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Use and installation instruction manual
3 APPLICATIONS AND USE
3.1 Permitted use
These electric pumps are designed for applications such as water supply from
groundwater, pumping from a reservoir or tank, pressure increase or domestic
and small commercial or industrial utilities.
The electric pumps have an IPX8 protection rating.
The submerged electric pumps are designed to work while immersed in the liquid
and the surface electric pumps to work out of the liquid. The control panel has an
IP55 protection rating.
3.2 Pumped liquids
Clean, non-aggressive liquids, compatible with the electric pump component
materials. A liquid must have physical characteristics similar to those of clean
water at room temperature (1030 kg/m
viscosity. If these limits are exceeded, contact the manufacturer).
Improper use can result in overheating of the machine and power cables,
with consequences such as failure and potentially fire.
Any sand content in the water must not exceed 50 g/m
will reduce the electric pump service life and increase the risk of blockage. Any
suspended solids must not exceed 0.5 mm in maximum size.
The pump can work continuously at the maximum temperature indicated on the
rating plate.
3.3 Conditions of use
• Maximum operating pressure (pump delivery pressure, given by the sum of the
pump inlet pressure and the pressure increase created by the pump): 15 bar.
The maximum pressure at the appliance inlet is determined by the pressure
increase created by the pump, so as not to exceed the maximum operating
pressure (see appropriate section).
• Sucked liquid maximum temperature: +40°C.
• Electrical supply voltage: refer to the rating plate.
• Maximum immersion depth: see the indication of the rating plate (max 20 m).
• Maximum number of consecutive hourly start-ups: 40.
3.4 Non-permitted use
Do not use the electric pump for applications other than those described
above and, in any case, not authorised by the manufacturer. Improper use may
cause serious damage (including death) to people, animals, objects and the
environment.
Do not use the electric pump in swimming pools, basins, ponds and in
similar places when people are in the water.
• Do not pump food liquids or human food products.
• Do not pump drinking water if adequately certified equipment is required for
this.
• Do not pump any liquids that are more viscous and/or denser than water,
unless specifically authorised by the manufacturer.
• Do not use the machine in potentially explosive environments or with
flammable liquids.
• Do not run the machine without any liquid.
• To avoid overheating, do not run the electric pump continuously at a flow rate
of zero or lower than 10% of the rated value. The pump is operated at best
within the range specified on the rating plate.
4 INSTALLATION – GENERAL
The electric pump is suitable for both vertical and horizontal installation. Electric
pumps with in-line ports can be installed in places occasionally subject to flooding
(as long as the electrical terminals of the power cable remain in a dry place).
The wire terminals of the power supply cable (wires or power outlet) must be
protected against water, humidity and atmospheric agents. Pay attention to the
protection rating of the control panel (IP55), if any.
Secure the control panel to the wall using the eyelets on it. It is recommended to
install it in a dry and sheltered place.
Before starting work on the machine, make sure that it has been
disconnected from the power supply network and that it cannot be
accidentally reconnected.
Always use the required PPE (refer to the relevant section).
If necessary in relation to the conditions of use and the working environment, we
suggest installing adequate devices to immediately but safely stop the machine,
in case of emergency.
4.1 Electrical connections
The connections must be exclusively performed by expert, authorised personnel
and in compliance with legal obligations, current regulations, recommended
technical practices and the following provisions.
Models without a plug are only intended for fixed applications (where the cables
maximum density and 2 cPs maximum
3
. Higher sand concentration
3
cannot be disconnected and reconnected by the user). The cable terminals
must be connected in an electrical panel with at least an IP55 protection rating,
equipped with cable mechanical fixing systems independent of electrical
terminals, and an overvoltage category III omni-polar cut off switch preventing
the panel from being opened when the appliance is live.
Models equipped with plugs can be used in mobile applications, using only
electrical sockets provided with an earth contact. The following provisions apply
to both types.
Make sure the rating plate details match the rated voltage and frequency values.
Always connect the earthing cable of the electric pump and check the earthing
circuit for effectiveness before starting the pump up and on a regular basis.
The installer is responsible for making connections in accordance with the
regulations in force in the country of installation.
The appliance must be powered by means of a residual current device,
with residual operating current not greater than 30 mA.
Three-phase appliances must be protected against short-circuits and overloads
by a class 10 protection device, in accordance with IEC 60947-4. Set the rated
current according to the value shown on the rating plate. A manual reset device
is recommended.
4.2 Single-phase versions
The single-phase versions can be supplied complete with a control panel that
includes the capacitor or with the integrated capacitor (two-wire power cable, in
addition to the earth wire).
Otherwise, refer to the instructions below (fig. 3) and to the technical data plate
of the pump for the connection and when choosing the capacitor.
YELLOW/GREEN
BLACK
BLUE or GREY
BROWN
Fig. 3
In the single-phase versions up to 1.1 kW (50 and 60 Hz) and 1.5 kW (50 Hz),
the motor is protected against overloads by means of a thermal device (circuit
breaker) inserted in the winding.
Caution! The device automatically resets when the motor temperature
drops below the danger level. The electric pump may restart unexpectedly!
The single-phase powers 1.5 and 2.2 kW require external protection, if not
equipped with the control panel.
The rotation direction does not require any checks.
4.3 Three-phase versions
To connect the three-phase versions, refer to the indications below (fig. 4).
BLUE or GREY
BROWN
BLACK
YELLOW/GREEN
Fig. 4
Three-phase versions require external protection against overload and short-
circuit.
If the electrical connections have been made respecting the cyclic direction of
the phases, as in fig. 4, the direction of rotation is automatically corrected (it is
advisable to verify in any case, so as to avoid misunderstandings). Otherwise,
check the direction of rotation as described below.
4.3.1 Checking the direction of rotation
In the three-phase versions, the direction of rotation is determined by the
connection of the power supply and can be inverted. In this case, the performance
is significantly lower than the nominal ones. To check the correctness of the
connection, immerse the electric pump in the fluid to be pumped or install it in
line. Start it and proceed in one of the following two ways:
• During operation, measure the maximum power consumption with an
ammeter clamp. If the rotation direction is incorrect, the values will be nearly
double those specified on the rating plate.
• Alternatively, run the machine for a few seconds, then reverse the rotation
direction and repeat the operation. The correct direction is the one in which the
greatest flow rate is obtained.
To reverse the rotation direction, it is sufficient to exchange two phases between
them.
ENGLISH
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