ADJUSTMENT STEP 2

Adjust the Force

Force adjustment controls are located on the right side panel of the motor unit. Force adjustment settings regulate the amount of power required to open and close the door.

If the forces are set too light, door travel may be interrupted by nuisance reversals in the down direction and stops in the up direction. Weather conditions can affect the door movement, so occasional adjustment may 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 controls with a screwdriver.

NOTE: If anything interferes with the door’s upward travel, it will stop. If anything interferes with the door’s downward travel (including binding or unbalanced doors), it will reverse.

W ARN ING

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or 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) is adjusted, the other control may also need adjustment.

•After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with one-inch high object (or 2x4 laid flat) on floor.

HOW AND WHEN TO ADJUST THE FORCES

1. Test the DOWN (close) force

Force Adjustment Controls

•Grasp the door bottom when the door is about halfway through DOWN (close) travel. The door

should reverse. Reversal halfway through down travel does not guarantee reversal on a one-inch obstruction. See Adjustment Step 3, page 26.

1

9 1

93

7

3

5

7

 

5

KG

KG

 

If the door is hard to hold or doesn't reverse,

DECREASE the DOWN (close) force by turning

the control counterclockwise. Make small

Right Panel

 

adjustments until the door reverses normally. After

 

each adjustment, run the opener through a

 

complete cycle.

Antenna

•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 completes a close cycle. After each

 

 

 

 

 

adjustment, run the opener through a complete

 

 

 

 

 

travel cycle.

Do not increase the force beyond the

 

 

 

 

 

minimum amount required to close the door.

 

FORCE ADJUSTMENT LABEL

 

2. Test the UP (open) force

 

9

1

9

1

• Grasp the door bottom when the door is about

 

 

 

 

 

 

halfway through UP (open) travel. The door should

 

7

3

7

3

stop. If the door is hard to hold or doesn't stop,

 

5

 

5

 

 

 

 

 

 

DECREASE UP (open) force by turning the control

 

KG

 

KG

 

counterclockwise. Make small adjustments

until the

 

 

 

 

Open Force

 

Close Force

 

 

 

 

 

 

door stops easily and opens fully. After each adjustment, run the opener through a complete travel cycle.

•If the door doesn’t open at least 5 feet, INCREASE UP (open) force by turning 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.

25