16
MOUNTING THE RACK
The rack is attached to the gate by means of self drilling TEK screws. These TEK screws have a built
in drill bit at the tip of the screw. The rack meshes with the pinion gear on the operator which then
drives the gate.
It is very important that the rack is mounted securely and that the rack meshes with the pinion gear for
the full length of the gate . Any section of rack that meshes to too tight or too loose will cause prob-
lems with the operation of the gate.
Step 1
: ensure that the operator is at least
7 mm above the ground level
and that the gate is in the
closed position.
Fig A
Step 2
: place a piece of the rack on the pinion of the operator, ensuring that the teeth of the rack and
the pinion mesh correctly.
Step 3
: now fasten the rack to the gate using the TEK screws. The TEK screw should be placed in the
centre of the slot in the rack so as to allow for adjustment later.
FIG B
Step 4
: push the gate towards the open position continuing to secure the rack to the full length of the
gate. Ensure that the rack is securely meshed with the pinion at all times during this operation.
Repeat step 4 until the full length of rack is attached to the gate.
Step 5
: using the jack-up bolts under the operator,
drop the operator 2mm
, this allows a slight gap
between the teeth of the rack and the pinion so as to prevent any binding or tight spots on the rack.
FIG C
Step 6
: push the gate all the way open and closed to check that the rack is meshing with the pinion for
the complete length of the gate.
Check that the rack is not touching the operator while running and also check that the rack covers at
least three quarters of the pinion at all times when viewed from above.
Drop operator height by
2 mm when rack is
secured to gate.
Start with 7 mm space
5
m
m
2
m
m
C
Place the TEK screws as shown below
for the complete length of rack.
Place TEK screw here
B
7
m
m
A
IT IS RECOMMENDED THAT THE RACK
IS MOUNTED AS SHOWN AND NOT
INVERTED , AS THIS MAY CAUSE
OBSTRUCTION SENSING PROBLEMS.
