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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.
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.
17
Adjustment Label
Left Side
Panel
Limit
Adjustment
Screws