LiftMaster DDO8900W Manual Del Usuario página 14

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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 door operator. Attach the wire to the wall and
ceiling with the staples.
2.
Strip 7/16" (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 door operator. Insert the white/
black wires into the grey terminal on the door operator. To insert or remove the
wires from the terminal, push in the tab with a screwdriver tip.
7/16
(11 mm)
1
2
3
4
5
6
7
8
9 10 11 12 13
WHT/
BLK
WHT
Carriage Bolt
Bell wire
NOTE: The door referenced in this image depicts
standard or high lift applications. If mounting
this on a vertical lift door, your door will look
different.
14
HARDWARE
Carriage Bolt
1/4"-20x1/2" (2)
Wing Nut
1/4"-20 (2)

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