5.4.2. STEEL RACK TO BE SCREWED (F
Manually move the leaf to its opening
position.
Rest the first section of rack on the pinion,
positioning the spacer between the rack
and the edge of the gate. Using
a spirit level, check if the rack is horizontal
and mark the perforation point with a
felt-tipped pen.
Drill with a 6.5 mm diameter bit, and
thread with an M8 male element. Screw
the bolt.
Manually move the gate, checking if the rack is resting on the pinion
and repeat the operations in point .
Fit another rack element next to the previous one, using a piece of
rack, as shown in Fig. 14 ref. , to synchronise the teeth of the two
elements.
Move the gate by hand and perform the securing operations as for
the first element, carrying on like this until you have covered the gate
completely.
Do not allow any superfluous sections of rack to project from the
gate.
Notes on installing the rack
• Make sure that, during gate
travel,
all the rack elements do not
come out of the pinion.
• Do not, on any account, weld
the rack elements either to the
spacers or to each other.
• After you have finished install-
ing the rack, to ensure correct
meshing with the pinion, we
advise you to lower the position
of the gearmotor by about 1.5
mm (Fig.15).
• Manually check if the gate cor-
rectly reaches the travel-limit
mechanical stops and if there is
any friction during travel.
• Do not use grease or other lubri-
cants between rack and pinion.
. 12)
IG
Fig. 12
Fig. 13
Fig. 14
Fig. 15
6. START-UP
6.1. CONNECTION OF CONTROL BOARD
Before attempting any work on the board (connections, program-
ming, maintenance), always turn off power.
Observe points 10, 11, 12, 13 and 14 of the GENERAL SAFETY RULES.
Follow the instructions in Fig. 3, route the cables in the raceways and
make the electrical connections to the selected accessories.
Always separate power cables from control and safety cables (push-but-
ton, receiver, photocells, etc.). To prevent any electric noise whatever,
use separate sheaths.
6.1.1. EARTHING
Connect the earthing cable as shown in Fig. 16.
6.1.2. CONTROL UNIT
In the "C" version gearmotors, the electronic control unit is secured to an
adjustable support with a transparent cover.
The board programming push-buttons are located on the cover - this
enables you to program the board without having to remove the cover.
To connect the control unit correctly, follow the specific instructions.
6.2. POSITIONING THE TRAVEL-LIMIT ELEMENTS
To correctly position the travel-limit magnets, the control unit must
first be installed and correctly connected to all the command and
safety accessories.
The operator has a magnetic limit switch, which commands gate motion
to stop when the magnet, which is secured to the upper part of the rack,
activates the sensor. The magnets supplied with the operator are specifi-
cally polarised and activate only one of the sensor's contacts: the clos-
ing or opening contact. The magnet activating the open gate contact
bears an open padlock symbol, and, vice versa, the magnet activating
the closed gate contact bears the closed padlock symbol (see Fig. 17).
Procedure for correct positioning of the two travel-limit magnets:
The operations described below refer to an installation with left
side closing (see Fig. 6). For installations with right side closing (see
Fig. 5), change over the two magnets on the rack.
Assemble the two magnets as shown in Figure 17.
Set the operator to manual mode operation - as per paragraph 8
- and power up the system
Manually take the gate to opening position, leaving 4 cm from the travel limit
mechanical stop.
Allow the magnet, with the padlock open, to slide , in opening direction on the
rack - see figure 18. As soon as the LED on the board, referring to the opening
limit-switch, goes OFF, take the magnet forward by another 10 mm and fasten
it with the appropriate screws (Fig. 18 ref. ).
9
Fig. 16
Fig. 17