Troubleshooting - Da-Lite Multi-Mask Imager Instruction Book

Troubleshooting

Refer to the following guidelines if you encounter a difficulty in the operation of your Da-Lite Multi-Mask Imager screen.
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 Da-Lite Screen Company.
Symptom
Mask won't operate.
Mask won't roll up or down
(even though power is
available).
Mask roller chatters when
power is activated.
Unit hums in up mode (Mask
has already retracted).
Mask drops when up direction
is activated (grinding noise
occurs).
Mask continues past bottom
stop position.
Batten retracts too far into
frame.
Dirt, fingerprints, marks, etc. on
screen surface.
Indentations appear on screen
surface.
Horizontal mask jams upon
retraction.
Cause
No 120V/220V power available.
Outboard switching problem.
Bad connection at switch.
Can be caused by voltage drop, bad connections
or a defective switch.
The mask batten is retracting too far into the case.
Failure to correct can damage motor. Do not use
the unit until this problem is resolved.
Drop in voltage.
White limit switch is out of adjustment.
Yellow limit switch out of adjustment. Failure to
correct can damage motor. Do not use the unit
until this problem is resolved.
Improper handling of screen.
Debris or particles adhering to screen
due to static cling.
The unit was not level and plumb when mounted.
Solution
Check to see if the circuit breaker has switched off.
Reset if needed.
Check outboard switching apparatus. Check voltage
availability. Contact and Electrician..
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,
check switch line connections.
Have an electrician or qualified service person
check all hook-ups including all outboard wiring.
Have a qualified service person adjust the UP limit switch.
Turn the adjusting screw clockwise.
Mask motor requires full voltage. Have an electrician or
qualified service person check the available voltage.
Re-adjust the Down limit switch. See pp. 6-7 of this manual.
Have a qualified service person adjust the
UP limit switch. See pp. 6-7 of this manual.
Brush off or use a mild detergent solution
with clean rag or cotton swab.
Check back of screen: gently brush debris away by hand.
Remount the unit making sure that it is level and plumb.
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