ELECTRICAL CONNECTIONS
The unitary minichillers leave the factory already wired,
and require the installation of an omnipolar thermal
overload switch,a lockable mains disconnecting switch for
the connection to the mains power supply,and the connec-
tion of the flow switch to the corresponding terminals.All
the above operations must be carried out by qualified per-
sonnel in compliance with the legislation in force.
For all electrical work,refer to the electrical wiring diagrams
in this manual.You are also recommended to check:
-that the characteristics of the mains electricity supply are
adequate for the absorptions indicated in the electrical
characteristics table below,also bearing in mind the pos-
sible use of other equipment at the same time.
Power to the unit must be turned on only after
installation work (hydraulic and electrical) has been
completed.
All electrical connections must be carried out by
qualified personnel in accordance with legislation in
force in the country concerned.
Respect instructions for connecting phase, neutral
and earth conductors.The power line should be fitted
upstream with a suitable device to protect against
short-circuits and leakage to earth, isolating the
installation from other equipment.
Voltage must be within a tolerance of
±
10% of the
rated power supply voltage for the unit (for three
phase units,the unbalance between the phases
must not exceed 3%).If these parameters are not
respected,contact the electricity supply company.
For electrical connections,use double insulation
cable in conformity with current legislation in the
country concerned
An omnipolar thermal overload switch and a lock-
able mains disconnecting switch,in compliance with
the CEI-EN standards (contact opening of at least
3mm),with adequate switching and residual current
protection capacity based on the electrical data
table shown below,must be installed as near as
possible to the appliance
The devices on the unit must be lockable.
An efficient earth connection is obligatory.Failure to
earth the appliance absolves the manufacturer of
all liability for damage.
In the case of three phase units,ensure the phases
are connected correctly.
Do not use water pipes to earth the unit.
A
I
ELECTRICAL PANEL
The electrical panel is located inside the unit at the top of
the technical compartment where the various components
of the refrigerant circuit are also to be found.
To access the electrical panel,remove the front panel of
the unit by undoing the screws.
9
Electrical panel
A
B
