Chamberlain 120ad To Open the Door Manually, Care of Your Opener, Once a Month, Twice a Year

To Open the Door Manually

WARNING

•To prevent possible SERIOUS INJURY or DEATH from a falling garage door:

–If possible, use emergency release handle to disengage trolley ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could result in an open door falling rapidly and/or unexpectedly.

–NEVER use emergency release handle unless garage doorway is clear of persons and obstructions.

•NEVER use handle to pull door open or closed. If rope knot becomes untied, you could fall.

DISCONNECT THE TROLLEY:

Care of Your Opener
LIMIT AND FORCE ADJUSTMENTS:
Weather conditions may		Limit Controls
cause some minor changes in
door operation requiring some
re-adjustments, particularly
during the first year of
			Adjustment Label
operation.
	(Located on the left side panel)

Pages 25 and 26 refer to the limit and force adjustments.

Repeat the safety reverse test (Adjustment

Step 3, page 27) after any adjustment of limits or force.

MAINTENANCE SCHEDULE

Once a Month

The door should be fully closed if possible. Pull down on the emergency release handle (so that the trolley release arm snaps into a vertical position) and lift the door manually. The lockout feature prevents the trolley from reconnecting automatically, and the door can be raised and lowered manually as often as necessary.

	Trolley
	Release
Emergency ￿	Arm
Release
Handle ￿	NOTI
	CE
(Pull Down)

Lockout position (Manual disconnect)

•Manually operate door. If it is unbalanced or binding, call for professional garage door service.

•Check to be sure door opens & closes fully. Adjust limits and/or force if necessary. (See pages 25 and 26.)

•Repeat the safety reverse test. Make any necessary adjustments. (See Adjustment Step 3.)

Twice a Year

•Check chain tension. Disconnect trolley first. Adjust if necessary (see page 11).

Once a Year

• Oil door rollers, bearings and hinges. The opener

does not require additional lubrication. Do not

grease the door tracks.

TO RE-CONNECT THE TROLLEY:

• Lubricate the chain.

Pull the emergency release handle toward the opener at a 45° degree angle so that the trolley release arm is horizontal. The trolley will reconnect on the next UP or DOWN operation, either manually or by using the door control or remote.

Trolley

Release

Arm

Emergency
Release Handle
(Pull Down & Back	NO
	TICE
Towards Opener)

THE REMOTE CONTROL BATTERY

The lithium battery should produce power for up to 5 years. To replace battery, use the visor clip or screwdriver blade to pry open the case. Insert battery positive side up.

Dispose of old battery properly.

WARNING

To reconnect

To prevent possible SERIOUS INJURY or DEATH:

•NEVER allow small children near batteries.

•If battery is swallowed, immediately notify doctor.

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