Merlin Powerlift User Manual page 10

nuts and wash-
ers. For a metal
door you may
prefer to use pop
rivets
screws.
You can mount
the door bracket either vertically or horizontally on the ga-
rage door. There must be a solid fixing point near the top
of the door. If this is not the case a piece of angle iron or a
support plate should be fixed to the door as shown.
STEP 16: Connect one end of the straight door arm to the
trolley. Attach to the trolley using the short clevis
pin and its clip.
Usually the straight arm is all that is required on
tilting doors. Usually the L arm is attached between
the door and the straight arm for use with sectional doors. Each installation
is a little different and you may have to shorten or re-drill the door arm in some
cases.
If you have not been able to attach the door bracket near the top edge of the door
then you may need to use the L-arm to prevent fouling of the door in the fully open
position.
CAUTION When the door is fully closed the door arm must not ever become vertical.
If the door arm is vertical then the opener can not sense an obstruction. The door arm
must remain at less than a right angle to the pole.
Disengage the trolley by pulling the red release cord straight down. Slide the trol-
ley towards the door until the free end of the door arm reaches the door bracket.
Connect the free end of door arm assembly to the door bracket using the M8 bolt,
hex nut and nylok nut. The bolt goes through the door bracket and the lock nuts
lock either side of the door arm. After tightening the lock nuts the bolt must be
able to turn freely in the bracket.
STEP 17: Locate a convenient position to mount the pushbutton. The garage door should be
visible from this location. There should be no moving parts of the door or opener
within 1.8 metres of this button and the button should be placed higher than 1.5
metres from the floor.
If you are using a wireless pushbutton then follow the instructions on setting up wire-
less controls.
If you are using a wired pushbutton connect the pushbutton wire to the manual
control accessory terminals on the rear of the power head. Take care to keep
frayed wire ends from shorting across terminals.
Route wire from the power head to the location for the pushbutton. Fasten the
wire to the wall with the staples provided. Take care to allow some slack in the
wire between the first staple and the power head. Take care not to puncture the
or Tek
Preferable for
sectional doors
Preferable for
tilt doors
10
Door arm examples
OK for
tilt doors
Door bracket,
lock nut, trolley
and clevis pin