STEP 1:
Testing the Limit Settings:
To check the
Limit Settings, start the Opener by pushing the standard
wall Push Button or Super Station. Be prepared to
activate the button again quickly - per the Operating
Parameters outlined on page 12 - or if you see that the
door is going to over travel. As illustrated below, move
the Cams toward the Power Unit to
DECREASE
door
travel and toward the Front Idler to
INCREASE
door
travel. Adjust the Up Limit Cam so that the door
comes to rest where it normally would without an
electric Opener. Adjust the Down Limit Cam so that
the door closes firmly without putting undue stress on
the Door Arm. At full closed position, the door arm
assembly should compress approximately one inch.
STEP 2:
Adjusting the Sensitivity Force —
Sensitivity System force adjustment screws are located
on the side rails of the Power Unit and can easily be
adjusted with a screwdriver. Turn the screws
CLOCKWISE
for more force and
COUNTERCLOCKWISE
for less force.
STEP 3:
Testing the Sensitivity Force —
To test
the Sensitivity System, start the Opener and grasp the
bottom door handle halfway through the door's travel
(opening or closing).
As an
alternate,
use a stiff
cardboard
carton
placed in
the door's
downward
path to
indicate the force the Opener is exerting.
If the force adjustment screws are properly set, the door
should stop if opening, and reverse if closing without
exerting undue pressure.
STEP 4:
Testing the Opener’s Reversing System
—
To test the Opener's Reversing Feature at floor level,
place a solid object 1-1/2" thick (such as a standard 2 X
4 board laid flat) on the ground where the center of the
door will contact it. Close the door. If the down force
OPEN FORCE
ADJUSTMENT
CLOSE FORCE
ADJUSTMENT
104391
OPERATION AND ADJUSTMENT INSTRUCTIONS
108407
WARNING
W A R N I N G
IMPROPER ADJUSTMENT OF
SENSITIVITY SYSTEM FORCE COULD
CAUSE ENTRAPMENT, INJURY OR
DEATH. SET ADJUSTMENTS FOR JUST
ENOUGH FORCE TO OPERATE THE
DOOR RELIABLY, BUT NO STRONGER.
Contact a service professional to
correct any binding, sticking or other
door problems. DO NOT OVER-ADJUST
SENSITIVITY SYSTEM TO
COMPENSATE FOR A POORLY
WORKING DOOR.
THE SENSITIVITY SYSTEM REVERSING TEST
SHOULD BE PERFORMED MONTHLY TO
ENSURE THAT THIS IMPORTANT SYSTEM
REMAINS IN PROPER ADJUSTMENT.
W A R N I N G
16
More Downward Travel
Close Limit Cam
More Upward Travel
Open Limit Cam
IF LIMITS ARE NOT
ADJUSTED
PROPERLY, THE
EMERGENCY
RELEASE
MECHANISM MAY
NOT WORK
PROPERLY AND
DOOR OPERATION
COULD
RESULT IN DOOR
DAMAGE, SERIOUS
PERSONAL INJURY
OR DEATH!
Limit Cam
Assembly
