Da-Lite MULTI-MASK IMAGER, Instruction Book, Page: 8 / 12

7
Modifying the extension of the mask
You can increase the extension of a mask up to 3" past the factory preset stop, or you can decrease the extension by
approximately 4-6" from the factory preset stop. Do not attempt to modify a mask extension beyond these recommended
amounts.
The limit switches are accessed through openings located on the left side of the frame as shown in Figure 8.
FIGURE 8
Horizontal mask units have limit switches at the top and bottom of the screens, a set for each roller tube.
WARNING! The up limit switch(es) retract the batten further into the unit. Adjusting it is not advised. Refer to 1, 3 or 5 as appropriated
in Figure 8.
To increase a mask’s fully extended (mask down) stop position:
1. Lower the mask to its current stop position.
2. Locate the down limit switch(es) located on the left side of the frame. Refer to 2, 4 or 6 as appropriate in Figure 8.
Use an Allen wrench to turn the switch in a counterclockwise direction. If the power is on, the mask will drop
incrementally as the switch is turned.
NOTE: One complete turn of the switch will make approximately a 1/2" change in the
mask’s stop position.
To decrease the screen extension:
1. Lower the mask until it is extended about halfway down.
2. Locate the down limit switch(es) located on the left side of the frame. Refer to 2, 4 or 6 as appropriate in Figure 8.
Use an Allen wrench to turn the switch in a clockwise direction. NOTE: One complete turn of the switch will make
approximately a 1/2" change in the mask’s stop position.
3. Activate the mask in the down direction until it reaches the newly reduced stop position. Repeat this procedure
until the desired stop position is reached.
Once you have made the adjustment, whenever you lower the mask, it will automatically stop at the new position.
HORIZONTAL MASK
VERTICAL MASK
SCREEN
HORIZONTAL MASK
1
2
3
4
5
6