Trouble Shooting
Check Chart for
Medium Pressure
UV Lamps and Systems |
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| Symptom |
Possible Cause |
Corrective Action |
 | Lamp will not Start |
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End of Life |
Replace lamp |
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Poor Socket Contact |
Check lamp for tightness in the socket |
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Low Supply Voltage |
Check if primary input is <10% of rated primary voltage of ballast. If
so, correct regulation |
|
Low Socket Voltage |
Check ballast tap and connections |
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Failed Ballast |
Replace ballast |
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Abnormally Low
Ambient Temperature |
Use ballast rated for low temperature operation |
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Defective Igniter |
Replace igniter |
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 | Lamp has Abnormally Short Life |
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| Over wattage/excessive lamp current loading (may be evidenced by burnt seals, melted
connector, bulged arc tube or discolored bulb.) This happens due to: |
A. |
Use of
failed or improper ballast |
Replace
ballast or lamp to make them compatible |
B. |
Ballast
wrong for supply voltage and frequency |
Used
ballast compatible with supply voltage and frequency |
C. |
Shorted
capacitors (for
constant wattage and constant
watt auto-transformer circuits) |
Replace
capacitors |
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 | Lamp Flickering or Cycling on and Off |
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Failing ballast |
Replace ballast and use compatible ballast |
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Low ballast open circuit volts |
Replace ballast and use compatible ballast |
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Supply voltage di |
Do not allow supply voltage to dip below -10% of rated primary volts of
the ballast |
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Poor electrical connection |
Check contacts and wiring |
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 | Lamp Emits Faint Glow |
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Insufficient open circuit
voltage, hard starter |
Check supply voltage,
starter. Replace lamp |
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End of life depreciated lamp |
Replace lamp |
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Wrong Lamp for Ballast |
Use matching ballast |
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Incorrect tap or low supply voltage |
Correct tap-connection,
regulate supply voltage
per ballast requirements |
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Dirty lamp or fixture |
Clean lamp and fixture routinely |
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Early blackening or bulging
of arc tube, caused by
over wattage, incorrect
ballast, etc. |
Match tap connection
to line voltage, use
matched lamp and ballast |
|
Failed capacitor |
Replace capacitor |