EDR4 1169 G 10/03
7
Rotate
adjuster
Lock nut
Lock nut
Chain threading
300-500mm
Attaching mounting strapping
Additional setup for trackless tilt doors (jamb fittings) only
Fit the chain to the smaller 15 tooth sprocket.
The chain length will need to be reduced to suit the shorter pole length
and the smaller sprocket size.
There is a removable link approximately 1150 mm from one end
of the chain. Undo this link by using pliers to slide the clip
off. Remove the 90 link section of chain. Remove the at-
tachments from the short section of chain and re-attach
them to the long section of chain.
STEP 5:
Thread up the chain.
Unroll the chain and thread it around the
sprocket and return pulley, as in the diagram. You will need to pull the trolley lever
downwards to push the chain
adjuster through the trolley.
STEP 6:
Connect the two ends of the
chain.
Undo the joining link at the
free end of the chain and reconnect it through the hole in␣ the chain adjuster.
Tighten the adjuster until the chain hangs no lower than the bottom of the pole.
Tighten the locknuts on the adjuster. Replace the sprocket cover.
STEP 7:
Attach the mounting strapping to the power head.
Use the light angled straps that are packed in with the opener.
Locate the black 1/4" machine screws for the rubber
mounting bushes. They are in the hardware pack. Attach
your mounting strapping using these screws. Remem-
ber to place a washer between the rubber bushing and
the strapping.
Installing the opener
WARNING Garage doors are under great spring tension. Do not attempt to ad-
just the spring tension on your garage door. Do not remove the springs. Merlin
Garage Openers Limited do not accept responsibility for damage or injury resulting
from installing this opener. Please read this manual fully before attempting installa-
tion. If you have any concerns please consider getting the opener installed by an
Authorised Merlin Installer.
STEP 1:
Check that there is a power point available and that there is adequate clearance
to mount the opener onto the door.
STEP 2:
Close the door.
STEP 3:
Mark the centre line of the door using a tape measure and pencil. Mark on the
Chain tensioning
