Set The Force - LiftMaster MERIK SECURITY+ 790LMK Manual Del Propietário

ADJUSTMENT STEP 2

Set the Force

The force setting measures the amount of force required to
open and close the door.
1. Push the orange button twice to enter into the Force Adjustment
Mode. The LED will fl ash 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 fl ashing 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.
Without a properly installed safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door.
• Too much force on garage door will interfere with proper
operation of safety reversal system.
• NEVER increase force beyond minimum amount required to
close garage door.
• NEVER use force adjustments to compensate for a binding or
sticking garage door.
• If one control (force or travel limits) is adjusted, the other
control may also need adjustment.
• After ANY adjustments are made, the safety reversal system
MUST be tested. Door must reverse on contact with a
38 mm high object on fl oor.
Figure 1
Black Button
Antenna
Antenna
Figure 2
Push Orange button
Push Orange button
twice to enter unit into twice to enter
Force Adjustment
unit into
o r c e
Mode
A d j u s t m e n t M o d e
Figure 3
30
Indicator
Indicator Light
Black
Light
Button
Orange Button
Orange
Button
BLACK ORANGE
or