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Screen travel is stopped automatically in the down and up positions by the limit switches that are preset at the factory. If it's necessary 
to adjust for more or less drop follow the steps below. The case cover must be removed to access the motor limit switches.

Remove the front cover of the screen from the back of the screen. Lift front cover up approximately 1/2" and pull away from back of 
screen. See Figure 1.

Setting The Down Limit Position

To Reduce Screen Drop:

 

Turn the white limit switch screw clockwise to decrease the 
amount of screen drop. Run the screen down to test the stop 
position. If the screen drops too far, raise the screen about 

one foot and adjust the limit switch again. Repeat until the 
desired position is set.

To Increase Screen Drop:

 

Turn the white limit switch screw counterclockwise to 
increase the amount of screen drop. Run the screen down to 
test the stop position. If the screen does not drop enough, 
raise the screen about one foot and adjust the limit switch 
again. 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.

Designer Da-Tab Electrol® Installation

Screen Adjustment For 120V And 220V/240V Screens

120V Wiring Diagram

Up Red Limit Switch Knob

In Multiple Control Installations 
This Switch Is Replaced By The 
Low Voltage Control, Operated 
From Push Button Stations.

Operating Switch, Switch 
Box, And Plate Furnished 
With Screen. (SPDT With 
Center Off)

This Switch Cannot Be Used With LVC.

NOTE:

 A single switch cannot be used to operate more than

one screen. Contact the factory for further information.

Black Do

wn

Black

Up

Red

Down

AC Hot

Off

Whit

e Common

Black With Yellow

R

ed Up

Rocker 

Switch

AC Common

120 V. 50/60 Hz. 
2.5 Amp. Max

Down White Limit 
Switch Knob 

Motor

External Wiring  
To Be Completed  
By Installer.

Side View 
Of Switch 
And Box

Figure 3

240 Volt Wiring Diagram For Standard Wall Switch:

Da-Lite offers two styles of 240 volt wall switches for standard 
operation. Please see wiring diagram included in wall switch box 
included with screen.

To Junction Box, Mounted In Screen Case,  
In Which Internal Wiring Terminates In White, 
Black And Red Leads.

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