Da-Lite PROFESSIONAL ELECTROL Buku Instruksi - Halaman 7
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Halaman Cetak
Troubleshooting
Symptom
Screen will not operate or will
not go "down".
Motor does not hum.
Motor hums.
Screen will not move upward.
Motor does not hum.
Motor hums.
Cause
Blown facility fuse.
Tripped facility circuit breaker.
No power to operating switch or junction box.
Power at junction box
Thermal overload tripped.
Broken wire in the "down" position.
Defective motor, limit switch or capacitor.
Temporary binding.
Capacitor burned out.
Blown facility fuse.
Tripped facility circuit breaker.
No power to operating switch or junction box.
Power at junction box
Thermal overload tripped.
Broken wire in the "up" position.
Defective motor, limit switch or capacitor.
Temporary binding.
Capacitor burned out.
Solution
Replace facility fuse.
Reset facility circuit breaker.
Check above. Tighten all loose wire connections.
Recheck wiring. See installation instructions.
"Down" Position
Check for power across black and white leads.
Let motor cool down for 15 minutes. Try again.
Check for continuity.
Replace motor assembly. NOTE: Motor is a sealed assembly.
With power "off," turn roller by hand to free binding.
Replace motor assembly.
Replace facility fuse.
Reset facility circuit breaker.
Check above. Tighten all loose wire connections.
See above.
"Up" Position
Check for power across red and white leads.
Let motor cool down for 15 minutes. Try again.
Check for continuity.
Replace motor assembly. NOTE: Motor is a sealed assembly.
With power "off," turn roller by hand to free binding.
Replace motor assembly.
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