Specifications

PAGE 40 — MODULAR LIGHT TOWER — PARTS & OPERATION MANUAL — REV. #3 (06/26/06)
MODULAR LIGHT TOWER — TROUBLESHOOTING
TROUBLESHOOTING GUIDE
Use the following procedure to determine which of the four floodlights is not functioning:
Connections:
1. Make sure that floodlight #1 power cable is plugged into the J1 connector on the T-Bar assembly.
2. Make sure that floodlight #2 power cable is plugged into the J2 connector on the T-Bar assembly.
3. Make sure that floodlight #3 power cable is plugged into the J3 connector on the T-Bar assembly.
4. Make sure that floodlight #4 power cable is plugged into the J4 connector on the T-Bar assembly.
5. Make sure that 120 VAC is present at the generator's output receptacle. This can be accomplished by disconnecting
the power cable and measuring the voltage across the connector pins with an AC voltmeter.
6. With the voltmeter set to the AC position, insert the negative lead of the AC voltmeter into pin W (neutral) on the
receptacle.
7. Insert the positive lead of the voltmeter into pin X (hot for CB1 and fan) on the receptacle, and observe that 120 VAC
is present.
8. Next, insert the positive lead of the voltmeter into pin Y (hot for CB2) on the receptacle, and observe that 120 VAC is
present.
9. If the correct voltages are present at the generator's output receptacle, plug the power cable from the ballast compartment
into the 120 VAC twist-lock receptacle on the generator or welder.
Starting:
1. Start the welder or generator and verify that there are no abnormal sounds.
2. Turn both CB1 and CB2 circuit breakers to the ON position.
3. Wait a few minutes and determine which flood light is not igniting.
4. If one of the floodlights 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 un-plugging a power cable.
5. If the floodlight still does not ignite after plugging it into a working receptacle (120 VAC present), then it can be assumed
that the ballast for that flood light is defective. Replace ballast.
Ballast Removal:
1. Remove the power cable from the generator or welder, 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. Remove the defective ballast (see Ballast Compartment assembly drawing, page 74), 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.