Chamberlain CG40CD 1/2 HP, CG42CD 1/2 HP Planning (Continued), ONE-PIECEDOOR WITH TRACK, ONE-PIECEDOOR INSTALLATIONS, ONE-PIECEDOOR WITHOUT TRACK

Planning (Continued)

ONE-PIECE DOOR INSTALLATIONS

•Generally, a one-piece door does not require reinforcement. If your door is lightweight, refer to the information relating to sectional doors in Installation Step 11.

•Depending on your door’s construction, you may need additional mounting hardware for the door bracket (Step 11).

WARNING

Without a properly working safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

•The gap between the bottom of the garage door and the floor MUST NOT exceed 1/4" (6 mm). Otherwise, the safety reversal system may not work properly.

•The floor or the garage door MUST be repaired to eliminate the gap.

ONE-PIECE DOOR WITHOUT TRACK

FINISHED CEILING

Support bracket

&fastening hardware is required.

	See page 16.
Header Wall	Rail
	Slack in chain tension
	is normal when garage	Motor Unit
	door is closed.
	Wall-mounted
	Door Control
	Access	CLOSED POSITION
	Door
		Trolley Stop Bolt		Cable	Trolley
		Header
		Bracket	Rail
		Door Bracket
	Safety Reversing				Emergency
Gap between floor	Sensor
					Release
		Straight
and bottom of door must not exceed 1/4" (6 mm).				Curved	Rope & Handle
Safety Reversing Sensor		Door		Door
	Header	Arm		Arm
	Wall	Garage Door

ONE-PIECE DOOR WITH TRACK

Safety

Reversing Sensor

Access

Door

Safety

Reversing

Gap between floor Sensor and bottom of door

must not exceed 1/4" (6 mm).

	CLOSED POSITION
	Trolley Stop Bolt	Cable	Chain
Header
Wall	Header	Curved
			Rail
	Bracket	Door Arm
	Door		Emergency
		Straight	Release
	Bracket
			Rope &
		Door
			Handle
	Garage	Arm
	Door

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