Wire The Safety Reversing Sensors - LiftMaster 8500 Manual Del Usuario

Installation
MOUNTING THE SAFETY REVERSING SENSORS
1. Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor.
2. Use wing nuts to fasten safety reversing sensors to brackets, with lenses pointing
toward each other across the door. Be sure the lens is not obstructed by a bracket
extension.
3. Finger tighten the wing nuts.
Wing Nut

WIRE THE SAFETY REVERSING SENSORS

1. Run the wire from both sensors to the garage door opener. Attach the wire to the
wall and ceiling with the staples.
2. Strip 7/16 inch (11 mm) of insulation from each set of wires. Separate the wires.
Twist the white wires together. Twist the white/black wires together.
3. Insert the white wires into the white terminal on the garage door opener. Insert the
white/black wires into the grey terminal on the garage door opener. To insert or
remove the wires from the terminal, push in the tab with a screwdriver tip.
7/16
(11 mm)
WHT/
WHT BLK
Carriage Bolt
Bell wire
15
HARDWARE
Carriage Bolt
1/4"-20x1/2" (2)
Wing Nut
1/4"-20 (2)