Wayne-Dalton 3750-372 - Manual (Page 6)

Starting with the door in the fully open position, place a 6” high ob-
ject on the fl oor progressively one foot from the left side of the door,
center of door and one foot from the right side of the door. (Fig. 7) In
each position, activation of the opener with the wallstation up/down
button should cause the door to move no more than one foot, stop
and then reverse to fully open position. The same 6” high object
when placed on the fl oor, while door is closing, should also cause
the door to reverse.
WARNING
WHEN PERFORMING THIS PART OF
THE TEST, DO NOT PLACE YOURSELF UNDER
DESCENDING DOOR, OR SEVERE OR FATAL INJURY
MAY RESULT.
WARNING
IF THE OPENER DOES NOT RESPOND PROPERLY, TO THIS TEST, HAVE A QUALIFIED SERVICE PERSON
MAKE NECESSARY ADJUSTMENTS/REPAIRS. FAILURE TO MAKE ADJUSTMENTS COULD RESULT IN SEVERE OR FATAL IN-
JURY.
IMPORTANT! THIS INFRARED SAFETY SENSOR SENDS AN INVISIBLE BEAM OF LIGHT
FROM THE SENDING UNIT TO THE RECEIVING UNIT ACROSS THE DOOR OPENING.
THE DOOR OPENER WILL NOT OPERATE UNTIL THE SAFETY SENSOR IS CON-
NECTED TO THE POWER UNIT AND PROPERLY ALIGNED. IF THE INVISIBLE BEAM OF
LIGHT IS MISALIGNED OR OBSTRUCTED, AN OPEN DOOR CANNOT BE CLOSED BY
THE TRANSMITTER OR A MOMENTARY ACTIVATION OF THE WALL MOUNTED PUSH
BUTTON. HOWEVER, THE DOOR MAY BE CLOSED BY HOLDING YOUR FINGER ON THE
WALL PUSH BUTTON (CONSTANT PRESSURE) UNTIL THE DOOR TRAVELS TO A FULLY
CLOSED POSITION.
WARNING
FAILURE TO MAKE ADJUSTMENTS TO ALIGN AND
UNOBSTRUCT INFRARED SAFETY SENSORS BEAM, COULD RESULT IN
SEVERE OR FATAL INJURY.
At this point you will be able to activate the opener; it will open, but will not close the
door unless the sensors are aligned and unobstructed. The safety sensors can be aligned by moving the sending and receiving units in or out (see Fig.
5) until the alignment light on the receiving unit comes on. The 1/4-20 carriage bolt can be loosened to move the unit in or out, as required. If you have
diffi culty aligning beams, check that both brackets are mounted at the same height and remount if necessary. Additional minor adjustments can be made
by lightly bending the mounting brackets (see Fig. 6).Once the alignment light comes on, tighten all bolts and mounting screws. Finish securing all wiring.
Make sure not to break or pierce any of the wires. Loop and secure any extra wire. Using the wall station’s up/down button, activate the opener and check
that it will operate through full open and close cycles.
6
Step 4: Photoelectric Obstruction Sensing Test
Step 3: Photoelectric Safety Sensor Alignment
12”
6”
12”
FIG.5
FIG.6
Top View
Align In Center
(In/Out)
1/4-20 Carriage bolts
IN
OUT
IN
OUT
For this adjustment bend bracket at wall mount
Top view
Align in Center
FIG. 7