28
ADJUSTMENT STEP 2
Adjust the Force
Force adjustment controls are located on the right
panel of the motor unit. Force adjustment settings
regulate the amount of po
w
er required to open and
close the door.
If the forces are set too light, door tra
v
el may be
interrupted by nuisance re
v
ersals in the do
w
n
direction and stops in the up direction.
W
eather
conditions can affect the door mo
v
ement, so
occasional adjustment may be needed.
The maximum force adjustment ran
g
e is about
3/4 of a complete turn. Do not force controls
beyond that point.
Turn force adjustment controls
w
ith a scre
w
dri
v
er.
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
w
hen the door is about
half
w
ay through DO
WN
(close) tra
v
el. The door
should re
v
erse.
Reversal halfway through down
travel does not guarantee reversal on a 1-1/2"
(3.8 cm) obstruction. See Adjustment Step 3,
page 29.
If the door is hard to hold or doesn't
reverse,
DECREASE the DO
WN
(close) force by
turning the control counterclock
w
ise. Make small
adjustments until the door re
v
erses normally.
After each adjustment, run the opener through a
complete cycle.
•
If the door reverses durin
g
the down (close)
cycle and the opener li
g
hts aren't flashin
g
,
I
N
CREASE DO
WN
(close) force by turning the
control clock
w
ise. Make small adjustments until
the door completes a close cycle. After each
adjustment, run the opener through a complete
tra
v
el 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
w
hen the door is about
half
w
ay through UP (open) tra
v
el. The door
should stop.
If the door is hard to hold or
doesn't stop,
DECREASE UP (open) force by
turning the control counterclock
w
ise. Make small
adjustments until the door stops easily and opens
fully. After each adjustment, run the opener
through a complete tra
v
el cycle.
• If the door doesn’t open at least 5 feet (1.5 m),
I
N
CREASE UP (open) force by turning the
control clock
w
ise. Make small adjustments until
door opens completely. Readjust the UP limit if
necessary. After each adjustment, run the opener
through a complete tra
v
el cycle.
Right Panel
Force Adjustment Controls
1
3
9
7
5
1
3
9
7
5
FORCE ADJUSTME
N
T LABEL
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.
WARNING
CAUTION
WARNING
WARNING
