Chamberlain CG40DM 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).

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 15.
	Header Wall		Rail
				Slack in chain tension
				is normal when garage			Motor Unit
				door is closed.
				Wall-mounted
				Door Control
				Access
				Door
							CLOSED POSITION
				Trolley Stop Bolt					Chain	Trolley
				Header Bracket				Rail
		Safety Reversing Sensor
		Gap between floor and bottom of		Door Bracket
Safety Reversing Sensor		door must not exceed 1/4" (6 mm).								Emergency
											Release
						Straight			Curved
											Rope &
						Door Arm
									Door Arm		Handle
				Header
ONE-PIECE DOOR WITH TRACK						Garage Door
				Wall
				CLOSED POSITION
				Trolley Stop Bolt		Cable				Chain
										Chain
		Access	Header		Curved
		Door	Wall	Header						Rail
				Bracket	Door Arm
				Door		Straight				Emergency
				Bracket		Door Arm				Release
				Garage						Rope &
		Safety Reversing Sensor		Door						Handle
	Gap between floor and bottom of
Safety Reversing	door must not exceed 1/4" (6 mm).
Sensor

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