Da-Lite PROFESSIONAL ELECTROL Instruction Book - page 7
6
TROUBLESHOOTING
SYMPTOM
3.
“Down”
limit switch incorrect.
CAUSE
(a)
“Down”
limit switch out of
adjustment
SOLUTION
(a) See installation instructions
4. Noise
NOTE:
Screen will operate with a
low-pitched hum.
(a) Squeaking, rubber end plug rub-
bing on motor.
(b) Grinding. Foreign object in screen
rubbing on roller or fabric.
(c) Gear noise.
(a) Center roller between mounting
brackets by pushing roller away
from motor end.
(b) Remove foreign object.
(c) Replace motor assembly.
6. Roller displaced from mounting
bracket.
(a) Pin end slipped out of nylon
bearing.
(a) Remove pin end mounting.
Realign motor in tube. Reattach
pin end.
5. Coasting
(a) Defective brake.
(a) Replace motor assembly.
7. Fabric hangs crooked.
(a) Screen not installed properly.
(b) Fabric has backed up inside case.
(c) Fabric is damaged.
(a) Check for level and plumb.
(b) Adjust
“down”
limit switch slowly
until roller is exposed and wrinkle
comes out, then readjust for
proper drop.
(c) Replace fabric.