244529 PIPE SUPPORT 1
24 2551120 Elbow 90◦ FF - 2” 1-8 - short - copper 2
25 2551026 Elbow 90◦ MF - 2” 5-8 - long - copper 1
26 2551025 Elbow 90◦ MF - 2” 1-8 - long - copper 1
27 2551234 Elbow 45◦ FF - 1” 5-8 - copper 1
28 2551003 Elbow 90◦ MF - 0” 1-2 - short - copper 3
29 2554425 Reducer MF - 1”1-8 - 0”7-8 - copper 1
30 1245577 Expansion valve collector 1
31 1499023 TRILLINGSDEMPER ANACONDA 1”3/8 - HENRY - VS 1”3/8 1
32 2551258 Elbow 45◦ MF - 1” 3-8 - copper 3
33 2551121 Elbow 90◦ MF - 1” 3-8 - long - copper 2
34 1243738 SOLENOID VALVE EVR8 1/2” TO BRAZE 2
35 2554429 Reducer MF - 1”3-8 - 0”7-8 - copper 1
36 2564303 Schrader raccord 1-4 SAE x 1-4 NPT 1
37 2564312 Schrader raccord 1/4 SAE Flare x 1/8 NPT 1
38 3115CABCF054050 Cablofil CF54/50/503 mm 1
39 2551012 Elbow 90◦ MF - 1” 3-8 - short - copper 2
40 2551113 Elbow 90◦ FF - 1” 3-8 - short - copper 1
41 2564005 Bump BSL 1-4 2
42 2722505 Charging valve 1/4SAE - 1/4 NPT 3
43 1245030 Expansion valve collector 1
continued on next page
– 131 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.2: Nomenclature 1237910: Cooling group
continued from previous page
Nomenclature 1237910: Cooling group
Mark Description Ref. Lebrun Qtty
44 2533112 BRASS TE EQUAL 1/4FPT 1
45 2524114 NIPPLE BRASS 1/4MPT 1
46 2551105 Elbow 90◦ FF - 0” 1-2 - short - copper 1
47 2463850 Collar HILTI MPN-S 2” 60-66 A 2
48 1471604 Collar Armafix AF - FX-2-35/38 2
49 1250186 PIPE SUPPORT 2 COIL 2 1
50 1471600 Collar Armafix AF - FX-2-10/12 2
51 FIXCOL0010 Collarr HILTI MPN-S 35-39 A 2
52 1431036 Copper pipe 1”3-8 1
53 1431036 Copper pipe 1”3-8 1
54 1431036 Copper pipe 1”3-8 1
55 1431053 Copper pipe 2”1-8 1
56 1431053 Copper pipe 2”1-8 1
57 1431053 Copper pipe 2”1-8 1
58 1431053 Copper pipe 2”1-8 1
59 1431012 Copper pipe 1-2” 2
60 1431012 Copper pipe 1-2” 2
61 1431012 Copper pipe 1-2” 1
62 1431067 Copper pipe 2”5-8 1
63 1431067 Copper pipe 2”5-8 1
64 1431023 Copper pipe 7-8” 1
65 1431023 Copper pipe 7-8” 1
66 1431042 Copper pipe 1”5-8 1
67 1431042 Copper pipe 1”5-8 1
68 1431042 Copper pipe 1”5-8 1
– 132 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.3: Nomenclature Air flow system: 1237911
4.3 Nomenclature 1237911: Airflow system
Figure 4.8: 1237911: Air flow system
Nomenclature Air flow system: 1237911
Mark Description Ref. Lebrun Qtty
1 Blower 1237032 1
– 133 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.4 Nomenclature 1237912: Coil box A assembly
Figure 4.9: Coil Box A assembly: 1237912 - View 1
– 134 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.10: Coil Box A assembly: 1237912 - View 2
– 135 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Nomenclature Coil box A assembly: 1237912
Mark Description Ref. Lebrun Qtty
1 3512026 Sensor NTC IP68 6x40mm 2
2 1237722 COIL BOX A 1
3 1238757 Universal frame 501x764x100 2
4 1238756 Air filter frame 1
5 1237797 Air filter F7 - 483x746x48mm 2
6 1237798 Air prefilter G4 - 483x746x25mm 2
7 1238734 AIR DUCTING INLET SUPPORT 3
8 1244396 Flexible sleeve 1
9 1243898 Spacer 1
10 1246556 Sleeves Flange 4
11 1246555 Sleeves flange 4
12 1218418 NEOPRENE FOAM JOIN 3
13 1600001 POLYETHYLENE FOAM JOIN 1
14 1245798 SUCTION CONE ASSEMBLY 1
15 2551008 Elbow 90◦ MF - 0”7/8 - short - copper 4
16 2554417 Reducer MF - 0”7/8 - 0”1/2 - copper 2
17 2554223 Reducer FF - 0”7/8 - 0”3/4 - copper 2
18 1243738 SOLENOID VALVE EVR8 1/2” TO BRAZE 2
19 2551256 Elbow 45◦ MF - 0”7/8 - copper 1
20 2551003 Elbow 90◦ MF - 0”1/2 - short - copper 220 2748310 + 3534020 Expansion valve without sightglass 2
22 1268136 Coil and cable 2
23 3534104 Hot Gas Bypass Capacity Regulators LG 12-22 2
24 2554248 Reducer FF - 1”3/8 - 1”1/8 - copper 1
25 1245047 Expansion valve collector 1
26 2551011 Elbow 90◦ MF - 1”1/8 - short - copper 1
27 2850004 LIQUID INDICATOR 1”1/8 SG S 1
28 2551229 Elbow 45◦ FF - 0” 7-8 - copper 1
29 1245576 Expansion valve collector 1
30 2554425 Reducer MF - 1”1/8 - 0”7/8 - copper 1
31 2748320 + 3534020 Hot gas valve 1
32 2722505 Charging valve 1/4SAE - 1/4 NPT 2
33 2564005 Bump BSL 1/4” 1
34 2524114 NIPPLE BRASS 1/4MPT 1
35 2533112 BRASS TE EQUAL 1/4FPT 1
36 2551017 Elbow 90◦ MF - 2”5/8 - short - copper 2
37 2551124 Elbow 90◦ FF - 2”5/8 - short - copper 1
38 1245015 Expansion valve collector 1
39 1250163 PIPE SUPPORT 3
40 2463819 RC Collar HILTI - MPN-RC 3/8” 17-20 A 2
41 1471604 Collar Armafix AF - FX-2-35/38 2
42 2463850 Collar HILTI MPN-S 2” 60-66 A 2
43 1250175 HOT GAZ COLLECTOR SUPPORT 1
continued on next page
– 136 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.4: Nomenclature 1237912: Coil box A assembly
continued from previous page
Nomenclature Coil box A assembly: 1237912
Mark Description Ref. Lebrun Qtty
44 1431067 Copper pipe 2”5-8 1
45 1431012 Copper pipe 1-2” 2
46 1431012 Copper pipe 1-2” 1
47 1431012 Copper pipe 1-2” 1
48 1431019 Copper pipe 3-4” 2
49 1431023 Copper pipe 7-8” 1
50 1431023 Copper pipe 7-8” 1
51 1431023 Copper pipe 7-8” 1
52 1431028 Copper pipe 1”1-8 1
– 137 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.5 Nomenclature 1237913: Coil box B assembly
Figure 4.11: Coil Box B assembly: 1237913
– 138 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.5: Nomenclature 1237913: Coil box B assembly
Nomenclature Coil box B assembly: 1237913
Mark Description Ref. Lebrun Qtty
1 1237723 COIL BOX B 1
2 1240292 COIL A/B SUPPORT 2
3 1245658 INLET CONE ASSEMBLY 1
4 1245794 OUTLET CONE ASSEMBLY 1
5 2551008 Elbow 90◦ MF - 0”7/8 - short - copper 2
6 2748310 + 3534020 Expansion valve without sightglass E3V45SWR10 2
7 2554414 Reducer MF - 0”3/4 - 0”5/8 - copper 2
8 3534104 Hot Gas Bypass Capacity Regulators LG 12-22 2
9 2463824 Collar HILTI - MPN-RC 1-2” 21-24 A 1
10 3512026 Sensor NTC IP68 6x40mm 2
11 1218418 NEOPRENE FOAM JOIN 2
12 1250185 COIL B PIPE SUPPORT 1 1
13 1431015 Copper pipe 5/8” 2
– 139 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.6 Nomenclature 1238038: Condenser A assembly
Figure 4.12: 1238038: Condenser 1 assembly - View 1
– 140 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.6: Nomenclature Condenser A assembly: 1238038
Nomenclature Condenser A assembly: 1238038
Mark Description Ref. Lebrun Qtty
1 1237724 CONDENSER A 1
2 1237991 CONDENSER FAN 2
3 1244040 CONDENSER SHEET METAL 1
4 3159451 25 PVC double pipe fixation diam. 25mm 3
5 3115028 PVC pipe diameter 25 mm - Length 700mm 2
6 3115001 Bushing 16 - 20 - 28 thickness 2mm 4
7 3115032 INLET PVC PIPE DIAMETER 25mm 4
– 141 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.7 Nomenclature 1238039: Condenser B assembly
Figure 4.13: 1238039: Condenser 2 assembly - View 1
– 142 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.7: Nomenclature Condenser B assembly: 1238038
Nomenclature Condenser B assembly: 1238038
Mark Description Ref. Lebrun Qtty
1 1237725 CONDENSER B 1
2 1237991 CONDENSER FAN 2
3 1244040 CONDENSER SHEET METAL 1
4 3159451 25 PVC double pipe fixation diam. 25mm 6
5 3115028 PVC pipe diameter 25 mm - Length 700mm 2
6 3115001 Bushing 16 - 20 - 28 thickness 2mm 4
7 3115032 INLET PVC PIPE DIAMETER 25mm 8
8 3115028 PVC pipe diameter 25 mm - Length 900mm 2
– 143 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.8 Nomenclature 1250086: Piping circuit A assembly
Figure 4.14: Piping circuit A assembly - View 1: 1250086
– 144 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.15: Piping circuit A assembly - View 2: 1250086
– 145 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.16: Piping circuit A assembly - View 3: 1250086
– 146 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.8: Nomenclature Piping circuit A assembly: 1250086
Nomenclature Piping circuit A assembly: 1250086
Mark Description Ref. Lebrun Qtty
1 1240612 FILTER DRIER 759s - 1”1/8 1
2 2564005 Bushing BSL 1-4 1
3 2722505 Charge valve vertical 1/4SAE - 1/4 NPT 1
4 2564003 Brass Bushing 1/2 FPT 1
5 2701241 5231B Pressure relief valve 1/2”NPT 24.1 bar 1
6 2522453MFL Brass Elbow 1/2 1
7 2553111 Tee FFF - 1” 1-8 - Copper 1
8 2551015 Elbow 90◦ MF - 1” 5-8 - long - Copper 1
9 2551014 Elbow 90◦ MF - 1” 5-8 - short - Copper 1
10 2551008 Elbow 90◦ MF - 0” 7-8 - short - Copper 1
11 2551112 Elbow 90◦ FF - 1” 1-8 - short - Copper 1
12 2562113 Flare Nut 5/8” SAE NS4-10 1
13 3118433 CABLE GLAND M32 PVC 1
14 2551107 Elbow 90◦ FF - 0” 5-8 - short - Copper 2
15 2463828 HILTI collar - MPN-RC 3/4” 25-28 A 2
16 2463824 HILTI collar - MPN-RC 1/2” 21-24 A 1
17 3118432 Locknut M32 PVC 1
18 2551234 Elbow 45◦ FF - 1” 5-8 - Copper 2
19 2551109 Elbow 90◦ FF - 0” 7-8 - short - Copper 1
20 1431042 Copper pipe 1”5-8 1
21 1431042 Copper pipe 1”5-8 1
22 1431042 Copper pipe 1”5-8 1
23 1431023 Copper pipe 7-8” 1
29 1431015 Copper pipe 5-8” 1
25 1431015 Copper pipe 5-8” 1
26 1431028 Copper pipe 1”1-8 1
27 1431028 Copper pipe 1”1-8 1
28 1431028 Copper pipe 1”1-8 1
29 1431028 Copper pipe 1”1-8 1
30 1431015 Copper pipe 5-8” 1
31 1431023 Copper pipe 7-8” 1
– 147 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.9 Nomenclature 1250087: Piping circuit B assembly
Figure 4.17: Piping circuit B assembly - View 1: 1250087
– 148 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.18: Piping circuit B assembly - View 2: 1250087
– 149 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.19: Piping circuit b assembly - View 3: 1250087
– 150 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.9: Nomenclature Piping circuit B assembly: 1250087
Nomenclature Piping circuit B assembly: 1250087
Mark Description Ref. Lebrun Qtty
1 2564003 Union 1/2 FPT 1
2 2701241 5231B PRESSURE RELIEF VALVE 24.1 bar 1
3 2522453MFL Brass Elbow 1/2 1
4 2551014 Elbow 90◦ MF - 1” 5-8 - short - copper 1
5 2551008 Elbow 90◦ MF - 0” 7-8 - short - copper 3
6 2551112 Elbow 90◦ FF - 1” 1-8 - short - copper 1
7 2562113 Nut 5-8 SAE Flare NS4-10 1
8 3118433 CABLE GLAND M32 PVC 1
9 2551107 Elbow 90◦ FF - 0” 5-8 - short - copper 3
10 2463824 Collar HILTI - MPN-RC 1-2 pouce 21-24 A 3
11 3118432 M32 nut 1
12 1237728 FILTER DRIER DML 167s - 7/8” 1
13 2850008 LIQUID INDICATOR 0”7/8 SG S 1
14 2551233 Elbow 45◦ FF - 1” 3-8 - copper 2
15 2554436 Reducer MF - 1”5-8 - 1”3-8 - copper 1
16 2554425 Reducer MF - 1”1-8 - 0”7-8 - copper 1
17 2553109 Tee FFF - 0” 7-8 - copper 1
18 2551113 Elbow 90◦ FF - 1” 3-8 - short - copper 1
19 2551004 Elbow 90◦ MF - 0” 5-8 - short - copper 2
20 2551125 Elbow 90◦ FF - 0” 5-8 - long - copper 1
21 2551029 Elbow 90◦ MF - 0” 5-8 - long - copper 1
22 1245048 Expansion valve collector 1
23 2554431 Reducer FF - 1”3-8 - 0”7-8 - copper 1
24 2463836 Collar HILTI - MPN-RC 1” 33-37 A 2
25 1250105 Pipe support 1 2
26 1250141 Pipe support 2 1
27 2463816 Collar HILTI - MPN-RC 1-4 pouce 12-16 A 1
28 1431015 Copper pipe 5-8” 1
29 1431015 Copper pipe 5-8” 1
30 1431015 Copper pipe 5-8” 1
31 1431015 Copper pipe 5-8” 1
32 1431015 Copper pipe 5-8” 1
33 1431036 Copper pipe 1”3-8 1
34 1431036 Copper pipe 1”3-8 1
35 1431036 Copper pipe 1”3-8 1
36 1431036 Copper pipe 1”3-8 1
37 1431023 Copper pipe 7-8” 1
38 1431023 Copper pipe 7-8” 1
39 1431023 Copper pipe 7-8” 1
40 1431023 Copper pipe 7-8” 1
– 151 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.10 Nomenclature 1243834: Instrumentation
Figure 4.20: Instrumentation: 1243834 - View 1
– 152 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.21: Instrumentation: 1243834 - View 2
– 153 –
Operating Manual
COMBO 20
V.January 2021
Parts List
Table 4.10: Nomenclature 1243834: Instrumentation
Nomenclature Instrumentation: 1243834
Mark Description Ref. Lebrun Qtty
1 3641041 PRESSURE JAUGE 0/160 mbar TO FIT 1
2 3522203 PRESSURE TRANSMITTER AIR 0-10000 Pa 1
3 3522300 AIR PRESSURE SWITH 1
4 1243891 INSTRUMENTATION PANEL 1
5 3640005 PRESSURE JAUGE L.P. DIAM 063 ZF63G-I 2
6 3640001 PRESSURE JAUGE H.P. DIAM 063 PF63G-I 2
7 3522107 PRESSURE SWITCH HP MANU. RESET 2
8 3533112 PRESSURE TRANSMITTER BP 1-12 bar 1/4” 2
9 2463832 HILTI COLLAR - MPN-RC 29-32 A 4
10 3523005 PRESSURE TRANSMITTER HP 0-25 bar 1/4” 2
11 3115CABCF054050 CABLOFIL CF54/50/803mm 1
12 3522316 MALE STUD ELBOW BSPP THREAD - G1/4 - 10mm 1
13 3522310 FEMALE STUD ELBOW BSPP THREAD - G1/4 - 10mm 4
14 3115001 BUSHING 16 - 20 - 28 THICK. 2mm 12
15 2187013 THREADED ROD M8 - LENGTH 100mm 1
16 3512026 TEMP. SENSOR NTC IP68 6x40mm 1
17 3115031 PROTECTION JOIN 1
18 3522205 PRESSURE TRANSMITTER AIR (OPTION) 0-1000 Pa - G1-4 1
– 154 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.11 Nomenclature 1237914: Electrical assembly
Figure 4.22: Electrical assembly: 1237914 - View 1
– 155 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.23: Electrical assembly: 1237914 - View 2
– 156 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.24: Electrical assembly: 1237914 - View 3
– 157 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.11: Nomenclature Electrical assembly: 1237914
Nomenclature Electrical assembly: 1237914
Mark Description Ref. Lebrun Qtty
1 1241912 Electrical box 1
2 1244043 Electrical box frame 1
3 3115CABCF054200 Cablofil CF54/200/903 mm 2
4 3115CABCF054150 Cablofil CF54/150/403 mm 1
5 3115CABCF054300 Cablofil CF54/300/1903 mm 1
6 3115CABCF054100 Cablofil CF54/100/603 mm 2
7 3311302 Steel Box 1
8 3118683 CABLE GLAND M25 6
9 1243893 CABLE PASS SHEET METAL 1
10 3118432 M32 nut 8
11 3118433 CABLE GLAND M32 PVC 8
12 3115CABCF054150 Cablofil CF54/150/1403 mm 1
13 3115CABCF054150 Cablofil CF54/150/303 mm 1
14 38935 AMBER BEACON 1
15 3118095 2x4G WITH GPS ANTENNA 1
16 3115CABCF030050 Cablofil CF30/50/2004 mm 1
17 1244794 PV90-4 OUTLET DUCTING 1
18 1240157 PV90-4 1
19 PHO0801662 SEALING FRAME FOR CABLE ENTRY 1
20 1660009 BRUSH SEAL H:30mm 2 rows 1
21 3115CABCF054050 Cablofil CF54/50/503 mm 1
22 1248515 PV90 ANTIVIBRATION PLATE 4
– 158 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.12 Nomenclature 1242369: VFD assembly
Figure 4.25: VFD assembly: 1242369
– 159 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.12: Nomenclature VFD assembly: 1242369
Nomenclature VFD assembly: 1242369
Mark Description Ref. Lebrun Qtty
1 1242370 BLOWER VFD ASSEMBLY 1
2 1242371 CONDENSER FANS VFD ASSEMBLY 1
– 160 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.13 Nomenclature 1242370: BLOWER VFD assembly
Figure 4.26: BLOWER VFD assembly: 1242370
– 161 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.13: Nomenclature BLOWER VFD assembly: 1242370
Nomenclature BLOWER VFD assembly: 1242370
Mark Description Ref. Lebrun Qtty
1 3540060 BLOWER VFD FC102 18kW 1
2 1298X-0651 BLOWER VFD FRAME 1
3 3118433 CABLE GLAND M32 PVC 1
4 3118432 LOCKNUT M32 PVC 1
5 3118302 CABLE GLAND M32 METAL BRUSH 1
6 3540045 Side Fixture Mounting Kit for VFD 1
7 31150023 GROMMET 7x3.2-6.5mm 1
8 1473013 LOCKNUT M25 PVC 1
9 3118672 CABLE GLAND M25 PVC 1
10 3118310 RUBBER JOIN FOR RJ45 1
– 162 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.14 Nomenclature 1242371: CONDENSER FANS VFD assembly
Figure 4.27: CONDENSER FANS VFD assembly: 1242371
– 163 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.14: Nomenclature CONDENSER FANS VFD assembly: 1242371
Nomenclature CONDENSER FANS VFD assembly: 1242371
Mark Description Ref. Lebrun Qtty
1 1237992 CONDENSER VFD FC102 5.5kW 2
2 1243943 VFD FRAME 1
3 3118861 3225 REDUCER M32-M25 PVC 1
4 3118861 2520 REDUCER M25-M10 PVC 1
5 3118432 LOCKNUT M32 PVC 1
6 3118657 CABLE GLAND M20 PVC 1
7 3118862 3225 REDUCER M32-M25 METAL 1
8 3118244 LOCKNUT M32 METAL 1
9 3118301 CABLE GLAND M25 METAL BRUSH 1
10 31150023 GROMMET 7x3.2-6.5mm 1
11 1473013 LOCKNUT M25 PVC 2
12 3118672 CABLE GLAND M25 PVC 1
13 3118310 RUBBER JOIN FOR RJ45 1
14 3118725 PLUG M25 PVC 1
– 164 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.15 Nomenclature 1244021: Condensate assembly
Figure 4.28: CONDENSATE ASSEMBLY: 1244021
– 165 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.15: Nomenclature 1244021: CONDENSATE ASSEMBLY
Nomenclature CONDENSATE ASSEMBLY: 1244021
Mark Description Ref. Lebrun Qtty
1 1244381 Ball siphone 1
2 2535303 Reducing Bushes, PVC-U metric-Rp, d-Rp 32-3/4 1
3 1246934 PVC UNION 32 MM 1
4 2525061 Brass Elbow 3/4 1
5 2522574 Elbow PVC Pressure - Diam.32mm - 90◦ 1
6 1250082 BALL SIPHON SUPPORT 1
7 2522700 PVC pipe Diam. 032mm 1
– 166 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.16 Nomenclature 1244022: Electrical parts cooling system
Figure 4.29: Electrical parts cooling system - View 1: 1244021
– 167 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.30: Electrical parts cooling system - View 2: 1244021
– 168 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.31: Electrical parts cooling system - View 3: 1244021
– 169 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.16: Nomenclature 1244022: Electrical parts cooling system
Nomenclature Electrical parts cooling system: 1244022
Mark Description Ref. Lebrun Qtty
1 Tank connection PVC - 25-32 2546505 3
2 Tee PVC pressure FFF - Diam. 25mm ERI10046305 2
3 Elbow PVC Pressure - Diam. 25mm - 90◦ 2522573 4
4 Pipe fixation diameter 25 mm 3159450 25 2
5 Elbow PVC Pressure - Diam. 25mm - 45◦ 2522561 2
6 Fixation square 1
7 PVC pipe PN16 Diam. 025mm 2522825 1
8 PVC pipe PN16 Diam. 025mm 2522825 1
9 PVC pipe PN16 Diam. 025mm 2522825 1
10 PVC pipe PN16 Diam. 025mm 2522825 1
11 PVC pipe PN16 Diam. 025mm 2522825 1
12 PVC pipe PN16 Diam. 025mm 2522825 1
13 PVC pipe PN16 Diam. 025mm 2522825 1
14 PVC pipe PN16 Diam. 025mm 2522825 2
– 170 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.17 Nomenclature 1238040: Bodywork assembly
Figure 4.32: 1238040: Bodywork - View 1
– 171 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.33: 1238040: Bodywork - View 2
– 172 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.17: Nomenclature Bodywork assembly: 1238040
Nomenclature Bodywork assembly: 1238040
Mark Description Ref. Lebrun Qtty
1 1238041 BODYWORK 1
2 1298X-0600 Hose tray 1
3 1398SE-1266 Rear axle 7500Kg 1
4 1398214 Wheel 23x10-12 16 2
5 1398SE-1264 Front axle 3250 Kg 1
6 1398213 Wheel 21x8-9 14 2
7 1295X-0091 Cap 1
8 1243892 AIR INLET GRID PV90 1
9 1250083 BALL SIPHON TRAP 1
10 1251898 FRONT AXLE MUDGUARD PCA30 2
– 173 –
Operating Manual
COMBO 20
V. January 2021
Parts List
4.18 Nomenclature 1244038: Signs assembly
Figure 4.34: Signs assembly - View 1: 1244038
– 174 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Figure 4.35: Signs assembly - View 2: 1244038
– 175 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.18: Nomenclature 1244038: Signs assembly
Nomenclature Signs assembly: 1244038
Mark Description Ref. Lebrun Qtty
1 1399X-0055 DIESEL sticker 1
2 1399X-0027 Speed limit sticker 25km/h 2
3 1365X-0131 PCA ID plate 1
4 1222928 PCA40 towbar sticker 2
5 3210003 White reflector diam 60 mm 2
6 3210004 Red reflector diam 60 mm 2
7 1252129 ZEBRA CENTRAL REAR PCA20 COMBO STICKER 1
8 1474X-0023 Anchoring position sticker 4
9 1474X-0026 Lifting position sticker 4
10 ELEETI0010 50 50 DANGER STICKER 50x50mm 1
11 1244159 GF20C-NH INSTRUCTION SHEET 1
12 1218459 YELLOW SQUARE REFLECTIVE FILM 24
13 1226122 LOW SULFUR DIESEL Sticker (Option) 1
14 1399X-0093 GREY SAS STICKER 275-540mm - RAL7024 5
15 1235499 STICKER APU-OFF 360X264 RAL7024 6
16 1267001 WHEEL NUTS TORQUE STICKERS 260N.m 4
– 176 –Operating Manual
COMBO 20
V. January 2021
Parts List
4.19 Nomenclature 1238927: Generator set
Figure 4.36: 1238927: Generator
– 177 –
Operating Manual
COMBO 20
V. January 2021
Parts List
Table 4.19: Nomenclature 1238927: GENERATOR
Nomenclature GENERATOR: 1238927
Mark Description Ref. Lebrun Qtty
1 GEN120-T3 CUMMINS QSB6.7 1238928 1
2 FUEL TANK ASSY 1238930 1
3 EXHAUST, GEN-120 1238929 1
4 PROTECTIVE PLATE FOR DEEPSEA 1229590 1
5 RADIATOR SEALING PLATE 1247636 1
6 FUEL FILL ASSY 1242404 1
– 178 –
Parts Book
Project Number: 560297
Serial Number: P56830
Model: GEN-120
Customized Bill of Materials Date:
2020-03-03
Printed:
Thu, 19 Mar 2020 03:50:11 -0400
Table of Contents
Part Number Description Page Number
1056553-400 CURRENT TRANSFORMER 400:5 0
1201072 PANEL ASSY, ENGINE RELAY 3
1108480 RADIATOR,GPU_412_418,GCM2 5
1131985 POWER PKG COUPLE SUB-ASM T4 7
1198567 BATTERY AND WIRES INSTALL 9
1198650 COOLANT TANK INSTALL 11
1216051 GENERATOR SUB-ASSEMBLY,120 13
1056553-400_A 
CURRENT TRANSFORMER 400:5 
Item PN Qty UM Description P M O C
1056553-400 EA CURRENT TRANSFORMER 400:5 
Page 1
1056553-400_A 
CURRENT TRANSFORMER 400:5 
This page left intentionally blank
Page 2
1201072_B 
PANEL ASSY, ENGINE RELAY 
Page 3
1201072_B 
PANEL ASSY, ENGINE RELAY 
Item PN Qty UM Description P M O C
1201072 EA PANEL ASSY, ENGINE RELAY 
1 1061904 1 EA PANEL, ENGINE RELAY 
3 1033613 1 EA FUSE, 125 AMP RATING M
4 1018649 1 EA RELAY C
5 1198197 2 EA RELAY, 24VDC, 120A C
100 042113 4 EA WM-W4<480>800 
101 1109736 4 EA SU-RS10-32x3/4"RF<A2/18-8> 
102 1129323 4 EA WM-WS4-<480>A2/18-8 
103 1097992 4 EA NM-NT4x.7R<480>A2/18-8 
104 3100488 4 EA SM-HH6x1x20RF<480>A2/18-8 
105 1098775 4 EA NM-NN6x1R<480>A2/18-8 
106 1077756 1 EA SUJ2484PP#10-32R0.625"FP18-8 
107 1076968 1 EA NUJ2295NN#10-32RP18-8 
Page 4
1108480_G 
RADIATOR,GPU_412_418,GCM2 
Page 5
1108480_G 
RADIATOR,GPU_412_418,GCM2 
Item PN Qty UM Description P M O C
1108480 EA RADIATOR,GPU_412_418,GCM2 C
1 1108480-P1 0 EA CHARGE AIR COOLER CORE 
2 1108480-P2 0 EA RADIATOR CORE 
3 1108480-P3 0 EA SHROUD,RADIATOR/CAC 
4 1108480-P4 0 EA FAN GUARD 
5 1108480-P5 0 EA MOUNTING PANEL,RADIATOR 
6 1067438-P6 0 EA CAP,RADIATOR C
8 1067438-P8 0 EA WASHER 
9 1123340 0 EA SIGHT GLASS, G3/4-14 
10 1111818-P9 0 EA NIPPLE 
Page 6
1131985_B 
POWER PKG COUPLE SUB-ASM T4 
Page 7
1131985_B 
POWER PKG COUPLE SUB-ASM T4 
Item PN Qty UM Description P M O C
1131985 EA POWER PKG COUPLE SUB-ASM T4 
100 1130775 12 EA SU-HH7/16X14X2.0RPGR5 
102 1130777 12 EA SU-W7/16<200>GR8 
103 1130779 8 EA SU-W1/2<200>GR8 
104 1083900 8 EA SUJ2484HH3/8"-16R1"YGR8 
Page 8
1198567_B 
BATTERY AND WIRES INSTALL 
Page 9
1198567_B 
BATTERY AND WIRES INSTALL 
Item PN Qty UM Description P M O C
1198567 EA BATTERY AND WIRES INSTALL 
1 1034362 1 EA SWITCH, BATTERY C
2 1034367-05208 1 EA CABLE, BATTERT, POSITIVE O
3 1034366-1000806 1 EA CABLE, BATTERY, POSITIVE 
4 1031395-1000 2 EA BATTERY, 12V, 1000 CCA M
5 1193292 1 EA BATTERIES TRAY 
7 1031414 4 EA BOLT SET, BATTERY HOLD DOWN 
8 1031413 2 EA FRAME, BATTERY HOLD DOWN 
9 1030291 2 EA PROTECTOR, TERMINAL, RED 
10 1030292 2 EA PROTECTOR, TERMINAL, BLACK 
11 1034369-12 1 EA CABLE, JUMPER O
12 1191748 1 EA BATTERY SWITCH BRACKET 
13 1090769-03108 1 EA CABLE, BATTERY, NEG., W/STUD O
100 1104063 6 EA SM-HH10X1.5X25RF<480>A2/18-8 
101 1098334 6 EA WM-WF10<480>A2/18-8 
Page 10
1198650_B 
COOLANT TANK INSTALL 
Page 11
1198650_B 
COOLANT TANK INSTALL 
Item PN Qty UM Description P M O C
1198650 EA COOLANT TANK INSTALL 
1 1185573 1 EA BRACKET, OVERFLOW TANK 
2 1013369 1 EA TANK, COOLANT/OVERFLOW (4 QTS) C
3 1003378-9 92 IN HOSE, MULTI PURPOSE O
4 591B3-504 5 EA CLAMP,HOSE O.D.5.6-16 
100 3100488 4 EA SM-HH6x1x20RF<480>A2/18-8 
101 1098775 4 EA NM-NN6x1R<480>A2/18-8 
102 1136152 8 EA WM-W6X<200>A2/18.8 
103 1130881 4 EA SM-HH8X1.25X25RF<200>800 
104 1105833 4 EA NM-NN8x1.25R<200>800 
105 1106246 8 EA WM-W8<200>800 
Page 12
1216051_A 
GENERATOR SUB-ASSEMBLY,120 
Page 13
1216051_A 
GENERATOR SUB-ASSEMBLY,120 
Item PN Qty UM Description P M O C
1216051 EA GENERATOR SUB-ASSEMBLY,120 
1 1201563 1 EA GENERATOR, 60HZ, 150KW, 3PH 
2 1043884 5 EA CONNECTOR,WIRE,2/0,3/8",BOTTOM 
3 1043885 5 EA CONNECTOR,WIRE,2/0,3/8",TOP 
4 1015512-14 5 EA CONNECTOR, CORD GRIP, STRAIGHT 
 
Page 14
 
 
 
 
 
 
 
 
 
 
1205981_B (EDM)
ENGINE SUB ASSEMBLY T3 GEN-120
Item PN Description Rev Qty UM
1 1205979 ENGINE, CUMMINS 6.7 TIER 3 GEN A 1 EA
2 1075923 MOUNT ENGINE,QSB6.7 D 1 EA
3 1034919 FAN, RADIATOR B 1 EA
4 1038171-3 ADAPTER, PIPE TO METRIC REL 2 EA
5 58068-1212 ELBOW, 90 DEG., STREET, STEEL REL 1 EA
6 1027004-0604 ELBOW, MULTIPLE BARB, 90 DEG A 1 EA
7 1027005-0604 CONNECTOR, MULTIPLE BARB, BRS REL 1 EA
8 1027005-1612 CONNECTOR, MULTIPLE BARB, BRS REL 1 EA
100 1045940 BOLT,HEX, M10-1.5 X 105MM C 4 EA
101 3300025 WM-W10<480>800 REL 4 EA
102 3300026 WM-W12<480>800 A 4 EA
103 3100034 SM-HH12x1.75x40RF<480>800 REL 4 EA
110 1042580 VALVE,OIL DRAIN,M22-1.5,90 DEG REL 1 EA
Page 1
1205979_A (EDM)
ENGINE, CUMMINS 6.7 TIER 3 GEN
Item PN Description Rev Qty UM
1 1037763-P1 ELEMENT, FUEL FILTER B 1 EA
2 1037763-P2 ELEMENT, FUEL FILTER WATER SEP A 1 EA
3 1033394-P2 FILTER, OIL REL 1 EA
4 1037763-P4 RADIATOR FAN/ALTERNATOR BELT A 1 EA
5 1036735-P5 ALTERNATOR B 1 EA
6 1042216-P7 STARTER, MOTOR A 1 EA
7 1042202-P7 ENGINE OIL DIP STICK REL 1 EA
8 1037763-P8 ENGINE OIL FILLER CAP A 1 EA
9 1043752 CUMMINS OPERATION MANUAL [en] REL 0 EA
10 1043753 CUMMINS MAINTENANCE MANUAL[en] REL 0 EA
11 1043754 CUMMINS SERVICE ASSISTANCE[en] REL 0 EA
12 1043755 CUMMINS TROUBLESHOOTING [en] REL 0 EA
13 1043756 CUMMINS ENGINE FAULTS [en] REL 0 EA
14 1042216-P1 FITTING, VENT, 1/8" ORIFACE D 1 EA
15 1042216-P2 INTAKE MANIFOLD PRESS & TEMP D 1 EA
16 1042216-P3 OIL PRESSURE SENSOR D 1 EA
17 1042216-P4 BAROMETRIC PRESSURE SENSOR D 1 EA
18 1042216-P5 ENGINE SPEED/POSITION SENSOR D 2 EA
19 1042216-P6 FUEL PRESSURE SENSOR D 1 EA
20 1033691-P2 TEMP SENDING UNIT (WATER/OIL) REL 1 EA
Page 1
	List of figures
	List of charts
	Introduction
	Warranty - Standard Conditions
	General warranty
	Safety information
	Safety Hazards
	Safety procedures
	Security rules for R134a
	General information
	Description
	Specifications and capabilities
	Shipping the unit
	Storing the unit
	Operating instruction
	Instruction
	User PLC Display Operation
	PLC Display Operation
	Maintenance
	Servicing
	Maintenance Schedule
	Troubleshooting
	Parts List
	Nomenclature 1237909: COMBO 20 
	Nomenclature 1237910: Cooling group
	Nomenclature 1237911: Airflow system
	Nomenclature 1237912: Coil box A assembly
	Nomenclature 1237913: Coil box B assembly
	Nomenclature 1238038: Condenser A assembly
	Nomenclature 1238039: Condenser B assembly
	Nomenclature 1250086: Piping circuit A assembly
	Nomenclature 1250087: Piping circuit B assembly
	Nomenclature 1243834: Instrumentation
	Nomenclature 1237914: Electrical assembly
	Nomenclature 1242369: VFD assembly
	Nomenclature 1242370: BLOWER VFD assembly
	Nomenclature 1242371: CONDENSER FANS VFD assembly
	Nomenclature 1244021: Condensate assembly
	Nomenclature 1244022: Electrical parts cooling system
	Nomenclature 1238040: Bodywork assembly
	Nomenclature 1244038: Signs assembly
	Nomenclature 1238927: Generator set