Chamberlain 3800PLD Figure, Figure, Figure, Figure, INSTALLING THE BRACKETS, Floor installation (Figure 4):, Wall installation (Figure 2 and 3):

INSTALLING THE BRACKETSBe sure power to the opener is disconnected. Install

and align the brackets so the safety reversing sensors will face each other across the garage door, with the beam no higher than 6" (15 cm) above the floor. They may be installed in one of three ways,as follows.

Garage door track installation (preferred) (Figure 1):

•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.

Figure 1 DOOR TRACK MOUNT (RIGHT SIDE)

Door

Track

Lip

Indicator

Light

Sensor
Bracket	Lens

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

Wall installation (Figure 2 and 3):

• 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, no higher than 6" (15 cm) above the

floor.

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

Figure 2

Inside

Garagel

Wal

WALL MOUNT (RIGHT SIDE)

Fasten Wood Block to Wall with Lag Screws (Not Provided)

Indicator

Light Sensor

Bracket

Lag Screws

(Not Provided)

Lens

• 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 (Figure 4):

•Use wood blocks or extension brackets

(see Accessories) to elevate sensor brackets so the lenses will be no higher than 6" (15 cm) 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.

HARDWARE SHOWN ACTUAL SIZE

Carriage Bolt	Wing Nut	Staples
1/4"-20x1/2"	1/4"-20

Figure 3		WALL MOUNT (RIGHT SIDE)
	Inside	Extension
	Garage
	Wall	Bracket
		(See Accessories)
		(Provided with
		Extension Bracket)

(Provided with	Sensor
	Bracket
Extension
Bracket)	Indicator
	Lens Light
Figure 4	FLOOR MOUNT (RIGHT SIDE)

Inside		Attach with
		Concrete Anchors
arage		(Not Provided)
G	l
	al
W
		Lens
		Indicator
		Light
		Sensor
		Bracket

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