Schenker MODULAR 30 digital User manual

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OPERATION AND MAINTENANCE MANUAL
1. Introduction
1.1. General
1.2. Technical data
1.3. ystem description
2. Installation
2.1. General criteria and material required
2.2. Components mounting
2.3. Water intake
2.4. Hydraulic connections
2.5. Electric connections
3. Operating procedures
3.1. Remote panel commands
3.2. First start-up procedure
3.3. Normal operations
4. Maintenance
4.1. hutdown procedure
4.2. Maintenance and recurrent inspections
4.3. Troubleshooting
5. afety cautions
6. Warranty
Rev. 2011

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1. Introduction
1.1 General
Thank you for choosing a chenker Watermaker which we know will give you years of
service, making life onboard more enjoyable.
To ensure the maximum efficiency of your chenker Watermaker and its trouble free working,
Please read this manual and to keep it onboard for reference.
The odular 60 watermaker uses Schenker’s patented ENERGY RECOVERY SYSTE which
amplifies the pressure of common low pressure pumps, and recoups all the hydraulic energy back
from the membrane. This saves on the use of power, allowing the odular 60 to be run directly
from the vessels batteries.
The ENERGY RECOVERY SYSTE operating components are reduced to a minimum, thanks
to two internationally patented solutions that eliminate the need for pilot valves.
The lack of high-pressure pumps ensure that the system is silent and vibration free. It also means
that no adjustments are required when the system is started up.

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1. Introduction
1.2 Technical data
WATERMAKER GROUP
Dimensions
Length: 68 cm
Width: 20 cm
Height: 30 cm
Net weight: 24 Kgs.
Connections:
Seawater intake holder for hose int. diam. 16 mm.
Salt water outlet holder for hose int. diam. 16 mm.
Fresh water outlet compression fitting for hose int. diam. 6 mm. int. X 8 mm. external
PUMP GROUP
Dimensions
Length: 34 cm
Width: 19 cm
Height: 35 cm
Net weight: 7 Kg.
Connections:
Seawater intake holder for hose int. diam. 16 mm.
Salt water outlet holder for hose int. diam. 16 mm.
Filter: 5 micron polyestere pleated type
Power supply: 12 Vdc +/- 20% (version 30 12)
24 Vdc +/- 20% (version 30 24)
Power consumption: average of 110 Watt
Production performance: 35 Lit/h +/- 20% @ seawater 25 °C - salinity 35.000 ppm
eawater temperature range: 13°C - 35 °C @ salinity 35.000 ppm
Quality of water produced: average of 400 ppm TDS
CEE conformity: In compliance with directives 89/392 CEE sect.1 (general safety
machines requirements) , 89/336 CEE (electromagnetic
compatibility).

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1. Introduction
1.3 ystem description
The Modular system comprises of two separate units:
 PUMP AND FILTER GROUP.
This unit picks-up the sea water up and sends it to the watermaker at pressure (about 6,5 –7
Bar). The pumps are fitted with a safety cut off switch, calibrated at about 9 Bar. The pressure
switch can be adjusted by an 2 mm. allen key. To make the allen
key adjustment to the pressure switch pictured, the cover to the
connector must be removed. This gives access to make an
adjustment by inserting the allen key without removing the
connector itself. Turning the allen key clockwise increases the
preset pressure, and turning anti clockwise decreases the preset
pressure. The movement required is very small.
(1/4 turn = 1 BAR).
This action will not be required in normal circumstances as the
unit has been pre calibrated at the factory. Before changing the settings please call a Schenker
Service Point. The grey box contains the power relays that activate the pumps electric motors.
The filter housing contains a 5 micron filter cartridge, and its job is to filter impurities that may
damage the watermaker unit. A red push-button is positioned on the top of the housing to purge
air from the pumps unit during start-up operations.
Close to the pump is installed an accumulator. It dampens the pumps pressure oscillations during
the watermaker functioning. The accumulator needs to be pre-charged of air through the apposite
valve (similar to the common tire valves) located on the device. The pre-charged air pressure is
about 2,8 Bar.

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 WATERMAKER GROUP.
1. Reverse osmosis membranes
2. anometer
3. Flow meter
4. Depressurization valve
The watermaker group is constituted of the following components:
The Reverse osmosis membranes, inside the silver high-pressure vessel are used to separate the
intake high-pressure seawater into two flows: one for the salt-water waste and one for fresh water
production.
Energy Recovery ystem. Amplifies the pressure supplied by the pump and recovers the
hydraulic energy back from the membranes. The ERS device makes periodic cycling by a
hydraulically controlled automatic valve. The cycles are noticeable through a” beat” issued
periodically by the watermaker unit. The unit contains two cylinders, and a central body housing
the hydraulic valves.
Manometer is located on the front panel, and it measures the running pressure of the pumps.
Flowmeter is located on the front panel, and measures the flow of produced fresh water coming
out of the unit. This is only indicative as the accuracy of the flowmeter is +/- 20%.
Depressurization valve. Is used only during the air bleeding phase, at the first plant start-up.
This is a blue lever located to the right side of the watermaker. Its function is to depressurize
the system and allow air bleeding. The valve remains closed during normal working
conditions and is opened only during the air bleeding operations. The lever need only be
opened halfway (45°) during air bleeding operations.
Positioner: A stainless steel threaded arm, with a black knob, located on the right side of the
unit. Its function is to reset the unit in start up failure when the unit has been stopped in the
exact centre of a cycle. This will only happen with units fitted with a manual flushing system or
when the bypass is activated when fitted with an Analogue control
Reset valve. The valve must be closed during normal functioning (lever perpendicular to the
valve). Such valve has the function to allow the reset in case of a system block. It must be
opened before acting on the valve positioner.

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Probe (pressure switch). It is a little steel device, mounted on the aluminum structure. It is
connected to the computer throw the cables PS / PS . Its function is to check the cycling of the
machine .
Computer box . It is an external unit. It has to be installed relatively close to the watermaker, in
a position protected from water. It is connected to the remote panel and controls the functions of
the watermaker automatically.
The microswitches P1and EV allow the direct command of the pump the electrovalve
respectively. They can be used, as an emergency solution, for starting the watermaker in case of
total failure of the electronic computer. In normal condition they have to be switched off.
Depressurization valve
e
Reset valve
Positioner
Remote panel cable
connector
Emergency
microswitch
Electric
connections

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2. Installation
2.1 General criteria
It is important to plan carefully the activity prior to start the installation works, evaluating any
possible alternative solution. The fundamental choices to make are:
 Finding of seawater intakes and any necessary fittings.
 Positioning of main units .
 Positioning of pumps operation automatic circuit breakers.
 Pipes and electric cables laying.
A well-done installation is the maximum optimization between functionality, accessibility,
installation saving and esthetic. All plant components have been designed to achieve this target.
It is suggested to draw a schematic electric and hydraulic connections layout once an installation
solution is chosen, and enclose it into the manual for further quick reference.
2. Installation
2.2 Components mounting
 Pumps group.
The pumps are self-priming type. Anyway it suggested to install the pumps group below the
watermaker, as low as possible respect the sea level, and as close as possible respect the sea
water intake.
The pumps need to be installed in an adequately ventilated area to allow cooling and avoiding
condensation. Do not install the pumps unit close to inflammable liquids, as the pump surfaces
can become warm. Avoid locating the pump where a loss of water can cause damage or
jeopardize its safety. Allow sufficient space for access to the casing containing the filter
cartridge.
The pump must be installed horizontally on a suitable base strong enough to support its weight
when the filter housing is full of water.
It may be necessary to create a suitable wooden or fiberglass structure for the unit if an existing
one not available. The base of the pump is equipped with vibration-damping devices, but avoid
installing it on a surface susceptible to vibration.
The pumps unit can be a little noisy in operation. Possible areas for siting are: sink closets, under
berth lockers, wardrobe bases (creating a false floor above it.)
It is not recommended to fit the pumps unit in the engine compartment.
The unit can be fixed on the supporting structure using the screws supplied with the equipment
or the bolts with nuts and washers.
 Watermaker group.
The watermaker unit is hydraulic. It can be installed in areas inside exposed to humidity. It can
be installed at any height inside the vessel. Avoid installing the system where a leak will cause
damage to the boat or jeopardize its safety.
The hydraulic intake and outlet connections are positioned in the standard version, on the left
hand side of the unit. It is necessary to leave a minimum distance of 20 cm. to allow for pipe
laying. Possible locations of the watermaker group are: engine compartment, under berth lockers,
cockpit lockers. Install the unit where access to valves and instrumentation is visible. The unit is
fitted with rubber mountings to prevent vibration, avoid fitting the watermaker in an area where
there is a lot of vibration. The unit can be fixed on the supporting structure using the screws
supplied with the equipment or the bolts with nuts and washers.
 Non return valve.
The non return valve must be installed vertically and as close as possible to the water inlet.

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2. Installation
2.3 Water intakes
The necessary hydraulic intakes are:
• eawater intake
It is ideal a specific sea water intake, size ¾” min. in a central position, well under the water
surface even when the vessel is well heeled over.
The skin fitting is recommended. It must be oriented to the bow of the boat.
As alternative it is possible Tee into an water inlet as long as the following conditions are met:
- 3/4” minimum size,
- No air can be introduced into the system from other use ie: salt water tap in galley
- ust always be under the water surface even when the vessel is well heeled over.
Allow a minimum ½” on-off ball valve on the water intake. The hose connections, especially if
under the seawater level, must be secured with double hose clamps.
It is not advisable to Tee into the engine cooling water intake as it may impair the cooling of the
engine. An easily inspected mesh type filter will be required close to the water intake. The filter
has to be of 50 microns. It is possible to use filters from existing outlets.
• Fresh water intake for washing.
Tee in downstream of the vessel's fresh water pressure system (Domestic water from tank) .
I PORTANT
Flushing must always be carried out with the pressure water system ON.
The pressure water system must NOT exceed 2.5 BAR.
• alt-water waste. (After passing through the watermaker)
The salt-water reject fitting must be ½” minimum and preferably above the seawater level.
Again, if required you can tee into an existing skinfitting ie: sink water out, one way valves may
need to be considered. The watermaker waste pipe must be unobstructed when the machine is in
use.

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2. Installation
2.4 Hydraulic connections
Pressurized fresh water valve Pump
Elecrovalve Non return valve
5 micron filter Net filter
Swan neck upward - Disharge Water inlet
Watermaker Active carbon filter
Fresh water outlet
All the hydraulic connections (to exception of the fresh water production) have to be realized
with a 16 mm. int. diam. hose and a ½” holder. The hydraulic section that is continuously
under consistent pressure is the pump outlet – 5 m. filter – watermaker inlet connections . For
this section is necessary to use a good quality PN 15 min. reinforced hose. An inadequate hose
could burst, jeopardizing seriously the safety of the boat. The hydraulic connections are:
Low pressure
max 3 bar
-connections sea water inlet- net filter -
backflow valve inlet.
-connection watermaker’s exhaust
discharge - drain outlet.
PN 5 stainless steel spring type
hose 16 mm int. diam
Medium
pressure –
max 13 bar
-connections fresh water pressurized
system–carbon filter-backflow valve
outlet–pump inlet
-connections pump outlet-5 microns
filter– watermaker inlet.
PN 15 reinforced hose 16 mm
int. diam.)
Low pressure -
max 3 bar
- Connection to the fresh water tank Small 6X 8 blue pipe (furnished)
Plumb to
pressure
side of
boat fresh
water
Exhausted
discharge
“Armovin”
type hose
int. dia.
16 mm.
einforced hose
PN15 min int.
dia. 16 mm.

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PUMP CONNECTIONS:
Connect the in/out hose to the pump as follows:
WATERMA ER CONNECTIONS:
IN – (sea water inlet from the pump) ake use, for this connection, of the external holder located
on the left side of the watermaker (marked IN).
OUT (Discharge outboard) ake use, for this connection, of the holder located on top of
the pressure amplifier, inside the watermaker unit (marked OUT). Create a Swan neck upward,
when the drain outlet on the vessel is positioned below the watermaker unit, in order to guarantee a
water head.
PRODUCTION FRE H WATER CONNECTION
The connection has to be made using the small
hose supplied with the equipment. The
connection has to be made between the
polyethylene pipe that comes out the
watermaker unit (on the right), and the upper
side of the tank, on a ¼” outlet if available.
It is possible, in case of metal tanks, to make a
¼” threaded hole to connect the supplied male
connector.
Another option is to Tee into the tank air vent
hose.There are no particular limits on the
connection length.
Another option is to Tee into the tank air vent hose. This is only possible if the breather pipe section
is more than 16 mm. dia. There are no particular limits on the connection length.

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2.Installation
2.5 Electric connections
 Remote control panel mounting
The remote control panel has the following dimensions:
width 135 mm. height 116 mm.
It can be flush mounted on any surface, providing the area behind is free of moisture and
condensation and there is enough depth to house the rear part of the panel (approx. 8 cm.).
To cut on the mounting surface will have the following dimensions:
width 115 mm. height 97 mm.
 Wiring
Power upply
The Power supply, coming from the service batteries, needs to be connected to the terminals +
and – of the Pump Box. An automatic circuit breaker (16A for 12VDC systems and 10 A for
24VDC systems) must be installed on the power supply. The section of the cables must be
adequate. See the table below:
Voltage Automatic Cable lenght
switch up to 3 mts 3 - 7 mt. 7-10 mt.
Volt Ampere mm2 AVG mm2 AVG mm2 AVG
12 16 11 10 7 16 5
2 10 2,5 13 11 11
Electric cables and switches selection table.
Connections between the pump box and the computer box
3 cables (section 2,5 mm2) will connect the pump box with the computer box.
The cables + / - will provide the power to the computer box.
The cable P1 will provide the command to start the pump.
Connections between the computer box and pressure switch and electrovalve
The pressure switch, positioned on the watermaker, has to be connected to the clamps PS/PS in
the computer box (section 2,5 mm2)
The electrovalve, positioned on the active carbon filter has to be connected to the clamps EV/EV
in the computer box (section 2,5 mm2)
Connection between the computer box and remote panel.
Connect the remote panel to the computer box using pre wired cable supplied (standard length 10
mts.)

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Wiring connection diagram
Signal pressure
switc
h
Electrovalve

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3. Operation
3.1. Remote panel commands
KEY OARD FEATURES
The panel keyboard has a total of four push button. The display light switches off after 15
minutes of not use. Pushing any button, the display will light again, without activate any other
command. The functions of the push buttons are:
TART Used to start the system.
If it is pushed shortly the system starts and the unit will run indefinitely until will be pushed
STOP.
If it is pushed for at least 3 seconds the system starts, and will stop automatically after the
working hours selected with the timer (see menu functions).
It can anyway be stopped before, pushing STOP.
It is used as well to scroll the different options in the single menu.
TOP Used to stop the system.
The system, once pushed STOP, usually doesn’t stop suddenly. It awaits for the correct
positioning of the internal valve (2-3 seconds), and then stops automatically.
If the automatic washing is activated (washing light on), the system, once pushed STOP, will
perform the automatic washing (1 min) before stops.
The push button STOP is used as well to exit from the menu function.
WA HING Used to rinse the system automatically with fresh water.
If it is pushed shortly the system will get ready to perform an automatic washing (1 minute long)
once the system will be stopped.
If it is pushed for at least 3 seconds the system will just perform a 10 minutes rinsing, without
suck up sea water.
MENU Used to enter into the ENU mode and modify some parameters.
Pushing it repeatedly the different ENU options can be scrolled.
On his turn the START push button allows to scroll the different options of the single menu.
The system recognizes the current value without any further command.
The STOP push button allows to exit from the ENU function.

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enu options:
• WORKING TIME (timer)
It allows to select the working time of the watermaker (1-6 hours).
The timer is activated if the START button is pushed for more than 3 seconds only.
• Y-PASS
It allows to exclude the sensor (signal pressure switch) that detects the correct cycling of
the ERS. The operation with the by-pass is necessary only in case of malfunctioning of
the signal pressure switch (in example if the system gets blocks, with the message “
SYSTEM LOCKED”, not as consequence of a real hydraulic problem, but just as
consequence of the malfunctioning of the probe).
The bypass is used also during special operation like the shut down procedure (washing
with chemicals). The bypass activation is automatically removed after one single
production cycle.
Don’t activate the by-pass if not necessary.
• AUTOMATIC START-UP. This function activates automatically the first start up
procedure. The procedure is necessary when a new machine is started for the first time, or
after the filter cartridge replacement, or a general service. The procedure allows to purge
completely the air from the system, and from the seawater and the washing fresh
water hoses. The depressurization valve must be opened before start the
procedure.
• PERIODIC WASHING This function allows a periodic automatic rinsing (every 6-10
days) with fresh water. It can be used before long inactivity periods. The single washing
operation will last about 1 minute. The consumed fresh water, for every washing, is
about 18 liters.
Therefore it is suggested to evaluate if the fresh water reservoir is enough for the
programmed cycles. Selecting NO, the function will be disabled.
To activated the function select the days (6-10), exit from the menu, pushing STOP, and
then push WASHING for 3 seconds.
The display will indicate the remaining day before the first rinsing. The function is
anyway disabled pushing STOP, or after a normal production cycle.
ME AGE
SYSTE STANDBY
It indicates that the system is ready to be set and started.
TOTAL HOURS
It indicates that the total, progressive working time of the watermakers.
SYSTE WASHING
It indicates that the unit is in washing mode (pumps and electrovalve on).
SYSTE BLOCKED

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The message must be acknowledged pushing STOP.
This messages means that an hydraulic block of the machine occurred, and then the pumps has
been switched off as safety procedure. In this case is suggested to perform a reset procedure and
investigate on the possible hydraulic origins of the problem.
If the origin of the problem is just a malfunctioning of the signal pressure switch, it is possible to
start again the unit, activating the bypass.
BYPASS WARNING
This message advice or remember that the unit is working in bypass mode (then some safety
functions are disabled).
CHANGE PU P FILTERS
This is a blinking messages that must be acknowledged pressing the key STOP
This messages suggest to replace the filter of the pump group.
3. Operation
3.2. First start-up procedure
The first start-up procedure is necessary to start the first time a new system, just installed.
The purpose of the procedure is basically purge out the air from the system.
It can be used as well after a filter replacement, or after other maintenance operations.
Preliminary checks:
 Verify that all components are connected correctly.
 Verify that the filters cartridges are installed.
 Verify that the seawater valve, and the possible drain valve, are opened.
 Verify that the reset valve is closed (lever orthogonal to the body valve) and the positioner
completely unscrewed.
 Verify that the small gray valve on the active carbon filter is opened and the fresh water
pump of the boat is on.
 Verify that the fresh water tanks are full enough (at least 50 liters) to perform the first
washing operations.
Start-up procedure:
1. Open halfway the depressurization valve (45°).
2. Activate the start up procedure throw the function of the ENU (select the specific function
in the menu mode, exit from menu mode pushing STOP, and start the procedure pushing
START).
3. Close the depressurization valve when the display shows the specific message.
The procedure lasts about 3 minutes. It can anyway stopped anytime pushing STOP.
After the procedure the system is ready to start normally.

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3. Operation
3.3. Normal operation procedure
• It is always strictly recommended to select the automatic washing, pushing
WA HING.
Production without timer.
-Push shortly the button START.
The control will open the depressurization valve, helping the inlet pump hose to get filled with
water. Then the pump(S) will start after 5 seconds.
The display will show the increasing production time.
-Push STOP to stop the unit.
If the washing has been selected, the system will start the washing procedure, and then will stop
automatically after 1 minute.
Production with timer.
-Select the timing (1-6 hours) throw the specific timer menu (the system will hold as well the
previous setting.)
-Push the button START for more than 3 seconds.
The display will show the decreasing production time.
The system will stop after the selected hours, performing before, if selected, the automatic
washing.
Anyway the system can be stopped at any time pushing STOP.
ingle washing operation (10 min. last)
-Push washing for more than 3 seconds.
The display will indicate the remaining time. It is possible anyway to stop the operation at
anytime pushing STOP.
Periodic washing
-Select the days (6-10) in the washing menu
- Exit from the menu pushing STOP
- Push WASHING for 3 seconds.
The display will indicate the remaining day before the first rinsing.
The function is anyway disabled pushing STOP, or after a normal production cycle.

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ATTENTION
If the watermaker get air, (or if some other problem occurs) the automatic hydraulic valve may
stop in a central position. This means that pressure on both sides of the valve are the same and
the unit is effectively stalled and has to be manually restarted.
In this case the working pressure goes up suddenly (up to 9 Bar) and the pumps are switched off
from the pumps pressure switch. The pumps then have the tendency to try to restart when the
pressure decreases, and then to jam again, resulting in a typical start-stop noise. After approx. 20
sec. the computer recognize the problem , and turn off the pumps, and the message “WARNING
SYSTE BLOCKED” is displayed.
This event, besides being very unusual, does not damage the system, but it is necessary to reset
the valve with the following simple procedure:
RESET PROCEDURE
1. Turn the system off.
2. Open the reset valve (lever in horizontal position).
3. crew the positioner knob clockwise until it can be moved no further.
10 turns at least are necessary.
4. Unscrew the positioner knob up to the original position, until when it is blocked
back.
5. Close the reset valve (lever in vertical position).
6. Restart the system

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4. Maintenance
4.1 hutdown procedure
It is necessary to perform the shutdown procedure before effecting standstills longer than 3
months, for instance before laying up for winter.
The purpose of the shutdown is to clean the unit of possible deposits of limestone, and to inhibit
the growth of microorganisms that may reduce the reverse osmosis membrane's efficiency.
The following equipment is necessary in order to perform the shutdown operation:
 1 ea. recipient 20 liters minimum capacity (a bucket of such capacity could also be suitable).
 Two 16 mm. linen hoses of a length that allow them to be fed into the same container
 A prepared shutdown solution CHENKER CLEANING 1.
 Tools for de-assembling hoses (screwdrivers, pliers, etc.)
Hydraulic connections diagram to perform the shutdown.
Shutdown procedure :
1. Collect approx. 15 liters of unchlorinated fresh water into the bucket. The water produced by
the watermaker itself could be fine.
2. Empty the entire content of the SCHENKER CLEANING 1 solution into the picked water,
and mix carefully following the indications on the pack. Wear a protection mask in order to
avoid inhaling product dusts. The water temperature doesn't have to be lower than 25°C
preferably.
3. Close the grey valve on the active carbon filter.
4. Disconnect watermaker unit drain hose and the pumps suction hose.
5. Connect two hose pieces to the drain and to the pump suction.
6. Insert the end side of the hoses into the bucket, verifying that the hoses have been properly
dipped in the solution and that they don't inhale air.
7. Open the depressurization valve at 45°.
8. Activate the by-pass
9. Start the watermaker and leave it on for approx. 20 min., checking that the hoses are
properly positioned in the container, to avoid drawing air or spilling the liquid into the boat.
10. Stop the watermaker , disconnect hose pieces, and connect the pump suction and drain
original hoses.
Chemical Cleaning Kits:
Schenker No 1 is an acid based organic cleaner. This is used for 'pickling' the watermaker when
not in use and as part of the general cleaning process. See 4.1 Shutdown procedure. Schenker
No 2 is an alkaline base organic cleaner. If the watermaker has been left standing without
pickling or has a 'bag egg” smell, cleaning with Schenker No2 will remove this.

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4. Maintenance
4.2 Verifications and periodic maintenance
The following periodic procedures are to be followed to maintain trouble free operation:
OPERATION
EVERY PROCEDURE
Strainer check and
cleaning
Every 5 days
Check and clean
5 micron cartridge
replacement
Every 15-20 days in
average conditions (4
hours/day usage).
Anyway replace it when
the message
CHANGE PU P FILTERS
appears.
Unscrew anticlockwise the filter
holder.
Active carbon filter
replacement
Every 6 months
Close the grey valve
before open the filter
Purge periodically
the air from the
system, opening at
45° for a couple of
minutes the
depressurization
valve
Every 15 days
Check the pressure on the manometer located on
the front panel.
The working pressure depends on many factors
such as water temperature, salinity level of
seawater, battery voltage, cleanliness of
membranes and type of installation.
The pressure, under mid range working
conditions is approx. 6,5-7 BAR. There is a
small pressure loss , in the range of 0,2 Bars,
during the cycle.

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4. MAINTENANCE
4.3 TROUBLE HOOTING
PROBLEM PROBABLE CAU E OLUTION
Pump do not start
Pressure switch burned or
disconnected
Total electronic failure
Restore
Activate the pump with
the miscoswitch
Pump start but stop at high
pressure
System is blocked
Dirty pump filter
Dirty membranes
Trouble in the cycling system
Perform Reset
Replace cartridge
Perform cleaning cycle
Contact a Schenker service
point
While functioning the
pump starts-stops
Pump pressure switch not
calibrated
Dirty filter or membranes
Increase the pump pressure
switch calibration
(see pag. 4)
Clean or replace
High pressure heads during
commutation (> 0,2 Bar)
Accumulator pressure low Inflate at a pressure of 2,8
Bar
Low production / high
pressure (> 7,5 Bar)
Cold sea water
Filter clogged
Dirty membranes
Normal operation
Clean filter
Perform cleaning cycle
Leaking in the plant Loose connectors
ERS loss
Tighten connectors
Contact a service point
Probe (system pressure switch ) troubleshooting:
If the system goes frequently in blocked position (generating the message SYSTE BLOCKED)
without hydraulic problems, this could possible that the origin of fault is a malfunctioning of the
probe (pressure switch)
The pressure switch can be tested with following procedure:
1. De-connect the pressure switch cables.
2. Activate the by-pass and start the system.
3. Check with a meter in ohm position, between the cables PS/PS, the functioning of the
pressure switch. If working, the pressure switch closes and open the circuit alternatively each
3-4 seconds.
4. If the pressure switch is always close or open during the functioning of the watermaker, it is
out of service and must be replaced.