Chamberlain 3265M-267 1/2 HP Planning, ONE-PIECEDOOR WITH TRACK, ONE-PIECEDOOR WITHOUT TRACK

Planning

Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to your installation. Additional materials may be required.

You may find it helpful to refer back to this page and the accompanying illustrations as you proceed with the installation of your opener.

SECTIONAL DOOR INSTALLATION FINISHED CEILING

Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, steel, aluminum, door with glass panels, etc.). See page 19 for details.

Header Wall

—	Vertical Centerline
— —
	of Garage Door

Support bracket & fastening hardware is required. See page 11.

Slack in chain tension is normal when garage door is closed.

Extension Spring

OR

Torsion Spring

Access Door

Motor Unit

Wall-mounted

Door Control

— — —
	Safety Reversing Sensor
— —
	Gap between floor and bottom of
Safety Reversing Sensor	door must not exceed 1/4" (6 mm).

ONE-PIECE DOOR WITHOUT TRACK		FINISHED CEILING
		Support bracket &
		fastening hardware is	Motor Unit
		required. See page 11.
	Slack in chain tension
	is normal when garage
Header Wall	door is closed.
	Wall-	ONE-PIECE DOOR WITH TRACK
	mounted		Slack in chain tension is normal
	Door
			when garage door is closed.
	Control
	Access
	Door
			Access
			Door
	Safety Reversing Sensor
Gap between floor and bottom of door
Safety Reversing must not exceed 1/4" (6 mm)			Safety Reversing Sensor
Sensor			Gap between floor and bottom of
		Safety Reversing door must not exceed 1/4" (6 mm)
		Sensor

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