Nederman NCF Series Instruction Manual

NCF
23
EN
If the available space permits, in installaons where the intake is connected to a pipe,
we recommend ng a straight length of pipe with a length approximately 2.5 mes the
diameter of the impeller, to guarantee correct air ow into the intake. See Figure 8.
With installaons with an open air intake, we recommend leaving a distance equal to
approximately 1.5 mes the diameter of the impeller between the fan intake and the
nearest wall or machine. See Figure 10.
4.5.3 Electrical connecons
The fan’s power supply line must have a suciently high power rang.
Connecon to the main power grid must only be carried out by qualied personnel. Also,
the client is responsible for the enre electrical system up to motor terminal board.
Remember the importance of installing a safe connecon to earth for the fan. The earth
connecon system must comply with legislaon in eect in the country of installaon and
must be periodically checked by qualied personnel. Make the connecon to earth before
any other connecon. Check that the connecon layout is suited to the mains power
voltage.
Usually, standard electric motors can run in both direcons indierently. To invert the
direcon of rotaon, simply swap over any two power cables directly on the terminal
board.
The client must also install an electrical disconnecng device near the fan so that
maintenance personnel can have direct control over the power supply to the fan.
All work performed on the electrical system must only be carried out with the fan at rest
and electrically disconnected from the mains.
Before installing/starng up, ensure that the informaon on the idencaon plate on the
motor is compable with the main power supply
4.5.4 Motor connecons
See gures 2, 3 and 4. Check the data on the motor idencaon plate for which
connecon to be used.
4.6 Connecon to ducts
NOTE! Installaons with an open air intake are not recommended.
The fan must be connected to ducng with all parts correctly aligned, without obstrucons
to air ow from gaskets or exible components. The weight of ducng must not be
supported by the fan, and deformaons of parts of the machine by ducng connecons
must be avoided. Any exible joints between the fan and intake and/or exit ducts must be
installed in a way that prevents stress on exible components, and that avoids contacts
between metallic parts of the joints (see Figure 9).
4.7 Checks to be made before and aer starng
4.7.1 Preliminary checks
WARNING! Risk of personal injury!
Preliminary checks must only be performed with the fan at rest and disconnected from the
power supply.
Close o the air intake parally to reduce the power peak at start-up and the motor
starng me.

Nederman NCF Series Specifications

General

Brand	Nederman
Model	NCF Series
Category	Fan
Language	English