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I N S T R U C T I O N M A N U A L
Safety precautions
This symbol
words "Danger" or "Warning" indicates the risk level deriving from
failure to observe the prescribed safety precautions:
DANGER
Warns that failure to observe the pre-
risk of
cautions involves a risk of electric
electric shock
shock.
DANGER
Warns that failure to observe the pre-
cautions involves a risk of damage to
persons and/or things.
WARNING
Warns that failure to observe the pre-
cautions involves the risk of damaging
the pum and/or the plant.
1. SPECIFICATIONS
The following instructions will help you to install your pumps
correctly and obtain the maximum efficiency of your electro-
pump.
They are centrifugal multi-stage pumps and have been
designed to work with clean water at a maximum temperature
of 35°C.
The materials used in the construction of our products are of
an excelent quality and are submitted to strict control and
verified with extreme care.
Read all installation and operation instructions thoroughly and
look carefully at the electrical connections chart. Failure to do
this could result in motor over-loading or other damage upon
which we would decline all responsability.
2. INSTALLATION
The pump should be fixed to a solid base by bolts through
the holes in the pump bracket in order to prevent
unwanted noise or vibration.
You should place pump as near as possible to water level
so to have the minimum suction lift and reduce loss of
head.
Make sure that pump is never submerged and that it rests
in a dry and well aired room.
3. PIPES ASSEMBLY
Suction pipe must have a slightly larger diameter than the
pump inlet and must always remain in an upward inclination of
2% so to help with correct priming.
A foot valve with filtre should be installed and submerged to at
least 30 cm below the well dynamic level to provent air from
entering the pump.
Be sure that discharge pipe has a diametre equal or larger than
the discharge port.
Suction pipe or discharge pipe should never rest on top of the
pump.
together with one of the following
When using larger diametre pipes, excentric cones should be
fitted to suction pipe and concentric cones to the discharge
pipe.
4. ELECTRICAL CONNECTION
The electrical installation must have a system of multiple
separations with contact openings of at least 3 mm.
The protection of the system will be based on a
differential switch (l fn = 30 ma). The electric cable must
correspond to the EEC (2) norm or to the type H07
RN-F according to VDE 0250.
The single-phase motors have a built-in thermal pro-
tection.
With three-phase motors, end-user must install himself
the correct protection to the pump as per the
aproppriate installation regulations.
Follow directions on Fig. 1 for a correct electrical
connection.
5. CONTROLS PRIOR TO THE INITIAL STARTING
Check that voltage and frequency correspond to those
indicated on the technical characteristics label.
Make sure the motor shaft is turning freely.
Fill pump body completely with water, as well as the
suction pipe, through the priming hole. Check that there is
no leaking through joints or connections.
Check to assure that the sense of rotation of the motor
coincides with that indicated on the fan cover. If you are
checking a threephase motor and the sense of rotation is
wrong, invert two phases on the protection board.
THIS PUMP SHOULD NEVER BE DRY OPERATED.
6. STARTING
Open all gate valves installed in the suction and discharge
circuits.
Check absorbed current and adjust thermal relai conveniently
only when operating with three-phase pumps.
If motor failed to start or did not pump water up, refer to our
"Trouble Shooting" list and identify your problem. Then follow
instruction on what action to take.
7. MAINTENANCE
Our pumps do not need any special or programmed main-
tenance.
Pump body should, however, be drained during periods of
low temperatures or long periods of inactivity. To empty
pump, only remove priming plug. If the inactivity persisted,
pump should be cleaned and stored in a dry and aired
room.
3
GB
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