Multiquip dca25USI2 manual Troubleshooting Generator

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Troubleshooting (Generator)

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 17 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our company’s business office or service plant.

Table 19. Generator Troubleshooting

	Symptom	Possible Problem	Solution
		AC Voltmeter defective?	Check output voltage using a voltmeter.
		Is wiring connection loose?	Check wiring and repair.
	No Voltage Output	Is AVR defective?	Replace if necessary.
		Defective Rotating Rectifier?	Check and replace.
		Defective Exciter Field?	Check for approximately 17.3 ohms across J & K on CN1
		Is engine speed correct?	Turn engine throttle lever to “High”.
	Low Voltage Output	Is wiring connections loose?	Check wiring and repair.
		Defective AVR?	Replace if necessary.
	High Voltage Output	Is wiring connections loose?	Check wiring and repair.
	High Voltage Output	Defective AVR?	Replace if necessary.
		Defective AVR?	Replace if necessary.
		Short Circuit in load?	Check load and repair.
	Circuit Breaker Tripped	Over current?	Confirm load requirements and reduce.
	Circuit Breaker Tripped	Defective circuit breaker?	Check and replace.
		Defective circuit breaker?	Check and replace.
		Over current Relay actuated?	Confirm load requirement and replace.

DCA25usi2 60 hz Generator • operation and parts manual — rev. #0 (02/04/14) — page 45

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Contents Model dca25USI2 Proposition 65 warning Administrator Reporting Safety DefectsDCA25USI2 60 Hz Generator Table of ContentsChoose from three easy options SaFetY messages Safety InformationGenerator Safety General saFetYIf operating in speed ranges above the maximum allowable Restricted. If the air fl ow isFUel saFetY „ never use fuel as a cleaning agentFrom fuel vapors or if fuel is spilled on a hot engine Power Cord/Cable safety EleCtriCal saFetYGrounding Safety BatterY saFetYEmissions inFormation Environmental saFetY/DeCommissioningEmission Control label Label must remain with the engine for its entire lifeDCA25USI2 SpecificationsDimensions DimensionsTypical Generator Grounding Application InstallationIndoor Installation Outdoor InstallationMounting Generator GroundingGeneral Information Item no Major ComponentsGenerator Control Panel Generator Control PanelFuel Gauge Indicates amount of diesel fuel available Engine Operating PanelOutput Terminal Familiarization Output Terminal Panel FamiliarizationTerminal legs O and Ground are considered bonded grounds Output Terminal Panel is provided with the followingVAC Gfci Receptacles Removing the Plastic Face Plate Hard Wire Hookup PanelOver Current Relay Connecting LoadsSingle Phase Load Three Phase LoadLoad Application Generator Outputs Generator OUTPUTS/gauge reading How to Read the ac ammeter and ac voltage gaugesAC Voltmeter Gauge Reading AC Ammeter Gauge ReadingUvwo Terminal Output Voltages Output Terminal Panel Connections3Ø-240/139 Uvwo Terminal Output Voltages 3Ø-208V/1Ø-120V Uvwo Terminal Output Voltages1Ø-240/120V Uvwo Terminal Output Voltages 3Ø-480/277V Uvwo Terminal Output VoltagesCircuit Breakers Inspection/SETUPLubrication Oil Fuel CheckOnly use #2 diesel fuel when refueling Refueling ProcedureAir Cleaner Fan Belt Tension Cleaning the RadiatorCoolant Antifreeze/Summer Coolant/ Water Operation in Freezing WeatherBattery Cable Installation BatteryWiring AlternatorBefore Starting Generator START-UP ProcedureStarting Engine’s exhaust contains harmful emissionsCoolant Temperature Gauge Normal Shutdown Procedure Generator SHUT-DOWN ProceduresEmergency Shutdown Procedure Never stop the engine suddenly except in an emergencyMaintenance General Inspection Air CleanerAir Cleaner with Dust Indicator Fuel Addition Cleaning Inside the Fuel TankRemoving Water from the Fuel Tank Fuel Tank InspectionCheck Oil Level Radiator CleaningReplacing Oil Filter Flushing Out Radiator and Replacing CoolantTrailer Maintenance Trailer MaintenanceCoupler Type of hitch used on the trailer for towing Brakes Brake AdjustmentHydraulic Surge Brakes ActuatorTires/Wheels/Lug Nuts Tire Wear/InflationSuspension Never use an pneumatic air gun to tighten wheel lug nuts Lug Nut Torque Requirements Trailer/Towing Vehicle Wiring Diagram Trailer Wiring DiagramGenerator Wiring Diagram Generator Wiring DiagramEngine Wiring Diagram Engine Wiring DiagramTroubleshooting Generator Explanation of Code in Remarks Column To 3 units Suggested Spare PartsGenerator Assy 7961025004 B11102006020601822630 8001070003Control box Assy M1213001012 M12130010020601808820 0601807520Control box Assy M1223000613 M12230006030601807641 0601808985 AC Meter ~50A/100A5A1 0601801040Engine and Radiator Assy 8972309390 M19232001242944566410 M1305200304Engine and Radiator Assy 0603300286 06033002850605511395 060551139912A 11B 11A 13B 13C 13A 24A 25A Output Terminal AssyM9220000004 M1230700003M9220000104 0039308000Battery Assy M9310500014 0602220185M9103000304 0602220920Muffler Assy M1333200304 M1330000512M1333300204 M1333003013Fuel Tank Assy 0605505070 M13650003020605501071 060551609072A 54A 56A 59A 56B 58A 52A Enclosure AssyM1419300504 M1413003402M1415100202 0603306797Enclosure Assy M1443302203 020700600034A M1493305104 M1443400103Enclosure Assy M1453004903 52A M149341010453A M1493409904 53B M1495501004Rubber Seals Assy REMArks Nameplate and Decals Assy M11030090 M1510300902M1510301002 M11030100Freight Policy Terms and Conditions of Sale PartsPage HERE’S HOW to GET Help