6
ENGLISH
4.4 ADJUSTING THE BALANCING SPRING.
IMPORTANT: The barrier is supplied already balanced for the
exact length of the beam indicated in the order.
(The barrier is balanced when the beam stays idle in the 45°
position)
For any fine tuning of barrier balancing, proceed as follows:
) Make sure that the operator is released: see chapter 6.
) If the barrier tends to close, turn the spring pre-loading
ring-nut (Fig. ref.
b
) clockwise, if it tends to open, turn it
anti-clockwise.
Fig. 12
5 START-UP
5.1 CONNECTION TO CONTROL BOARD
IMPORTANT: Before attempting any work on the control board
(connections, maintenance, etc), always turn off power.
5.2 ADJUSTING THE TRANSMITTED TORQUE
To set the hydraulic system for controlling transmitted torque, turn
the two by-pass screws (Fig. ).
The red screw controls closing movement torque.
The green screw controls opening movement torque.
To increase torque, turn the screws clockwise.
To reduce torque, turn the screws anti-clockwise.
5.3 ADJUSTING THE TRAVEL LIMIT SLOW DOWN
For beams with a length of over 4 m, we advise you
not to set too brief a slow down.
) Adjust the cams of the travel limit device as shown in Fig.4
ref.
by loosing the two Allen screws. To increase the slow
down angle, take the cam close to the relevant travel limit
device. To reduce the slow down angle, take the cam away
from the relevant travel limit device.
) Set the slow down time of the control unit by adjusting the
dedicated parameters.
) Relock the system (see chap.6) and run a few operational
tests to verify correct registration of the travel limit devices,
of spring balancing, and of the adjustment of transmitted
force.
For the electrical connections, refer to the dedicated
instructions of the control board.
Observing the indications in fig., install the raceways and make
the electrical connections from the electronic appliance to the
selected accessories.
Always separate power cables from control and safety cables
(push-button receiver, photocells, etc.).
Fig. 13
Fig. 14
Fig. 11
4.3.1 BARRIER 6
3
0
PLUS
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