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be set to allow a deliberately greater amount of force to be applied to the door.
STEP 3:
To set the force levels automatically, turn the control knobs clockwise and then fully
back anticlockwise. Ensure that the door is engaged to the opener. Then operate the opener
to move the door in a single unobstructed movement from one limit position to the other. If no
obstruction was sensed during this cycle then the opener will save the settings to memory.
Operate the opener to move the door back to the original limit position. Again, if no obstruc-
tion is sensed, the settings will be stored in memory.
STEP 4:
To set the force levels at some higher level, rotate the control knob to some position
clockwise from the auto-setting point.
STEP 5:
If a very light door is being operated, and if a very gentle closing force is required,
then set the option switch marked ‘Light door’ to the ON position. Note that on a heavier door
this option switch position may result in unintended detections of obstructions.
Setting up wireless controls
Wireless controls can operate the opener, or the opener’s courtesy lamp, by sending coded
radio signals. These coded signals use high-security code-hopping.
Wireless controls can be hand-held or fixed to walls, such as a wireless keypad, or a wireless
wall-switch.
Up to 20 Merlin wireless controls can be learned by the opener. After this, the 20th wireless
control is over-written in the opener’s memory.
All wireless controls can be deleted from the opener’s memory.
There is a learn button on the underside of the opener inside the lamp cover. The small
button on a Merlin M-122 wired wall-switch can also be used as the learn button.
If a setting is enabled in the opener, then it is possible to use any existing learned wireless
control as a learn button. (See separate section following.)
Remove the lamp cover by turning the catch on it’s underside. Remove the green control
panel cover to expose the setup controls. Identify the red learn button.
To learn a remote button to operate the opener:
Press the learn button for 1-2 seconds, until the courtesy lamp begins to flash slowly.
Press the desired remote button, wait 1 second, press the desired remote button again. The
courtesy lamp will stop flashing once learning is complete.
To learn one remote button to operate the opener and another to operate the
lamp:
Press the learn button for 1-2 seconds, until the courtesy lamp begins to flash slowly.
Press the desired remote button for control of the opener, wait 1 second, press the desired
remote button for control of the courtesy lamp. The courtesy lamp will stop flashing once
learning is complete.
To delete all remote controls from the opener’s memory
Press and hold the Learn (or setup on some models) button for eleven seconds, until the
courtesy lamp stops flashing. After six seconds it will flash fast as a warning. If you release
the learn (or setup) button during this warning period then the memory will not be wiped.
