Craftsman 139.535006 - Manual (Page 17)

Installation
STEP 11
Adjust Limits (Ail One-Piece Doors Only}
CAUTION; To prevent damage to garage doors,
the opener limits must be adjusted on ALL ONE-
PIECE DOORS,
Limit Adjustment settings regulate the points at
which door will stop when moving up or down.
Repeated operation of theopenerduring adjustment
may cause the motor to overheat and shut off. Simply
wait 15 minutes and continue adjustments.
Limit adjustment screws are located on the left side
panel of the openeras shown. Increase limits by turn­
ing screws in direction shown on label. Decrease
limits by turning screws in opposite direction.
Left Side
Panel UimiS
Adjustment
Screws
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Adjustment Label
The following illustration shows the position of the door arm and trolley when the door is open (solid line drawing),
and when the door is closed (dotted line drawing)
PROCEDURE - OPEN DOOR ADJUSTMENT
DECREASE the UP limit by turning the UP limit adjust­
ment screw counterclockwise 8 complete turns.
Press Wall Control push button. Trolley will travel to
full open position.
Manually raise garage door to open position (paral­
lel to floor) and lift door arm to trolley. The arm should
touch trolley Just in back of door arm connector hole
as shown In solid line drawing If the arm does not
extend far enough, make further DECREASED limit
adjustment. One full turn equals 2 inches of door
travel,
CONNECT DOOR ARM TO TROLLEY PROCEDURE: With door closed,Join wedge door arm to connector hole in
trolley with the remaining clevis pin Secure with a cotter pin. NOTE: It may be necessary to lift door slightly to
make connection.
Run the opener through a complete travel cycle, If door has a slight ‘downward' slant in full open position, turn the
UP limit adjustment screw counterclockwise to decrease travel until door is parallel to floor.
PROCEDURE - CLOSED DOOR ADJUSTMENT
DECREASE the DOWN limit by turning the DOWN
limit adjustment screw clockwise 4 complete turns
Press Wall Control push button. Trolley will travel to
full closed position,
Manually close garage door and lift door arrh to the
trolley Arm should touch trolley just ahead of door
arm connector hole as shown in dotted line drawing.
If arm is behind the connector hole, make further
DECREASED limit adjustment. One full turn equals 2
inches of door travel.
17