Adjustment; Introduction - Craftsman CMXEOCG781 Owner's Manual

ADJUSTMENT

INTRODUCTION

Your garage door opener 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)
ONE-PIECE DOORS ONLY
When setting the UP travel for a one-piece door ensure that the door does not slant
backwards when fully open (UP). If the door is slanted backwards this will cause
unnecessary bucking and/or jerking when the door is opening or closing.
PROGRAMMING BUTTONS
The programming buttons are located on the left side panel of the garage door
opener and are used to program the travel.
Without a properly installed safety reversal system, persons (particularly
small children) could be SERIOUSLY INJURED or KILLED by a closing garage
door.
Incorrect adjustment of garage door travel limits will interfere with proper
l
operation of safety reversal system.
After ANY adjustments are made, the safety reversal system MUST be
l
tested. Door MUST reverse on 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.
DOWN (Close)
30
CORRECT
INCORRECT
PROGRAMMING BUTTONS
UP
Button
Adjustment
Button
DOWN
Button