Chamberlain 1000SD, 2000SD Test, door, completed, Adjustment, •Repeat the test, in the down direction, Important Safety Check, Test the Safety Reverse System, If the, Place a

Adjustment Step 3

Test The Protector System	®

•Press the remote control push button to open the door.•Place the opener carton in the path of the door.

•Press the remote control push button to close the door. The door will not move more than an inch, and the opener light will flash for 5 seconds.

Professional service	is required if the opener closes the
door when the safety	reversing sensor is obstructed.
The garage door opener will not close from a remote if
the indicator light in either sensor is		off (alerting you
to the fact that the sensor is misaligned or obstructed).
The garage door can be closed by pressing and		holding
the Door Control push bar or button until down travel is
completed.

W ARN ING

Without a properly working safety reversing sensor, persons (particularly children) could be seriously injured or killed if trapped by a closing garage door. Repeat this test once a month.

Safety Reversing Sensor

Adjustment Step 4

Test the Safety Reverse SystemTest

•Place a one-inch board (or a 2x4 laid flat) on the floor, centered under the garage door.

• Operate the door in the down direction.				The door must
reverse on striking the obstruction.
			Adjustment
If the	door	stops	on the obstruction, it is not traveling far
enough	in the down direction.

•Increase the DOWN limit by turning the DOWN limit adjustment screw counterclockwise 1/4 turn.

•Repeat the test.

On a sectional door, make sure limit adjustments do not force the door arm beyond a straight up and down position. See the illustration on page 22.

•When the door reverses on the one-inch board, remove the obstruction and run the opener through 3 or 4 complete travel cycles to test adjustment.

If the door will not reverse after repeated adjustment attempts, call for professional garage door service.

Important Safety CheckRepeat Adjustment Steps 1-4 after:•Each adjustment of door arm length, force controls or limit controls.

•Any repair to or adjustment of the garage door (including springs and hardware).

•Any repair to or buckling of the garage floor.•Any repair to or adjustment of the opener.

W ARN ING

Failure to test and adjust the safety reverse system may result in serious injury or death to persons trapped by a closing garage door. Repeat this test once a month and adjust as needed.

One-Inch board (or a 2x4 laid flat)