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USE AND MAINTENANCE
INSTRUCTIONS
Carefully follow the instructions below to
obtain the best performance and a long
service life from your pump.
Contact your local agent or Technical
Office if you have any problem.
OPERATING CONDITIONS
These pumps have been designed to
pump neutral clean liquids in which
no abrasive solids are suspended at
temperatures of no more than 35ºC.
INSTALLATION
The pumps must be installed in a
dry well-ventilated place with an
ambient temperature of no more
than 40ºC (Fig.A).
Fix the pump in place on a solid flat
surface using suitable bolts to avoid
vibration.
The pump must be installed in a
horizontal position to ensure; that the
bearings operate correctly.The
diameter of the intake pipe must
not be smaller than that of the
intake mouth.lf the intake height
exceeds 4 metres.use a pipe with a
larger diameter.The diameter of the
delivery pipe must be chosen to suit the
flow rate and pressure required at the
takeoff points.The intake pipe must be
slightly angled up towards
the intake mouth to avoid the
formation of air locks(Fig.B).
Make sure that the intake pipe is
completely airtight and immersed in
the water by at least half a metre to
avoid the formation of
vortexes.Always fit a foot valve
at the end of the intake pipe. It is
advisable to fit a non-return valve
between the delivery mouth and flow
rate adjustment gate valve to avoid
dangerous water
hammering in the event of the pump
suddenly stopping.This measure is
compulsory if the delivery water
column is over 20 metres.
The pipes must always be fitted
using the related brackets (Fig.C)
to avoid transmitting stress to the
pump body.
Take care not to damage any part by
overtightenting the pipes when fitting
them.
ELECTRICAL CONNECTIONS
The installer is responsible for making the
electrical connections to the mains supply
in compliance with the relevant regulations
in force:
1. Remember that for fixed installlations is
required the use of a safety device accord to
the regulations;
2. Make sure that the specifications on
the pump rating plate and the rated line
values are the same(Fig.D);
3. Connect the pump to an effective
earth circuit and then connect up the
phases following the diagram on the
terminal block cover or rating plate;
4. Our single-phase motors are protected
against overloads using a thermal
device(overload cutout)fitted
in the winding.Users are responsible for
fitting a suitable protection device for three-
phase motors;
5. Check that three-phase pumps rotate
clockwise when looking at the pump from
the motor fan side,swapping over two of the
phase connections if they do not (Fig.E).
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