16
Troubleshooting
Symptom
Cause
Solution
Screen will not operate.
Motor does not hum.
Motor hums.
Incorrect line voltage.
Verify 115-125V (or 220-240V). If insufficient voltage, rewire
incoming electric line.
Blown fuse.
Replace fuse.
Tripped circuit breaker.
Reset circuit breaker.
No power to operating switch or junction.
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.
Power at junction box.
Thermal overload tripped.
Let motor cool down for 15 minutes. Try again.
Broken wire in the “up” or ”down” position.
Check for continuity. Cut off old splice and reconnect.
Defective motor, limit switch or capacitor.
Replace motor assembly.
NOTE: Motor is a sealed assembly.
Temporary binding.
With power “off,” turn roller by hand to free binding.
Capacitor burned out.
Replace motor assembly.
Incorrect stopping position in
downward direction.
“Down” limit switch out of adjustment.
Contact Da-Lite at 800-622-3737 or 574-267-8101.
Incorrect stopping position in
upward direction.
“Up” limit switch out of adjustment.
Contact Da-Lite at 800-622-3737 or 574-267-8101.
Noise.
NOTE: Screen will operate
with a low pitched hum.
Gear noise.
Replace motor assembly.
Coasting.
Defective brake.
Replace motor assembly.
Roller displaced from
mounting bracket.
Pin end slipped out of nylon bearing.
Realign pin end bracket.