Chamberlain Merlin Professional MT230 Installation And Operating Instructions Manual page 7

11
ATTACH POLE ASSEMBLY TO HEADER BRACKET
Position opener on garage floor below the header bracket.
Use packing material to protect the cover.
NOTE: To enable the Pole to clear sectional door springs,
it may be necessary to lift opener onto a temporary sup-
port.
The opener must either be secured to a support or held firm-
ly in place by another person. Raise the pole assembly until
chain pulley and header brackets come together. Join with
clevis pin (1). Insert R-Clip (2) to secure.
12
POSITIONING THE OPENER
SECTIONAL DOOR OR
TRACKED TILT DOOR
You will need a 50mm piece of timber or similar
spacer to gauge the distance between door and pole.
1. Raise the opener onto a support.
2. Open the door completely, place a 50mm
spacer between the door and the rail (as shown).
3. If the top section or panel hits the trolley when
you raise the door, pull down on the trolley arm
to disengage the opener. Leave the trolley in
this position until opener is fastened in place.
ONE PIECE TILT DOOR
You will need a 100mm (4") piece of timber or similar
spacer to gauge the distance between door and pole.
1. Raise the door onto a support.
2. Open the door completely, place a 100mm
spacer between the door and the rail (as shown).
3. The top of the door should be level with the top
of the opener. Do not position the opener more
than 50mm (2") above this point.
Header
Bracket
Door
Header
Bracket
7
2
1
1
2
Pole
50mm (2")
above the highest
point of travel
50mm spacer should
be used to determine
the correct mounting
from the ceiling
Pole
50mm (2")
above the highest
point of travel
50mm spacer should
Door
be used to determine
the correct mounting
from the ceiling
200mm (8")
Header
Pole
above the highest
Bracket
point of travel
Top of Door
100mm spacer should
be used to determine
the correct mounting
from the ceiling