20
ELECTRICAL CONNECTIONS
The units are completely wired at the factory and only require connec-
tion to the electric power supply mains, downstream from a unit switch,
according to that envisioned by the Standards in force on this subject in
the country of installation.
It s also advised to check that:
- The electrical mains features are suitable for the absorption values
indicated in the electrical data table, also taking into consideration
any other machines functioning at the same time.
- The unit is only powered when installation has been completed
(hydraulic and electric).
- Respect the connection indications of the phase, and earth wires.
- The power supply line must have a relevant protection mounted
upstream against short circuits and dispersions to earth, which isola-
tes the system with respect to other utilities.
- The voltage must be within a tolerance of ±10% of the nominal po-
wer supply voltage of the machine (for unbalanced three-phase unit
max 3% between the phases). Whenever these parameters are not
respected, contact the electric energy public body.
- For electric connections, use the cables with double isolation
according to the Standards in force on this subject in the dierent
countries.
it is mandatory:
- Connect the ow swich to clamps X12.1 - X12.2 (refer to electric
diagram - g. 1)
- The use of an omnipolar magnet circuit breaker switch, in compliance
with the current Standards (contact opening at least 0,12 in), with
suitable cut-o power and dierential protection on the basis of the
electric data table shown below, installed as near as possible to the
appliance.
- To make an eective earth connection. The manufacturer cannot
be considered responsible for any damage caused by the lack of or
ineective appliance earth connection.
- For units with three-phase power supply, check the correct connec-
tion of the phases.
ATTENTION
- All the electrical operations must be carried out by personnel in pos-
session of the necessary qualications by law, suitably trained and
informed on the risks related to these operations.
- The characteristics of the electrical lines and of the related com-
ponents must be determined by sta qualied to design electrical
systems, in compliance with the international and national regula-
tions of the place of installation of the unit and in compliance with
the regulations in force at the moment of installation
- For the installation requirements refer only to the wiring diagram
supplied with the unit. - The wiring diagram along with the manuals
must be kept in good condition and always available for any future
servicing on the unit.
- It is mandatory to verify that the machine is watertight before ma-
king the electrical connections and it must only be powered up after
the hydraulic and electrical works have been completed.
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