Multiquip MLT25 Lamp Troubleshooting Guide, Connections, Ballast Removal, Starting

Page 44

TROUBLESHOOTING

Lamp Troubleshooting Guide

Use the following procedure and wiring diagrams on the next pages to determine which of the four lamps is not functioning:

Connections

1.Make sure that lamp #1 power cable is plugged into the J1 connector on the T-Bar assembly.

2.Make sure that lamp #2 power cable is plugged into the J2 connector on the T-Bar assembly.

3.Make sure that lamp #3 power cable is plugged into the J3 connector on the T-Bar assembly.

8.Connect the positive lead of the voltmeter to the output side of the circuit breaker where the lamp was originally OFF and observe that 120 VAC is present. Make sure circuit breaker is ON.

9.If no output voltage is present, the circuit breaker is defective and needs to be replaced.

10.If the correct output voltage is present then it can be assumed that the generator is working correctly and the correct voltage (120 VAC) is being supplied to the ballast.Then it can be assumed that the ballast for that lamp is defective. Replace ballast.

Ballast Removal

4.Make sure that lamp #4 power cable is plugged into the J4 connector on the T-Bar assembly.

5.Make sure that lamp #5 power cable is plugged into the J5 connector on the T-Bar assembly.

6.Make sure that lamp #6 power cable is plugged into the J6 connector on the T-Bar assembly.

Starting

1.Start the generator and verify that there are no abnormal sounds.

2.Turn CB1 thru CB3 circuit breakers, depending on what voltage is selected, (see Table 3) to the ON position.

3.Wait a few minutes and determine which lamp is not igniting.

4.If one of the lamps is OFF, disconnect its power cable and plug it into a receptacle that is known to be working. DO NOT unplug a power cable from the T-Bar while power is being supplied by the generator. Always turn the circuit breaker OFF before unplugging a power cable.

5.If the lamp still does not ignite after plugging it into a working receptacle (120 VAC present), then the lamp is defective and has to be replaced.

6.If the lamp ignites after plugging it into a working receptacle, continue with step 7.

7.With the voltmeter set to the AC position, connect the negative lead of the AC voltmeter to any (neutral) white wire on the junction terminal block.This block connects all the neutral wires (white) in the system.

1.Remove the power cable from the generator, and make sure that no voltage is being supplied to the ballast compartment.

2.Remove the four screws securing the ballast cover, and remove cover.

3.Make sure to discharge the ballast capacitor.

4.Remove the defective ballast, taking care to guard against electrical shock when coming in contact with the ballast and capacitor. The capacitor is known to store an electrical charge, that when discharged could result in a harmful shock. Make sure to discharge capacitor.

page 44 — MLT25 sERIES LIGHT TOWER • operation manual — rev. #0 (11/28/12)

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Contents Model MLT25 sERIES Proposition 65 warning Reporting Safety Defects NhtsaTable of Contents Specifications are subject to change without noticeSafety Information SaFeTY MessagesSaFeTY sYMBOLs Addresses practices not related to personal injuryGeneRaL saFeTY LIgHT TOWeR saFeTY LaMp saFeTYTOWIng saFeTY TRanspORTIng saFeTY Loading and Tie-Down on Flatbed TruckELeCTRICaL saFeTY „ neveR operate light towerMLT25 Series Specifications Light Tower SpecificationsTrailer Specifications Generator/Engine SpecificationsDimensions DimensionsReference Letter Description Dimension Length Mast Stowed Position Length Mast Deployed PositionGeneral information Metal Halide LampsComponents Major Components Control Panel SideCircuit Breakers, 3-Pole, 15 a Turn the lamps on and off Major Components Front/RearRead all safety instructions at the beginning of manual InspectionBefore starting Check all fastening nuts and bolts for tightnessContact between the two connectors Female and Male ConnectorOperation Starting the EngineMast operation Outriggers and Support StandsRaising the Mast Raising the Mast Lowering the MastStowing the Mast to Horizontal Position Rotating the MastMove the Voltage Selector to the desired position Voltage Selector PositionsMaintenance Generator/ENGINE MaintenanceCheck Cable Wear Servicing the Mast Raise/Lower Cable SystemServicing the Mast Extension Cable System Lower the mast to the horizontal resting positionMaintenance Trailers Manually Adjusting the BrakesTrailer Brakes Hydraulic BrakesAdjustable Channel Hydraulic Brake TroubleshootingWheel Hub Adjustment Leaf SuspensionTRaILeR TOWIng guIDeLInes Safety guidelines TrailersCOMMOn Causes for LOss of TRaILeR DRIvIng COnDITIOns COupLIng to THe TOW veHICLeTRaILeR vIn Tag InOpeRaBLe BRaKes, LIgHTs or MIRRORsTRaILeR TOWIng TIps ELeCTRICaL COnneCTOR TOW veHICLeSuspensIOn sYsTeM BRaKe COnTROLLeRSaFeTY CHaIns TRaILeR LIgHTIng anD BRaKIng COnneCTORBReaKaWaY sYsTeM JaCKsTanDCoupling the Trailer to the Tow vehicle Ball Coupler Lock washer and hitch frameTrailer tongue. Wood or concrete blocks may also be used Breakaway Cable surge Brake system Attaching safety ChainBreakaway Brake system Connecting Trailer Lights Uncoupling the Ball HitchPInTLe Hitch COupLeR Pintle Coupler and pintle HookFigure H. Attaching Safety Chain Pintle Hitch Coupling Trailer to Tow vehicle pintle CouplerBe sure lug nuts are tight before each tow TIRe saFeTY Unsafe Tires, Lug nuts or WheelsDetermining Load Limit of Trailer Step Determining Load Limit of Tow vehicle stepLetter Rating Speed Rating TIRe FunDaMenTaLsTable a. speed Rating Tire safety Tips Tire RepairReplacing Worn or Damaged Tires Uniform Tire Quality grading standards uTQgsTable B. Tire Wear Troubleshooting Wheel RimsWheels, Bearings and Lug nuts Lug nut Torque RequirementsLights and signals Table C. Tire Torque RequirementsLamp Troubleshooting Symptom Possible Cause SolutionWhen switch is first Checking voltage and ballast Turned on Replacement minimizes color differencesClean fixture Lamp starts slowly ARC does not strike Defective Lamp?Lamp Troubleshooting Guide ConnectionsBallast Removal StartingElectronic components locator Wiring diagram sheet L3 NEU. GNDTB1 E1 AWG Page HERE’S HOW to GET Help
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