3.7 install torsion bar
Before lifting the torsion bar into position, check there
is a solid foundation of either brickwork, timber studs,
head or ceiling that will support the lifting system
correctly.
CAUTION:
Be careful not to
over tighten the set-screws
a) Lift the torsion bar assembly into position, resting both ends
over the top of the horizontal tracks. Fig. 3.7.1.
Fig: 3.7.1
Fig: 3.7.2
Fig: 3.7.3
J
L
K
NOTE:
Refer to appendix if installing a rear torsion systems.
b) Ensure that the side bearing brackets
L
and cable drums
J
are situated on the inside of the horizontal tracks.
c) Line up the spring anchor bracket
K
with the middle of the
door, so that the cut corner is facing down.
d) Slide the torsion bar assembly towards the wall so the
spring anchor bracket can touch the wall (the axle must be
parallel with the opening).
tip
Unwind the lifting cable from the
bottom panel.
CAUTION:
For larger doors refer to 5.4 appendix as a
stronger system may be required.
e) Secure the spring anchor bracket to the wall/ceiling and
the side bearing brackets to the tracks as shown in Fig 3.71.
tip
For wide doors, place a temporary support in
the center of the torsion assembly to prevent sag
and possible collapse.
f) Attach the lifting cable to the cable drum by slipping
the cable into the slot on the outside groove. (the
ferrule will prevent the cable from coming out)
Fig 3.7.2.
g) Wind the cable by hand by turning the cable drum away
from the door.
h) Once the cable is taut, slide the cable drum against the
side bearing bracket and tighten the screws to the torsion
bar. Fig 3.7.3.
tip
It may be necessary to offset the anchor bracket
in order to clear room for the opener C-rail.
tip
If an opener is being fitted, consider where
the C-Rail wall bracket is to be placed
before fixing the spring anchor bracket
K
tip
tip
There must be no more than ONE turn of cable around the cable drum.
Too much cable will affect the spring tension.
14
The Designer Series
&
P7 Industrial
™
installation instructions
