Craftsman 139.53225SRT1 Owner's Manual download pdf (Page 22)

1/4x1-1/2"

Lag Screw

#10-32x3/8"

Screw

1/4"-20

Lock Nut

#10x32

Lock Nut

Staples

1/4"-20x1/2"

Carriage Bolts

Installation Step 10

Install the Safety Reversing Sensor

Mounting Bracket

With Square Holes

#10-32x3/8"

Screws

"C" Wrap

#10-32

Lock Nuts

Mounting Bracket

with Slot

1/4"-20

Lock Nuts

1/4x1-1/2"

Lag Screws

1/4-20x1/2" Carriage Bolts

(with square shoulder)

Inside

Garage

Wall

"C" Wrap

Mounting Bracket

with Square Holes

Figures 2 and 3 show assembly of brackets and

"C" wrap based on the recommended installation of

the sensors as shown on page 21.

However, 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.

• Fasten the "C" wraps to the mounting brackets

having square holes, using the hardware shown

in Figure 2.

• Connect each assembly to a slotted bracket, using

the hardware shown in Figure 3.

Note the alignment of the 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 21.)

• Attach bracket assemblies with 1/4"x1-1/2" lag

screws as shown in Figure 3.

• Adjust right and left side bracket assemblies to the

same distance out from the mounting surface.

Make sure all door hardware obstructions are

cleared. Tighten the nuts securely.

"C" Wrap

Inside

Garage

Wall

Mounting Bracket

with Square Holes

Garage

Floor

Mounting Bracket

with Slot

Alternate Wall Mount

Sensor

Inside

Garage

Wall

Alternate Floor Mount

Mounting Bracket

with Slot

Mounting Bracket

with Square Holes

"C" Wrap

Sensor

Garage

Floor

Indicator Light

Attach with

concrete anchors

(not provided)

Hardware Shown Actual Size

Figure 2

Figure 4

Figure 5

Figure 3

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Craftsman 139.53225SRT1 Owner's Manual Page 22

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