Chamberlain CG40 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". 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

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

Header

Wall

FINISHED CEILING Support bracket & fastening hardware is required. See page 17.

Motor Unit

Safety Reversing

Gap between floor and bottom of door

Wall- mounted Door Control

Access		Cable	CLOSED POSITION
		Pulley Bracket
Door			Cable
					Trolley
						Chain
		Header
		Bracket	T-rail
		Door
		Bracket				Emergency
			Straight	Curved		Release
						Rope
			Door	Door		& Handle
Safety		Garage	Arm
	Header			Arm
Reversing Sensor
		Door
	Wall

Sensor

must not exceed 1/4"

ONE-PIECE DOOR WITH TRACK

			CLOSED POSITION
		Cable		Cable	Trolley	Chain
	Header	Pulley Bracket
	Wall
Access		Header	Curved
Door						T-rail
		Bracket	Door Arm

Door

GarageBracket Straight

Door

Safety

Reversing Sensor

Gap between floor and bottom of door must not exceed 1/4"

Door

Safety

Reversing

Sensor

Arm

Emergency Release

Rope & Handle

5