Da-Lite Multi vision imager, Instruction Book

Page: 8 / 12

8
Cleaning
Troubleshooting
Da-Tex®, Dual Vision, Pearlescent, Cinema Vision, High
Power®, Da-Mat®, High Contrast Da-Mat®, Audio Vision, High
Contrast Audio Vision, High Contrast Cinema Vision
and High
Contrast Cinema Perf
surfaces can be cleaned as follows:
Using a white clean cloth (100% cotton preferred) that is
dampened with clear water, gently wipe the area in one direction.
Do not use a circular motion. Using a dry 100% cotton cloth,
wipe dry after each cleaning session. To clean a stubborn stain
or a sticky surface, use denatured alcohol (methanol or methyl
alcohol) following the same procedure as for water.
Symptom Cause Solution
Screen will not operate.
Motor does not hum.
Incorrect line voltage.
Verify 115-125V (or 220-240V). If insufficient voltage,
rewire incoming electric line.
Blown fuse. Replace fuse.
Tripped circuit breaker. Reset circuit breaker.
No power to operating switch or junction.
Check above. Tighten all loose wire connections.
Correct any improper connections.
"Down" Position
Check for power across black and white leads.
"Up" Position
Check for power across red and white leads.
Power at junction box
Thermal overload tripped.
Let motor cool down for 15 minutes. Try again.
Broken wire in the “down” or “up” position. Check for continuity. Cut off old splice and reconnect.
Defective motor, limit switch or capacitor.
Replace motor assembly.
NOTE: Motor is a sealed assembly.
Capacitor burned out. Replace motor assembly.
Incorrect stopping position
in downward direction.
“Down” limit switch out of adjustment. See screen adjustment section, page 7.
Incorrect stopping position
in upward direction.
“Up” limit switch out of adjustment. See screen adjustment section, page 7.
Noise.
NOTE: Screen will operate
with a low pitched hum.
Gear Noise Replace motor assembly.
Grinding. Foreign object in screen
rubbing on roller or fabric.
Remove.
Coasting.
Defective Brake. Replace motor assembly.