Schenker 50Z12/24B Service manual

COD: 50Z12/24.B.2018
Installation, use and maintenance manual
Model.: ZEN 50
Matriculation number: 50Z12/24B
Year of construction: 2018
Schenker Italia
Via Delle Repubbliche Marinare, 67
80147 Naples Italy
Tel. [phone]
Fax. [phone]
E-mail: i[email protected]
www.schenkerwatermakers.com
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ZEN 50
12/24 V dc

COD: 50Z12/24.B.2018
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INDEX
1. LAYOUT OF MANUAL........................................................................................................................................4
1.1 STRUCTURE OF THE MANUAL ............................................................................................................................4
1.2 DESCRIPTION OF THE PICTOGRAMS.................................................................................................................4
2. GENERAL WARNINGS AND INFORMATION TO THE RECIPIENT .....................................................5
2.1 IMPORTANT INFORMATION ................................................................................................................................5
2.2 SAFETY WARNINGS ............................................................................................................................................5
2.3WARRANTY..........................................................................................................................................................6
2.4IDENTIFICATION OF THE UNIT ..........................................................................................................................7
2.5LEGISLATIVE REFERENCE ..................................................................................................................................7
2.5.1 DIRECTIVES AND STANDARDS CONCERNING MACHINE SAFETY.................................................................7
2.5.2 RESPECT FOR THE ENVIRONMENT –REQUIREMENTS FOR REMOVAL AND DISPOSAL...............................7
3. PRODUCT PRESENTATION ............................................................................................................................9
3.1 TRANSPORT AND MATERIAL HANDLING ...........................................................................................................9
3.2 STOCK ...............................................................................................................................................................10
3.3 PACKAGING.......................................................................................................................................................10
3.3.1 PACKAGING CONTENTS.................................................................................................................................10
3.4 ATTACHED DOCUMENTS ..................................................................................................................................11
3.5 TECHNICAL DATA .............................................................................................................................................11
3.6 FEATURES OF THE PRODUCT ...........................................................................................................................12
3.7 ADVANTAGES OF THE ENERGY RECOVERY SYSTEM ......................................................................................13
3.8 COMPOSITION OF THE MACHINE ....................................................................................................................14
3.8.1 PUMP GROUP ..................................................................................................................................................14
3.8.2 WATERMAKER GROUP....................................................................................................................................15
3.8.3 ACCESSORIES ................................................................................................................................................17
4. MOUNTING AND INSTALLATION...............................................................................................................18
4.1 GENERAL CRITERIA ..........................................................................................................................................18
4.2 COMPONENTS MOUNTINGS .............................................................................................................................19
4.2.1 PUMP GROUP..................................................................................................................................................19
4.2.2 WATERMAKER GROUP ...................................................................................................................................19
4.2.3 ACCESSORIES................................................................................................................................................22
4.3 INSTALLATION ..................................................................................................................................................22
4.3.1 WATER INTAKE AND DISCHARGE.................................................................................................................22
4.3.2 SEAWATER INTAKE........................................................................................................................................22
4.3.3 FRESH WATER CONNECTION FOR FLUSHING ..............................................................................................23
4.3.4 BRINE DISCHARGE ........................................................................................................................................23
4.4 HYDRAULIC CONNECTIONS .............................................................................................................................24
4.5 ELECTRIC CONNECTIONS.................................................................................................................................27
4.5.1 REMOTE CONTROL PANEL MOUNTING .........................................................................................................27
4.5.2 ELECTRIC CONNECTIONS:WIRES (ZEN 50 12/24V DC) .....................................................................28
5. FUNCTIONING AND USE..............................................................................................................................30
5.1 COMMAND DESCRIPTION.................................................................................................................................30
5.2FIRST START UP PROCEDURE ..........................................................................................................................30
5.2.1 PRELIMINARY CHECKS BEFORE PROCEEDING WITH THE START-UP PROCEDURE ...................................30
5.2.2 START-UP.......................................................................................................................................................31
5.3NORMAL OPERATING PROCEDURE ..................................................................................................................32
5.3.1 NORMAL OPERATING PROCEDURE WITHOUT FINAL FLUSHING .................................................................32

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5.3.2 NORMAL OPERATING PROCEDURE WITH FINAL FLUSHING (RECOMMENDED PROCEDURE)...................32
5.3.3 WORKING CYCLE WITH TIMER .....................................................................................................................33
5.3.4 WORKING CYCLE WITH ONE PUMP ..............................................................................................................33
5.4RESET PROCEDURE ..........................................................................................................................................34
6. MAINTENANCE (ROUTINE AND SPECIAL).............................................................................................37
6.1 CHECK FILTER CLEANLINESS ..........................................................................................................................37
6.2 CHECK THE PLANT WORKING PRESSURE .......................................................................................................38
6.3 CHECK FOR LEAKS............................................................................................................................................38
6.4 CHECK FOR MEMBRANES REPLACEMENT ........................................................................................................38
6.5 SHUTDOWN PROCEDURE .................................................................................................................................38
6.5.1 NECESSARY EQUIPMENT ..............................................................................................................................39
6.5.2 SHUTDOWN OPERATING PROCEDURE..........................................................................................................40
6.6 ANTIFREEZE PROCEDURE (WINTERIZING PROCEDURE IN COLD CLIMATE -UNDER 5°C).......................42
6.7 PERIODIC MAINTENANCE.................................................................................................................................43
6.7.1 MEMBRANE REPLACEMENT............................................................................................................................43
6.8 ADJUSTMENTS ..................................................................................................................................................43
7. TROUBLESHOOTING......................................................................................................................................44
7.1 TROUBLESHOOTING CHART.............................................................................................................................44
8. SUGGESTED SPARE PARTS.........................................................................................................................45
8.1 SHORT TERM CRUISING...................................................................................................................................45
8.2 LONG TERM CRUISING .....................................................................................................................................45

1 –LAYOUT OF MANUAL COD.50Z12/24.B.2018
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1. LAYOUT OF MANUAL
1.1 Structure of the manual
The manual is divided into chapters, which gather all the information necessary to use the system without risk.
Within each chapter there is a subdivision in paragraphs to focus on essential points; each paragraph can be
found with a subtitle and a description.
At the top of each page the heading section is to remind the reader of the scope of the page.
Within the chapter, for example chapter 1, we will have:
1 Chapter title
1.1 Paragraph title
1.1.1 Subtitle
1.1.1.1 Further subtitles
The numbering of the figures and tables, is reset to each chapter; therefore, we will find the prefix indicating
the chapter and the page number, figure or table in progressive that starts from number 1 at the beginning of
each chapter.
1.2 Description of the pictograms
The following symbols will be used in the manual to highlight important indications and warnings:
ATTENTION:
This symbol indicates accident prevention regulations for the operator and / or for any exposed
persons.
CAUTION:
This symbol indicates that there is the possibility of damaging the system and / or its components.
NOTE:
This symbol indicates useful information.

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2. GENERAL WARNINGS AND INFORMATION TO THE RECIPIENT
2.1 Important information
To safeguard the operator's safety and to avoid possible damage to the machine, before carrying out any
operation on the machine, it is essential to read carefully all the instructions manual.
This manual must be complete and legible in its entirety, every operator involved in the use of the machine, or
responsible for maintenance or adjustment operations, must know its location and must have the possibility to
consult it at any time.
All rights of reproduction of this manual are reserved to SCHENKER ITALIA. This manual cannot be transferred
to third parties without the written authorization of SCHENKER ITALIA.
The text cannot be used in other printed matter without the written permission of SCHENKER ITALIA.
The descriptions and illustrations provided in this publication are not binding.
SCHENKER ITALIA reserves the right to make any modifications it deems appropriate.
© SCHENKER ITALIA
THIS MANUAL IS PROPERTY OF SCHENKER ITALIA, ANY REPRODUCTION, EVEN PARTIAL, IS
PROHIBITED.
This manual was drafted according to the requirements of the 2006/42 / EC Machinery Directive.
2.2 Safety warnings
•Wear protective equipment suitable for service operation.
•Clothing must be tight to the body, and resistant to the products used for cleaning.
•Do not remove safety devices or accident prevention protection.
•To check if the plant is correctly installed contact a Schenker service point.
•Verify that the electric and hydraulic connections are in keeping with the indicated specifications.
•Avoid using the plant if the sea water is polluted.
•Children and inexperienced people shall not touch or operate the plant.
•Check periodically that no leaks are present. Avoid installing the plant where a leak may cause damage
and/or jeopardize the safety of the vessel.
•Maintenance should only be carried out by suitably qualified persons or Schenker personnel.

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ATTENTION
Any technical changes or operating conditions indicated that affect the correct operation or
safety of the machine must only be carried out by the manufacturer's technical staff or by
technicians formally authorized by the manufacturer. Otherwise, SCHENKER ITALIA declines
any responsibility for changes or damages that may result from it.
2.3 Warranty
The equipment and the relevant accessories are guaranteed 12 months from delivery. The guarantee does
not include consumable items (filters, carbon filters, membranes, etc.). The “ERS” pressure amplification
device is guaranteed 36 months, provided that the annual maintenance is per-formed at a Schenker service
point.
The guarantee covers faults, defect of materials and parts. It is limited to the replacement or re-pair of faulty
parts. The expense for the disconnecting and reinstalling on the vessel and transport of the equipment from or
to our Service Point, or our factory will be at the customers own expense.
The under guarantee delivered parts transport, will be at customer’s own risk.
In case of repairs under guarantee performed by our technicians on the customer’s vessel, the faulty parts
replacement cost will be at Schenker's expense, while manpower and travel expenses will be charged to the
customer. The guarantee does not include faults caused by negligence in operating, maintenance and
installation of the device (if not carried out by an authorised Schenker Service point).
Dismantling by non-authorized personnel will render void all guarantees. Schenker Italia cannot be held liable
for any direct or indirect damage caused by the malfunctioning equipment, limiting its responsibility to the repair
and replacement of faulty parts.
ATTENTION
SCHENKER ITALIA declines any responsibility for improper use of the machine, for damages
caused as a result of operations not covered by this manual or unreasonable use.

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2.4 Identification of the unit
The Zen can be identified through a serial number printed on the left flange of the unit.
Serial number
Fig. 2-1
2.5 Legislative reference
2.5.1 Directives and standards concerning machine safety
•Machinery Directive 2006/42 / EC, in force since December 29, 2009;
•Low Voltage Directive 73/23 / EEC and subsequent amendments and additions: 93/68 / CEE
implemented by the Law of 18 October 1997 n. 791.
•Electromagnetic Compatibility Directive 89/336 / EEC and subsequent amendments and additions:
93/31 / CEE implemented with D.L. December 4, 1992 n. 476.
•Standards UNI EN 292/1 and 292/2 (safety of machinery);
2.5.2 Respect for the environment –requirements for removal and disposal
ATTENTION
Removal and disposal of materials, as result of the decommissioning of the machine, must be
performed in accordance with the regulations in force, for the safeguard and protection of the
environment.
With regard to removal and disposal, it should be noted that the materials of which the machine is made of are
not of a dangerous nature and consist essentially of:
- Stainless Steel;
- Plastic;
- Carbon fibre;

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- Motors, cables and consumable electrical materials;
- Rubber and polyurethane seals.
After dismantling the machine, the various materials must be segregated according to the regulations of the
country in which the machine has been removed.
The machine does not contain dangerous components or substances that require special removal procedures.
ATTENTION
Different legislations are in force in the different countries, therefore the prescriptions imposed
by the laws and by the agencies designated by the Countries must be observed.

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3. PRODUCT PRESENTATION
ATTENTION
Be sure to follow general safety instructions.
•Wear protective equipment suitable for the transport and handling operations.
•Lift the machines with equipment appropriate to the weight and size of the box, taking the utmost care
and following carefully the instructions on the present use and maintenance manual (attachment points
for loading devices, etc.).
•Make sure that the lifting equipment used is in good condition and correctly maintained.
•Do not stand or pass under the groups to be moved during lifting or transport operation.
3.1 Transport and material handling
The watermaker unit is transported in a cardboard box. In the following table dimension and weight are
indicated.
MATERIALS HANDLING
fig. 3-1
Packaging dimensions and weight
tab.3-1
Model
L cm.
W cm.
H cm.
Weight Kg.
Zen 50
82
49
50
45

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3.2 Stock
ATTENTION
To avoid damage to the system, store the unit in a dry place at a temperature of between 5°C
and 35°C. Very cold temperatures could led to a freezing of the fluid inside the system with the
consequence of a permanent damage of the system.
3.3 Packaging
3.3.1 Packaging contents
PACKAGING
FIG. 3-2
ZEN 50
Watermaker
Pump group
Active carbon filter with electrovalve
5 microns filter with accumulator
Mesh filter
Non-return valve with Tee fitting
Remote panel
10 mt extension cable for remote panel
Installation kit
Filter key
6x8 hose for production

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3.4 Attached documents
The packaging contains the technical documentation (use and maintenance manual, electric and hydraulic
scheme, warnings and instructions).
ATTENTION
•Read carefully the use and maintenance
manual before installing the system.
•Use only recommended material for the
installation (especially hoses, fittings and
seals) in accordance with the manual.
•Do not store the unit under temperature
below 5°C and above 35 °C
DOCUMENTS INCLUDED IN THE PACKAGING
FIG. 3-3
3.5 Technical data
WATERMAKER
WATERMAKER DIMENSIONS
FIG. 3-4

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Hydraulic Connection
Seawater inlet: hose barb for 16mm internal diameter reinforced hose.
Brine Discharge: hose barb for 16mm internal diameter reinforced hose.
Fresh water: ¼’’ fitting, 6x8mm hose.
PUMP
Dimensions
Length: 44 cm
Width: 23 cm
Height: 29 cm
Weight: 10 Kg
Hydraulic Connection
Water inlet: hose barb for 16mm internal diameter reinforced hose.
Water outlet: hose barb for 16mm internal diameter reinforced hose.
Feed pump type: Shurflo diaphragm pump
Filters: n. 1 Cartridge filter 5 microns 2.32" x 9 ¾’’
n. 1 Active carbon filter 2.32" x 9 ¾’’
Power supply: 12 VDC +/- 15% (50Z12 version)
24 VDC +/- 15% (50Z24 version)
Average electric consumption: 250 Watt/h average
Peak electric consumption: 400 Watt
Nominal fresh water production: 50 Lit/h +/- 20% @ seawater 25 °C salinity 35.000 ppm
Fresh water quality: Under 500 ppm TDS average
CEE conformity: In compliance with directives 89/392 CEE sect.1 (general safety machines
requirements), 89/336 CEE (electromagnetic compatibility), 73/23 CEE
(electric safety requirements)
3.6 Features of the product
The water produced by a Schenker plant, produced from clean seawater has a purity of between 350 & 450
parts per million Totally dissolved solids (TDS/PPM), but the potability may not be guaranteed as bacterium
may be present in the watermaker, caused by non-observance of shutdown and cleaning procedures. It is
essential that correct shut down and storage procedures are followed to ensure continued purity of the product
water. UV treatment of the product water may be beneficial.

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3.7 Advantages of the Energy recovery system
Introduction
Thank you for choosing a Schenker Watermaker.
As all the equipment, the knowledge of operating and maintenance procedures allows to use the system in the
best way, and to guarantee a perfect functioning throughout the years. We invite you to read carefully this
manual and to keep it for a quick reference.
Functioning principles
The Schenker watermakers, as an alternative to the high-pressure pumps of traditional systems, utilizes the
ENERGY RECOVERY SYSTEM patented device, which amplifies the pressure of common low-pressure
pumps, and recoup all the hydraulic energy back from the membranes, allowing a high energy efficiency.
The lack of high-pressure pumps makes the system silent and vibration free, and enormously simplifies its use
asno adjustment is necessary for its operating.
FUNCTIONING SCHEME
FIG. 3-5

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3.8 Composition of the machine
The machine is composed of the following parts:
1. PUMP GROUP
2. WATERMAKER GROUP
3.8.1 Pump group
This pump picks up sea water and sends it to the watermaker group, through the pre-filter.
The pump group is composed of the following components:
•5 micron cartridge filter
•Diaphragm pump
•High pressure switch
•Pump box
•Accumulator
PUMP GROUP AND FILTER 12-24 V DC
FIG. 3-6
5 micron cartridge filter with accumulator
Pump box with controller
Diaphragm pumps
High pressure safety switch

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3.8.2 Watermaker group
WATERMAKER GROUP (SIDE VIEW W/O COVER)
FIG. 3-7
Watermaker outlet/discharge
Watermaker inlet
Reverse osmosis membranes
Fresh water production
WATERMAKER GROUP (FRONT VIEW W/O COVER)
FIG. 3-8
Reset valve
Manometer
Depressurization valve
Positioner knob

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The watermaker group is composed of the following parts:
•Reverse osmosis membranes
•Energy Recovery System
•Manometer
•Accumulator
•Depressurization valve
•Positioner
•Reset valve
•High pressure switch
Reverse osmosis membranes. They are installed inside the glass fibre high-pressure housing. Membranes
are n.2 x SW2521 type. Their purpose is to separate the intake high-pressure seawater in two flows: one for
the salt-water drain and one for the fresh water production.
Energy Recovery System. The heart of the system. It has the function of amplifying the pressure supplied by
the pumps and to recoup 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 by the
watermaker unit. The unit is based on cylinders and a central body containing the hydraulic valve necessary
for the system to function.
Manometer. Located on the right side of the watermaker, it measures the working pressure of the watermaker.
Accumulator. This is a black air reservoir. Its function is to reduce and stabilize the pressure peaks during the
watermaker functioning. The device has to be pre-charged with air through the Schrader valve. The pressure
is about 4 Bar. The accumulator is preloaded in factory to the correct pressure.
Depressurization valve. It is used for the air bleeding of the unit. It is located on the top of the watermaker.
Its function is to depressurize the system and to allow the bleeding of air. The valve must be closed during
normal working conditions (completely screwed in) and it is opened during the air bleeding operations (slightly
unscrewed).
Positioner. It is a stainless steel threaded arm, with a black knob, located on the right hand side of the
watermaker. Its function is to reset the unit in case of hydraulic block.
Reset valve. It is installed on top of the ERS it is recognizable by the little blue lever. The valve must be closed
during normal functioning (lever perpendicular to the valve). This valve has the function of allowing the resetting
of the ERS in case of a system block. It must be opened before screwing in the valve positioner.
High pressure switch. It Is hydraulically connected to the pump group. It stops the system if the pump
pressure exceeds 9,5 bar. In this case a high-pressure alarm is activated on the control panel.

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3.8.3 Accessories
The main accessories of the watermaker are the following:
•Active carbon filter
•Electrovalve
•Non-return valve
•Mesh filter (strainer)
ACCESSORIES
FIG. 3-9
Non-return valve
Active carbon filter
Mesh filter
Electrovalve
Active carbon filter. This filter is connected between the fresh water pressurized system of the boat and the
electro valve on the filter holder. On the filter inlet is positioned a manual valve that allows replacement of the
cartridge without depressurizing the fresh water system of the vessel.
Electrovalve. It has the function of switching from seawater intake to fresh water tank when washing the
watermaker.
Non-return valve. It stops water flowing out of the inlet hose. It must be installed vertically. It stops leaking of
fresh water from the seacock whilst the washing procedure commences.
Mesh filter. The machine is equipped with a mesh filter to protect the pump from macro sediments. This is
placed between the seacock and the pump.

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4. MOUNTING AND INSTALLATION
4.1 General criteria
Before commencing the installation, it is important to carefully plan all the activities, by evaluating all of the
siting locations of the equipment. The main points to focus on are the following:
•Selecting of seawater inlet/outlet
•Positioning of the main units (pump group, watermaker group, active carbon filter).
•Positioning of the thermal-magnetic circuit breaker.
•Routing of the hoses and electric cables.
CAUTION
For a correct installation of the watermaker please follow the instructions below:
•The through-hull fitting should be located in a central and low position on the hull, in the way
that air can’t be sucked in to the pump and subsequently the watermaker itself.
•The non-return valve has to be installed under seawater level and as close as possible to the
through-hull fitting, in vertical position.
•The pump must be installed as low as possible in respect of the waterline and as close as
possible to the seawater intake (through-hull fitting). No more that 2m away unless a positive
feed is achieved by locating the pump below the waterline.
•The watermaker unit must be positioned and arranged on an adequate support which is able
to sustain the weight (about 30 Kg). The max allowed room temperature where the watermaker
is installed must not exceed 40°C
CAUTION
The pump group must be installed in a ventilated place, in order to facilitate the cooling of the
electric motor.
ATTENTION
The external surface of motor of the pump can reach high temperature; therefore, it is
recommended to avoid possible contacts with inflammable liquids and materials.
NOTE
Once an installation plan has been made it is recommended to make a schematic drawing of
the hydraulic and electric connections and attach them to the manual for future reference.

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4.2 Components mounting
4.2.1 Pump group
The diaphragm pump group must be installed if possible below the waterline, and as close to the water inlet
as possible (2m max).
The pump group should be installed in an adequately ventilated area, with the purpose of aiding the cooling of
the motor. The max permitted room temperature must not exceed 40°C.
Avoid the contact or the proximity with inflammable material or liquid, since the motor surfaces can reach
elevated temperatures. Avoid locating the pump wherever a possible loss of water can involve damages or
jeopardize its safety. The pump must be installed on a base sufficiently horizontal, suitable to sustain the
weight of the group. The pump is normally fixed on the support structure by passing bolts.
4.2.2 Watermaker group
Install the watermaker above the pump, or at the same level. The watermaker can be installed both in horizontal
and vertical position and can be fixed with L brackets and rubber feet provided. The brackets are color-coded
according to the installation.
L BRACKETS
FIG. 4-1
VERTICAL AND HORIZONTAL FIXING
FIG. 4-2

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MOUNTING PROCEDURE
FIG. 4-3
POSSIBLE CONFIGURATIONS
FIG. 4-4
ok
ok
NO
ok