Install The Safety Reversing Sensor - Chamberlain Lift-Master Professional 1270 Owner's Manual

Installation Step 10

Install the Safety Reversing Sensor

(Receiving and Sending Eyes)
Figures 2, 3 and 4 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 17, or on the garage
door tracks themselves.
Figures 5 and 6 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
• Fasten the "C" wraps to the mounting brackets
having square holes, using the hardware shown in 2.
Garage Wall Installation Procedure
• Connect each assembly to a slotted bracket, using
the hardware shown in 3. Note alignment of
brackets for left and right sides of the door.
• Finger tighten the lock nuts.
• 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 17.)
• Attach bracket assemblies with 1/4"x1-1/2" lag
screws as shown in 3.
• 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 4.
#10 x 32
#10 - 32 x 3/8"
Screw Lock Nut
Figure 5
Alternate Wall Mount
Inside
Garage
Wall
Garage
Floor
Hardware Shown Actual Size
1/4 x 1-1/2"
Lag Screw
Mounting Bracket
with Slot
Mounting Bracket
with Square Holes
"C" Wrap
Sensor
Indicator Light
Figure 2
Garage WALL or DOOR TRACK Installation
Mounting Bracket
With Square Holes
#10 - 32
Lock Nuts
Figure 3
Garage WALL Installation
Inside
Garage
Wall
Mounting Bracket
1/4" - 20
Lock Nuts
Figure 4
Garage DOOR Track Installation
Garage
Door Track
Drill 3/8"
Holes
1/4-20 x 1/2"
Carriage Bolts
Staples
Figure 6
Alternate Floor Mount
Inside
Garage
Wall
"C" Wrap
18
"C" Wrap
#10-32x3/8"
Screws
1/4 x 1-1/2"
1/4-20 x 1/2" Carriage Bolts
Lag Screws
(with square shoulder)
"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" - 20 x 1/2" 1/4" - 20
Carriage Bolts Lock Nut
Indicator Light
Sensor
Mounting Bracket
with Square Holes
Mounting Bracket
with Slot
Attach with
concrete anchors
(not provided)
Garage
Floor