8
FUMEX
C 600HT
Manual
Fan with TP sensor
Some fans are equipped with a bimetal sensor (the
TP sensor is mounted near the front ball bearing on
the electric motor). The sensor conductor is routed
to the connection box. During normal operation, the
sensor circuit is closed, and at too high a temperature
the circuit breaks. The sensor conductor needs to be
connected to some kind of relay that cuts the current
when the sensor circuit is broken.
Fan with PTC sensor
Some fans are equipped with PTC sensors (mounted in
the motor windings). The sensors’ conductors are routed
to the connection box. The resistance in the PTC sensors
increases rapidly as the permissible motor temperature
is exceeded. The sensor conductor needs to be connected
to some kind of relay that cuts the current in the event
the permissible motor temperature is exceeded.
4.2.5 Checking the direction of rotation
Always make sure that the impeller rotates in the
correct direction, both during installation and during
normal operation. After the fan has been fitted to its
application, start the fan in a single pulse (less than 1
second) and check that the impeller rotates in the cor-
rect direction. The direction of rotation is checked by
making sure that the cooling panel of the motor rotates
in the correct direction. If the impeller rotates in the
wrong direction, the fan’s characteristics are impaired
and there is a risk that the fan will be damaged. If the
impeller rotates in the wrong direction, switch off the
power supply, and as soon as the impeller has stopped,
swap over the phases (e.g. L1 and L3 on a 3-phase fan)
in the motor connection box. See the circuit diagram
under section
.
5.2 After 30 minutes of constant operation
Make sure of the following points:
• Measured vibration values, with details of the point
of measurement, have been noted (for future
checks).
• Measured electrical current values, with details of
the method of measurement, have been noted (for
future checks).
• Check that the current value does not exceed the
nominal value for any of the fan’s phases.
• Measured vibrations do not exceed permissible
values.
• The type and model match the order.
5 Commissioning
5.1 Before commissioning
Check to ensure the following:
• The type and model match the order.
• The fan is free of damage.
• The fan is clean and has no loose objects inside it.
• The fan is mounted securely and reliably, so that it
is safe.
• Cables have been connected correctly.
• The ambient temperature and the temperature of
the transported medium comply with the specifica-
tions on the fan labels.
• The correct electrical protective equipment has
been used.
• The fan is earthed correctly.
• The mains supply matches the specification of the fan.
• The fan has been equipped with a power switch.
• Personnel who will use the fan have read and un-
derstood the operating and assembly instructions.
• Any filter and inlet and outlet grilles have been fitted.
6 Operation
Make sure that starting the fan will not pose
a hazard to personnel and surroundings. Fol-
low the guidelines under Chapter
.
The fan is designed for continuous operation.
Starting a fan at too high a frequency can
lead to the motor overheating.
In the event of damage to electrical protecti-
ve equipment, the fan must be switched off
immediately.
The fan must not be operated at a voltage, frequency,
or power consumption other than that indicated on the
fan rating plate (even if the motor rating plate/manual
indicates otherwise). Operation at a higher frequency
can lead to damage to the motor and fan.
The fan must not be operated at a voltage lower than
that specified on the fan label; this may lead to it over-
heating and damage to the motor.
The fan must not be operated at power consumption
that exceeds that indicated on the rating plate.
The fan is adapted to operate under specific condi-
tions. Insufficient back pressure, such as in the case of
repeated start/stop of the fan with fully open inlet and
outlet, can lead to overheating of the motor as a result
of high power consumption.
The parameters of the fan correlate with the speed of
rotation (e.g. temperature of medium, ambient tempe-
rature, minimum and maximum flow).
Further information on operation of the fan is indicated
on the fan, see also section
Summary of Contents for C 600HT
Page 1: ...C 600HT Manual...
