Multiquip manual DCA-125SSJU Series -TROUBLESHOOTING Engine

Page 59

DCA-125SSJU SERIES —TROUBLESHOOTING (ENGINE)

TABLE 19. ENGINE TROUBLESHOOTING (CONTINUED)

SYMPTOM

POSSIBLE PROBLEM

SOLUTION

 

 

 

 

Fuel filter clogged or dirty?

Clean or change.

 

 

 

 

Air cleaner clogged?

Clean or change.

 

 

 

 

Fuel leak due to loose injection

Tighten nut.

 

pipe retaining nut?

 

 

 

 

 

 

Injection pump malfunctioning?

Repair or replace.

Engine revolution is not smooth.

 

 

Incorrect nozzle opening

Adjust.

 

 

pressure?

 

 

 

 

 

 

Injection nozzle stuck or

Repair or replace.

 

clogged?

 

 

 

 

 

 

Fuel over flow pipe clogged?

Clean.

 

 

 

 

Governor malfunctioning?

Repair.

 

 

 

 

Excessive engine oil?

Reduce to the specified level.

 

 

 

 

Piston ring and liner worn or

Repair or replace.

Either white or blue exhaust gas

stuck?

 

is observed.

 

 

Incorrect injection timing?

Adjust.

 

 

 

 

 

Deficient compression?

Adjust top clearance.

 

 

 

 

Overload?

Lessen the load.

 

 

 

 

Low grade fuel used?

Use the specified fuel.

Either black or dark gray

 

 

Fuel filter clogged?

Clean or change.

exhaust gas is observed.

 

 

 

Air cleaner clogged?

Clean or change.

 

 

 

 

Deficient nozzle injection?

Repair or replace the nozzle.

 

 

 

 

Incorrect injection timing?

Adjust.

 

 

 

 

Engine's moving parts seem to

Repair or replace.

 

be seizing?

 

 

 

 

 

Deficient output.

Uneven fuel injection?

Repair or replace the injection pump.

 

 

 

 

Deficient nozzle injection?

Repair or replace the nozzle.

 

 

 

 

Compression leak?

Replace head gasket, tighten cylinder head bolt, glow plug and

 

nozzle holder.

 

 

 

 

 

DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 59

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Contents MQ Power DCA-125SSJU DCA-125SSJU2 Portable Generator Page Heres HOW to GET Help Table of Contents When ordering parts Please supply the following information Parts Ordering ProceduresDCA-125SSJU Series Specifications Dimensions DCA-125SSJU Series DimensionsForyour Safety and the Safety of Others DCA-125SSJU Series Safety Message Alert SymbolsOver Speed Conditions Sight and Hearing hazard DCA-125SSJU Series Safety Message Alert SymbolsDCA-125SSJU Series Rules for Safe Operation General SafetyRadiator DCA-125SSJU Series Rules for Safe OperationTransporting BatteryEmergencies Towing Safety PrecautionsDCA-125SSJU Series Installation Mounting DCA-125SSJU Series InstallationOutdoor Installation Indoor InstallationGenerator with Trailer DCA-125SSJU Series Towing Saftey PrecautionsCoupler Type of hitch used on the trailer for towing DCA-125SSJU Series -TRAILER SpecificationsExplanation of Chart Trailer Specifications DCA-125SSJU Series -TRAILER SpecificationsSpecifications DCA-125SSJU Series Generator Decals DCA-125SSJU Series Generator Decals DCA-125SSJU Series General Information Generator Major Components DCA-125SSJU Series Major ComponentsAmp breaker DCA-125SSJU Series Generator Control PanelRelay monitors the current Terminals to the loadFuel Gauge Indicates amount of diesel fuel available DCA-125SSJU Series Engine Operating PanelEngine Operating Panel From S/N DCA-125SSJU Series Engine Operating PanelDCA-125SSJU Series Engine Operating Panel Output Terminal Panel DCA-125SSJU Series Output Terminal Panel FamiliarizationOutput Terminal Familiarization Removing the Plastic Face Plate Uvwo Terminals 120VAC Gfci ReceptaclesMaximum Output Connecting LoadsOver Current Relay DCA-125SSJU Series Load Application Single Phase LoadThree Phase Load Generator OutputVoltages Voltage Selector SwitchVoltage Selector Switch Locking Button DCA-125SSJU Series Generator OutputsGfci Receptacle Load Capability How to Read the OutputTerminal GaugeDCA-125SSJU Series Generator OUTPUTS/GAUGE Reading 3Ø 208V/1Ø120V Uvwo Terminal Output Voltages DCA-125SSJU Series Outputterminal Panel ConnectionsUvwo Terminal Output Voltages 3Ø 240/139 Uvwo Terminal Output Voltages1Ø 240V/120V Uvwo Terminal Output Voltages 3Ø 480/277 Uvwo Terminal Output VoltagesRefilling the Fuel System DCA-125SSJU Series PRE-SETUPCircuit Breakers Lubrication OilRefueling DCA-125SSJU Series PRE-SETUPRefueling Procedure Full Trailer Tank Must be less than 50% Cleaning the RadiatorAir Cleaner Fan Belt Tension Mm when depressed with the thumb as shown belowAlternator Battery Cable InstallationWhen connecting battery do the following WiringClose all engine enclosure doors Figure Away from nearby personnelBefore Starting Engine Operating Panel up to S/N DCA-125SSJU Series Generator START-UP Procedure ManualCoolant Temperature Gauge On closed position Set engine speed switch to LOW FigureEngine Operating Panel S/N 7500508~ Place the Off/Manual/Auto switch in the Auto position DCA-125SSJU Series Generator START-UP Procedure Auto ModeEmergency Shutdown Procedure Ignition Switch Up to S/N DCA-125SSJU Series Generator SHUT-DOWN ProcedureShutdown Procedure Ignition Switch Up to S/N Shutdown Procedure Engine Controller S/N 7500508~DCA-125SSJU Series Maintenance Check Oil Level Cleaning the Fuel StrainerFeed Pump Strainer Cleaning Air RemovalBattery Charger Jacket Water Heater Power Connections DCA-125SSJU Series MaintenanceHydraulic Surge Brakes DCA-125SSJU Series -TRAILER Brakes MaintenanceBrake Adjustment BrakesSuspension DCA-125SSJU Series -TRAILER MaintenanceTires/Wheels/Lug Nuts Tire Wear/InflationStart all wheel lug nuts by hand DCA-125SSJU Series -TRAILER MaintenanceLug Nut Torque Requirements Trailer/Towing Vehicle Wiring Diagram DCA-125SSJU Series -TRAILERWIRING DiagramGenerator Wiring Diagram DCA-125SSJU Series Generatorwiring DiagramEngine Wiring DiagramIgnition Switch DCA-125SSJU Series Enginewiring Diagram Ignition SwitchEngine Wiring Diagram Engine Controller DCA-125SSJUSERIES-ENGINEWIRINGDIAGRAMENGINECONTROLLERPage Starter does not run DCA-125SSJU Series -TROUBLESHOOTING EngineEngine does not start DCA-125SSJU Series -TROUBLESHOOTING Engine Generator Troubleshooting DCA-125SSJU Series Troubleshooting GeneratorEngine Controller Troubleshooting DCA-125SSJU Series Troubleshooting MpecItems Found In the Items Number Column Explanation of Code in Remarks ColumnQty Description Remarks DCA-125SSJU Series Suggested Spare PartsNameplate and Decals DCA-125SSJU Series Nameplate and DecalsMachine Screw STRIPE, MQ PowerSTRIPE, Whisperwatt StripeGenerator Assy DCA-125SSJU Series Generator AssyCoupling Disk Balancing Weight KITRotor Assy Field Assy FANGenerator ASSY. DCA-125SSJU Series Generator ASSY.HEX. NUT Coupling RingRubber Suspension Control BOX Assy DCA-125SSJU Series Control BOX AssySpacer Switch BracketSwitch Board NTA5A2DBControl BOX ASSY. DCA-125SSJU Series Control BOX ASSY.Knob Wire HARNESS, GeneratorSL2AS SL2VSEngine and Radiator Assy DCA-125SSJU Series Engine and Radiator AssyHEX. Head Bolt Engine and Radiator ASSY. DCA-125SSJU Series Engine and Radiator ASSY. N7500001 to S/N 7500508~ DCA-125SSJU Series Engine Operating Panel AssyEngine Operating Panel Assy ECU9988NJD Output Terminal Assy DCA-125SSJU Series Outputterminal AssyPlain Washer Terminal PanelOutput Terminal Bolt TIE BoltBattery Assy DCA-125SSJU Series Battery AssyBattery Cable Battery SheetBattery Band Battery Bolt SETMuffler Assy DCA-125SSJU Series Muffler AssyCover Exhaust PipeClamp GasketFuel Tank Assy DCA-125SSJU Series Fueltank AssyRubber Sheet Fuel TankCAP, Fuel Tank Tank BandEnclosure Assy DCA-125SSJU Series Enclosure AssyCenter Frame Under CoverCOVER, Front Frame Acoustic SheetEnclosure ASSY. DCA-125SSJU Series Enclosure ASSY.Side Door Roof PanelOver COVER, Front Frame Chain AssyRubber Seal Assy DCA-125SSJU Series Rubber Seal AssyRubber Seal Effective October 1, 2002 Terms and Conditions of Sale Parts Page Heres HOW to GET Help

DCA-125SSJU specifications

The Multiquip DCA-125SSJU is a robust and reliable diesel generator that stands out in the construction and rental markets. Designed to provide consistent power, this generator is ideal for various applications ranging from industrial construction sites to outdoor events. The DCA-125SSJU boasts a powerful 125 kVA output, making it suitable for both small and large power needs.

One of the prominent features of the DCA-125SSJU is its advanced engine technology. It is powered by a reliable and fuel-efficient Yanmar diesel engine. This engine not only ensures longevity but also optimizes fuel consumption, allowing operators to save on running costs without compromising performance. With a robust design, the Yanmar engine guarantees excellent cold start capability, making it dependable even under challenging weather conditions.

The generator's sound attenuation is also noteworthy. Encased in a sound-attenuated enclosure, the DCA-125SSJU operates at a noise level that makes it suitable for use in residential areas or environments with strict noise regulations. This feature enhances the generator's versatility, as it can be employed in various settings without disturbing nearby activities.

Multiquip has incorporated several safety features into the DCA-125SSJU, including automatic shutdown systems that activate in the event of low oil pressure or overheating. This proactive approach helps safeguard the engine and prolongs its lifespan. Additionally, the generator is equipped with a heavy-duty, weatherproof frame, ensuring durability and protection against the elements.

User-friendly control features make the DCA-125SSJU easy to operate. The generator includes an intuitive digital control panel that provides essential information such as voltage output, frequency, and run time. This accessibility allows operators to monitor performance and adjust settings as necessary.

Portability is another significant advantage of the DCA-125SSJU. With easily transportable dimensions, it can be efficiently moved to various job sites. Its sturdy wheels and lifting points further enhance mobility, making it a practical solution for temporary power needs.

In summary, the Multiquip DCA-125SSJU is a high-performance diesel generator, combining power, efficiency, and portability with advanced technology and user-friendly features. Its reliability and versatility make it an excellent choice for contractors, event organizers, and anyone in need of dependable power supply. Whether facing the demands of a construction site or hosting an outdoor function, the DCA-125SSJU ensures you’ll never be left in the dark.