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ADJUSTMENT STEP 2

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 1-1/2"
(3.8 cm) high object (or 2 x 4 laid flat) on floor.

ADJUST THE FORCES

Force adjustment controls are located on the back 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.

HOW AND WHEN TO ADJUST THE FORCES

1. Test the DOWN (close) force

• 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 1-1/2

(3.8 cm) obstruction. See

Adjustment Step 3, page 22

If the door is hard to

hold or doesn’t reverse

, decrease the DOWN (close)

force by turning the control counterclockwise. Make
small adjustments until the door reverses normally. 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 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.

2. Test the UP (open) force

• Grasp the door bottom when 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 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 (1.5 m)

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.

Back Side Panel

Force Adjustment
Controls

FORCE ADJUSTMENT LABEL