Fitting Rail To The Drive; Installation Of The Opener; Centre Of The Garage Door; Mounting Header Bracket - Chamberlain ML700 Instructions Manual

11

Fitting rail to the drive

1. Remove transport lock (X). Check if the chain is seated on the
gearwheel. If the chain has slipped off during assembly, relax the
chain, lay it and tighten again.
2. Turn around the rail (1) and completely put on the opener (3) with
the gear side (2).
3. Secure the rail on the opener with two mounting brackets (4) and
the screws (5).
This completes the assembly of the door opener.
12

Installation of the opener

12.1

Centre of the garage door

Eye protection goggles should be worn for overhead work.
All available barriers / locks should be deactivated to avoid damage
to the door.
To avoid serious injuries, remove all cables and chains connected to
the door before installing the door opener. The door opener should be
mounted at a height of at least 2.10 m above the ground.
First, mark the centre line of the door (1). Draw a line to the ceiling
starting from this point.
For installation on the ceiling, draw another line to the centre of the
ceiling (2) perpendicular to the door starting from this line.
Length approx. 2.80 m.
13

Mounting header bracket

A. Wall fastening:
Mount header bracket (1) centrally on the vertical centre line (2); there-
by its lower edge lies on the horizontal line. Mark all holes for the head-
er bracket. Pre-drill holes with 4.5 mm diameter and fasten the
header bracket with wood screws (3).
NOTE:
In case of mounting on a concrete slab / concrete header, the provided
concrete plugs (4) and screws (3) should be used. Drill hole size in
concrete: 8 mm.
B. Ceiling suspension:
Draw vertical centre line (2) further up to the ceiling and about 200 mm
along the ceiling. Attach header bracket (1) centrally on the vertical
marking up to 150 mm removed from the wall. Mark all holes for the
header bracket. Drill holes with 4.5 mm diameter and fasten the header
bracket with wood screws (3).
Note:
Mount the rail max. 50mm above the top edge of the door.
Depending on the door type, the top edge of the door is lifted by a few
cmduring opening.
14

Attaching drive to header

It may be necessary to place the drive temporarily higher, so
that the rail does not hit the springs in multi-piece doors.
The drive must either be well supported (ladder) or held firm-
ly by a second person.
Put drive head on garage floor under the lintel bracket.
Lift rail up till the holes of the fixing part and the holes of the lintel
bracket are aligned.
Insert screw (1) through the holes and secure with nut (2).
15

Hang opener

1. Fully open the door, put down door opener on the door (Fig. A).
Lay a piece of wood / cardboard on the marked spot (X).
The opener must be securely fastened to a structural support of
the garage.
Three representative installations are shown. Yours may be different.
Hanging brackets (1) should be angled (Figure A) to provide rigid
support. On finished ceilings, (Figure B) attach a sturdy metal bracket
(not supplied) (4) to a structural support before installing the opener.
For concrete ceiling mount, (Figure C), use concrete anchors (5)
provided.
On each side of opener measure the distance from the opener to the
structural support (or ceiling).
Cut both pieces of the hanging bracket to required lengths. Flatten one
end of each bracket and bend or twist to fit the fastening angles. Do
not bend at the bracket holes. Drill 4,5mm pilot holes in the
structural supports (or ceiling). Attach brackets to supports with wood
screws (2).
Lift opener and fasten to hanging brackets with screw and nut (3).
Check to make sure rail is centered over the door.
REMOVE 25mm board. Operate door manually. If door hits the
rail, raise header bracket.
Pay attention to a horizontal course of the rail along the
ceiling. The distance can be adjusted by the given hole
spacing. Protruding ends of the ceiling fixture can be reduced
if necessary.

Mounting door bracket

16
Installation in sectional or one-piece doors:
The door bracket (1) has multiple mounting holes. Attach door bracket
top centre on the inside of the door as shown. Mark holes and screw
door bracket.
Mounting heights:
1. One-piece or sectional door with a guide rail:
distance to door top edge 0-100 mm.
2. Sectional door with two guide rails:
istance to door top edge 100-130 mm.
NOTE:
The attachment point on the door must be the frame or a stable place
on the door panel. If necessary, drill through and screw (not included)
together as shown in Fig. B.
4