Multiquip MLT25 Lamp starts slowly ARC does not strike Defective Lamp?, Lamp start-up, Supply?

Page 43

 

 

TROUBLESHOOTING

 

 

 

 

 

 

 

Table 5. Lamp Troubleshooting (continued)

 

 

 

Symptom

Possible Cause

Solution

 

 

 

Lamp starts slowly

 

 

(ARC does not strike

Defective Lamp?

Lamp may glow for extended period of time. Replace after

when switch is first

checking voltage and ballast.

 

turned on)

 

 

 

 

 

Circuit breaker trips on

Short Circuit or Ground?

Check wiring against diagram. Check for shorts or ground.

lamp start-up

 

 

 

 

 

 

Normal Lamp

Replace Lamp.

 

Depreciation?

 

 

 

 

 

 

Dirty Lamp or Fixture?

Clean lamp and fixture.

 

 

Interchange ballast plugs in generator enclosure. If lamp

Lamp light output low

Defective Ballast?

returns to normal light output, replace ballast. Check for

swollen capacitor, charred wiring, core and coil, or other signs

 

 

 

of excessive heat.

 

 

 

 

 

Check voltage at ballast input. Voltage should be within 10%

 

Wrong Voltage?

of nameplate rating. Check wiring connections for voltage

 

 

loss. Check socket contact point.

 

Improper Ballast?

Check ballast nameplate against lamp data.

 

 

 

 

 

Lamp output and brightness decreases and color changes

 

Normal Lamp

slightly as lamps age. Spot replacement with new lamps

 

Depreciation?

may cause noticeable differences in lamp colors. Group

Lamp colors different.

 

replacement minimizes color differences.

 

 

Dirty Fixture?

Dirty fixtures will cause lamps to appear different in color.

 

 

Clean fixture.

 

 

 

 

 

 

Wrong Lamp?

Check data on lamps which appear different in color. Replace

 

with correct color lamp.

 

 

 

 

 

 

Over Voltage from Power

Check voltage at ballast. Check for current or voltage surges.

ARC tube discolored or

Supply?

Check for shorted capacitors and replace if defective.

swollen.

Improper Ballast?

Lamp operated on ballast designed for higher wattage lamp.

 

Check ballast nameplate against lamp data.

 

 

 

 

 

 

 

Check for outer bulb cracks. If air enters outer bulb, arc tube

 

 

may continue to burn for 100 hours before failure. Check for

 

 

bulb cracks where glass meets the base due to tightening

 

Lamp Damaged?

Lamp too firmly in socket or scoring of glass where socket

Short lamp life.

 

inadvertently touches the lamp bulb. Look for broken arc tube

 

or loose metal parts. Replace lamp. (Bulb leads will cause

 

 

 

 

oxidation of metal parts.)

 

 

 

 

 

Ballast nameplate data should agree with lamp line voltage

 

Improper Ballast?

and lamp use. If improper ballast is used, the lamp life will be

 

 

shortened. A mismatch may also cause the ballast to fail.

MLT25 SERIES LIGHT TOWER • operation manual — rev. #0 (11/28/12) — page 43

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Contents Model MLT25 sERIES Proposition 65 warning Nhtsa Reporting Safety DefectsSpecifications are subject to change without notice Table of ContentsAddresses practices not related to personal injury Safety InformationSaFeTY Messages SaFeTY sYMBOLsGeneRaL saFeTY LaMp saFeTY LIgHT TOWeR saFeTYTOWIng saFeTY Loading and Tie-Down on Flatbed Truck TRanspORTIng saFeTY„ neveR operate light tower ELeCTRICaL saFeTYGenerator/Engine Specifications MLT25 Series SpecificationsLight Tower Specifications Trailer SpecificationsLength Mast Stowed Position Length Mast Deployed Position DimensionsDimensions Reference Letter Description DimensionMetal Halide Lamps General informationMajor Components Control Panel Side ComponentsMajor Components Front/Rear Circuit Breakers, 3-Pole, 15 a Turn the lamps on and offCheck all fastening nuts and bolts for tightness Read all safety instructions at the beginning of manualInspection Before startingFemale and Male Connector Contact between the two connectorsOutriggers and Support Stands OperationStarting the Engine Mast operationRaising the Mast Rotating the Mast Raising the MastLowering the Mast Stowing the Mast to Horizontal PositionVoltage Selector Positions Move the Voltage Selector to the desired positionServicing the Mast Raise/Lower Cable System MaintenanceGenerator/ENGINE Maintenance Check Cable WearLower the mast to the horizontal resting position Servicing the Mast Extension Cable SystemHydraulic Brakes Maintenance TrailersManually Adjusting the Brakes Trailer BrakesHydraulic Brake Troubleshooting Adjustable ChannelLeaf Suspension Wheel Hub AdjustmentCOMMOn Causes for LOss of TRaILeR Safety guidelines TrailersTRaILeR TOWIng guIDeLInes COupLIng to THe TOW veHICLe DRIvIng COnDITIOnsTRaILeR TOWIng TIps InOpeRaBLe BRaKes, LIgHTs or MIRRORsTRaILeR vIn Tag BRaKe COnTROLLeR ELeCTRICaL COnneCTORTOW veHICLe SuspensIOn sYsTeMJaCKsTanD SaFeTY CHaInsTRaILeR LIgHTIng anD BRaKIng COnneCTOR BReaKaWaY sYsTeMTrailer tongue. Wood or concrete blocks may also be used Lock washer and hitch frameCoupling the Trailer to the Tow vehicle Ball Coupler Breakaway Brake system Attaching safety ChainBreakaway Cable surge Brake system Pintle Coupler and pintle Hook Connecting Trailer LightsUncoupling the Ball Hitch PInTLe Hitch COupLeRCoupling Trailer to Tow vehicle pintle Coupler Figure H. Attaching Safety Chain Pintle HitchDetermining Load Limit of Trailer TIRe saFeTY Unsafe Tires, Lug nuts or WheelsBe sure lug nuts are tight before each tow Determining Load Limit of Tow vehicle step StepTable a. speed Rating TIRe FunDaMenTaLsLetter Rating Speed Rating Uniform Tire Quality grading standards uTQgs Tire safety TipsTire Repair Replacing Worn or Damaged TiresLug nut Torque Requirements Table B. Tire Wear TroubleshootingWheel Rims Wheels, Bearings and Lug nutsTable C. Tire Torque Requirements Lights and signalsSymptom Possible Cause Solution Lamp TroubleshootingLamp starts slowly ARC does not strike Defective Lamp? When switch is first Checking voltage and ballast Turned onReplacement minimizes color differences Clean fixtureStarting Lamp Troubleshooting GuideConnections Ballast RemovalElectronic components locator L3 NEU. GND Wiring diagram sheetTB1 E1 AWG Page HERE’S HOW to GET Help
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