Adjustment Section - Merlin Whisper Drive MT3850EVO Installation And Operating Instructions Manual

ADJUSTMENT STEP 1
Program the Travel Limits and Force
Settings
Figure 1
NOTE: Travel limits regulate the points at which the
door will stop when moving up or down. Follow the
steps below to set the limits.
To program the travel limits:
1. Press and hold the Learn Limits Button until a beep
is heard and the UP Arrow Button and indicator light
begin to flash (figure 2).
2. Press and hold the UP Arrow Button until the door is in
the desired UP position (figure 3).
NOTE: The UP and DOWN Arrow Buttons can be
used to move the door up and down as needed.
3. Once the door is in the desired UP position press and
release the Learn Limits Button. The DOWN Arrow
Button will begin to flash (figure 4).
4. Press and hold the DOWN Arrow Button until the door
is in the desired DOWN position (figure 5).
NOTE: The UP and DOWN Arrow Buttons can be
used to move the door up and down as needed.
5. Once the door is in the desired DOWN position press
and release the Learn Limits Button. The UP Arrow
Button will begin to flash (figure 2).
6. Press and release the UP Arrow Button to test the UP
limit. When the door travels to the programmed UP
limit, the DOWN Arrow Button will begin to flash.
7. Press and release the DOWN Arrow Button to test the
DOWN limit. The door will travel to the programmed
DOWN limit.
The Travel Limits and Force Setting has now been set.
TIPS : Repeated operation of the garage door opener
during adjustments may cause the motor to
overheat. Wait 15 minutes and try again.
If anything interferes with the door's upward travel
it will stop. If anything interferes with the door's
downward travel, it will reverse.
Battery
Status
LED
Learn
Button
UP Arrow
Button
Learn Limits
Button
LED
DOWN Arrow
Button
Without a properly installed safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing door.
• Incorrect adjustment of garage door travel limits will interfere with
proper operation of safety reversal system.
• NEVER use force adjustments to compensate for a binding or
sticking garage door.
• After ANY adjustments are made, the safety reversal system
MUST be tested. Door MUST reverse on contact with 40 mm
high object laid flat on floor.
To prevent damage to vehicles, be sure fully open door provides
adequate clearance.
Figure 2
Indicator Light
Figure 3
Indicator Light
Figure 4
Indicator Light
Figure 5
Indicator Light
17