NCF fan
EN
CAUTION! Risk of equipment damage
• The user assumes liability for the choice of
the lifting equipment and ropes, straps or
chains considered to be most suitable both
for the purpose and for their lifting capacity.
For lifting and movement, do not use zones
or points other than those marked by a sym-
bol.
• All transport operations must be carried out
only by qualified personnel, equipped with
the correct PPE for protection against blows
and/or falling object.
• The movement of separate or disassembled
parts of the machine must be carried out with
suitable means of transport.
• The lifting lugs on motors must never be
used to lift the fan.
Lifting and movement operations with the NCF fan
may create hazardous situations for exposed persons.
It is therefore advisable to follow the instructions
provided by Nederman and to use suitable equipment.
It is advisable to carry out all lifting and movement op-
erations on the fan and its components with extreme
care, avoiding impacts that may affect its correct op-
eration or damage covered parts.
Use only the points indicated to lift the fan, distribut-
ing the load in a uniform manner.
NCF fans are complete with motor. To lift them, only
the specific holes provided in the structure should be
used (as shown in
). These holes are located
on opposite sides above the centre of gravity, and are
indicated by specific symbols.
4.4.2 Storage in a warehouse
CAUTION! Risk of equipment damage.
Close intake and exit openings during storage.
Should it be necessary to store the NCF fan in a ware-
house, it must be protected from atmospheric con-
ditions, humidity, dust and any harmful substances
present in the air.
It is recommend to periodically check that the NCF fan
is in a good condition and turn the impeller manually
approximately once a month to prevent the deforma-
tion of its bearings.
4.5 Mounting
NOTE!
• The support surface must be sufficiently rigid
to withstand normal NCF fan vibrations, and
must not be subject to phenomena of struc-
tural resonance.
• If the NCF fan is mounted on a structure
raised above floor level, the vibration charac-
teristics of this structure must be verified.
• Special foundations are not necessary for posi-
tioning the NCF fan. A well-levelled concrete sup-
port surface is sufficient, suitable to withstand the
weight load of the NCF 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 NCF 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 NCF fan must be suppor-
ted 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 out-
door 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 NCF
fan casings for fans used in outdoor installa-
tions.
• Leave a bend on the cable before the motor
so that water can run down and off of the
cable. See
.
If the NCF 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 NCF fan casing. Drill a hole (approximately Ø 5
mm). Then treat the hole with an anticorrosive agent.
4.5.2 Minimum distances between compon-
ents
WARNING! Risk of personal injury
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.
If the available space permits, in installations where
the intake is connected to a pipe, we recommend fit-
ting a straight length of pipe with a length approxim-
ately 2.5 times the diameter of the impeller, to guar-
antee correct air flow into the intake. See
.
With installations with an open air intake, we recom-
mend leaving a distance equal to approximately 1.5
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