Da-Lite Designer Electrol, Instruction Book

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.

SCREEN ADJUSTMENT FOR 120V AND 220/240V SCREENS

UP RED LIMIT SWITCH KNOB

TO JUNCTION BOX MOUNTED IN

SCREEN CASE, IN WHICH INTERNAL 

WIRING TERMINATES IN WHITE,

BLACK AND RED LEADS.

IN MULTIPLE CONTROL INSTALLATIONS 
THIS SWITCH IS REPLACED BY THE LOW 
VOLTAGE CONTROL, OPERATED FROM 
PUSH BUTTON STATIONS. SEE DIAGRAM 
Nos. 46967 AND 74425, AVAILABLE UPON 
REQUEST.

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 DOWN

BLACK

UP

RED

DOWN

AC HOT

OFF

WHITE COMMON

BLACK WITH YELLOW

RED UP

ROCKER

SWITCH

AC COMMON

120 VOLTS

50/60 HZ.

2.5   MAX. AMP.

DOWN WHITE LIMIT 
SWITCH KNOB

MOTOR

EXTERNAL WIRING

TO BE COMPLETED

BY INSTALLER.

SIDE VIEW

OF SWITCH

AND BOX

FIGURE 3

DESIGNER ELECTROL

®

 INSTALLATION

120V  

WIRING DIAGRAM

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.

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