Wayne-Dalton 3750-372 - Manual (Page 3)

WARNING
DISCONNECT ALL POWER TO GARAGE DOOR
OPENER BEFORE SERVICING OR INSTALLING ACCESSORIES OR
PHOTOELECTRIC SAFETY SENSORS. FOR ALL OPENERS, UNPLUG 120
V AC POWER CORD FROM RECEPTACLE. FOR DOORMASTER, ALSO
UNPLUG TELEPHONE CORD TYPE COMMUNICATIONS CABLE.
Select a mounting position, no more than 5 inches above the fl oor to center line of
wall mounting bracket. The sending and receiving units should be mounted inside the
door opening to minimize any interference by the sun. However, the sensors should
be mounted as close to the door track or inside edge of the door as possible to offer
maximum entrapment protection. It is very important that both wall brackets be mounted
at the same height for proper alignment.
Identify which side of the garage door opening (if any) is “likely” to be exposed to sun-
light. Since sunlight may affect photoelectric sensors, mount the sending unit (not the
receiving unit) on the side of the door opening most exposed to the sun.
The brackets may be temporarily mounted to the jamb with a 1” fl at head nail (provided)
using the small hole above the slot. Using two 5/16 x 1-1/2” lag screws (provided),
permanently mount the wall mounting brackets to both door jambs. In some installa-
tions it may be necessary to attach a wooden spacer to the wall to achieve the required
clearance.
Attach the “U” brackets to the wall brackets with a 1/4-20 carriage bolt, washer and
nut (provided). Insert the bolt from the inside of the “U” bracket and hand tighten only
at this time.
NOTE: If wires must be lengthened or spliced into prewired installation, use wire nuts
or suitable connectors.
Attach the sending and receiving units to the “U” brackets by inserting their tabs into
the respective holes.
3
Step 1: Photoelectric Safety Sensor Bracket Installation
LED Alignment
Light
Receiving Unit
Sending Unit
(No LED)
Wall Mounting
Brackets
“U” Brackets
Nut
(1)1/4-20 X 1/2”
Carriage Bolt
(1) 5/16 X 1-1/2”
Lag Screw
5”
Nail
Tab Holes
Top & Bottom
Washer
Tabs
Top & Bottom