Aqua-Base ESW Serie Manuel De L'utilisateur page 19

3 – DESCRIPTION
3.1 – WATER SYSTEM – FLOW CHART
In the basic version, desalinator ESW is made up of the following elements:
REP. DESCRIPTION
EdM Hull fitting
:
V0 Hull valve
A1/A2/A5 Feeding pipes
/B1/B2
1 Inlet valve
2 Sea Strainer
28 Vaccum switch
3 Low Pressure Pump
4 5 µ filter
5 LP Pressure Gauge
6 Hydraulic amplifier
7 Air bleed valve
8 Check valve
9 HP Pressure Gauge
10 R/O module
11 Cleaning valve
14 Valve 3-way
15 Activated carbon
filter (Extra)
17 Salinity cell
18 Electrovalve
rinsing (Extra)
B3 Reject piping
C1 Vaccum switch fitting
R Hull fitting
A3 / B4 Cleaning pipe
A4 / A6 Rinsing pipe
FUNCTION
Always immersed in seawater, it ensures continuous seawater feeding of the unit. Not included in the
Minimal supplies.Do not take water from the motor's cooling system. Place the hull valve (V0) as far away as possible
from the rejected brine hull fitting (R).
Ø3/4"
Situated near the hull fitting, it ensures the closing of the seawater intake. Not included in the supplies.
Ensures water supply to the unit through the filter (4). The internal diameter must be 20 (Embedded steel spirale
reinforcement A1/A2/A5) and internal diameter 19 (flexible B1/B2).
Manual 3-way valve ensuring water supply to the unit, whether with seawater in normal operation, or with the water or
chemical solution contained in a bucket during cleaning or preservation of the membrane.
Small screen filter ensuring seawater filtering of large particles to protect the booster pump (LP).
Lack of seawater safety of the low-pressure pump inlet (setting at -0.6 bar). If the pump cavitation becomes too important
the unit is stopped to avoid damage to the mechanical and paddles pump.
Driven by an electric motor, it raises seawater pressure to the required value between 5 / 10bar. Must be installed 200mm
below the water line.
Contains a filter cartridge ensuring seawater filtering of particles greater than 5µ (essential before water enters the
membrane).
Indicates the LP pressure.
Increases seawater pressure to produce fresh water through the R/O membrane.
To bleed the system at the first start-up, or after replacement of the filters. Allows operation of the unit at low pressure when
opened for cleaning or preservation operations.
Allows discharging the excess of high pressure when changing the operating parameters (setting at 68 bar).
Indicates the HP pressure.
Made up of pressure-resistant vessels, containing the membrane through which the desalination of seawater is carried out.
By opening this valve, the valve (1) itself being turned to cleaning position, the unit can be operated in closed circuit on an
auxiliary tank (or bucket) containing the cleaning solution.
Electromagnetic 3-way valve controlled by the salinity cell. It automatically directs the produced water towards the tanks if
the salinity is correct, or towards the discharge to the sea, if it isn't.
For de-chlorination of fresh rinsing water to preserve the membrane.
Continuously measures the salinity of the produced water, and controls the valve (14) according to this measurement.
of Ensures automatic rinsing of the desalinator by using fresh water from the boat's water circuit under pressure.
Collects the concentrated brine produced by the membrane for discharge to the sea. Imperative internal diameter must
be 19.
Checking of the pressure at the inlet of booster pump (red hose 4x6).
Situated above the water line, ensures brine discharge to the sea. Not included in the supplies (avoid installing the
reject fitting in front of the seawater entry hull fitting).
Ensures supply of fresh water and chemical solutions stored in a bucket or a holding tank, during membrane cleaning and
storage operations. Ensures the cleaning of the membranes in a closed loop by opening the valve 11. Imperative internal
diameter must be 20 (Embedded steel spirale reinforcement A3) and internal diameter must be 19 (flexible B4).
Ensures supply of fresh water from the fresh water tank, during membranes rinsing operations after automatic turning of the
rinsing electrovalve (18). Internal diameter must be 20 (Embedded steel spirale reinforcement.
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VERSION 2023-06-Y3