Installation manual

FLUORESCENT LAMP – TROUBLESHOOTING CHARTS
TROUBLE COMMON CAUSE REMEDY
NORMAL END OF LIFE. Normal failure. Active material on Replace lamp promptly.
Lamp won’t operate. Flashes momen- cathodes exhausted.
tarily and goes out or blinks on and
off. Ends probably blackened.
SHORT LIFE. Wrong lamp type used. Replace with lamp type marked in owner’s
manual.
Wrong type of starter. Replace with correct starter.
Ballast not supplying the specified Replace with correct ballast for rating for
electrical values. lamp size.
Wrong type of ballast used. Replace ballast with proper type.
Too low or too high voltage. Check primary voltage with range
specified on ballast name plate.
Poor circuit contact (likely at lamp- Lampholders should be rigidly mounted
holders). and lamp securely seated.
Ballast improperly or incompletely Study ballast label wiring diagram and
connected. check connections.
Too many lamp starts. Average life for most lamps is dependent on
number of starts and hours of operation.
END BLACKENING. Normal end of life. Replace lamp promptly.
Dense blackening at one end or both,
extending 2"-3" from base.
Mercury deposit – generally within Should evaporate as lamp is operated.
1" of lamp end.
Poor circuit contact likely at the Lampholders should be rigidly mounted
lampholder. and lamp securely seated.
Ballast improperly or incompletely Study ballast wiring instructions and check
connected. connections.
Wrong type lamp used. Replace with correct lamp type.
Wrong type of starter or defective Replace with proper starter.
starter causing on/off blinking or
prolonged flashing at each start.
Ballast installed not supplying the Replace with ballast of correct rating for
specified electrical values. lamp size.
Line voltage too low or too high. Check line voltage with range specified on
ballast plate.
Ballast improperly or incompletely Study ballast label wiring instructions and
connected. check connections.
The manufacturer uses standard fluorescent lamps in ail of its applications. Standard one- and two-lamp ballast
circuits are used.
Replacement lamps should be purchased over the counter from a local electrical wholesaler.
The table below indicates general problems that may be encountered with fluorescent lighting applications, possible
causes, and corrective maintenance suggestions.
100 TROUBLESHOOTING