General Pump KF Owner Manual - Manual (Page 8)

GENERAL PUMP
A member of the Interpump Group
KF SERIES
Page 8
9.5 Filtration
All pumps require a suitable filter. The filter should be
installed as close as possible to the pump, should allow
easy inspection and have the following characteristics:
1. The filter capacity must be at least 3 times the rated
pump volume.
2. Filter port diameters must not be smaller than the
pump inlet ports.
3. Filtration degree in between 50 and 80 mesh (360 -
200 microns).
IMPORTANT NOTE: in order to properly safeguard the
pump it is very important to plan cleaning of the filter
with a frequency depending on the water quality,
filtration degree and number of hours of each
application. It is recommended to use filters with a
clogging signaling device.
9.6 Delivery line
For a correct delivery line comply with the following
instructions:
1. The first length of delivery hose should be flexible
in order to isolate the pump vibrations from the
rest of the system.
2. Use only high pressure hoses and fittings able to
guarantee the largest possible safety margins in
any working conditions.
3. A suitable relief valve should be installed in the
delivery line.
4. Use glycerine filled pressure gauges, as the most
suitable for pulsating loads.
5. When designing the delivery line, take into proper
account the unavoidable drop in pressure, due to
its length and size.
6. If necessary, the effects of the pump pulsations can
be reduced by installing a proper pulsation
dampener on the pressure line.