Loading ...
Loading ...
Loading ...
ADJUSTMENT STEP 1
Adjust the UP and DOWN Travel Limits
Limit adjustment settings regulatethe points at which the door
will stop when moving up or down.
To operate the opener, pressthe Door Control push bar. Run the
openerthrough a complete travel cycle.
1. Doesthe door open and close completely?
2. Doesthe door stay closed and not reverse unintentionally when
fully closed?
If your door passes both of these tests, no limit adjustments are
necessaryunless the reversing test fails (seeAdjustment Step 3,
page29).
Adjustment procedures areoutlined below. Readthe procedures
carefully before proceedingto Adjustment Step 2. Use a
screwdriver to make limit adjustments. Runthe openerthrougha
completetravel cycle after each adjustment.
NOTE:Repeatedoperation of the openerduring adjustment
procedures may cause the motor to overheatand shut off. Simply
wait 15minutes and try again. 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.
HOWAND WHENTO ADJUSTTHE LIMITS
• If the doordoesnot opencompletelybut opensat least five
feet (1.5 m):
Increaseup travel. Turn the UP limit adjustment screw
clockwise. One turn equals 2" (5 cm) of travel.
NOTE: Toprevent the trofley from hitting the coverprotecfion
bolt, keep a minimum distance of 2-4"(5 cm - 10 cm) between
the trolley and the bolt.
• If doordoesnot openat least 5 feet (1.5 m):
Adjust the UP (open) force as explained in Adjustment Step 2.
• If the doordoesnot closecompletely:
Increasedown travel. Turn the down limit adjustment screw
counterclockwise. One turn equals 2" (5 cm) of travel.
If door still won't close completely and the trolley bumps into
the pulley bracket (page4), try lengthening the door arm
(page 25) anddecreasing the down limit.
• If the openerreversesin fully closedposition:
Decreasedown travel. Turn the down limit adjustment screw
clockwise. One turn equals 2" (5 cm) of travel.
• If the doorreverseswhen dosing and there is no visible
interferenceto travel cyde:
If the opener lights are flashing, the Safety ReversingSensors
are either not installed, misaligned, or obstructed. See
Troubleshooting, page22.
Test the door for binding: Pull the emergency releasehandle.
Manually open and close the door. If the door is binding or
unbalanced,call for a trained door systems technician. If the
door is balancedand not binding, adjust the DOWN(close)
force. SeeAdjustment Step 2.
Without a properly installed safety reversal system, persons
(particularly small children) could be SERIOUSLYINJUREDor
KILLEDby a closing garage door.
• Incorrect adjustment of garage door travel limits will interfere
with proper operation of safety reversalsystem.
• If one control (force or travel limits) is adjusted, the other
control may also needadjustment.
• 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.
To preventdamage to vehicles, be sure fully open door
provides adequateclearance.
Cover Protection Bolt
LeftPanel LimitAdiustment
Screws
ADJUSTMENT LABEL
27
Loading ...
Loading ...
Loading ...