ADJUSTMENT STEP 2
Adjust the Force
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 25.
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.
24
Force
Adjustment
Controls
Back Panel
FORCE ADJUSTMENT LABEL
KG
KG
1
3
9
7
5
1
3
9
7
5
KG
KG
Antenna
Open Force
Close Force
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"
high (3.8 cm) object (or 2x4 laid flat) on floor.
