Munters EM Serie Manual De Uso Y Mantenimiento página 8

recirculating air, it is sufficient to attach chains or cables
to the M8 threaded holes at the ends of the top cover.
5.4 CONNECTION TO THE ELECTRICAL SYSTEM
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 (see fig. 2).
The electrical panel of the fan must generally be
equipped with the following devices (bearing EC
marking as per directive 2006/95/EC):
• lockable isolating switch;
• 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;
• 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);
• 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.
Do not supply power to the fan during
!
installation stage.
a declaration of correct installation in
8
Installer must issue
© Munters AB, 2013
accordance with applicable legislation in the country
of use.
The rating plate data of the electric motor and
!
the instructions given in the attached technical
documentation must be used for sizing the
supply cable.
In the event of installations that do not comply
!
with the directions given in this chapter, the
manufacturer's liability ceases, along with the
validity of the EC declaration of conformity.
The electrical lines must be laid in accordance with
requirements of the laws applying in the place of
installation, and in any event:
• they must be laid with cables of adequate section for
the power of the fan and the length of the line itself;
• they must make an effective earth connection;
• they must have isolating devices and automatic
protection against overload and short circuits.
Before activating the electrical supply to the machine
by turning the isolator switch to position On, a series of
checks must be made:
• check that the voltage and frequency of the
power source correspond to those indicated in the
equipment technical data and electrical diagram;
• check that the supply cables and the conductor
providing external
connected;
• check that the connections in the control and power
circuits are properly tight;
• check that the intensity of the short-circuit expected
at the connection terminals is compatible with the
breaking power of the protection switch upstream of
protection are correctly