Espa ACUARIA37, Instruction Manual, Page: 9 / 44

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2. HANDLING
The pumps are supplied suitably packaged to prevent
damage in transit. Before unpacking, check that the
packaging has not been damaged or deformed.
Lift and handle the product with care and with
the right tools.
3. INSTALLATION
Pumps should not rest on the bottom of the
well, nor be placed very near the walls. To
avoid this, hang the pump from a cable
through the handle on the top.
Never hang the pump from the power cable or
the discharge line. The pump must be
completely submerged to ensure proper
cooling. See fig. 1.
Make sure the well flow is higher than
required, to prevent the pump from running
dry or from starting and stopping more often
than normal.
If the well water level fluctuates significantly,
we recommend installing level electroprobe
equipment.
To avoid ruining the motor power cable and
level electroprobe cables, attach them to the
discharge line with clamps when lowering
them into the well.
3.1. Discharge line assembly
The pumps are supplied ready to be connected a 1"
line. However, if the geometric height is considerable
and the paths are long and winding, we recommend
using lines with a larger diameter, to avoid head loss
due to friction as much as possible and to obtain the
best hydraulic performance possible.
Install a check valve on the outlet of the pump to
prevent the line from emptying every time the pump
stops.
If a plastic hose is chosen instead of a metallic line,
make sure it can withstand the pressure provided by the
pump. Prevent the hose from becoming twisted
because, in addition to preventing the desired flow,
proper pump operation will be hindered.
3.2. Electrical connection
The electrical installation must have a multi-
pole isolator with minimum 3mm contact
openings.
The protection of the system will be based on
a differential switch (
∆
fn = 30 mA).
The connection and its dimensioning must be
performed by a qualified installer according to
the needs of the facility and following the
regulations in force in each country.
To lengthen the electrical cable, use resin
connection splices only. Pay special attention
ensuring that the colors of pump cables match
those of the extension.
It is imperative to connect the ground cable
(yellow-green color).
In the single-phase motors with external
capacitor, connect the capacitor together with
the protective panel to the outside of the well.
Thermal protection must be provided by the
user (in accordance with current installation
rules).
For correct electrical connection, follow the
diagrams in fig. 2 (mono-phase) or 3 (three-
phase).
3.3. Verifications prior to initial start-up
Make sure the mains frequency and voltage
match the indications of the name plate.
Make sure the value of the capacitor is the
same as described on the plate (single-phase
version only).
Check
that the pump is completely
submerged. If the flow is less than expected,
invert two phases of the power supply in the
protective panel (three-phase version only).
NEVER LET RUN THE PUMP DRY.
4. START-UP
If there is a line valve, open it completely.
Connect the power supply switch. Water will never fow
at the end of the line immediately; if the path is long,
wait a few minutes. Check that the absorbed current is
the same as marked on the name plate and adjust the
thermal relay accordingly (three-phase version only).
If the motor does not start or no water flows at the end
of the line, try to find the anomaly using the
troubleshooting guide in point 8.
5. MAINTENANCE
These submersible pumps do not require maintenance.
During frosty periods, remember to drain the
line.
If the pump will be out of service for extended
periods, it should be removed from the well
and stored in a dry, well-ventilated location.
Warning: In the event of faults or damage occurring to
the pump, repairs should only be carried out by an
authorised service agent.
The Official Technical Services list is in www.espa.com.
When the pump is eventually disposed of, please note
that it contains no toxic or polluting material. All main
components are material identified to allow selective
disposal.
EN