6
TROUBLESHOOTING
SYMPTOM
1. Screen will not operate.
Motor does
not
hum.
Motor
hums.
2.
Incorrect stopping position in
downward
direction.
3.
Incorrect stopping position in
upward
direction.
4.
Noise.
NOTE: Screen will operate with a
low pitched hum.
5.
Coasting.
6.
Roller displaced from mounting
bracket.
CAUSE
(a) Incorrect line voltage.
(b) Blown fuse.
(c) Tripped circuit breaker.
(d) No power to operating switch
or junction.
Power at junction box
(e) Thermal overload tripped.
(f) Broken wire in the
“up”
or
”down”
position.
(g) Defective motor, limit switch or
capacitor.
(h) Temporary binding.
(i) Capacitor burned out.
(a)
“Down”
limit switch out of
adjustment
(a)
“Up”
limit switch out of
adjustment
(a) Gear noise.
(a) Defective brake.
(a) Pin end slipped out of nylon
bearing.
SOLUTION
(a) Verify 115-125V (or 220-240V). If
insufficient voltage, rewire
incoming electric line.
(b) Replace fuse.
(c) Reset circuit breaker.
(d) 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.
(e) Let motor cool down for 15
minutes. Try again.
(f) Check for continuity. Cut off old
splice and reconnect.
(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) See installation instructions.
(a) Adjust
“up”
limit switch. Call the
factory for instructions.
(a) Replace motor assembly.
(a) Replace motor assembly.
(a) Realign pin end bracket.
