Multiquip DCA-25USIXF/DCA-25USI2XF-TROUBLESHOOTING Generator, Generator Troubleshooting

Page 49

DCA-25USIXF/DCA-25USI2XF—TROUBLESHOOTING (GENERATOR)

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 20 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our company's business office or service plant.

TABLE 20. GENERATOR TROUBLESHOOTING

SYMPTOM

POSSIBLE PROBLEM

SOLUTION

 

 

 

No Voltage Output

AC Voltmeter defective?

Check output voltage using a voltmeter.

 

 

 

 

Is wiring connection loose?

Check wiring and repair.

 

 

 

 

Is AVR defective?

Replace if necessary.

 

 

 

 

Defective Rotating Rectifier?

Check and replace.

 

 

 

 

Defective Exciter Field?

Check for 17.3 ohms across J & K on CN1

 

 

 

Low Voltage Output

Is engine speed correct?

Turn engine throttle lever to "High".

 

 

 

 

Is wiring connections loose?

Check wiring and repair.

 

 

 

 

Defective AVR?

Replace if necessary.

 

 

 

High Voltage Output

Is wiring connections loose?

Check wiring and repair.

 

 

 

 

Defective AVR?

Replace if necessary.

 

 

 

Circuit Breaker Tripped

Short Circuit in load?

Check load and repair.

 

 

 

 

Over current?

Confirm load requirements and reduce.

 

 

 

 

Defective circuit breaker?

Check and replace.

 

 

 

 

Over current Relay actuated?

Confirm load requirement and replace.

 

 

 

DCA-25USIXF/DCA-25USI2XF — OPERATION AND PARTS MANUAL — REV. #1 (05/08/09) — PAGE 49

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Contents Model DCA-25USIXF Model DCA-25USI2XF DCA-25USIXF/DCA-25USI2XF- Proposition 65WARNING Diesel engine exhaust and someDCA-25USIXF/DCA-25USI2XF-TABLE of Contents Ordering parts has never been easier DCA-25USIXF/DCA-25USI2XF- Parts Ordering ProceduresGenerator Specifications DCA-25USIXF/DCA-25USI2XF- SpecificationsDimensions DCA-25USIXF/DCA-25USI2XF- Dimensions TOP, Side and FrontHazard Symbols DCA-25USIXF/DCA-25USI2XF- Safety Message Alert SymbolsDCA-25USIXF/DCA-25USI2XF- Safety Message Alert Symbols DCA-25USIXF/DCA-25USI2XF- Rules for Safe Operation General SafetyInjury People Carbon monoxide gasDCA-25USIXF/DCA-25USI2XF- Rules for Safe Operation Maintenance SafetyUse well insulated gloves when picking up the battery Battery SafetyDeath Guidelines section in this manual Towing and Transporting SafetyGenerator Decals DCA-25USIXF/DCA-25USI2XF- DecalsDCA-25USIXF/DCA-25USI2XF- Decals Typical Generator Grounding Application DCA-25USIXF/DCA-25USI2XF- InstallationIndoor Installation Outdoor InstallationWhen connecting the generator Mounting Two auxilliary circuit breakers, 250V @50 amps DCA-25USIXF/DCA-25USI2XF- General InformationMajor Components DCA-25USIXF/DCA-25USI2XF- Major ComponentsGenerator Control Panel DCA-25USIXF/DCA-25USI2XF- Generator Control PanelEngine Operating Panel DCA-25USIXF/DCA-25USI2XF- Engine Operating PanelOutput Terminal Panel DCA-25USIXF/DCA-25USI2XF- Output Terminal PanelOutput Terminal Familiarization 120VAC Gfci Receptacles DCA-25USIXF/DCA-25USI2XF- Output Terminal PanelOver Current Relay Connecting LoadsThree Phase Load Single Phase LoadDCA-25USIXF/DCA-25USI2XF- Load APPLICATION/MAXIMUM Motors and motor-drivenDCA-25USI Gauge READING/TERMINAL Panel Connections Voltage Selector SwitchGenerator OutputVoltages Maximum AmpsChange-Over Switch Voltage selector switchDCA-25USI Gauge READING/TERMINAL Panel Connections Reading VoltageUvwo Terminal Output Voltages Three-Phase Position3Ø 240/139 Output Terminal Lug Voltages 3Ø 208V/1Ø120V Output Terminal Lug Voltages1Ø 240V/120V Output Terminal Lug Voltages 3Ø 480/277 Output Terminal Lug VoltagesCircuit Breakers DCA-25USIXF/DCA-25USI2XF- SetupLubrication Oil Fuel CheckRefueling Procedure DCA-25USIXF/DCA-25USI2XF- SetupRefueling Air Cleaner Fan Belt Tension Cleaning the RadiatorOperation FreezingWeather Must be less than 50%Battery Cable Installation BatteryWiring AlternatorBefore Starting DCA-25USIXF/DCA-25USI2XF- Generator START-UP ProcedureEngines exhaust contains harmful emissions Direct exhaust away from nearby personnelIgnition Switch Start Position Oil Pressure Gauge Normal Shut-down Procedure DCA-25USIXF/DCA-25USI2XF- Generator SHUT-DOWN ProcedureEmergency Shut-down Procedure Automatic Shut-down SystemDCA-25USIXF/DCA-25USI2XF- Maintenance DCA-25USIXF/DCA-25USI2XF- Maintenance Brake Adjustment DCA-25USIXF/DCA-25USI2XF-TRAILER MaintenanceBrakes Check the wheel and drum for free rotationTires/Wheels/Lug Nuts DCA-25USIXF/DCA-25USI2XF-TRAILER MaintenanceTireWear/Inflation SuspensionLug Nut Torque Requirements DCA-25USIXF/DCA-25USI2XF-TRAILER MaintenanceStart all wheel lug nuts by hand Trailer/Towing Vehicle Wiring Diagram DCA-25USIXF/DCA-25USI2XF-TRAILERWIRING DiagramEngine Wiring Diagram DCA-25USIXF/DCA-25USI2XF- Enginewiring DiagramDCA-25USIXF/DCA-25USI2XF- Enginewiring Diagram Generator Wiring Diagram DCA-25USIXF/DCA-25USI2XF- Generatorwiring DiagramEngine does not start DCA-25USIXF/DCA-25USI2XF-TROUBLESHOOTING EngineStarter does not run DCA-25USIXF/DCA-25USI2XF-TROUBLESHOOTING Engine Generator Troubleshooting DCA-25USIXF/DCA-25USI2XF-TROUBLESHOOTING GeneratorDCA-25USIXF/DCA-25USI2XF- Explanation of Code in Remarks Sample Parts ListQty Description DCA-25USIXF/DCA-25USI2XF- Suggested Spare PartsDCA-25USIXF/DCA-25USI2XF- Generator Assy DCA-25USIXF/DCA-25USI2XF- Generator Assy DCA-25USIXF- Control BOX Assy DCA-25USIXF- Control BOX Assy DCA-25USIXF- Control BOX Assy DCA-25USIXF- Control BOX Assy DCA-25USI2XF- Control BOX Assy DCA-25USI2XF- Control BOX Assy DCA-25USI2XF- Control BOX Assy DCA-25USI2XF- Control BOX Assy DCA-25USIXF- Engine ANDvRADIATOR Assy DCA-25USIXF- Engine and Radiator Assy DCA-25USIXF- Engine and Radiator Assy M9200200004 M96020000030150000018 0199901600DCA-25USI2XF- Engine and Radiator Assy 8944567412 M1923200124M9200100904 0150000016DCA-25USI2XF- Engine and Radiator Assy M1316100603 Output Terminal Assy DCA-25USIXF/DCA-25USI2XF- Outputterminal AssyM9220000004 M1230700003M9220000104 0039308000DCA-25USIXF/DCA-25USI2XF- Battery Assy M9310500014 0602220185M9103000304 0602220920DCA-25USIXF- Muffler Assy DCA-25USIXF Muffler Assy DCA-25USI2XF- Muffler Assy M1333200304 M1332000512M1333300204 M1333003013DCA-25USIXF/DCA-25USI2XF- Fueltank Assy 0605505072 M13630013020605501098 0605516090DCA-25USIXF- Enclosure Assy M1493000004 M1413002502M1413100003 0603306797 PLUG, 1-1/2 0016910030DCA-25USIXF- Enclosure Assy 27A M1495300504 M144530010327B M1495300604 M1445400103DCA-25USIXF- Enclosure Assy 52A 0030006000 51A C9312500004M9112100504 M1435000903DCA-25USI2XF- Enclosure Assy M1493000704 M1413003902M1413600004 M1423002402DCA-25USI2XF- Enclosure Assy 34A M1493305104 M1443302203M1443400103 35A M1493305204DCA-25USI2XF- Enclosure Assy 59A 0030006000 58A C9312500004M1433300003 M1433001103DCA-25USIXF/DCA-25USI2XF- Rubber Seals Assy 0314500560 02292007900229200630 0228901220DCA-25USIXF/DCA-25USI2XF- Nameplate and Decals Assy DCA-25USIXF/DCA-25USI2XF- Nameplate and Decals Assy Freightpolicy Terms and Conditions of Sale PartsPage Fax 972 Tel