OPERATION AND MAINTENANCE MANUAL

Transcription

1 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. First start-up procedure 3.2. Normal operating procedure 4. Maintenance 4.1. Shutdown procedure 4.2. Maintenance and recurrent inspections 4.3. Troubleshooting 5. Safety cautions 6. Warranty 1

2 Rev Introduction 1.1 General Thank you for choosing a Schenker Watermaker, and we are sure that the plant will contribute to make your cruises more comfortable and more pleasant. As all the equipment aboard, 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 aboard for a quick reference. The Modular plant, as alternative to the high pressure pumps of traditional plants, 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 an high energy efficiency and the possibility to supply the watermaker directly from the batteries. The ENERGY RECOVERY SYSTEM operating components are reduced to the minimum, thanks to 2 international patented solutions that eliminate the necessity of pilot valves. The lack of high-pressure pumps makes the system silent and vibrations free, and enormously simplify the use because no adjustment is necessary for its operating. 2

3 1. Introduction 1.2 Technical data WATERMAKER GROUP Dimensions Length: Width: Height: Dry weight: Connections: Seawater intake Salt water outlet Fresh water outlet 120 cm 24 cm 40 cm 56 Kg. holder for hose int. diam. 20 mm. holder for hose int. diam. 16 mm. compression fitting for hose int. diam. 6 mm. int. X 8 mm. external PUMPS GROUP Dimensions Length: Width: Height: Dry weight: Connections: Seawater intake Salt water outlet Filters: 42 cm 15 cm 23 cm 13 Kg. holder for hose int. diam. 20 mm. holder for hose int. diam. 20 mm. 5 micron 9 ¾ propylene type Power supply: 24 Vdc +/- 20% Power consumption: max 600 Watt Production performance: 150 Lit/h +/- seawater 25 C - salinity ppm Quality of water produced: CEE conformity: average of 400 ppm TDS In compliance with directives 89/392 CEE sect.1 (general safety machines requirements), 89/336 CEE (electromagnetic compatibility). 3

4 1. Introduction 1.3 System description The Modular 150 systems are based on 2 units: PUMPS AND FILTER GROUP. This unit have the duty of picking the sea water up and send it to the watermaker unit at a certain pressure (about 9-11 Bar). The pump is equipped with a pressure switch for high-pressure shutdowns, calibrated at about 18 Bar. The pressure switch can be adjusted removing the hexagonal nut positioned on the device and operating on the screw positioned inside. Turning the screw clockwise the pressure shut down set increase, whereas decrease turning the screw anti clockwise. The pump group is equipped with an electric box that contain the power relay that activate the electric motor of the pump. The terminal P1 receives the start-stop consent from the computer. The pump motor is IP 20 protected and therefore must be carefully protected from water sprays. The orange filter, positioned between the pump outlet and the watermaker inlet, is fitted with a 5 microns cartridge, and protects the watermaker unit from sediments and debris. Pump box 4

5 WATERMAKER GROUP. 1. Reverse osmosis membrane 2. Manometer 3. Flow meter 4. Depressurization valve 5. Positioner 6. Reset valve The watermaker group is based on the main following components: Reverse osmosis membranes, installed inside blue color high-pressure housing. Their job is to separate the intake high-pressure seawater into two flows: one for the salt-water drain and one for the fresh water production. Energy Recovery System. It has the function to amplify 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 periodically by the watermaker unit. The unit is constituted of 2 cylinders, and a central body containing the hydraulic valve necessary for the system functioning. Manometer. It is located on the front panel, and it measures the pumps running pressure. Flowmeter. It is located on the front panel, and it measures the fresh water instantaneous capacity sent to the tank. The device accuracy is +/- 20%. Pulsation dimmer. It is constituted of a cylindrical recipient and has the function to dampen the pumps pressure oscillations during the watermaker functioning. The dimmer needs to be precharged 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 9 Bar. The pressure dimmer is charged in factory at the right pressure, but it is opportune to verify the pressure level at the first start-up. Depressurization valve. It is utilized only during the air bleeding phase, at the first plant startup. It is recognizable by a bleu lever and it is located on the right of the watermaker. Its function is to depressurize the plant and to allow the bleeding of air at the first plant start-up. The valve 5

6 must be closed during normal working conditions (vertical position), and it is opened during the air bleeding operations (horizontal position). Positioner (5): It is a stainless steel threaded arm, with a black knob, located on the right side of the top unit of the ERS. Its function is to reset the unit in case the system blocks during the restart. Reset valve (6). It is installed on the left of the top unit of the ERS and it is recognizable by the little blue plastic lever. 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. 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. Emergency microswitches Remote panel cable connector Electric connections 6

7 2. Installation 2.1 General criteria and material required 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 Pump group. The pump is partially self-priming. Anyway it is strictly recommended to install the pump below the watermaker, and as low as possible respect the sea level, and as close as possible respect the sea water intake. The pump cannot run dry. Therefore it is very important avoid to start the system if the intake valve is closed or if inlet filters are clogged. The pump group needs to be installed inside to adequately ventilated room, with the purpose to facilitate the cooling of the pump and not subject to condenses or drippings. Avoid the contact or the proximity with inflammable material or liquid, since the pump surfaces can reach elevated temperatures. Avoid locating the pump wherever a possible loss of water can involve damages or jeopardize its safety. It is necessary to foresee the necessary space to be able to unscrew the filter container for replacing the cartridge. The pump must be installed on a base sufficiently horizontal, suitable to sustain the weight of the group. It could be necessary to realize a suitable wooden or fiberglass structure if an horizontal support is not available. The pump is normally fixed on the support structure by passing bolts. Watermaker group. Concerning the watermaker unit installation there are not height limits in comparison to the seawater level. Avoid to install the system wherever any possible leak may cause damages to the boat or jeopardize its safety, since possible leaks due to accidental causes (pipe bursting, hose clamp loosening, equipment failure, etc.) may cause water losses. The hydraulic intake and outlet connections are positioned, in the standard version, on the left of the unit. Therefore, it is necessary to foresee a minimum distance of 20 cm. to allow the pipes laying. The watermaker unit must be installed on a base sufficiently horizontal, suitable to sustain the weight of the group. It could be necessary to realize a suitable wooden or fiberglass structure if an horizontal support is not available. The watermaker unit is equipped with vibration-damping devices, but however it is preferable to not install the unit on a plan particularly subject to vibrations. Possible locations of the watermaker group are: engine compartment, closets, and peak tank. It is advisable to install the unit in such position to make the instrumentation easily visible, and make the valves (located on the right of the unit) easily accessible. The watermaker is normally fixed on the support structure by passing bolts. 7

8 Accessories The back flow valve must be installed vertically, as close as possible to the sea water inlet. 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. The following conditions must be respected : The flow of the existing fresh water pump must be min 18 lit/min. Flushing must always be carried out with the pressure water system ON. Salt-water waste. (After passing through the watermaker) The salt-water drain shall be ½ minimum size and it has to be preferably above the seawater level. It is possible to use offtakes from existing apparatuses, provided that it is not the engine cooling water drain or apparatuses that drain out water with elevated pressure. 8

9 2. Installation 2.4 Hydraulic connections Exhausted discharge Armovin type hose int. dia. 16 mm. Plumb to pressure side of boat fresh water sys- Reinforced hose PN20 min int. dia. 20 mm. Armovin type hose int. dia. 20 mm. 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 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 20 min. reinforced hose. An inadequate hose could burst, jeopardizing seriously the safety of the boat. 9

10 Hydraulic connections: Low pressure max 3 bar Medium pressure max 20 bar -connections sea water inlet- net filter - backflow valve inlet. -connections fresh water pressurized system carbonfilter - backflow valve pump inlet - pump outlet - 5 microns filter watermaker inlet. PN 5 stainless steel spring type hose Section: 20 mm int. diam. PN 20 reinforced hose Section: 20 mm int. diam. Low pressure max 3 bar -connection watermaker s exhaust discharge PN 5 stainless steel spring type hose Low pressure max 3 bar Section: 16 mm int. diam. - Connection to the fresh water tank Small 6X 8 blue pipe (furnished) IN and OUT connection of the pump Connect the in and out of the pump as shown. See as well the arrows marked on the pump 10

11 IN and OUT connections of the watermaker 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). Fresh water connection The connection has to be made, using the small hose furnished with the equipment, and relevant endowed fittings. The connection has to be made between the little 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 where to connect the endowed male connector. 11

12 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 Supply The power supply, coming from the 220 VAC electric group, needs to be connected to the apposite terminals 220VAC provided inside the pump box. On the supply wiring must be installed an automatic, 2 poles, circuit breaker with 5 ampere cutoff current and all the protection (including a differential switch) requested by the local law. The section of the cables will be 4 mm2 min. The computer box will be powered 12-24V, directly from the service batteries or through a 230/12-24 charger. Connections between the pump box and the computer box 2 cables P1/- (section 2,5 mm2) will connect the pump box with the computer box, and will provide the start/stop command to 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.) 12

13 Wiring connection diagram Watermaker pressure switch Elecrovalve Batteries or charger 13

14 3. Operation 3.1. Remote panel commands KEYBOARD 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: START 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. STOP 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. WASHING 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 MENU mode and modify some parameters. Pushing it repeatedly the different MENU 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. 14

15 The STOP push button allows to exit from the MENU function. Menu 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. BY-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 BLOCKED, 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. MESSAGES SYSTEM 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. SYSTEM WASHING It indicates that the unit is in washing mode (pumps and electrovalve on). 15

16 SYSTEM BLOCKED 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 PUMP 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 MENU (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. 16

17 3. Operation 3.3. Normal operation procedure It is always strictly recommended to select the automatic washing, pushing WASH- ING. 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. Single 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. 17

18 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 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 SYSTEM 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. 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 18

19 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. 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 totally the depressurization valve. 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. 19

20 4. Maintenance 4.2 Verifications and periodic maintenance The following periodic procedures are to be followed to maintain trouble free operation: OPERATION EVERY PROCEDURE Check and clean Strainer check and cleaning Every 5 days Unscrew anticlockwise the filter holder. 5 micron cartridge replacement Every days in average conditions (4 hours/day usage). 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 in the range 9-11 bar. There is a small pressure peak, of about 0,5 Bars during commutations. Membrane replacement The reverse osmosis membranes have an average working life of 7 years. After 5 years they may start to degrade. If in doubt as to their condition contact a Schenker service point. 20

21 4. MAINTENANCE 4.3 TROUBLESHOOTING PROBLEM PROBABLE CAUSE SOLUTION Pump do not start Pressure switch burned or disconnected Total electronic failure Restore Activate the pump with the miscoswitch System is blocked Perform Reset Pump start but stop at high Dirty pump filter Replace cartridge pressure Dirty membranes Trouble in the cycling system Perform cleaning cycle Contact a Schenker service While functioning the pump starts-stops Pump pressure switch not calibrated Dirty filter or membranes point Increase the pump pressure switch calibration (see pag. 4) Clean or replace Amperage increased Pump head damaged Replace pump head Metallic and buzzing pump Insufficient inlet pump water Check installation, water noise flow inlet, net filter Exhausted batteries Check battery charge Low production / normal or Air in the plant Perform bleeding low pressure Seal system leak Contact a Schenker service point Low production / high pressure (> 12 Bar) Leaking in the plant Cold sea water Filter clogged Dirty membranes Loose connectors ERS loss Normal operation Clean filter Perform cleaning cycle Tighten connectors Contact a service point Probe (system pressure switch ) troubleshooting: If the system goes frequently in blocked position (generating the message SYSTEM 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. 21

22 5. SAFETY WARNINGS. Don t open the pump box if the power is on. Do not touch the pump (which can reach high temperatures) when the plant is functioning. Do not locate the pump near objects either inflammable or that can deteriorate if exposed to high temperature. Check if the plant is correctly installed eventually contacting a Schenker service point. Verify that the hoses used for installation are in keeping with the indicated specifications. The water produced using clean sea water will have an average quality of 400 ppm TDS. Unless the correct cleaning procedures are carried out in accordance with this manual, there may be bacteria present in the produced water. Therefore avoid drinking the water produced by the plant if an UV sterilizer has not been installed. Avoid using the plant where water is polluted (ports, or close to built-up areas, etc.) Children and inexperienced people shall not touch or operate the plant. Check periodically that no leakage is present. Do not switch on the plant when the boat is unattended. Avoid installing the plant where an eventual leakage may cause damages and jeopardize the safety of the boat. Unqualified and non-schenker personnel shall not perform any maintenance work. 22

23 6. WARRANTY The equipment and the relevant accessories are guarantee 12 months starting from the date on the delivery document of the merchandise. The guarantee does not include expendable materials (cartridges, active-carbon filters, membranes, etc.). The ERS pressure amplification device is guaranteed 36 months, provided that the annual maintenance is performed in one of Schenker service point. The guarantee covers every fault or defect of materials and parts and it is limited to the replacement or repair of faulty parts. The expenses for the device disassembly and reinstallation on the boat and for the transport of the equipment from or to our Service Point or our factory will be on customer account. The under guarantee delivered parts transport will be at customer s own risk. In case of repairs under guarantee, directly performed by our technicians on the customer boat, the faulty parts replacement cost will be on Schenker account, while manpower and travel expenses will be charged to the customer. The guarantee does not include the faults caused by negligence in operating, maintenance and installation of the device (if they are not performed by an authorised Schenker Service point). If non-authorized personnel perform the disassembly, every obligation of this guarantee will automatically lapse. Schenker Italia can not be held liable for any direct or indirect damage caused by the malfunctioning of the equipment, limiting its responsibility to the repair and replacement of faulty parts. 23