TROUBLESHOOTING (lamps)

 

 

 

 

 

 

 

 

 

 

Table 13. Lamp Troubleshooting

 

 

 

 

 

 

Symptom

Possible Cause

 

Solution

 

 

 

 

 

 

 

Lamp Burned Out?

 

Test the lamp in a fixture which is operating properly.

 

 

 

Replace if necessary.

 

 

 

 

 

 

 

 

Inspect lamp base to see if there is arcing at center

 

 

Lamp Loose in Socket?

 

contact button. Tighten lamp snugly. Check socket for

 

 

 

 

damage. Replace if defective.

 

 

 

 

 

 

 

Lamp Plugs Not Tight?

 

Check plug and receptacle. Tighten if loose.

 

 

 

 

 

 

 

 

 

Interchange ballast plugs in generator enclosure.

 

 

Defective Ballast?

 

If lamp starts, replace ballast. Check ballast wiring

 

 

 

against diagram. Check for swollen capacitor, charred

 

 

 

 

 

 

 

 

wiring, core and coil or other signs of excessive heat.

 

 

 

 

Check line voltage at ballast input. Voltage should

 

 

Low Voltage?

 

be within 10% of nameplate rating when operating

 

 

 

at normal load. Increase supply voltage or remove

 

 

 

 

 

 

 

 

external load.

 

Lamp will not start.

 

 

 

 

 

 

Proper HID lightswill perform erratically or fail to start

 

 

 

 

on an improper ballast. The ballast nameplate data

 

 

Improper Ballast?

 

must agree with the line voltage and lamp used.

 

 

 

Improper ballast causes lamp failure. Note: Mercury

 

 

 

 

 

 

 

 

lightsof the same wattage will operate properly on

 

 

 

 

Metal Halide ballasts.

 

 

 

 

Operating position should agree with the lamp tech.

 

 

 

 

A BU-HOR lamp can be operated base up vertical to

 

 

Improper Lamp Operating

 

and including the horizontal and a BD can be operated

 

 

Position (Metal Halide only)?

 

base down vertical to, approaching, but not including

 

 

 

 

the horizontal. A lamp operated beyond the specified

 

 

 

 

position may not start.

 

 

 

 

 

 

 

 

 

HID lights(High Pressure Sodium, Metal Halide,

 

 

Lamp has been Operating: Cool

 

Mercury Vapor) require from 4 to 8 minutes cool-down

 

 

Down Time Insufficient?

 

time before restarting. Switch off breaker and allow

 

 

 

 

lamp to cool.

 

 

 

 

 

 

 

 

 

Improper ballasting can cause flickering or erratic

 

 

Improper Ballast?

 

operation. In the start-up period the lamp may ignite,

 

Lamp flickers and goes

 

 

start to warm up and then extinguish (cycle).

 

out intermittent or

 

 

Under certain conditions new lightsmay "cycle".

 

cycling.

New Lamp?

 

Usually after 3 tries to start at 30 to 60 second

 

 

 

 

intervals, lightswill stabilize and operate satisfactorily.

 

 

 

 

 

 

 

Defective Lamp?

 

Replace lamp.

 

 

 

 

 

LT6D LIGHT TOWER • operation manual — rev. #0 (07/16/13) — page 61

Page 61
Image 61
Multiquip LT6D operation manual Troubleshooting lamps, Lamp Troubleshooting