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| TROUBLESHOOTING (lamps) | |
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| Table 13. Lamp Troubleshooting | ||
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| Symptom | Possible Cause |
| Solution |
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| Lamp Burned Out? |
| Test the lamp in a fixture which is operating properly. |
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| Replace if necessary. | |
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| Inspect lamp base to see if there is arcing at center |
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| Lamp Loose in Socket? |
| contact button. Tighten lamp snugly. Check socket for |
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| damage. Replace if defective. |
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| Lamp Plugs Not Tight? |
| Check plug and receptacle. Tighten if loose. |
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| Interchange ballast plugs in generator enclosure. |
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| Defective Ballast? |
| If lamp starts, replace ballast. Check ballast wiring |
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| against diagram. Check for swollen capacitor, charred | |
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| wiring, core and coil or other signs of excessive heat. |
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| Check line voltage at ballast input. Voltage should |
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| Low Voltage? |
| be within 10% of nameplate rating when operating |
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| at normal load. Increase supply voltage or remove | |
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| external load. |
| Lamp will not start. |
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| Proper HID lightswill perform erratically or fail to start | |
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| on an improper ballast. The ballast nameplate data |
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| Improper Ballast? |
| must agree with the line voltage and lamp used. |
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| Improper ballast causes lamp failure. Note: Mercury | |
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| lightsof the same wattage will operate properly on |
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| Metal Halide ballasts. |
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| Operating position should agree with the lamp tech. |
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| A |
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| Improper Lamp Operating |
| and including the horizontal and a BD can be operated |
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| Position (Metal Halide only)? |
| base down vertical to, approaching, but not including |
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| the horizontal. A lamp operated beyond the specified |
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| position may not start. |
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| HID lights(High Pressure Sodium, Metal Halide, |
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| Lamp has been Operating: Cool |
| Mercury Vapor) require from 4 to 8 minutes |
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| Down Time Insufficient? |
| time before restarting. Switch off breaker and allow |
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| lamp to cool. |
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| Improper ballasting can cause flickering or erratic |
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| Improper Ballast? |
| operation. In the |
| Lamp flickers and goes |
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| start to warm up and then extinguish (cycle). |
| out intermittent or |
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| Under certain conditions new lightsmay "cycle". |
| cycling. | New Lamp? |
| Usually after 3 tries to start at 30 to 60 second |
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| intervals, lightswill stabilize and operate satisfactorily. |
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| Defective Lamp? |
| Replace lamp. |
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LT6D LIGHT TOWER • operation manual — rev. #0 (07/16/13) — page 61