Troubleshooting - Da-Lite TENSIONED HORIZON ELECTROL Instruction Book

TROUBLESHOOTING

SYMPTOM
1. Screen or mask will not operate.
Motor does not hum.
Motor hums.
2. Image on screen does not match
picture area.
3. Noise.
NOTE: Screen will operate with a
low-pitched hum.
4. Coasting.
5. Fabric hangs crooked.
CAUSE
(a) Blown facility fuse.
(b) Tripped facility circuit breaker.
(c) No power to receptacle in junction
box.
(d) No power to bus interface unit.
(e) Loose control wire connections
Power at junction box
(f) Thermal overload tripped.
(g) Transformer not plugged in.
(h) Defective motor.
(i) Temporary binding.
(a) Screen not set to the correct
format.
(b) Screen or mask out of
adjustment.
(a) Grinding. Foreign object in screen
rubbing on roller or fabric.
(a) Defective brake.
(a) Screen not installed properly.
(b) Fabric has backed up inside case.
(c) Fabric is damaged.
6
SOLUTION
(a) Replace facility fuse.
(b) Reset facility circuit breaker.
(c) Check above. Tighten all loose
wire connections. Recheck
wiring. See installation
instructions.
(d) Make sure transformer is
connected to bus interface – see
wiring diagram.
Defective transformer – replace.
(e) Check all T4 and T6 wire
connections – see wiring
diagram.
(f) Let motor cool down for 15
minutes. Try again.
(g) Plug transformer into receptacle
on non-motor end of screen.
(h) Replace motor assembly.
NOTE: Motor is a sealed assembly.
(i) With power "off," turn roller by
hand to free binding.
(a) Set screen to the format being
projected.
(b) See screen adjustment. We
recommend you have your dealer
make these adjustments for you.
(a) Remove.
(a) Replace motor assembly.
(a) Check for level and plumb.
(b) Lower screen and carefully pull
fabric to remove any slack on the
roller.
(c) Replace fabric.