Adjustments; Programming Buttons - LiftMaster ATSW Mode D'emploi

Adjustments

Introduction
Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY
INJURED or KILLED by a closing door.
Incorrect adjustment of door travel limits will interfere with proper operation of safety reversal system.
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After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on
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contact with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on floor.
To prevent damage to vehicles, be sure fully open door provides adequate clearance.
Your door operator is designed with electronic controls to make setup and adjustments easy. The adjustments allow
you to program where the door will stop in the open (UP) and close (DOWN) position. The electronic controls sense
the amount of force required to open and close the door. The force is adjusted automatically when you program the
travel.
NOTE: If anything interferes with the door's upward travel it will stop. If anything interferes with the door's downward
travel, it will reverse.
UP (Open)
DOWN (Close)

PROGRAMMING BUTTONS

The programming buttons are located on the side panel of the door operator and are used to program the travel. While
programming, the UP and DOWN buttons can be used to move the door as needed.
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PROGRAMMING BUTTONS
UP Button
Adjustment
Button
DOWN Button