Multiquip LT12D, LT12P operation manual Generator Troubleshooting, Symptom Solution

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TROUBLESHOOTING

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take remedial action following the diagnosis based on the troubleshooting tables. If the problem cannot be remedied, please leave the unit as is and consult Multiquip's technical support department or your local dealer.

Table 9. Generator Troubleshooting

Symptom

-

Solution

No Voltage Output

Is wiring connection loose?

Check wiring and repair.

Defective Rectifier?

Check and replace.

 

Low Voltage Output

Is engine speed correct?

Turn engine throttle lever to “High”.

Is wiring connection loose?

Check wiring and repair.

 

High Voltage Output

Are wiring connections loose?

Check wiring and repair.

 

Short Circuit in load?

Check load and repair.

Circuit Breaker Tripped

Over current?

Confirm load requirements and reduce.

 

Defective circuit breaker?

Check and replace.

 

Dead battery?

Replace battery.

Engine fails to start and

Defective ignition switch?

Replace ignition switch.

starter does not rotate

Defective starter?

Replace starter

 

Burned fuse?

Replace fuse.

Engine fails to start and

Broken preheat circuit?

Check preheat circuit.

No fuel?

Add diesel fuel.

start rotates

Defective wiring?

Check wiring.

 

PAGE 38 — LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #12 (01/20/09)

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Contents Models LT12D, LT12P This Manual Must Accompany the Equipment AT ALL TimesProposition 65 Warning Reporting Safety Defects NhtsaTable of Contents Specifications are subject to change without noticeSafety Information Safety Messagesfire extinguisher General SafetyLight Tower Safety first aid kitLamp Safety Engine Safety Before servicing equipmentFuel Safety Towing SafetyTransporting Safety Loading and Tie-Down on Flatbed TruckGrounding Safety Electrical SafetyPower Cord/Cable Safety Battery Safety Environmental SafetyLamp Footcandle Plot Lamp Footcandle PlotTrailer Specifications SpecificationsGenerator Specifications Engine Specifications Reference Letter Description Dimension DimensionsDimensions Length Mast Stowed Position Length Mast Deployed PositionGeneral Information Components Major Components Control Panel SideRear Control Panel Light CONTROL/BREAKERControl Panel Before Starting Indoor InstallationInspection Engine OIL CheckWipe up any spilled fuel immediately Battery CheckFuel Check Coolant Cleaning the RadiatorAIR Cleaner FAN Belt Tension Operation in Freezing WeatherLocation of Female Connectors Starting the Engine Perkins OperationStarting the Engine Starting the Engine Lombardini/Deutz EnginesDeploying the Mast to Vertical Position Mast OperationOutriggers and Support Stands Raising the MastMast Operation Turning on the Lamps Lowering the MastStowing the Mast to Horizontal Position Rotating the MastNormal Shutdown Testing the 120 VAC Gfci ReceptacleApplying AN External Load Emergency ShutdownInspection/Maintenance MaintenanceBasic Inspection and Maintenance FrequencyGeneral Inspection Flushing OUT Radiator and Changing CoolantChanging OIL Check Cable WearReplacing Fuel Filter Servicingthe Mast RAISE/LOWER Cable SystemLower the mast to the horizontal resting position StorageRemoval from Long Term Storage Wheel HUB Adjustment Maintenance TrailersAdjustable Channel Leaf Suspension Leaf Suspension ComponentsSymptom Solution TroubleshootingGenerator Troubleshooting Engine Troubleshooting Symptom Possible Cause SolutionEngine revolution is not Lamp Troubleshooting Clean fixture When switch is first Checking voltage and ballast Turned onReplacement minimizes color differences Lamp starts slowly ARC does not strike Defective Lamp?Starting Lamp Troubleshooting GuideConnections Ballast RemovalLT12 Wiring Diagram S/N 902148 and below StatorBLK GRN WHT RED LT12 Wiring Diagram S/N 902149 to LT12 Wiring Diagram S/N 902149 to LT12 Wiring Diagram S/N 902626 and Above BLK BRN Blue RED WHT YEL GRN Perkins Engine Wiring Diagram Deutz Engine Wiring Diagram LT12 Control PANEL/IGNITION Wiring Diagram DEUTZ/LOMBARDINI SpecificTrailer Towing Guidelines Trailer GuidelinesCommon Causes for Loss of Trailer Driving Conditions Coupling to the TOW VehicleTrailer VIN TAG Inoperable BRAKES, Lights or MirrorsTrailer Towing Tips Suspension System Electrical ConnectorTOW Vehicle Side View MirrorsCoupler Types Safety ChainsJackstand Ball Hitch CouplerLock washer and hitch frame Coupling theTrailer to theTow Vehicle Ball CouplerUncoupling the Ball Hitch Attaching Safety ChainConnecting Trailer Lights Pintle Hitch Coupler Pintle Coupler and Pintle HookCoupling Trailer to Tow Vehicle Pintle Coupler Tire SafetyUnsafe Tires, Lug Nuts or Wheels Tighten lug nuts before each tow Determining Load Limit of TrailerStep Be sure lug nuts are tight before each towP indicates the tire is for passenger vehicles Determining Load Limit of Tow Vehicle StepTire Fundamentals Letter Rating Speed Rating Uniform Tire Quality Grading Standards UtqgsTable A. Speed Rating Tire Repair Tire Safety TipsTable B. Tire Wear Troubleshooting Replacing Worn or Damaged TiresWheels, Bearings and Lug Nuts Lights and SignalsWheel Rims Lug Nut Torque RequirementsFigure L. Trailer to Tow Vehicle Wiring Diagram HERE’S HOW to GET Help
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