Da-Lite Motorized Scenic Roller - Manual (Page 6)

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The stop positions of the screen are preset at the factory. If adjustments are necessary, the limit switch screws located at the end
of each motor can adjust the stop positions. Use a 5/32" hex key or a flat screwdriver. Adjustments should be made in small increments
by turning the adjustment screws a half turn at a time. Refer to figure 3.
Setting The "Down" Limit Position.
Screen Drops Too Far:
Left motor (as viewed from audience side): Turn the white limit
switch screw clockwise to decrease the amount of fabric drop.
Right motor (as viewed from audience side): Turn the yellow limit
switch screw clockwise to decrease the amount of fabric drop.
After adjusting the limit screws on both motors, run the screen
down to test the stop position. Repeat until the desired position
is set.
Screen Does Not Drop Enough:
Left motor (as viewed from audience side): Turn the white
limit switch screw counterclockwise to increase the amount
of fabric drop.
Right motor (as viewed from audience side): Turn the yellow
limit switch screw counterclockwise to increase the amount
of fabric drop.
After adjusting the limit screws on both motors, run the screen
down to test the stop position. Repeat until the desired position
is set. Do not adjust for more drop than what was ordered. At
least 1-1/2 wraps of fabric must remain on the roller.
Setting The "Up" Limit Position.
Screen Travels Up Too Far:
Left motor (as viewed from audience side): Turn the yellow limit
switch screw clockwise to decrease the amount of travel.
Right motor (as viewed from audience side): Turn the white limit
switch screw clockwise to decrease the amount of travel.
After adjusting the limit screws on both motors, run the screen
up to test the stop position. If the screen travels up too far, the
safety stop switch will be activated and all power to the motors
will be shut off. You will have to deactivate the switch by hand. To
do this, push down on the switch trigger (see Figure 1) to release
the switch and have someone run the screen down. This safety
switch is to prevent the screen from traveling too far and binding
the motors should the motor limit switches fail.
Screen Does Not Travel Up Far Enough:
Left motor (as viewed from audience side): Turn the yellow limit
switch screw counterclockwise to increase the amount of travel.
Right motor (as viewed from audience side): Turn the white limit
switch screw counterclockwise to increase the amount of travel.
After adjusting the limit screws on both motors, run the
screen up to test the stop position. Repeat until the desired
position is set.
Limit Switch Adjustment