Chamberlain 8355W Manual page 23

Install the Protector System
1 Install the Safety Reversing Sensors
HARDWARE
Carriage Bolt
1/4"-20 x 1/2"
The safety reversing sensors can be attached to the door track, the wall, or the floor. If the door track
will not support the sensor bracket a wall installation is recommended. Choose one of the following
installations.
OPTION A - DOOR TRACK INSTALLATION
1. Slide the curved arms of the sensor bracket around the edge of the door track. Snap into
place so that the sensor bracket is flush against the track.
2. Slide the carriage bolt into the slot on each sensor.
3. Insert the bolt through the hole in the sensor bracket and attach with the wing nut. The lenses
on both sensors should point toward each other. Make sure the lens is not obstructed by the
sensor bracket.
2
1
No more
than 6"
(15 cm) Carriage Bolt
1/4"-20 x 1/2"
®
Wing Nut
1/4"-20
3
Wing Nut
1/4"-20
OPTION B - WALL INSTALLATION
If additional clearance is needed an extension bracket (not provided) or wood blocks can be used.
Make sure each bracket has the same amount of clearance so they will align correctly.
1. Position the sensor bracket against the wall with the curved arms facing the door. Make sure
there is enough clearance for the beam to be unobstructed. Mark holes.
2. Drill 3/16" pilot holes for each sensor bracket and attach the sensor brackets to the wall using
lag screws (not provided).
3. Slide the carriage bolt into the slot on each sensor.
4. Insert the bolt through the hole in the sensor bracket and attach with the wing nut. The lenses
on both sensors should point toward each other. Make sure the lens is not obstructed by the
sensor bracket.
1
(Not provided)
No more than
6" (15 cm)
3
Carriage Bolt
Lens 1/4"-20 x 1/2"
23
2
(Not provided)
4
Wing Nut
1/4"-20