Watson-Marlow DuCoNite 25 - Manual (Page 23)

INSTALLATION
23
5.3.4 Frequency controller
If the hose pump is fitted with a Bredel Variable
Frequency Drive (VFD), consider the following points:
•
Take precautions so the motor does not re-start
automatically after an unscheduled stop.
In the event of a power or mechanical failure,
the Bredel VFD controls the motor to stop.
When the cause of the failure is removed, the
motor can restart automatically. The automatic
restart is dangerous to certain installations of
the pump.
Maximum permissible loads [N] on the
pump flange
Force DuCoNite
®
25 DuCoNite
®
32
F1 600 600
F2 500 500
F3 200 200
CAUTION
In case of hose failure, the product or a
mixture of product and lubricant can leak
by the breather cap. If this risk is not
acceptable, drain piping can be connected,
refer to §
7.10.2 .
WARNING
The maximum pump temperature is 60 °C.
Above this temperature the corrosion
speed can rise excessively, depending on
the product.
WARNING
A Bredel VFD that is fitted without the con-
trol switch starts automatically when power
is applied.