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© Munters AB, 2019
6. ELECTRICAL WIRING
All wiring should be installed in accordance with National, State, and Local electrical codes. Fans used to ventilate livestock
buildings or other rooms where continuous air movement is essential should be connected to individual electrical circuits,
with a minimum of two circuits per room. For electrical connection requirements, refer to diagram on motor nameplate and
to information enclosed with the environmental control to be used.
The fan is supplied without a command and control circuit, but with all the internal electrical connections already made.
At the fitting stage, the installer must set up a control panel in compliance with the requirements of standard IEC EN 60439-
1, and arrange the wiring of the fan in accordance with the instructions in standards IEC EN 60204-1 and IEC 60364.
The electrical panel of the fan must generally be equipped with the following devices (bearing EC marking as per directive
2014/35/UE):
fig.25
Lockable isolating switch.
fig.26
Magnetothermic switch (chosen to suit the power of the motor).
The need to fit a switch of differential type depends on the configuration of the electrical
system supplying the fan: it is the installer’s responsibility to make this assessment in
accordance with the instructions in standard IEC 60364.
fig.27
Red emergency stop button, mushroom type, provided with mechanical locking and
release by turning (in compliance with UNI EN ISO 13850). Operating the button must
bring about the electromechanical isolation of the power supply to the electric motor
(category 0/1 according to IEC EN 60204-1).
fig. 28
Start/stop selector switch (with characteristics compatible with the nominal current of
the motor), or main panel for managing the equipment, with control devices which act
on the electrical supply to the fan.
WARNING
Do not supply power to the fan during installation stage.
Installer must issue a declaration of correct installation in accordance with applicable legislation in the country of
use.
Connection to the power supply must be done by means of a thermal overload protection switch, whose size depends on
motor power. For safety reasons the overload switch can be locked by a padlock, not supplied by Munters.
Electrical earthing must be carried out according to local regulations before the motor is connected to the supply voltage.
Below are suggested wiring diagrams for connecting the fan to the mains electrical supply. These diagrams are however
subject to local laws and regulations and should be modified if necessary to comply with such laws and regulations.
