Multiquip LT12D Lamp starts slowly ARC does not strike Defective Lamp?, Lamp start-up, Supply?

Page 42

 

 

TROUBLESHOOTING

 

 

 

 

Table 11. 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

 

Defective Ballast?

returns to normal light output, replace ballast. Check for

Lamp light output low

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.

PAGE 42 — 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 TruckElectrical Safety Power Cord/Cable SafetyGrounding Safety Battery Safety Environmental SafetyLamp Footcandle Plot Lamp Footcandle PlotSpecifications Generator SpecificationsTrailer 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 CheckBattery Check Fuel CheckWipe up any spilled fuel immediately 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 SystemStorage Removal from Long Term StorageLower the mast to the horizontal resting position Maintenance Trailers Adjustable ChannelWheel HUB Adjustment Leaf Suspension Leaf Suspension ComponentsTroubleshooting Generator TroubleshootingSymptom Solution 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 Guidelines Common Causes for Loss of TrailerTrailer Towing Guidelines Driving Conditions Coupling to the TOW VehicleInoperable BRAKES, Lights or Mirrors Trailer Towing TipsTrailer VIN TAG Suspension System Electrical ConnectorTOW Vehicle Side View MirrorsCoupler Types Safety ChainsJackstand Ball Hitch CouplerLock washer and hitch frame Coupling theTrailer to theTow Vehicle Ball CouplerAttaching Safety Chain Connecting Trailer LightsUncoupling the Ball Hitch Pintle Hitch Coupler Pintle Coupler and Pintle HookTire Safety Unsafe Tires, Lug Nuts or WheelsCoupling Trailer to Tow Vehicle Pintle Coupler Tighten lug nuts before each tow Determining Load Limit of TrailerStep Be sure lug nuts are tight before each towDetermining Load Limit of Tow Vehicle Step Tire FundamentalsP indicates the tire is for passenger vehicles Uniform Tire Quality Grading Standards Utqgs Table A. Speed RatingLetter Rating 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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