12 - EN
NLC
EN
NLC_HA/HE cod: 4037315_01
The NLC units are fully wired in the factory and only
, downstream of a unit switch, as provided for by the reg
-
ulations in force in the country of installation.
It is also suggested to check:
1. the characteristics of the electrical network are suitable for the ab
-
sorptions indicated in the electric data table. The unit should only be
powered when the installation work has finished (hydraulic and elec
-
tric).
2. Respect the connection indications of the phase and earth wires.
3. The power supply line will have a relevant protection upstream against
short circuits and dispersions to earth that isolate the system with re
-
spect to other utilities.
4. The voltage must be within a tolerance of ± 10% of the nominal power
supply voltage of the machine (for unbalanced three-phase unit max
3% between the phases). If these parameters are not respected, con
-
tact the energy supplier.
5. For electrical connection refer to the regulations in force in the country
of installation
1. It is necessary to carry out an efficient earth connection. The manufac
-
turer can not be held responsible for any damage caused by the lack or
ineffective earthing of the appliance.
2. For units with three-phase power supply check the correct connection
of the phases.
Before connecting the unit to the power supply mains, make sure that the
isolating switch is open.
Open the front panel.
Use the holes in the bottom part of the framework for the main electric
power supply cable and for the cables of the other external connections
under the responsibility of the installer.
It is prohibited to access positions with electric cables not specifically
indicated in this manual.
Avoid direct contact with the non-insulated copper piping and with the
compressor.
Identify the clamps for the electrical connection, always refer only to the
wiring diagram supplied with the unit.
For the operational connection of the unit, take the power supply cable to
the electric control board inside the unit and connect to the
L1-L2-L3 as phases, and PE as earth. Put back the inspection panels
Make sure that all the protections removed for the electrical connection
are put back before powering up the unit.
Set the master switch (on the outside of the appliance) to “ON”.
WARNING
.
Check that all power cables are correctly secured to the terminals when
switched on for the first time and after 30 days of use. Afterwards, check
them every six months.
Slack terminals could cause the cables and components to overheat.
WARNING
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