Path of Topmost
Section of the Door
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4.4
M o u n t i n g t h e
" p r o - a l p h a "
Garage Door Operator.
4.4.1
For
all
overhead type garage doors, the
operator is suspended from the ceiling of the
garage by means of
2
lengths of Punched
Angle which are attached to the Hanger
Brackets fixed to the Power-Head.
4.4.2
First .....
Attach the Aluminium Extrusion
of the operator to the Header Anchor
Bracket using the M 8 x 25 Hex-head Set
Screw supplied.
4.4.3
Next .....
Temporarily support the Power-
head from the ceiling by means of a suitable
rope or prop it up with a ladder as shown in
Fig. 21
4.4.4
Then .....
Open the garage door fully. This
will assist you to position the operator on the
"centreline"
of the door.
Preferred
Arrangement
Not
Recommended
4.5.1 Mounting the Power-head
4.5.2
Establish the position of the nearest roof
beams or other suitable overhead structures
from which the operator may be supported.
Using the lengths of
Punched Angle
and
Fasteners
supplied, suspend the operator
from the ceiling.
4.5.3
Take care to ensure the operator is
positioned along the extended centreline of
the door.
Note:-
For all
Overhead Track
type doors, the
operator is mounted in such a way that it
is "horizontal", i.e. "parallel" to the floor.
Sectional Doors
Operator - to - Door Clearance
at
"high-rise point"
20 - 50 mm
Fig. 21
Fig. 23
Fig. 22
Fig. 24
4.5 Useful Dimensions
370
1
0
6
0
9
3
6
7
5
8
4
6
190
Minimum
Back Clearance
20
3
5
230 Over-all
200
43
2
0
0
1
6
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4
0
Ceiling
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page 12
"High-Rise"
Point of Door
1
0
m
m
Pro-alpha 2000
