Install The Safety Reversing Sensor - Chamberlain M150 1/2 HP Owner's Manual

Installation Step 4

Install the Safety Reversing Sensor

(Receiving and Sending Eyes)
Figures 1, 2 and 3 show recommended assembly of
bracket(s) and "C" wrap based on the wall installation of
the sensors on each side of the garage door as shown on
page 12, or on the garage door tracks themselves.
Figures 4 and 5 are variations which may fit your
installation requirements better. Make sure the wraps
and brackets are aligned so the sensors will face each
other across the garage door.
Garage Wall or Door Track Installation Procedure
1. Fasten the "C" wraps to the mounting brackets having
square holes, using the hardware shown in Figure 1.
Garage Wall Installation Procedure
2. Connect each assembly to a slotted bracket, using the
hardware shown in Figure 2. Note alignment of
brackets for left and right sides of the door.
3. Finger tighten the lock nuts.
4. Use bracket mounting holes as a template to locate and
drill (2) 3/16" diameter pilot holes on both sides of the
garage door, 4"-6" above the floor but not exceeding
6" (see warning on page 12).
5. Attach bracket assemblies with #14-10x1-1/2" lag
screws as shown in Figure 2.
6. Adjust right and left side bracket assemblies to the
same distance out from mounting surface. Make sure
all door hardware obstructions are cleared. Tighten the
nuts securely.
Garage Door Track Installation Procedure
Discard slotted bracket. Drill 3/8" holes in each track and
fasten securely with hardware as shown in Figure 3.
#10x32
#10-32x3/8"
Lock Nut
Screw
Figure 4
Alternate Wall Mount
Inside
Garage
Wall
Garage
Floor
Hardware Shown Actual Size
#14-10x1-1/2" HH
Lag Screw
Mounting Bracket
with Slot
Mounting Bracket
with Square Holes
"C" Wrap
Sensor
with wire
Indicator Light
Figure 1
Garage WALL or DOOR TRACK Installation
Mounting Bracket
With Square Holes
#10 - 32
Lock Nuts
Figure 2
Garage WALL Installation
#14-10 x 1-1/2" HH
Inside
Garage
Wall
Mounting Bracket
1/4" - 20
Lock Nuts
Figure 3
Garage DOOR Track Installation
Garage
Door Track
Drill 3/8"
Holes
1/4-20 x 1/2"
Carriage Bolts
Staples
Figure 5
Inside
Garage
Wall
"C" Wrap
Garage
Floor
13
"C" Wrap
#10-32x3/8"
Screws
1/4-20 x 1/2" Carriage Bolts
(with square shoulder)
Lag Screws
"C" Wrap
with Slot
Mounting Bracket
with Square Holes
1/4 " Lock Nuts
Inside
Mounting Bracket
Garage
with Square Holes
Wall
"C" Shaped
Wrap
1/4"-20x1/2" 1/4"-20
Carriage Bolts Lock Nut
Alternate Floor Mount
Sensor with wire
Indicator Light
Mounting Bracket
with Square Holes
Mounting Bracket
with Slot
Attach with
concrete anchors
(not provided)