NCF
15
EN
3.2
Prohibited uses
Below is a list of specific uses that are prohibited:
•
Operation of the fan with non-gaseous fluids or with fluids with characteristics
different from those defined to be used with 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 1.2 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 systems classified in accordance with the ATEX
directive and that move potentially explosive fluids, since risks of ignition/explosion
may arise with possible injury to persons and/or damage to things;
•
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.
3.3
Life cycle of fan
The reliability of all components is guaranteed if they are properly maintained and if
Nederman original parts and accessories are used.
For safety reasons, guards in electrowelded wire must be replaced every 2 to 3 years.
If the fan is used at constant speed for two work shifts every day equivalent to 16 hours,
calculated for 250 days per year, the expected life cycle for the impeller is equivalent to
40,000 hours, ie., 10 years.
In the specific case of operation at variable speeds, the impeller life cycle must be assessed
on a case-by-case basis, and must also be agreed with Nederman.
Even if it has never been used, an impeller that has been stored for more than ten years
must be checked by Nederman for possible defects before it can be used.
3.4
Technical specifications
3.4.1
Technical data 50 Hz fans (metric)
Table 3-1: Technical data 50 Hz fans (metric)
NCF 30/15
NCF 30/25
NCF 40/25
NCF 50/25
NCF 80/20
NCF 120/15
NCF 120/25
NCF 160/25
Capacity (m
3
/h) 1100 - 4400
1700 - 6500
2000 - 6700
1800 - 5900
2300 - 9100
5700 - 14400
3500 - 12400
4600 - 17900
Total
pressure (Pa)
1840 - 700
2440 - 920
3440 - 1410
4550 - 1690
3070 - 1150
2520 - 740
4500 - 2000
5030 - 1880
Motor power
(kW)
2,2
4
5,5
5,5
7,5
7,5
15
18,5
Speed (rpm)
2880 rpm
2905 rpm
2925 rpm
2925 rpm
2930 rpm
2930 rpm
2940 rpm
2940 rpm
Voltage (V)
Current (A)
230Δ/400Y
7,9/4,55
230Δ/400Y
13,6/7,8
230Δ/400Y
17,9/10,3
230Δ/400Y
17,9/10,3
230Δ/400Y
24,0/13,8
230Δ/400Y
230Δ/400Y
230Δ/400Y
*Reference standards: ISO 3744, ISO 3746, ISO 13347. Installation Type D: ducted inlet, ducted outlet.
