Chamberlain ML750 User Manual

POSITION 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 rail.
1. Raise the opener up onto 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 motor. Leave the trolley in this
position until motor is fastened in place.
ONE PIECE TILT DOOR (NON TRACKED)
You will need a 100mm (4”) piece of timber or similar
spacer to gauge the distance between door and rail.
1. Raise the opener onto 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 motor. Do not position the opener more
than 50mm (2”) above this point.
15
Rail
D
oor
50mm spacer should
be used to determine
the correct mounting
position
Header
B
racket
5
0mm (2”)
a
bove the highest
point of travel
Header
Bracket
50mm spacer should
be used to determine
the correct mounting
position
50mm (2”)
above the highest
point of travel
Door
Rail
100mm spacer should
be used to determine
the correct mounting
position
Door
Header
200mm (8”)
above the highest
point of travel
Bracket
Rail
Position the opener on the garage floor below the header
bracket. Place packing material under the opener to protect
t
he cover. Raise rail until holes in the header sleeve and
holes in the header bracket align. Join with clevis pin (1).
Insert ring fasteners (2) to secure.
NOTE: To enable the rail to clear the sectional door
s
prings, it may be necessary to lift opener onto a
temporary support. The opener must either be secured
to a support or held firmly in place by another person.
2
2
1
1
1
2
14
6
Door
A
Door
B
Door
C
ATTACH RAIL TO HEADER BRACKET

Chamberlain ML750 Specifications

General

Brand	Chamberlain
Model	ML750
Category	Garage Door Opener
Language	English