14
Stewart Filmscreen Corporation
Refer to the following guidelines if you encounter a difficulty in the operation of
your Stewart Electriscreen. 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 the Stewart
Filmscreen Corporation.
T
ROUBLESHOOTING
Problem description
Probable cause
Action to take
Screen won’t operate.
No AC power available .
Check to see if the circuit breaker
has switched off. Reset if
needed.
Check voltage availability.
Contact an electrician.
Screen won’t roll up or down
(even though power is available ).
Bad connection at switch.
Have an electrician or qualified
service person check the
connection as follows:
·
If you have a
high voltage
control
switch, check switch -line
connections.
·
If you have a
low voltage control
unit, che ck switch-line
connections.
·
If you have a
screen trigger
interface
, contacts may be
sticking. Tap relay to free
contacts.
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 the
hook-ups including all outboard
wiring.
Unit hums in up mode. (Screen
has already retracted.)
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.
Turn the adjusting screw
clockwise.
Screen drops when up direction
is activated (grinding noise
occurs).
Drop in voltage.
Screen motor requir es 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. Turn the adjusting screw
clockwise.
