TROUBLESHOOTING
SYMPTOM
9. Inconsistent stopping points.
CAUSE
(a) Limit switch travel plate not mov-
ing.
(b) Excessive end play in lead screw
of limit switch assembly.
SOLUTION
(a) Tighten set screws located on
nylon gears (drives limit switch).
(b) Tighten nut between adjusting
knobs. Tighten lead screw of limit
switch.
10. Screen does not stop going
up
or
down.
(a) Limit switch assembly paddle
damaged or is out of place.
(a) Remove and check limit switch
assembly. Repair or replace as
necessary.
7
Printed in U.S.A.
46490 Rev. 9/09
