MVA 02 rev 5 - December 2017
15 of 120
2.5
Envisaged use and foreseeable uses according to experience, and prohibited
uses
The envisaged use for the fan with the identification plate as shown in Fig. 2-3 is as follows:
An industrial axial fan is a machine that serves to move a gaseous fluid inside a fluid movement system to
which the fan is connected by means of ducts and technical chambers provided for this purpose. The flow of
the fluid moved by the machine enters and leaves the fan in an axial direction.
The energy required to move the volumes of fluid entering the system from the suction intake is transferred
by the rotation of the impeller inside the casing. Impeller rotation is obtained in most cases by the energy
supplied by an electric motor, as indicated earlier in paragraph 2.4 of this manual.
The fan must be used in the flow range specified in the performance diagrams. Use of the fan with flows
lower than the minimum value indicated in the diagrams may cause unstable fluid dynamic operation and
vibrations.
Axial fans are used in many application associated prevalently with the development of industrial processes.
Here is a list of some possible industrial sectors with application examples:
Food processing sector (drying, cooking, circulation)
Textile sector (air conditioning and treatment, drying)
Steel sector (extraction of fumes)
Brick products sector (extraction of fumes , drying)
Woodworking sector (filtration, dust removal)
Tobacco sector (conditioning, extraction of fumes)
Paper sector (air conditioning and treatment, drying)
Painting sector (filtration, dust removal)
Transport sector such as maritime and railways (conditioning, motor cooling)
Energy sector (turbine cooling, oil platform conditioning)
Other applications not listed but agreed with our Engineering and/or Research & Development Area.
Some categories of use other than those described above are excluded, and more specifically:
Operation of the fan with non-gaseous fluids or with fluids with characteristics different from those
defined in the technical information sheet accompanying the fan, since structural damage may be
caused to the fan with the possible risk of injury to persons and/or damage to things;
Operation of the fan in all types of system with pressures (present or even partially generated by the
fan) greater than 1.05 times standard atmospheric pressure, since structural damage may be caused
to the fan with the possible risk of injury to persons and/or damage to things;
Operation of the fan in all types of system classified in accordance with the ATEX 2014/34/EC
Directive and that move potentially explosive fluids, since risks of ignition/explosion may occur with
possible injury to persons and/or damage to things. Fans that are specifically constructed, classified
and marked for ATEX conformity for a suitable category for the installation location are excluded,
and these must be accompanied by the legally required documentation;
Operation of the fan in industrial chemical plants where the fluid moved is highly corrosive for the
materials used in fan construction, or in the presence of highly toxic fluids where the construction
methods of casings and the types of seal used are not suitable for this specific application, since
structural damage may be caused to the fan with the possible risk of injury to persons and/or
damage to things;
Operation of the fan in mining industry plants and with underground installations, since additional
risks not considered in the use of the fan above ground may arise, with possible injury to persons
and/or damage to things.
