Carrier DM-4 Power Pack Wartungshandbuch

DM-4Power PackT- 270Bus AirConditioningUnit

2-1SECTION 2OPERATION2.1 PRE-TRIP INSPECTIONa. Before Starting engine1. Drain water and sediment from fuel tank s ump.2. Check radiator coolant level.

3-1SECTION 3TROUBLE SHOOTINGINDICATION/TROUBLEPOSSIBLE CAUSESREFERENCESECTION3.1 DIESEL ENGINE3.1.1 Engine Will Not StartStarter motor will not crank

3-2INDICATION/TROUBLE POSSIBLE CAUSESREFERENCESECTION3.1.3 Starter Motor Malfunction (CONTINUED)Starter motor turns but piniondoes not engagePinion or

4-1SECTION 4SERVICEWARNINGBeware of V-belts and belt driven components as the unit can be started remotely. Before servicing unit, makesure that the F

4-24.2 PRIMING THE FUEL SYSTEMThe engine is equipped with a mechanical fuel liftpump, it is mounted on the engine next to the injectionpump. This pump

4-34.3.4 Adjusting Engine SpeedRefer to section 1.2 for correct engine speed.To Check Engine Speed:Withtheenginestopped,placeamark(whitepaintforexampl

4-44.3.7Servicing Fuel P umpDue to foreign particles in the fuel, the fuel filtermaybecomepluggedor restricted,andthe enginewill loseca-pacity. The fi

4-58. Turn off and check belt tension.Figure AFigure BFigure 4-5. Removing V-Belt from Engine AdapterDrive SheaveTable 4-1. V-Belt TensionBeltTensionW

4-615. Install compressor in unit by reversing steps 1through 14. It is recommended using new locknuts whenreplacing compressor. Torque bolts to a val

5-1SECTION 5ELECTRICAL5.1 INTRODUCTIONThis section includes the electrical wiring schematic for the DM-4 Power Pack.

Carrier Transicold Division, Carrier Corporation, P.O. Box 4805, Syracuse, N.Y. 13221SERVICE MANUALOPERATION ANDBUS AIR CONDITIONING UNITDM-4POWER PAC

5-2Figure 5-1. Electrical Wiring Schematic Diagram --- DM-4 Power PackDwg. No. 061-287 Rev C

iTABLE OF CONTENTSSection Page1 DESCRIPTION 1-1...1.1 Introduction 1-1...

iiTA BLE OF CONTENTS (CONTINUED)Section Page5ELECTRICAL5.1 Introduction 5-1...LIST OF ILLUSTR

1-1SECTION 1DESCRIPTION1.1 INTRODUCTIONThismanualcontainsOperatingData,ElectricalDataand Service instructions for the DM-4 Power Pack.WARNINGBeware of

1-21. Radiator Cap2. Compressor --- 05K3. Alternator4. Glow Plug Control5. Power Relay (PR)6. Mechanical Fuel Pump7. Oil Pressure Switch (OP)8. Air Cl

1-3123451. Engine Block2. Oil Pan3. Full Flow Oil Filter4. Engine Oil Connection5. Oil Pressure SwitchFigure 1-3. Lube Oil Flow Diagram1.5 SAFETY DEVI

1-41.8 COMPRESSOR UNLOADERa. Unloaded Operation (Refer to Figure 1-5)Pressure from the discharge manifold (15) passesthroughthestrainer(9)andbleedorif

1-52. Rear Starter Switch (RSS)This switch is active only when the (RCS) switch is inthe REAR position. Depressing this switch energizes thestarter ci