Chamberlain 4620, 4620-2 Install the Safety Reversing Sensor (Receiving and Sending Eyes), Figure, Figure, Figure, Wall installation:, Floor installation:, INSTALLING THE BRACKETS

Installation Step 4

Install the Safety Reversing Sensor (Receiving and Sending Eyes)

INSTALLING THE BRACKETS

Be sure power to the opener is disconnected. Install and align the brackets so the sensors will face each other across the garage door, with the beam from 4 – 6" above the floor.

They may be installed in one of three ways, as follows.

Garage door track installation (preferred):

•Slip the curved arms over the rounded edge of each door track, with the curved arms facing the door. Snap into place against the side of the track. It should lie flush, with the lip hugging the back edge of the track, as shown in Figure 1.

If your door track will not support the bracket securely, wall installation is recommended.

Wall installation:

•Place the bracket against the wall with curved arms facing the door. Be sure there is enough clearance for the sensor beam to be unobstructed.

•If additional depth is needed, an extension bracket (see Accessories) or wood blocks can be used.

•Use bracket mounting holes as a template to locate and drill (2) 3/16" diameter pilot holes on the wall at each side of the door, from 4–6" above the floor. (See Warning on page 16.)

•Attach brackets to wall with lag screws (not provided).

•If using extension brackets or wood blocks, adjust right and left assemblies to the same distance out from the mounting surface. Make sure all door hardware obstructions are cleared.

Floor installation:

• Use wood blocks or extension brackets (see

Accessories) to elevate sensor brackets so the lenses

Figure 1 DOOR TRACK MOUNT (Right Side)

Door

Track

Lip

Indicator light

Sensor
Bracket	Lens

Figure 2 WALL MOUNT (Right Side)

Inside	Optional
	Extension
Garage
	Bracket
Wall
	(See Accessories)
	(Provided with
	Extension
	Bracket)

Sensor

Bracket

(Provided with		Indicator
	Lens	light

Extension Bracket)

Figure 3 FLOOR MOUNT (Right Side)

will be 4-6" above the floor.

• Carefully measure and place right and left assemblies at

the same distance out from the wall. Be sure all door

hardware obstructions are cleared.

• Fasten to the floor with concrete anchors as shown.

Lens

Sensor

Bracket

(Provided with
Extension	Inside
Bracket)
	Garage
	Wall

Indicator light

(Provided with

Extension Bracket)

Attach with concrete anchors (not provided)

Optional

Extension

Bracket

(See Accessories)

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