NCF
EN
22
4.4.3
Storage in a warehouse
CAUTION!
Risk of equipment damage.
Close intake and exit openings during storage.
Should it be necessary to store the fan in a warehouse, it must be protected from
atmospheric conditions, humidity, dust and any harmful substances present in the air.
It is recommend to periodically check that the fan is in a good condition and turn the
impeller manually approximately once a month to prevent the deformation of its bearings.
4.5
Mounting
NOTE!
The support surface must be sufficiently rigid to withstand normal fan vibrations,
and must not be subject to phenomena of structural resonance.
NOTE!
If the fan is mounted on a structure raised above floor level, the vibration
characteristics of this structure must be verified.
Special foundations are not necessary for positioning the fan. A well-levelled concrete
support surface is sufficient, suitable to withstand the weight load of the fan and the
dynamic stresses generated by its normal operation.
During installation, the user and/or installer must take the necessary measures to reduce
vibrations from the overall system (fan and ducts).
The support surface must be flat and horizontal, to prevent the bending and misalignment
of supports. If necessary, suitable metal spacers must be placed between the fan base and
the support surface to ensure perfect adherence. Use the fixing points provided, ensuring
that the tightening of nuts and bolts does not deform fan structures.
Ducting connected to the fan must be supported separately, and must be coaxial with
respect to the intake and exit openings, so as to prevent deformation caused by the
tightening of nuts and bolts.
4.5.1
Outdoor installation
CAUTION!
Risk of equipment damage.
•
An IP55 motor will not be water tight in outdoor operating conditions. The application
where the motor is used, mounting position and actual exposure to external factors
must be taken into account.
•
Make sure there are draining holes in the fan casings for fans used in outdoor
installations.
•
Leave a bend on the cable before the motor so that water can run down and off of the
cable. See figure 11.
If the fan is to be used outdoors or under other circumstances where moisture and
condensation can be present the motor must be protected by a suitable cover.
Make sure to have a draining hole in the lowest level of the fan casing. Drill a hole
(approximately Ø 5 mm). Then treat the hole with an anticorrosive agent.
4.5.2
Minimum distances between components
WARNING!
The access of personnel, even if qualified, to the intake area of fans capable of developing,
with zero flow, a negative pressure greater than 5000 Pa, must be prohibited.
