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LIGHT FIXTURE TROUBLESHOOTING
DANGER! Do not open fixtures while light circuit breaker is “ON”. Allow lamp to cool before touching.
**TAKE EXTRA PRECAUTIONS WHEN TROUBLESHOOTING ELECTRICAL PROBLEMS**
A. Only use a voltmeter with two well-insulated pin probes rated for 600 volts.
B. Treat all conductors as potentially hot.
C. Proceed through circuits systematically, operating only one section at a time.
D. Before disconnecting ballast, turn off circuit breaker and wait 30 seconds for capacitor to discharge.
E. If all the lights are out and all the ballasts are receiving power, suspect burned out power cable.
SYMPTOM CAUSES CORRECTIVE ACTION
LAMP WILL Check Ballast Status Light a.Input lights should be on. This confirms power is going
NOT START to the ballast.
b.Output lights should be on. This confirms power is
coming from ballasts.
c.Output lights should be normal brightness. If one or
more of the output lights stay extra-bright, then the lamp is
not striking.
d.Use this knowledge to diagnose problem.
e.If ballast status light is out, but the floodlight lamp is
working, suspect burned out ballast status lamp and replace
Lamp loose in socket Inspect lamp base to see if there is arcing at center contact
button. Tighten lamp snugly. Check socket for damage.
Replace if defective.
Floodlight Plugs not tight Check plug and receptacle. Tighten if loose.
Defective Ballast Interchange ballast plugs in generator enclosure. If lamp
starts, replace ballast. Check ballast wiring diagram. Check
for swollen capacitors, charred wiring, core and coil, or
other signs of excessive heat.
Low Voltage Check line voltage at ballast input. Voltage should be
within 10% of nameplate rating when operating at normal
load. Increase supply voltage or remove external load.
Improper ballast Proper HID lamps will perform erratically or fail to start on
an improper ballast. The ballast nameplate data should
agree with the line voltage and lamp used. Improper ballast
will cause lamp to fail.
Improper lamp operating Operating position should agree with lamp etch. A BUHOR
position lamp can be operated base up vertical to and including the
horizontal and BD can be operated base down and vertical
to, approaching, but not including the horizontal. A lamp
operated beyond the specified position may not start.
Lamp has been operating; HID lamps require 4 to 8 minutes cool-down time before
cool down time insufficient restarting. Switch off breaker and allow lamp to cool.
