Adjustment

STEP 1 Adjust UP and DOWN Limits

LIMIT ADJUSTMENT settings regulate the points at which the door will stop when moving up or down.

NOTE: Door STOPS in the UP direction if anything interferes with door travel. Door REVERSES in the DOWN direction if anything interferes with the door travel (including binding or unbalanced doors).

PROCEDURE: To operate opener, press wall push button. Run the opener through a COMPLETE TRAVEL CYCLE. Limi adjustments are not necessary when the door opens and closes completely and doesn't reverse unintentionally in the fully closed position.

Adjustment Label

Left Side

Limit

Panel

Adjustment

 

Screws

The following chart outlines adjustment procedures. Run the opener through a COMPLETE TRAVEL CYCLE AFTER EACH ADJUSTMENT. NOTE: REPEATED OPERATION OF THE OPENER DURING ADJUSTMENT PROCEDURES MAY CAUSE MOTOR TO OVERHEAT AND SHUT OFF. SIMPLY WAIT 15 MINUTES AND TRY AGAIN. Read chart carefully before proceeding to Step 2. Use a

screwdriver to make limit adjustments.

LIMIT ADJUSTMENT CHART
IF DOOR DOES NOT OPEN COMPLETELY
BUT IT OPENS AT LEAST FIVE FEET

Increase UP travel. Turn the UP LIMIT adjustment screw clockwise. One turn equals 2" of travel.

If door does not open at least 5 feet: adjust OPEN FORCE as

explained in Step 2.

IF SECTIONAL DOOR DOES NOT CLOSE COMPLETELY

Increase DOWN travel. Turn down limit adjustment screw counterclockwise. One turn equals 2" of travel.

If the door still will not close completely, the header bracket is positioned too high. Repeat Step 1, page 7.

IF ONE-PIECE DOOR DOES NOT CLOSE COMPLETELY

Increase DOWN travel. Turn down limit adjustment screw COUNTERCLOCKWISE One turn equals 2 inches of travel.

IF OPENER REVERSES IN FULLY CLOSED POSITION

Decrease DOWN travel. Turn down limit adjustment screw clockwise. One turn equals 2" of travel.

IF DOOR REVERSES WHEN CLOSING AND THERE
IS NO INTERFERENCE TO TRAVEL CYCLE

Test door for binding: Pull emergency release handle. Manually open and close door. If door is binding, call a door serviceman. If door is not binding or unbalanced, adjust CLOSE FORCE. See Step 2.

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