Craftsman 139.53515SR - I/2HP owner manual Test Safety Reverse System, Repeat Adjustment After

Adjustment

STEP 3 Test Safety Reverse System

THE SAFETY REVERSE SYSTEM TEST IS IMPORTANT. GARAGE DOOR MUST REVERSE ON CONTACT WITH A ONE INCH OBSTACLE PLACED ON THE FLOOR. FAILURE TO PROPERLY ADJUST OPENER MAY

RESULT IN SERIOUS PERSONAL INJURY FROM A CLOSING GARAGE DOOR. REPEAT TEST AT LEAST FOUR TIMES A YEAR AND ADJUST AS NEEDED.

PROCEDURE: Place a 1-inch obstacle on the floor under

the garage door. Operate door in DOWN direction. The dOor MUST reverse on the obstruction.

If the door STOPS on the obstruction, it is not traveling far enough in the DOWN direction. Increase the DOWN

limit by turning DOWN limit adjustment screw counter- clockwise 1/4 turn. REPEAT TEST.

NOTE: Make sure limit adjustments do not force the

door arm beyond a straight up and down position. SeeSECTIONAL DOOR the illustration on Page 16,

When the door reverses on the 1-inch obstacle, remove the obstruction and run the opener through a complete travel cycle. Door MUST NOT reverse in closed position. If it does, repeat Adjustment Steps 1, 2 and 3.

ONE-PIECE DOOR

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1 Inch Obstrucl_otl

REPEAT ADJUSTMENT STEP 3 AFTER:

•EACH ADJUSTMENT OF DOOR ARM LENGTH, CLOSE FORCE OR DOWN LIMIT.

•ANY REPAIR OR ADJUSTMENT OF GARAGE DOOR (INCLUDING SPRINGS AND HARDWARE).

•ANY REPAIR OR SUCKLING OF THE GARAGE FLOOR.

•ANY REPAIR OR ADJUSTMENT OF THE GARAGE DOOR OPENER.

(Optional) STEP 4 Instafl Infrared Reversing Sensor

The INFRARED REVERSING SENSOR provides an

ADDITIONAL measure of safety against a small child being caught under a garage door. It uses an invisible beam which, when broken by an obstruction, causes a closing door to open and prevents an open door from closing.

After the garage door opener has been completely installed and adjusted, the INFRARED REVERSING SENSOR accessory can he installed. Instructions are included with this optional device.

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