20
Stewart Filmscreen
TROUBLESHOOTING
Refer to the following guidelines if you encounter a difficulty in the operation of your Stewart Filmscreen
product Problems related to electrical or motor function may require a qualified service person or
electrician Should you have a problem that is not addressed here, call Stewart Filmscreen Corporation
(310-784-5300) Toll free (800-762-4999)
Problem
Cause
Action Steps
Screen won't operate
No AC power available
Check to see if the circuit
breaker has switched off Reset
if needed Check outboard
switching apparatus Check
voltage availabilty Contact an
electrician
Screen won't roll up or down
(even though power is available)
Bad connection at switch
Polarity of STI line may be bad
Screen roller chatters when
power is activated
Can be caused by voltage
drop, bad connections, or a
defective switch
Have an electrician or
qualified service person
check all hookups including
outboard wiring
Unit hums in up mode
The screen batten is retracting
too far into the case Failure to
correct can damage motor and
screen Do not use the unit
until this problem is resolved
Have a qualified service
person adjust the yellow UP
limit switch
Screen drops when up
direction is activated
Drop in voltage
Screen motor requires full
voltage Have an electrician
or qualified service person
check available voltage
Screen continues past bottom
stop position
White limit switch is out of
adjustment
Readjust the white DOWN
limit switch See the section
on Adjusting the Screen
Extension of this manual
Batten retracts too far into
case
Yellow limit switch is out of
adjustment Failure to correct
can damage motor and screen
Do not use the unit until the
problem is resolved
Have a qualified service person
adjust the yellow UP limit switch
