Troubleshooting - Da-Lite Cosmopolitan Electrol Instruction Book

TROUBLESHOOTING

SYMPTOM
1. Screen will not operate or will
not go "down".
Motor does not hum.
Motor hums.
2. Screen will not move "up"
Motor does not hum
Motor hums.
CAUSE
(a) Blown fuse.
(b) Tripped circuit breaker.
(c) No power to operating switch
or junction.
Power at junction box
(d) Thermal overload tripped.
(e) Broken wire in the "down"
position.
(f) Defective motor, limit switch
or capacitor.
(g) Temporary binding.
(h) Capacitor burned out.
(a) Blown fuse.
(b) Tripped circuit breaker.
(c) No power to operating switch
or junction.
Power at junction box
(d) Thermal overload tripped.
(e) Broken wire in the "up"
position.
(f) Defective motor, limit switch
or capacitor.
(g) Temporary binding.
(h) Capacitor burned out.
4
SOLUTION
(a) Replace fuse.
(b) Reset circuit breaker.
(c) Check above. Tighten all loose
wire connections. Correct any
improper connections.
"Down" Position
Check for power across black
and white leads.
(d) Let motor cool down for 15
minutes. Try again.
(e) Check for continuity. Cut off old
splice and reconnect.
(f) Replace motor assembly.
NOTE: Motor is a sealed assembly.
(g) With power "off", turn roller by
hand to free binding.
(h) Replace motor assembly.
(a) Replace fuse.
(b) Reset circuit breaker.
(c) Check above. Tighten all loose
wire connections. Correct any
improper connections.
"Up" Position
Check for power across red and
white leads.
(d) Let motor cool down for 15
minutes. Try again.
(e) Check for continuity. Cut off old
splice and reconnect.
(f) Replace motor assembly.
NOTE: Motor is a sealed assembly.
(g) With power "off", turn roller by
hand to free binding.
(h) Replace motor assembly.