Troubleshooting - Da-Lite Tensioned Large Cosmopolitan Electrol Instruction Book

Troubleshooting

Symptom
Screen will not operate.
Motor does not hum.
Incorrect stopping position in
downward direction.
Incorrect stopping position in
upward direction.
Noise.
NOTE: Screen will operate
with a low pitched hum.
Coasting.
10
Cause
Blown fuse.
Tripped circuit breaker.
No power to operating switch
or junction.
Power at junction box
Thermal overload tripped.
Broken wire in the "down" or "up" position.
Defective motor, limit switch or capacitor.
Capacitor burned out.
Lost roller wrap.
"Down" limit switch out of adjustment.
Lost roller wrap.
"Up" limit switch out of adjustment.
Gear noise.
Defective brake.
Solution
Replace fuse.
Reset circuit breaker.
Check above. Tighten all loose wire connections.
Correct any improper connections.
Down Position
Check for power across black and white leads.
Up Position
Check for power across red and white leads.
Let motor cool down for 15 minutes. Try again.
Check for continuity. Cut off old splice and reconnect.
Replace motor assembly. NOTE: Motor is a sealed assembly.
Replace motor assembly.
See instructions below.
Contact Da-Lite at 800-622-3737 or 574-267-8101.
See instructions below.
Contact Da-Lite at 800-622-3737 or 574-267-8101..
Replace motor assembly.
Replace motor assembly.