Da-Lite Boardroom ElEctrol 지침서 - 페이지 7
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페이지 인쇄
TROUBLESHOOTING
SYMPTOM
1. Screen will not operate or will not
go "down."
Motor does not hum.
Motor hums.
2. Screen will not move upward.
Motor does not hum.
Motor hums.
3.Door will not open
CAUSE
(a) Blown fuse.
(b) Tripped circuit breaker.
(c) No power to operating switch or
junction box.
Power at junction box
(d) Thermal overload tripped.
(e) Broken wire in the "down" posi-
tion.
(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 box.
(d) Open door limit switch.
Power at junction box
(e) Thermal overload tripped.
(f) Broken wire in the "up" position.
(g) Defective motor, limit switch or
capacitor.
(h) Temporary binding.
(i) Capacitor burned out.
(a) Hinge is bound or has a foreign
substance on it which does not
allow it to open by gravity.
(b) Slat hooks catch on access door.
6
SOLUTION
(a) Replace fuse.
(b) Reset circuit.
(c) Check above. Tighten all loose
wire connections. Recheck
wiring. See installation instruc-
tions.
"Down" Position
Check for power across black and
white leads.
(d) Let motor cool down for 15 min-
utes. Try again.
(e) Check for continuity.
(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. See above.
"Up" Position
Check for power across red and
white leads.
(d) Replace switch.
(e) Let motor cool down for 15 min-
utes. Try again.
(f) Check for continuity.
(g) Replace motor assembly. NOTE:
Motor is a sealed assembly.
(h) With power "off," turn roller by
hand to free binding.
(i) Replace motor assembly.
(a) Check installation to free door.
Clear any foreign substance; i.e.,
paint or plaster from hinge.
(b) Adjust slat hooks.
Door can be opened by removing
four screws holding slat hooks to
door. Access should be provided
to these screws during and after
installation.