OPERATING THE MASK
The method you use to raise and lower a mask depends on the type of switch control device you have selected. When you lower or retract a mask, it will stop at its preset limit.
Note: The horizontal masking panels move more slowly than the vertical masking panels. The slower motion allows you to adjust the image area with greater precision.
The motor is designed to be used for short operations such as positioning the masks in preparation for viewing. The motor is not designed for continuous duty. If the motor operates continually for more than a few minutes, it may automatically shut off to prevent damage from overheating. If the motor occasionally needs to be run more than normal, for example during initial setup and positioning, allow time for the motor to cool down.
In general, when a mask is not in use, you should store it in the fully retracted position.
Caution
Do not operate the motor when any of the following occurs:
The unit emits any smoke, heat, abnormal noise or unusual odor.
The unit is damaged in some way, such as damage from a water leak.
If any of these situations occur, call a qualified service person.
ADJUSTING THE MASK EXTENSION
Warning!
A mask is fully retracted when the batten is behind the panel of the frame. Do not attempt adjustments with a retraction (UP) limit switch that will further retract a mask. Incorrect adjustment of that switch will cause panel damage. Please consult the factory if you have any questions.
Caution
Improper adjustment of the limit switches can cause irreparable damage to a mask itself, resulting in voiding the factory warranty.
The extension and retraction limit switches have been preset at the factory. In general, we advise you to avoid readjusting these switches.
In some cases, to enable proper alignment of the displayed image on the screen, you may need to adjust the extension of a mask. If adjustment to the extension is necessary, carefully follow these instructions.
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