Schenker MODULAR 30 Electron User manual

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OPERATION AND MAINTENANCE MANUAL
1. Introduction
1.1. General
1.2. Technical data
1.3. System 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. By-pass activation
3.2. First start-up procedure
3.3. Normal operating procedure
4. Maintenance
4.1. Shutdown procedure
4.2. Maintenance and recurrent inspections
4.3. Troubleshooting
5. Safety cautions
6. Most frequent operations summary table
7.Warranty
Rev. 2012

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1. Introduction
1.1 General
Thank you for choosing a Schenker Watermaker which we know will give you years of
service, making life onboard more enjoyable.
To ensure the maximum efficiency of your Schenker Watermaker and its trouble free working,
Please read this manual and to keep it onboard for reference.
The Modular 60 watermaker uses Schenker’s patented ENERGY RECOVERY SYSTEM 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 Modular 60 to be run directly
from the vessels batteries.
The ENERGY RECOVERY SYSTEM 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
PUMPS 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 30M12)
24 Vdc +/- 20% (version 30M24)
Power consumption: average of 110 Watt
Production performance: 35 Lit/h +/- 20% @ seawater 25 °C - salinity 35.000 ppm
Seawater temperature range: 13°C - 35 °C @ salinity 35.000 ppm
Quality of water produced: average of 300 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 System 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 –7,5
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 is constituted of a cylindrical recipient and has
the function to dampen 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 left of the device. The air pressure shall be of 2,8 Bar. The
accumulator is charged in factory at the right pressure, but it is opportune to verify the pressure
level at the first start-up.

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 WATERMAKER GROUP.
1. Reverse osmosis membranes
2. Manometer
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 System. 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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Computer. It is installed in a box outside the system. On the box is installed a by-pass key that
exclude the electronics and allow to run the system manually.
Pressure switch (probe). It is a little steel device, mounted on the aluminum structure. It is
connected to the computer throw the cables 5 / + . Its function is check that the cycling of the
machine is correct.
Depressurization valve
e
Reset valve
Positioner

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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.

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2. Installation
2.3 Water intakes
The necessary hydraulic intakes are:
•Seawater 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
-Must 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) .
IMPORTANT
Flushing must always be carried out with the pressure water system ON.
The pressure water system must NOT exceed 2.5 BAR.
•Salt-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.
Reinforced hose
PN15 min int.
dia. 16 mm.

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PUMP CONNECTIONS:
Connect the in/out hose to the pump as follows:
WATERMAKER CONNECTIONS:
IN – (sea water inlet from the pump) Make use, for this connection, of the external holder located
on the left side of the watermaker (marked IN).
OUT (Discharge outboard) Make 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 FRESH 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 12 cm height 8 cm.
It can be embedded installed on any boat covering panel, on condition that the area behind is free
of humidity and condense and there is enough depth to house the rear part of the panel (approx. 8
cm.).
Even the computer connecting cable need to run through boat areas not subject to water deposits
(avoid for example to lay the cable through the bilge).
The cut to be performed on the boat covering panel, to encase the remote control panel, has the
following dimensions:
width 9 cm height 5 cm.
The control panel, once installed, shall be fixed by Parker type screws.
 Computer-to-plant wiring
The electric connectors are positioned inside the small electric box connected to the computer
box. The power supply, coming from the service batteries, needs to be connected to the
terminals – and + . The connection to the boat panel needs to be performed downstream the
voltmeter and the ammeter of the boat panelboard. The connecting terminal must be suitable to
support the plant electric load (approx. 150 Watt). A 15A automatic circuit breaker (for 12VDC
systems) must be installed on the power supply , and 10A (for 24VDC systems).
The pumps need to be connected to – 12 , the washing electrovalve must be connected to clamps
– 10, and the pressure switch to clamps + 5.
The characteristics of the electric material are:
Automatic circuit breakers: automatic breakers, with 16 amp. cutoff current (for 12 Volts
plants), and 10 amp. (for 24 Volts plants).
Electric cable: red/black single-pole cable, flame-retardant type sea wiring. The cable section is
function of the line length and of the feeding type (12 or 24 Volts).
To calculate the line length it is necessary to add the positive and negative cable runs. Use the
following table once determined these parameters. Choose a bigger cable section in case of
doubt.
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 4 11 10 7 16 5
24 10 2,5 13 4 11 4 11
Electric cables and switches selection table.

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The connection general diagram is the following:
Clamp connect to cable section
- negative battery see table
+ positive battery see table
- pump see table
12 pump see table
- electrovalve (on the AC filter) 2,5 mm2
10 electrovalve (on the AC filter) 2,5 mm2
+ pressure switch (on the watermaker) 2,5 mm2
5 pressure switch (on the watermaker) 2,5 mm2
Remote control panel-to-computer wiring
Connect through the apposite outfitted pre-wired cable.

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3. Operation
prearrangment
selectors
illuminated
control
push-buttons
3.1 By-pass activation
The by-pass is activated by turning the key type switch located on the small box connected to
the microcomputer clockwise. When the by-pass is activated, all the electronic functions
(diagnostic, automatic washing, etc.) are disabled, and the unit works in manual mode (the
pumps 1 and 2 are activated acting directly on the PUMP1 and PUMP2 selectors). It is not
possible to perform fresh water washing with by-pass activated.
By-pass activation is signaled by the continuous green light of the start push-button.
The operation with the by-pass is necessary only in the following two circumstances:
Plant first start-up or plant restart after maintenance operations. The use of the bypass is
required at start up when purging air from the system. Without this in operation the computer
would sense that there was deviation from normal operation tolerances and would continually
shut the unit down.
Electronic failure
In the case of electronic control system failure, the by-pass allows use of the plant manually by
selecting pump 1 and pump 2 switches manually. It will however not allow fresh water flushing
of the unit as the Electro valve is controlled by the computer.
Do not engage the by-pass without good reason, as all diagnostic and automatic functions are
disabled when the by-pass is activated.
PUMP 1 AUT. WASHING
START STOP MAN. WASHING
ALLA

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3. Operation
3.2. First start-up procedure
The first start-up procedure is necessary to start a new plant for the first time or to restart it after
having performed the laying up procedure. The purpose of the procedure is essentially purge the
air from the system.
Preliminary checks:
Check that all components are connected correctly.
Check that the reset valve is closed (lever orthogonal to the body valve) and the positioner
unscrewed.
Check that 5 micron filter cartridge is installed in the cartridge holder, and screwed on
tightly.
Check that the seacock and the waste water drain valves are open.
Check that the pump unit is connected correctly and that the service battery voltage is
sufficient.
Check that the vessel's pressure water pump is on.
Check that the vessel's fresh water tanks have enough water in them to perform the first
washing operation.
Start-up procedure:
1. Open the depressurization valve at about half run (45 –50 °).
2. Push for 20- 30 sec the red push-button located on the CA filter in order to purge the air from
the filter.
3. Leave both selectors PUMP1 and AUT WASHING not selected (vertical lever).
4. Push the push button MAN WASH. Now the electrovalve opens, filling with fresh water the
pump head. After 20 seconds the red light STOP will flash. Recognize this alarm pushing the
push button STOP. Repeat this step again.
5. Connect the by-pass, by turning the key type selector (located on the connection box)
clockwise (the START push-button green pilot light turns on).
6. Start the pump acting on the PUMP1 selector. Now the system is purging air from the sea
water circuit and the watermaker. After 3-4 minutes stop the pump rotating anti clockwise
the selector PUMP 1 .
7. Disconnect the by-pass, turning anticlockwise the selector (the START push-button green
pilot light turns off).
8. Turn on the selectors PUMP1 and AUT WASH and close the depressurization valve
(vertical position of the blue lever).
9. Push START. The system starts going under pressure and the fresh water production begins.
Verify that there are no water leaks in the hose connections. In such case, fasten the hose
clamps further. Push STOP after about 3 minutes. Now the system actives the
automatic washing procedure and stops automatically after about 40-50 seconds.

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Warning: the electronic computer is equipped with a minimum voltage block calibrated at about
10,8 volt (12 VDC systems) and at 21,8 volt (24 VDC systems).
This protection is necessary to avoid potential batteries damage (that could prejudice the
functioning of others accessories) if the system works for a long with low charged batteries.
At start (when you push the START button) the watermaker electric absorption has a little peak.
Therefore, if the batteries are low charged, it could happen that the system switches into the
protection position, thus not enabling to start up the unit under electronic control.
This event can be noticed looking at led on computer, inside the electric box. In normal
conditions this led is green. If the block due to the minimum voltage is activated, the led
becomes red for a few seconds. In this case check the batteries state, eventually performing a
recharge cycle.
Otherwise the watermaker could be switched on, in manual mode, inserting the by-pass.
3. Operation
3.3. Normal operation procedure
1. Check that the seacock and waste water drain valve are opened.
2. Check that the depressurization and reset valves are closed and that the by-pass is not
connected.
3. Check that the Pressure Water system is turned on.
Fresh water production cycle without automatic washing.
The automatic washing procedure uses about 5 litres of water. If the unit is in use daily it is not
necessary to carry out this procedure every time water is produced. As long as the watermaker
membrane is cleaned once a week whilst in daily use, no long term damage will be done to the
watermaker.
1.Preset the pumps by turning the PUMP1switch clockwise.
2.Do not turn on the automatic washing switch. Check that the AUT WASHING switch is in
vertical position.
3.Push the START button (the START push-button pilot light come on and water production
will begin).
1. Push the STOP button at the end of the production cycle. Do not turn the pumps off with the
pump switches as the shutdown operation will not be done electronically. There is a chance
that if turned off with the mechanism in a central position, the machine will become blocked
and need resetting manually. After pressing the Stop button the unit will not turn off
immediately, but after few seconds. This is quite normal as the computer repositions the
mechanism in the correct position before deactivating the pumps).
If during production the computer detects an anomaly (cycling missing, low
pressure, etc.) the watermaker will automatically shutdown 20 sec. after having
noted the anomaly and the STOP push-button pilot light will blink. It is
necessary to push the STOP button to restart the unit to confirm to the computer
that the failure has been recognized). Before restarting the watermaker, it is
necessary to check the reason for the failure and remove its causes.

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Fresh water production cycle with automatic washing.
( For use when the watermaker is not used on a daily basis or when automatic washing is
required after every water making session.)
1. Preset the pumps by turning the PUMP1 switch clockwise.
2. Preset the automatic washing by turning the AUT. WASHING switch clockwise.
3. Push the START button to start the plant (the START push-button pilot light come on and
the production will begin).
4. Push the STOP button at the end of the production cycle. The plant will not turn off
immediately, but a washing cycle will be automatically activated lasting approx 50sec.
During the cycle the MAN WASHING push-button pilot yellow light will also light up. The
watermaker will automatically shutdown after the washing cycle has finished.
The fresh water consumption during an automatic washing operation is approx. 5 litres
Manual washing cycle.
(suggested if it is intended to reactivate the plant not before 2-3 months)
This operation is not intended for fresh water production, but serves to perform a deeper rinsing
of the watermaker, prior to long periods of inactivity.
Before starting the manual washing, ensure that there is a sufficient quantity of fresh water inside
the vessel's water tank. Fresh water consumption during this washing cycle is approx. 5
litre/min
1. Turn on the pressure water system.
2. Prearrange the pump turning the PUMP1 selector clockwise.
3. Do not prearrange the automatic washing, assuring that the AUT. WASHING selector is in
vertical position.
4. Push the MAN WASHING button to start the washing cycle (the START and MAN
WASHING push-buttons pilot lights will turn on).
5. Push the STOP button whenever it is desired to stop the washing cycle.
It is suggested to not performing washing operations longer than 10 min. as far as this time range
is sufficient to guarantee a total elimination of the salt contained in the plant.
ATTENTION
If the watermaker has been stopped by using the pump switches and not the Stop button, or if
some air is in the system, 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.
The symptoms of this are when the pumps are turned on, the manometer reaches an elevated
pressure (approx. 8-9 Bar) and the pumps shutdown automatically by the pressure switches
intervention. 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
senses the anomaly, and turns the pumps off by activating STOP push-button. (The light flashes).

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This phenomenon, besides being very rare, does no harm to 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. Screw 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 Shutdown 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 SCHENKER CLEANING 1.
Tools for de-assembling hoses (screwdrivers, pliers, etc.)
Hydraulic connections diagram to perform the shutdown
The shutdown procedure is:
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. Disconnect watermaker unit drain hose and the pumps suction hose.
3. Connect two hose pieces to the drain and to the pump suction.
4. 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.
5. Open the depressurization valve at 45°.
6. Start the watermaker (activating the by-pass and leave the system on for approx. 30-40 min.,
checking that the hoses are properly positioned in the container, so as to avoid drawing air or
spilling the liquid into the boat.
7. Turn the watermaker off, disconnect hose pieces, and connect the pump suction, drain and
water production 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).
Unscrew anticlockwise the filter
holder.
Active carbon filter
replacement
Every 6 months
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 TROUBLESHOOTING
PROBLEM PROBABLE CAUSE SOLUTION
Pump do not start Pump electrically unconnected
Electronic failure
Restore the electrical
connections
Activate the by-pass
Pump start but stop at high
pressure System is blocked
Dirty filter
Dirty membranes
Trouble in the cycling system
Perform Reset
Replace cartridge
Perform cleaning cycle
Contact a Schenker service
point
While functioning the
pump momentarily shuts
down
Pump pressure switch is not
calibrated
Dirty filter or membranes
Calibrate pressure switch
Clean or replace
High pressure heads during
commutation (> 0,2 Bar) Accumulator pressure low
Inflate at a pressure of 2,8 Bar
Low production / normal or
low pressure Exhausted batteries
Air in the plant
Seal system leak
Check battery charge
Perform bleeding
Contact a Schenker service
point
Low production / high
pressure (> 7,5 Bar) Cold sea water
Dirty membranes
Normal operation
Perform cleaning cycle
Leaking in the plant Loose connectors
ERS loss Tighten connectors Contact a service point