Chamberlain 1270LMC Install the Safety Reversing Sensor

Installation Step 10

Figure 2

Garage WALL or DOOR TRACK Installation

Install the Safety Reversing Sensor

Figures 2, 3 and 4 show recommended assembly of bracket(s) and "C" wrap based on the wall install ation of the sensors on each side of the garage door as shown on page 17, or on the garage door tracks themselves.

Mounting Bracket

With Square Holes

#10-32

Lock Nuts

"C" Wrap

#10-32x3/8"

Screws

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.

For Garage Wall or Door Track Installation

•Fasten the "C" wraps to the mounting brackets having square holes, using the hardware shown in Figure 2.

For Door Track Installation Only

•Discard slotted bracket. Drill 3/8" holes in each track and fasten securely with hardware as shown in Figure 3.

For Wall Installation

•Connect each assembly to a slotted bracket, using the hardware shown in Figure 4. 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 Figure 4.

•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.

Figure 5 Alternate Wall Mount

Inside

Garage

Wall

Mounting Bracket

with Slot

Mounting Bracket with Square Holes

"C" Wrap

Sensor

Indicator Light

Garage

Floor

Figure 3 Garage DOOR Track Installation

	Inside	1/4"-20 Lock Nuts
Garage		Mounting Bracket
	Garage
Door Track		with Square Holes
	Wall

Drill 3/8"

Holes

"C" Wrap

1/4"-20x1/2"

Carriage Bolts

Figure 4 Garage WALL Installation

1/4x1-1/2"	1/4-20x1/2" Carriage Bolts
Lag Screws	(with square shoulder)

Inside

Garage

Wall

Mounting Bracket		"C" Wrap
with Slot	Mounting Bracket
1/4"-20	with Square Holes
Lock Nuts

Figure 6	Alternate Floor Mount
	Inside	Indicator
	Garage
	Wall	Light
		Sensor
		Mounting Bracket
		with Square Holes
		Mounting Bracket
	"C" Wrap	with Slot
		Attach with
		concrete anchors
		(not provided)
		Garage
		Floor

Hardware Shown Actual Size

#10-32x3/8"	#10x32	1/4x1-1/2"		1/4"-20x1/2"	1/4"-20
Screw	Lock Nut	Lag Screw	Staples	Carriage Bolts	Lock Nut

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