Idiomas disponibles
Idiomas disponibles
3.10 - BOOM BALANCING
The boom balancing operation is used to find the best balance
between the overall weight of the boom, inclusive of the installed
accessories, and the force opposed by the tension of the balancing
spring.
To verify the spring tension, proceed as explained below.
1. unlock the gearmotor with the relevant key provided (refer to the
"Manually unlocking and locking the gearmotor" paragraph)
2. manually move the boom to about half-way (45 ) and leave it
stationary
3. if the boom does not stay in position, loosen nut (A) on the spring
4. if the boom tends to rise, reduce the tension of the spring by
turning the stretcher (B) anti-clockwise. On the other hand, if the
boom tends to fall, increase the spring tension by turning the
stretcher (B) clockwise.
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45°
45°
5. repeat the operation by positioning the boom also at roughly 20°
and 70°. If the boom remains stationary in its position, it means
that it is correctly balanced; a slight imbalance is allowed, but the
boom must never move substantially
6. tighten nut (A) for the spring
7. lock the gearmotor.
3.11 - MANUALLY UNLOCKING AND LOCKING
THE GEARMOTOR
The gearmotor is equipped with a mechanical unlocking system that
allows for opening and closing the boom manually.
These manual operations should only be performed in case of a
power outage, malfunctions or during the installation phases.
To unlock the device:
1. turn the key slot cover
2. insert the key (A) and turn it towards the left or right
- 56 - ENGLISH
A
B
A
B
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3. at this point, you can manually move the boom to the desired
position.
To lock the device:
1. turn the key (A) back to its initial position
2. remove the key
3. turn the key slot cover.
4 - ELECTRICAL CONNECTIONS
4.1 - PRELIMINARY CHECKS
c
All electrical connections must be made with the system
disconnected from the mains electricity and with the back-up
battery (if present) disconnected.
m
The connection operations must only be carried out by
qualified personnel.
To carry out the electrical connections:
1. open the control unit box
2. pass the electric cables inside the barrier lift, starting from the
bottom and working towards the control unit
3. Pass the power cable using the cable gland A and connect it
using the terminal L N
4. tighten the cable gland
5. pass the remaining cables using the cable glands B
6. install the connections, with reference to the wiring diagram in
Figure 28. For further convenience, the terminals can be removed.
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B
m
Before closing the cover, program the system (refer
to paragraph "PROGRAMMING").
°
9 0
A
A
