User's Manual

Adjustments

Step 2 Adjust the Force

Withouta properly installed safety reversal system, persons(particularlysmall children) could be

SERIOUSLY INJUREDor KILLED by a closing garage door.

• Too much force on garage door will interfere with proper operation of safety reversal system.

• NEVER increase force beyond minimum amount required to close garage door.

• NEVER use force adjustments to compensate for a binding or sticking garage door.

• If one control (force or travel limits) isadjusted,the other control may also need adjustment.

• After ANY adjustments are made, the safety reversal system MUST be tested. Door MUSTreverse on

contact with 1-1/2" high (3.8 cm) object (or 2x4 laid flat) on floor.

Force adjustmentcontrols are located on the back panel of the motor unit. Force adjustmentsettings

regulate the amount of power required to open and close the door.

If the forcesare set too light, door travel may be interrupted bynuisance reversalsin the down direction

and stops in the up direction. Weather conditions can affectthe door movement,so occasional

adjustmentmay be needed.

The maximum force adjustment range is about 3/4 of a complete turn. Do not force controls beyond

that point.

Turn force adjustment controlswith a screwdriver.

NOTE: If anything interferes with the door’s upward travel, it will stop.Ifanything interferes with the door’s

downward travel (including binding or unbalanced doors), it will reverse.

HOW AND WHEN TO ADJUST THE FORCES

1. Test the DOWN (close) force

Grasp the door bottomwhen the door is about halfway through DOWN (close) travel.The door

should reverse.Reversal halfwaythrough down travel doesnot guarantee reversal on a 1-

1/2" (3.8 cm) obstruction.See Adjustment Step 3,page 30. If the door is hard to hold or

doesn’t reverse, DECREASE the DOWN(close) force by turning the control

counterclockwise. Make small adjustmentsuntil the door reversesnormally.After each

adjustment, run the opener through a complete cycle.

If the door reverses during the down (close) cycle and the opener lights aren’t flashing,

INCREASE DOWN (close) force by turning the control clockwise. Make small adjustments until

the door completesa close cycle.After each adjustment, run the opener through a complete

travel cycle.Do notincrease the force beyond the minimum amount required to close the door.

2. Test the UP (open) force

Grasp the door bottomwhen the door is about halfway through UP (open) travel.The door

should stop. If the door is hard to hold or doesn’t stop,DECREASE UP (open) force by

turning the control counterclockwise.Make small adjustments until the door stopseasilyand

opensfully. After each adjustment, run the opener through a complete travel cycle.

If the door doesn’t open at least 5 feet (1.5 m), INCREASE UP (open) force byturning the

control clockwise. Make small adjustments until door opens completely. Readjust the UP limit if

necessary.After each adjustment, run the opener through a complete travel cycle.

Back Panel

Antenna

Open Force

Close Force

Force Adjustment Screws