Alpha Technologies AlphaGen 5.0kW Auxiliary Power Unit - Manual (Page 5)

Preface
5
031-132-B0-001 Rev. A TM ©2000
5.0kW
Auxiliary Power Unit
TM
Table of Contents
Section 3, Maintenence, continued
3.8 Replacing Engine Control Module ........................................................... 47
3.9 Replacing Flexible Gas Hose .................................................................. 48
3.10 Fuel Conversion - Natural Gas to Liquid Propane ...................................... 49
3.10.1 Pre-regulator/Low Fuel Pressure Switch Replacement ..................... 49
3.10.2 Dual-Fuel Load Block Conversion ................................................. 50
3.11 Fan Replacement Procedure .................................................................. 52
3.12 Muffler Replacement Procedure ............................................................. 53
3.13 Muffler Exhaust Flange Gasket Replacement Procedure ............................. 55
3.14 Gas Solenoid Replacement Procedure ..................................................... 56
3.15 Replacing Cabinet Exhaust Duct Upper Seal ............................................ 57
3.16 Removal and Replacement of Generator Set ............................................ 58
3.17 Maxitrol Pre-Regulator Calibration .......................................................... 61
Section 4, Interconnection
4.1 Alarm Sensor States ........................................................................... 65
4.2 ECM Interface Topology and Connectors ................................................. 66
4.3 Connectors ........................................................................... 67
4.3.1 Gas Hazard Alarm Interface ........................................................ 67
4.3.2 Low Fuel Pressure Interface Connector ......................................... 68
4.3.3 Solenoid ........................................................................... 69
4.3.4 Charger Module – Control Interface Connector ............................... 70
4.3.5 Charger Module - Output Interface Connector ................................ 71
4.3.6 APU Ignition Battery Interface Connector ...................................... 72
4.3.7 Alarm Control Interface to APU Interface Connector (APU-I/O)......... 73
4.3.8 ECM PWR-GRI Interface .............................................................. 74
4.3.9 ECM-PWR GRI Enclosure Sensor Interface Ribbon Cable .................. 75
4.3.10 ECM and PWR-GRI Interface Ribbon Cable..................................... 76
4.3.11 Analog and Logic Power Interface Ribbon Cable ............................. 77
4.3.12 ECM - Enclosure Alarm Interface .................................................. 78
4.3.13 Inverter Battery DC Sense Interface Connector .............................. 79
4.3.14 Battery Charger Control Interface Connector ................................. 80
4.3.15 ECM - APU Control Interface ........................................................ 81
4.3.16 ECM - AC Sense 120/240V Interface............................................. 82
4.3.17 ECM - Alarm Interface & Communications ..................................... 83