Adjustment; Introduction - Chamberlain C2405 User Manual

Adjustment

Introduction

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 operation of safety reversal system.
•
After ANY adjustments are made, the safety reversal system
MUST be 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.
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.
Programming
Buttons
Programming Buttons
The programming buttons are located
on the back panel of the garage door
opener and are used to program the
travel. While programming, the UP
and DOWN buttons can be used to
move the door as needed.
UP Button
Adjustment
Button
DOWN Button
11