40
M. FACSW90IU-00 ITA-ENG 13/03/2023
FD
EN
26 Electrical connections
Warning: The machine must be installed compelling with the national law and regulamentation about electrical system.
26.1 Generalities
Warning: Before every operation on the electric section, be sure that the electric supply is disconnected.
Warning: Main supply must be protected with a differential switch.
Warning: Close to the unit, a multi-pole power switch must be present. It must ensure the complete disconnection in
the conditions of the III overtension category and the respect of the rules regarding plants and installation.
It must be verified that electric supply is corresponding to the unit electric nominal data (tension, phases, frequency)
reported on the label in the front panel of the unit.
Power connections must be made using a three-wire cable plus neutral wire plus ground cable.
Warning: Power cable and line protection must be sized according norm and laws according with absorbed current of
the machine (see technical data).
Warning: The line voltage fluctuations must not be more than ±5% of the nominal value, while the voltage unbalance
between one phase and another must not exceed 2%. If those tolerances should not be respected, please contact our
Firm to provide proper devices.
Warning: Electric supply must be in the limits shown: in the opposite case warranty will terminate immediately.
Warning: Electrical connections therefore must be always done according to the instructions reported on the wiring
diagram enclosed with the unit and norms and laws.
Ground connection is compulsory. Installer must connect ground cable with a dedicated terminal on the apposite
terminal block.
27 Main supply connection
The Electric Power Supply Connection must be carried out according to the indications given in the Electric Diagram, by
connecting the cable supplied with the machine and according with safety norm and national rules regarding plants.
Models FACSW must be electrical supplied con 3 phases-neutral-ground.
Warning: The compressor has only one allowable rotation direction; therefore, the machine has a control device for the
phases sequence; in case that it may show a wrong sequence, the device inform you with a blinking light; in this case two
phases must be interchanged. Pay much attention to above indications because the compressor will be damaged if the
rotation direction is not correct.
Warning: Respect the phase order like in the label inside the electric panel.
27.1 Fuses
The fuses which are mounted on the disconnecting switch are 25 Am.
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