Safety Reverse Test - Sears 39.18205SR - 1/2 HP Owner's Manual

ADJUSTMENT STEP 3
Test Safety Reverse System
PROCEDURE: Place a one-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 counterclockwise 1/4 turn. REPEAT TEST.
NOTE: Make sure limit adjustments do not force
the door arm beyond a straight up and down
position. See the illustration on Page 18.
When the door reverses on the one-inch obstacle,
remove the obstruction and run the opener through 3
or 4 complete travel cycles to test the adjustment.
Door MUST NOT reverse in closed position. Repeat
Adjustment Steps 1, 2 and 3 if necessary.
ONE-PIECE DOOR
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 BUCKLING OF THE GARAGE FLOOR.
• ANY REPAIR OR ADJUSTMENT OF THE GARAGE DOOR OPENER.
1 Inch Obstruction
THE SAFETY REVERSE SYSTEM TEST
IS IMPORTANT. GARAGE DOOR MUST
REVERSE ON CONTACT WITH 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
ONCE A MONTH AND ADJUST AS NEEDED.
SECTIONAL DOOR
22
1 Inch Obstruction