Owner`s manual

ADJUSTMENT STEP 2
Adjustthe Force
Forceadjustment controls are locatedon the backpanel of the
motor unit. Forceadjustment settings regulate the amount of
power requiredto open and closethe door.
If the forces are set too light, door travel may be interrupted by
nuisancereversals in the down direction and stops in the up
direction. Weather conditions can affect the door movement, so
occasional adjustment may be needed.
The maximumforce adjustmentrange is about3/4 of a complete
turn, Do notforcecontrolsbeyondthat point, Turnforce
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.
Without a properly installed safety reversalsystem, persons
(particularly small children) could be SERIOUSLYINJUREDor
KILLEDby a closing garage door.
• Too much force on garagedoor will interfere with proper
operation of safety reversalsystem.
• NEVERincreaseforce beyond minimum amount required to
close garagedoor.
• NEVERuse force adjustments to compensatefor a binding or
sticking garagedoor.
• If one control (force or travel limits) is adjusted, the other
control may also needadjustment.
• After ANY adjustments are made,the safety reversalsystem
MUST betested. Door MUST reverseon contact with 1-1/2"
(3.8 cm) high object (or 2x4 laidflat) on floor.
HOWANDWHENTO ADJUSTTHEFORCES
1. Testthe DOWN(c/ose)force
• Grasp the door bottom when the door is about halfway
through DOWN(close) travel. The door should reverse.
Reversalhalfway through down travel does not guarantee
reversalon a 1-1/2"(3.8 cm) obstruction. SeeAdjustment
Step 3, page29.
If the dooris hard to hold ordoesn't reverse, decreasethe
DOWN(close) force by turning the control counterclockwise.
Makesmall adjustments until the door reverses normally.
After eachadjustment, run the openerthrough a complete
cycle.
• If the door reversesduring the down (close) cycleand the
openerlightsaren't flashing, INCREASEDOWN(close) force
by turning the control clockwise. Makesmall adjustments
until the door completes a close cycle.After each adjustment,
run the openerthrough a complete travel cycle. Do not
increasethe force beyond the minimum amount required to
close the door.
2. Testthe 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
hardto hold or doesn'tstop,DECREASEUP (open) force by
turning the control counterclockwise. Makesmall
adjustments until the door stops easily and opens fully. After
each adjustment, run the opener through a completetravel
cycle.
• If the doordoesn'topenat least 5 feet (1.5 m), INCREASE
UP (open) force by turning the control clockwise. Makesmall
adjustments until door opens completely. Readjustthe UP
limit if necessary.After each adjustment, runthe opener
through a complete travel cycle.
ForceAdjustment
Controls
ADJUSTMENTLABEL
Open Force Close Force
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