4.6
Restricted Headroom Installations
The Hanger Brackets are designed to be readily
adaptable for
"low-headroom"
installations. Make a
90
degree bend in the Hanger Bracket through the centre of
the lower of the two holes as shown. The bracket may
then be fastened directly to the ceiling. The clearance
between the ceiling and the operator will be sufficient to
allow the removal of the operator's Service Cover.
Bend Line
0
9
Ceiling
m
in
im
u
m
1
0
m
m
4.7
Attaching the Door Bracket
- Sectional type Doors
4.7.1
The
Door Bracket
is attached to the door at the
centreline position in such a way that the
Clevis Pin
in the
Door Bracket
is
approximately in line with the topmost
Rollers of the door.
4.7.2
Use the three
No 12 x 30 mm
slotted pan-head
head screws provided to fix the
Door Bracket
to the door.
4
.8
Attaching the Towing Arms
Onto Sectional Type Doors.
4.8.1
Use both the
"L" Shaped Towing Arm
and
the
Straight Towing Arm
to couple the door to
the traveller as shown in Fig 27. The
"L" Arm
is attached to the door whilst the
Straight Arm
is connected to the Traveller as shown.
4.8.2 Use the two
10
mm dia. Clevis Pins and
2,5
mm
Split-Pins to couple the towing arm to the door
bracket and traveller.
IMPORTANT NOTES :-
4.8.3
The towing arm should make an angle of
between
75
and
80 degrees
to the
horizontal
when the door is in the
closed
position.
4.8.4
The security of the locked door is a
function of the angle which the "Towing
Arm" makes with the horizontal.
15 degrees off the vertical is the optimum
angle for Sectional type Doors.
Door Towing Bracket Position
Roller Axis
Top Rail
of Door
Centre Line
of Door
Door Towing
Bracket
C/Line of
Clevis Pin
p
t
To Sec ion
door
light
brano industries
CAUTION
Multi function
Push-button Console
and Label
Fig. 25
Fig. 27
Fig. 26
Approx.
15 Angle
75 - 80
Garage
Access
Door
page 13
Now turn to Section 6, page 18
for PC Board connections !
Brano door operator installation manual"
