SPRINGS, PULLEYS, CABLES AND MOUNTING HARDWARE USED TO
BALANCE YOUR GARAGE DOOR ARE UNDER EXTREME TENSION AT ALL
TIMES AND CAN CAUSE SEVERE INJURY OR DEATH IF DISTURBED.
DO NOT ATTEMPT ADJUSTMENT.
F
igure 4,
page 7 illustrates several positions suitable for
mounting the operator; right hand or left hand, either wall mount
or ceiling mount.
CHAIN COUPLING MOUNTING
Refer to
Figure 2
(below)
, Figure 1,
page 4 and
Figures 5 and
5A
, page 8 for component identification and the operator
mounting slot locations. Place the sprockets
[ 3 ]
and
[ 4 ]
on the
chosen side of the torsion shaft of the door and on the
corresponding end of the output shaft of the operator. The
sprockets should be kept as close as possible to the bearings.
Fasten the connecting link to each end of the door chain and loop
the chain over the sprocket
[ 3 ]
on the torsion shaft. Temporarily
suspend the operator in its mounting position using the chain
over the sprocket
[ 4 ]
at one end of the jackshaft and a rope or
chain at the mid point (to support the operator weight). With the
chain tight and straight and the jackshaft
parallel
with the torsion
shaft, trace the mounting slot
on the mounting surface then
lower the operator to the floor.
IT IS ESSENTIAL THAT THE SURFACE
SUPPORTING THE OPERATOR BE RIGID
AND SECURE. FAILURE TO PROVIDE A FIRM
MOUNTING SURFACE WILL RESULT IN
DAMAGE TO THE DOOR TORSION SHAFT
AND THE PREMATURE FAILURE OF THE
OPERATOR.
If the construction permits, the operator should be mounted with
3/8 inch diameter bolts through the wall. If it is not feasible to go
through the wall, then use lag bolts to fasten the operator to the
mounting surface. Locate the four holes within the tracings of
the slots made in the previous step at the positions which will
allow for adjust-ment of the chain tension. After drilling the
mounting holes and installing lag shields, if necessary, bolt the
operator to the mounting surface but do not completely tighten
the bolts at this time. Check the alignment of the sprockets,
adjust their positions on the shafts if necessary and tighten the
set screws securely on both sprockets. pulling downward on the
operator to remove slack from the chain, tighten the four
mounting bolts.
Inspect the installation. There should be no slack in the chain
but neither should it be under severe tension which might
shorten the life of the bearings. If there is any flexibility in the
system due to construction of the surface supporting the
operator or noticeable deflection of the door shaft, it is advisable
to install a shaft support between the operator jackshaft and the
door shaft to prevent the loss of limit settings due to the
possibility of the chain jumping over the sprocket teeth. Shaft
supports are available from the factory.
BEFORE PROCEEDING WITH THE
OPERATOR INSTALLATION AND SETTINGS,
MAKE A FINAL CHECK FOR TIGHTNESS OF
ALL MOUNTING HARDWARE AND SET
SCREWS.
Proceed to “Chain Hoist and Floor Disconnect Installation”.
WARNING
INSTALLATION INSTRUCTIONS
Figure 2
107864
6
