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.
CAUSE
(a) Blown facility fuse.
(b) Tripped facility circuit breaker.
(c)
No power
to operating switch or
junction box.
Power at junction box.
(d) Thermal overload tripped.
(e) Defective motor, limit switch or
capacitor.
(f) Temporary binding.
(a) Blown facility fuse.
(b) Tripped facility circuit breaker.
(c) No power to operating switch or
junction box.
Power at junction box.
(d) Thermal overload tripped.
(e) Defective motor, limit switch or
capacitor.
(f) Temporary binding.
SOLUTION
(a) Replace facility fuse.
(b) Reset facility circuit breaker.
(c) Check above. Tighten all loose
wire connections. Recheck
wiring. See installation
instructions.
“Down” Position
Check for power across black and
white leads.
(d) Let motor cool down for 15
minutes. Try again.
(e) Replace motor assembly.
NOTE: Motor is a sealed assembly.
(f) With power
“off”,
turn roller by
hand to free binding.
(a) Replace facility fuse.
(b) Reset facility circuit breaker.
(c) Check above. Tighten all loose
wire connections. See above.
“Up” Position
Check for power across red and
white leads.
(d) Let motor cool down for 15
minutes. Try again.
(e) Replace motor assembly.
NOTE: Motor is a sealed assembly.
(f) With power
“off”,
turn roller by
hand to free binding.
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