Set The Force - Chamberlain 8500C Manual

Adjustment
2

Set the Force

The force setting measures the amount of force required to open and close the door.
1. Push the yellow button twice to enter into the Force Adjustment Mode. The LED will
flash quickly.
2. Push the door control or programmed remote control. The door will close (DOWN).
3. Push the door control or programmed remote control again. The door will open (UP).
4. Push the door control or programmed remote control a third time to close the door
(DOWN).
The LED will stop flashing when the force has been programmed.
The door must travel through a complete cycle, up and down, in order for the force to be
set properly. If the garage door opener cannot open and close the door fully, inspect the
door to ensure that it is balanced properly and is not sticking or binding.
If the door is not stopping exactly where you would like it, repeat Program the Travel
Limits.
LED
2
or
1
Push yellow
button twice to
enter garage
door opener
into Force
Adjustment
Mode
3
or
20
Without a properly installed safety
reversal system, persons (particularly
small children) could be SERIOUSLY
INJURED or KILLED by a closing
garage door.
• NEVER learn forces or limits when
door is binding or sticking. Repair
door first.
• Too much force on garage door
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" high (3.8 cm)
object (or 2x4 laid flat) on floor.
4
or