Chamberlain 248754 garage door opener

User Manual - Page 29

For 248754.

PDF File Manual, 44 pages, Download pdf file

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ADJUSTMENT STEP 2
Setting the Force
The force setting button is located on the left panel
of the motor unit. The force setting measures the
amount of force required to open and close the door.
1. Locate the purple button on the left panel of the motor
unit (Figure 1).
2. Push the purple button twice to enter the opener into
Force Adjustment Mode (Figure 1). The LED (Indicator
Light) will flash quickly.
3. Push the remote control or door control (Figure 2).
The door will travel to the DOWN (close) position.
Push the remote control or control console again, the
door will travel to the UP (open) position. Push the
remote control or door control a third time to send the
door to the DOWN (close) position.
The LED (Indicator Light) will stop flashing when the
force has been learned.
The opener has learned the forces required to open and
close your door.
The door must travel through a complete cycle, UP and
DOWN, in order for the force to be set properly. If the
opener cannot open and close your door fully, inspect
your door to insure that it is balanced properly and is not
sticking or binding. See page 3, "Preparing your
garage door."
Without a properly installedsafety reversalsystem, persons
(particularly small children) could be SERIOUSLYINJURED
or KILLED bya closing garagedoor.
Too much force on garage door will interfere with proper
operation of safety reversalsystem.
NEVERuseadjustments to compensatefor a binding or
sticking garage door.
After ANYadjustments are made,the safety reversalsystem
MUST betested. Door MUST reverseon contact with 1-1/2"
(3.8 cm) high object (or 2x4 laid flat) on floor.
Figure 1
Push Purple button
twice to enter
unit into Force
Adjustment Mode
Indicator
Light
Black
Button
Purple
Button
Figure 2
OR
29
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