BFT SP4000 Instructions D'utilisation Et D'installation page 15

2) Arrange for a pit or column near the fixing plate for the various
connections, in order to have a single raceway with a 60-80mm
diameter reaching the actuator.
3) The anchoring base, which is already assembled (fig. 3), must be
positioned with the gear label facing the gate.
4) Dig a hole having the size specified in fig. 3, where to cement the base
plate log bolts to fix the actuator with. If the sliding track is already there,
digging must be partly carried out in the track foundation casting. This
way, should the track sag, the gearmotor base would also lower, thus
maintaining the play between pinion and rack (approximately 4-5mm).
In order to keep the base plate correct position during installation, it may
be useful to weld two iron rods under the track, and then weld the log
bolts onto them (fig. 3).
5) Position the base plate according to the mesurement specified in fig. 4.
The pinion symbol printed on the base plate must be visible and
directed towards the gate. This also ensures the correct positioning of
the pipe or the cable channel for electrical connections.
6) Let the single pipe or cable channel provided for electric cables
protrude from the base plate.
7) Proceed to casting the concrete.
8) Accurately check that:
- The positioning dimensions (fig. 4) are correct,
- The base plate to be levelled in both directions,
- The 4 stud threads and the base are free from cement.
- Let the casting harden.
Note: The actuator must be fixed to the foundation base which comprises
a steel plate treated against corrosion and the log bolts to anchor the plate
to the ground.
WARNING: Do not loosen the nuts securing the log bolts. After
cementing, use a dynamometric wrench to check that these are
tightened with a 70Nm torque.
Fig. 5 shows dimensions and holes to be drilled in the actuator base.
6) GEARMOTOR FIXING
When the casting has hardened, make all the mains and accessory
connection cables go through, letting them protrude from the foundation
plate by approximately 1 metre.
Observe fig. 6 and proceed as follows:
1) Open the door and unscrew the 4 screws which fix the protective cover
to the base (fig. 1 ref. "C") using a suitable key.
2) Position the actuator over the plate, and insert all the cables or pipes
in the appropriate hole (fig. 6), and the tie rods in the fixing slots.
3) Thread a flat spacer washer, a spring washer and an M12 nut on each
one of the four base tie rods. Leave the nuts loose for correct position-
ing.
4) Fit the four levelling dowels (fig. 7 ref. "G") and adjust them so as to level
(fig. 7 ref. "L") the actuator, which should be raised by approximately 8-
10mm with respect to the foundation base.
5) Slide the actuator in the appropriate slots, find its final position respect-
ing the measurements specified in fig. 4, and fix the four nuts (fig. 7 ref.
"T") which secure the actuator to the foundation plate and the levelling
dowel lock nuts.
Note: the rack teeth should mesh with the pinion along their entire width.
7) ARRANGEMENT FOR RACK FITTING
A steel rack having a pitch of m=6mm teeth and cross section of at least
30x30mm must be fixed to the gate. It is usually supplied in 2-metre
elements.
As far as length is concerned, this must take into account the passage
space, the pinion meshing section and also the space for fixing the runners
controlling the end-of-stroke.
Rack fixing must be suitable for the type of gate used. As an example, this
paragraph describes the rack fixing method by means of welded angle bars
(fig. 8).
WARNING – Welding is to be carried out by a skilled operator wearing all
personal protective equipment prescribed by the current safety standards.
During welding operations, use suitable screens to protect the actuator
from any welding spits.
7.1) Fitting
1) Prepare some rack fixing angle bars using adequately-sized "L" shaped
sections. They must be fixed or welded at a distance of approximately
80-100cm.
2) Bring the gate to a fully closed position (or open, if more practical) by
hand.
3) Activate the emergency release (See paragraph on "EMERGENCY
MANOEUVRE").
4) Rest the end of one rack element on the control pinion, keeping it
levelled (parallel to the track).
INSTALLATION MANUAL
5) Rest one angle bar on the rack and secure it with a suitable clamp; while
keeping the rack level and lined up with the pinion profile, spot weld the
angle bar to the gate and then the rack to the angle bar (fig. 8).
6) Push the leaf by hand as far as the other end of the rack, centre the rack
into the pinion teeth, rest one angle bar on the rack, secure it with a
suitable clamp, spot weld it to the gate and then weld the rack to the
angle bar.
7) While sliding the leaf by hand, position and lightly spot weld the
intermediate angle bars (one every 80-100cm).
8) Slide the rack element out of the pinion, and strongly weld the angle
bars and the rack.
WARNING: Do not weld the joints of the rack elements together.
9) Position another rack element next to the one welded previously.
Couple the joints of the two elements by opposing a piece of rack (fig.
9) to keep the correct pitch, and secure everything using suitable
clamps.
10) Proceed to welding and positioning all the elements by repeating the
procedure described above.
8) Pinion adjustment
Having finished fixing the rack, the rack-pinion play must be adjusted as
follows, with reference to fig. 10.
1) Slacken the four "G" dowels at the base of the actuator by approxi-
mately 4 mm.
2) Check levelling by means of a level.
3) Check that the rack meshes with the pinion all along its width and the
leaf stroke.
4) Fix the 4 log-bolts nuts (fig. 10 ref. "T") which fasten the actuator to the
ground.
5) Fix the 4 levelling dowel lock nuts (fig. 10 ref. "G").
6) Check the slack between pinion and rack along the whole rack length;
if necessary, adjust the play between pinion and rack.
WARNING – Remember that the life of the rack and pinion largely
depends on the mesh.
9) FITTING OF END-OF-STROKE RUNNERS
These are used to control the opening/closing limit microswitches. They
can be directly welded on the rack or fixed by means of screws.
When fixed by screws, the runner position can be re-adjusted later.
WARNING - The automation must not be electrically operated without
the end-of-stroke runners.
This operation is to be carried out with the emergency release activated and
mains power supply disconnected.
1) If the mains power is already connected, ensure that the automation
switch is down.
2) Activate the emergency release as described in the respective para-
graph.
3) Push the leaf fully open by hand, and stop it approximately 4-5cm
before the required stop point.
4) Connect an ohmmeter to the control unit terminals related to the
opening limit switch (SWO) by consulting the paragraph on "Terminal
connections". Check the instrument reading by pushing the end-of-
stroke control lever by hand towards the opening direction (the instru-
ment must show interruption of continuity).
5) Position the end-of-stroke runner on the rack and push it against the
end-of-stroke lever (fig. 11 ref. "P") until the instrument signals
microswitch intervention.
6) After identifying the runner position, fix it by spot welding. In the case
of screw fixing, mark the identified position and proceed accordingly.
7) Connect the instrument to the control unit terminals related to the
closing limit switch (SWC). Check the instrument reading by pushing
the end-of-stroke control lever by hand towards the opening direction
(the instrument must show interruption of continuity).
8) Push the leaf fully closed by hand. Stop the leaf by approximately 4-5cm
from the required closing point. If necessary, take into account any
clearance (fig.12) or impact device (fig.13 - ref. "CS") needed, accord-
ing to the provisions set out by current national standards.
9) Position the end-of-stroke runner on the rack and push it against the
end-of-stroke lever until the instrument signals microswitch interven-
tion.
10) After identifying the runner position, fix it by spot welding. In the case
of screw fixing, mark the position and proceed accordingly.
11) Disconnect the instrument, restore motorised operation (see para-
graph on "Emergency release"). Correct electrical limit switch inter-
vention is to be checked after carrying out electrical connections and
checking the "DIRECTION OF ROTATION" (see relevant paragraph).
If the position is correct, secure the welded runners with sturdy welding,
or check that the fixing screws to be well tightened (depending on the
chosen fixing way).
ENGLISH
15
SP4000 - Ver. 04 -