|
| 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 | |||
|
| ||
|
|
| |
| 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)
