Operation Manual For The Rainman Petrol (Gasoline) System v1.6p
Contents
1. JLA 017U0 aunssauig Oy RIA RIA yun AWwouoaj SISOWSO asJaAay How The System Works The following two diagrams give an understanding of how your desalination system operates 1 An impeller lift pump draws seawater up to the main unit and creates positive pressure for the high pressure pump The pre filter removes particulates of up to 5 micron from the water A high pressure pump delivers high pressure in the system for the reverse osmosis membranes to operate The relief valve only opens if the control valve is closed excessively or a pressure washer gun is attached and idle A high pressure hose carries filtered water to the reverse osmosis membranes Multiple RO membranes are connected in series or a single RO membrane The manual control valve at the end of the system is used to set system pressure to approximately 55 bar 800 psi Brine water is released to the sea while fresh water is routed to your drinking water tank Both the lift pump and high pressure pump are powered by a reliable Honda 50cc engine juel Jae I SS A SOH SAFENA ayeUI yonpod yndjno SOH aunssalq YsIH aug ase SISOUIS E aslanay yun Ajddns aunssaug JdavuoJ wa sAS uewUIeEY abne BARA H ase auB1quWwaN yun Ajddns aumssalsg onewayos Wa sAS Setting Up Your New System Thank you for purchasing a Rainman portable desalination system We hope you enjoy the simplicity of the sy2. Starting The System 1 On the engine switch the fuel valve lever to the open position away from you and close the choke all the way to the right FUEL VALVE CLOSED 2 Pull the cord to start the engine As the engine warms gradually adjust the choke until the engine runs smoothly 16 Water will start flowing out the green brine output hose Gradually close the pressure control valve on the reverse osmosis unit by turning clockwise until the pressure gauge reads 55 bar 800 psi The correct pressure is indicated by the dark green area on the pressure dial For maximum membrane life raise the pressure no more than 20 bar 300psi a minute Within 15 seconds water will start flowing out the white product hose AN Never exceed 58 bar 850 psi If you over tighten the pressure control valve a relief valve in the Pressure Supply Unit will release and water will recirculate within unit This prevents damage to the RO membranes from excess pressure However prolonged operation of the relief valve can damage the unit A If you are using your desalinator for the first time run for at least half an hour to flush all preservatives from the system Every time you use the unit let fresh water flow out the product hose for approximately 30 seconds to ensure any residual salt in the system is washed away You should test the product water at this point with a salinity meter or by taste I
3. When the bucket is almost empty switch off your desalinator leaving the fresh water in the system A Never allow the bucket to run dry while the pump is running You will damage the unit A Never flush your desalinator with water containing chlorine which will damage the membranes That includes town or tap water which contains chlorine or water from a vessel s tanks which also may contain chlorine Chlorine damages RO membranes A If you plan on not using your watermaker within the next few weeks you ll need to pickle the membranes 2 Pressure Washing By connecting the pressure washer gun sold separately the Rainman Desalinator becomes a powerful seawater pressure washer To Operate 1 Attach the pressure washer quick link hose to the Pressure Supply Unit Place the intake hose in the water Before starting hold down the trigger on the pressure washer wand and at the same time start the Pressure Supply Unit A The trigger must be depressed when you start the engine 28 When the trigger is released water will re circulate inside the pump to release pressure Do not allow the motor to run for more than 30 seconds with the trigger released as the water can heat up and damage the unit Be careful using the pressure washer on delicate surfaces The pressure washer stream is powerful and can damage some surfaces including paint and wood lf you use town or chlorinated water with you
4. rainman Portable Petrol Gasoline Desalinator Operation Manual Rainman Technology Pty Ltd www rainmandesal com Operation Manual v1 6p Table of Contents Getting To Know Your System 1 Pressure Supply Unit 1 Reverse Osmosis Case 2 Reverse Osmosis Single Membrane 3 How The System Works 4 Rainman System Concept 5 System Schematic 6 Setting Up Your New System 7 Getting Started 7 Fuel Tank Filling 9 Installing Your Desalinator Optional 10 Operating The Desalinator 11 Setting Up For Use 11 Starting The System 16 Desalinating While Under Way 21 Desalinating Brackish Water 23 Shutting Down 25 Freshwater Flushing 26 Pressure Washing 28 Care and Maintenance 30 Reverse Osmosis Membrane Care 30 Pickling Your Desalinator 32 Pickling In Cold Climates 33 Cleaning and Changing The Pre filter 34 High Pressure Pump Maintenance 35 Changing Engine Oil 36 Jabsco Lift Pump Service 36 RO Case Mounting 37 Flow Gauge Mounting 38 Physical Storage 39 Shipping 40 Service 41 Troubleshooting 42 Warranty 45 Getting To Know Your System aI Z s p109 savers woo Y ajpuey puryaq YIUMS IM au BAILA JOJ3UOJ aunssauq a8neg aunssaug Sjassan a1nssauig 1ajem j2npoug SISOWSO dS1BAJY SOH SIUM jassan ainssaig SISOWSO as1JAJY NSd Wouy Uy 1ajem PNPOId aunssaig YB8 H asoH SWUM SOH x281g sjo14juo oul No aInssaid YIH indino sung SOH LlG SOH UBIO See ef a8neg ainssaid
5. include estuaries harbours and saline aquifers bore water After heavy rain some sources of seawater can become less saline The Rainman watermaker can be used to desalinate brackish water A much lower pressure is needed so when desalinating brackish water only increase pressure until the rated fresh water production rate of your unit is achieved The pressure can be as low as 200 PSI 13 bar When desalinating brackish water Rainman recommends installing our optional flow gauge to accurately measure fresh water production rates The rated fresh water production rate for the High Output Unit twin 40 inch membranes is 140 litres an hour 2 3 litres a minute The rated fresh water production for the Compact RO Unit twin 21 inch membrane and the Economy RO Unit single 23 40 inch membrane is 70 litres an hour 1 15 litres per minute A Never exceed the rated fresh water flow of your system You will damage the membranes and this will not be covered by warranty When desalinating any source other than ocean seawater ensure the water is not contaminated with any substance that can damage the RO membranes and or be toxic to humans Some examples include oil often found in harbours estuaries and marinas chlorine found in town water and runoff from town water and mineral deposits found in bore water If in doubt do not use your desalinator 24 Shutting Down 1 To switch the unit off first very
6. not fresh membrane membrane Insufficient time e Allow your unit to run from startup for up to half an hour testing at regular intervals Biological fouling in e Replace pre filter pre filter Biological fouling in Replace membrane membrane 43 e Product water Pressure set too e Decrease pressure flow rate higher high via valve than rated flow Unit operating in e Decrease pressure brackish water until rated fresh water Damaged RO flow is achieved membrane e Replace membrane e Excessive Cavitation due to e Unblock intake hoses vibration in high blockage and pre filter pressure hose Airlock inside high e Open pressure pressure pump control valve completely until air exits system completely 44 Warranty Rainman desalinator Pressure Supply Unit and RO membrane units are guaranteed to be free of manufacturer defects and to perform within the published specifications for a period of one year from the date of shipment to the original purchaser In the event of a warranty claim Rainman Technology will inspect the defective component and repair or replace at our discretion All shipping charges are the responsibility of the purchaser to and from our office in Sydney Australia The warranty is void if the system was mishandled abused or not operated maintained as directed by this user manual Consumable items such as the pre filter cartridge or engine lubricant are not covered under the terms of this war
7. pre filter housing Some pre filters can turn black if stored too long in pickling solution A When storing the unit for more than a month discard the pre filter and drain the pre filter housing Some marine deposits can continue to decompose even when immersed in a pickling solution lf you know you won t be using your desalinator you can flush the unit with fresh water to prevent fouling for a week or two in cool climates less in warmer climates If you won t be using it for longer periods of time the membranes can be preserved or pickled using a preservative solution 31 Pickling Your Desalinator Pickling fills the membrane housings with a biocide that prevents fouling Once pickled membranes can be stored for six months or more 1 To pickle your desalinator add 5 tablespoons of food grade sodium metabisulphite SMBS to a 10 litre 2 5 gallon bucket of fresh water to make a 1 1 5 solution of SMBS After opening the pressure control valve completely switch off the unit remove the intake hose from the source water and place it in the open container of fresh water Start the unit again keeping the pressure control valve open and run the entire contents through the system 2 When the bucket is almost empty switch off your desalinator leaving the pickling fluid in the system When storing the unit for more than a month discard the pre filter and drain the pre filter housing Your desalinat
8. MARK ASYE yw Li 1 LA A w pe Je MAXIMUM PO aie A FUEL LEVEL YO ALA i wa A A Jon A d V D A AS Sn d N j Ni an t X A Es Iw k Le vk vu co 4 L er L e T h y ek b d GAN SJ 1 Remove the cover on the Pressure Supply Unit 2 With the engine stopped and the unit on a level surface remove the fuel cap 3 Check the fuel level If the level is low fill the fuel tank to the bottom of the fuel level mark Do not overfill past the maximum fuel level shown Refill carefully to avoid spilling fuel Premium fuel is recommended Do not use fuel that contains ethanol A Wipe up any spilled fuel before starting the engine 4 After refuelling tighten the fuel cap securely A For more information about the Honda motor consult the provided Honda owner s manual 9 Installing Your Desalinator Optional For full or partial installation please access our website for guidelines www rainmandesal com support htm Brine Output c a G 2 A O E A Oo w 2 OI gt vo a Vessel Water Tank Pressure Hose Pickling Bucket Rainman Installed Pressure Supply Unit 10 Operating The Desalinator This section explains how to operate the system on a regular basis including set up starting stopping and flushing the system Setting Up For Use 1 Place the Rainman Pressure Supply Unit PSU and Reverse Osmosis RO Unit in a stable
9. astic bag before it is packed 40 Service If your desalinator exhibits any of the following problems stop the unit immediately and consult a qualified technician e Unusual noises or vibration e The pressure gauge will not reach 55 bar 800 psi e With the unit running there is no water flow through the green brine output water hose e The white product hose continues to make salty tasting water after several minutes at 55 bar 800 psi Major leaks of water in the Pressure Supply Unit or the RO unit 41 Troubleshooting e Symptom e Possible Cause Solution Pressure e Air in system e Check suction lines gauge will not for leaks reach 60 bar Fouled inlet hose Clean hose or Fouled pre filter s Replace filter The Pressure cartridge and or the Cavitation Noisy Check intake lines for product amount operation restrictions drops Airlocked pump Allow more time to prime and ensure that there are no air suction leaks Motor sputters Fuel tank empty Add fuel and dies Motor suddenly Low oil level Add oil to upper limit cuts off triggering cut off marked in Getting switch Started section 42 e Low fresh water Damaged e Consult a qualified flow membranes technician Insufficient e Make sure pressure pressure gauge reads 55 bar 800 PSI Cold water e Product water flow temperature will decrease approximately 3 for each degree Celsius e Product water Damaged e Replace RO
10. f the product water is pure put the product water hose in a fresh water tank and allow the system to run uninterrupted until full Check the pressure gauge approximately every ten minutes and adjust the pressure if necessary to 55 Bar 800 psi Use the white 10 metre product water extension hose if necessary to fill multiple tanks without the need to move the desalination system Unless the weather is hot we recommend you replace the cover on the Pressure Supply Unit during operation When replacing the cover take care to ensure the intake hose is placed in the indentation on the bottom left hand corner of the cover lf the ambient temperature is over 35 C 95 F then leave the cover off to help cool the engine The 0 7 litre 0 2 gallon tank should allow the unit to run for approximately 70 minutes If you stop the machine or it stops due to low fuel and you intend to start it again within the next 30 minutes it is advisable to remove the lid to prevent excess heat buildup inside Excess heat buildup inside can cause fuel in the carburetor to vaporise meaning that the machine will be hard to start again until it has cooled down Product water flow will vary depending on temperature and salinity The warmer the water the more fresh water will be produced The higher the salinity the less fresh water will be produced 20 Desalinating While Under Way Your Rainman desalinator can be operated while under wa
11. ing the gauge cut the white product hose at the appropriate length and push connect it to the LEFT hand side of the gauge The remaining white hose should be connected to the RIGHT hand side as shown 38 Physical Storage Your Rainman Pressure Supply Unit has a petrol gasoline engine in it In order to avoid oil draining from the sump the System should not be inverted Stow it securely in a dry place in an upright position below the deck of your yacht or in a locker if used in marine environment Normal heeling of a yacht will not cause oil spillage For long term physical storage we recommend running the fuel tank dry 39 Shipping To prepare the unit for shipping 1 Remove the fuel from the carburetor and the tank If the tank is empty just run the machine until the fuel in the carburetor is gone Don t run the machine without the intake hose in water The easiest way is to put the hose in a bucket and just let the water spray out onto the ground If the tank still has fuel in it you can siphon it out or run it until the fuel is all gone It is important to leave the tank open for a day or so to make sure the last fuel evaporates You can help get the last fuel out by putting a clean rag in the tank to soak it up 2 Engine oil must be removed from the motor It s OK if there is a little bit of oil left 3 The travel plug must be in the high pressure pump 4 The machine should be put inside a pl
12. or is now pickled and can be stored for up to 6 months A Never allow the pickling solution bucket to run dry while the pump is running You will damage the unit 32 Pickling In Cold Climates If there is a chance that your desalinator will be exposed to freezing temperatures you ll need to pickle the unit with propylene glycol otherwise known as potable antifreeze This will prevent damage to the unit through freezing as well as preventing biological growth 1 To pickle your desalinator with potable antifreeze fill a bucket with ten litres 2 5 gallons of propylene glycol diluted to manufacturer s specfiications With the unit switched off place the intake hose in the open container of potable antifreeze 2 With the pressure control valve wide open start the unit Watch the brine output and switch the unit off when you see antifreeze coming out of it Your unit is now protected from freezing and from biological growth for up to six months 33 Cleaning and Changing The Pre filter Pre filters should be changed if they become discoloured 1 To change the pre filter place the Pressure Supply Unit on the deck of your vessel Use the supplied filter wrench to remove the clear filter housing 2 Replace the filter and then fill the filter housing with seawater to aid the priming of the pump High Pressure Pump Maintenance General Pump the high pressure pump manufacturer recommenas the high pres
13. place on the deck of your vessel A swim platform is an ideal location ko 11 A Make sure the PSU is no more than 2 metres 6 feet above water level The unit will work best operating as close to water level as possible Unzip the cover on the Reverse Osmosis RO unit Remove and uncoil the three hoses from the RO unit Connect the black high pressure hose to the Pressure Supply Unit 12 Open the Pressure Supply Unit by removing the front Cover Remove the clear plastic spiral intake hose from inside the Pressure Supply Unit remove the cap and attach the suction strainer A Starting the unit with the cap in place will damage the pumps Place the intake hose in the source water 13 A Make sure the intake hose is submerged and is not on the sea floor or among seaweed which can cause blockage Place the green brine output water hose in the source water Place the white product water hose on the deck of your vessel A Make sure the product water hose is NOT initially in your fresh water tank Make sure the pressure valve in the reverse osmosis unit is in an open position fully anti clockwise 14 A Never allow water containing chlorine to enter your desalinator That includes town or tap water which contains chlorine Chlorine damages RO membranes A Never run the unit dry You will damage the pumps A Never start the motor in an enclosed space 15
14. r Rainman pressure washer make sure you flush it completely before using the reverse osmosis unit The chlorine in town water will damage the reverse osmosis membranes Care and Maintenance Your system is designed and built with high quality components This section shows how to properly care for your system to ensure it lasts for many years Reverse Osmosis Membrane Care The Dow Filmtec membrane or membranes in your Rainman desalinator should last between five and ten years if well cared for The main way RO membranes are damaged is through biological growth or fouling on the surface of the membranes This occurs if seawater is left sitting inside the RO pressure vessels for extended periods of time In temperate climates growth can occur in less than two weeks in tropical climates growth can occur in as little as a few days There are no precise times in which fouling can occur only rules of thumb A conservative approach to membrane care will ensure long membrane life Regular use of your desalinator is the most effective prevention against fouling That means using your desalinator at least weekly in temperate climates and at least every few days in the tropics 30 lf unused for 2 days or less No pickling necessary lf unused for between 2 and 7 Fresh water flush days lf unused for between 7 and Pickle the system 30 days lf unused for 30 days Pickle the system discard the pre filter and drain the
15. ranty Extended or commercial use of the system is not covered in the terms of this warranty Rainman Technology s liability under this warranty is limited to repair or replacement of our systems to the original purchaser Under no circumstances is Rainman Technology Pty Ltd liable for consequential damages related to failure of the system to perform 45
16. slowly turn the pressure control valve in an anti clockwise direction until the pressure reads less than 300 psi 20 bar 2 Press and hold the engine kill switch until the engine stops Turn off the fuel valve lever by pulling it towards you Replace the cap on the intake hose to keep the unit primed during storage 5 Replace the rubber boots on each of the other hoses to keep the system clean and prevent water dripping while stowed A Wait 60 seconds for internal pressure to dissipate before disconnecting the black high pressure hose from the Pressure Supply Unit A Make sure the exhaust has cooled before moving the unit For more information please watch the instructional video at www rainmandesal com support html 25 Freshwater Flushing We recommend flushing your desalinator with fresh water after every use to prevent biological fouling and to rinse salt from the entire system Freshwater flushing will prevent fouling for up to two weeks in temperate climates 1 When the fresh water tank is full remove the product water hose and fill an open container of water with approximately 10 litres 2 5 gallons of fresh water 26 Open the pressure control valve completely and switch off the unit Remove the intake hose from the source water and place it in the open container of fresh water Start the unit again and with the pressure control valve remaining open run the entire contents through the system
17. stem and have great adventures for many years to come Please read this entire manual prior to using the system Getting Started If your Rainman desalinator was delivered by freight and not picked up from a dealer the Pressure Supply Unit will arrive with the engine oil sump and fuel tank dry and the pressure pump will have a leak free travel plug fitted If your desalinator arrived by freight follow these instructions 1 Fill the engine with 200 ml 21 US Qt of grade 10W 30 or SAE30 motor oil Note motor has low oil cut off switch so ensure you operate towards the upper limit if in marine environment with possible uneven surfaces OIL FILLER CAP DIPSTICK ja y d lt j s i PI d Ni We rt el l K vwe H y LZ D L a 4 A ra f titer Ya i e r UPPER LIMIT y Kee tate OIL FILLER CAP bottom edge 7 Remove the hex oil plug from the high pressure pump and replace with the supplied breather plug The breather plug has the world OIL on it Save the travel plug in case the unit needs to be shipped in the future T WO WE ae Ca E LA The reverse osmosis membranes inside the reverse osmosis unit are supplied immersed with a preservative pickled This preservative can cause gastro intestinal upset if not flushed The system will need to be run for at least 30 minutes before product water is consumed Fuel Tank Filling FUEL FILLER CAP FUEL LEVEL fA VE
18. sure pump s crankcase oil be changed after an initial 50 hour break in period Oil should then be changed every 3 months or at 500 hour intervals thereafter General Pump recommends its 100 Series oil which is a SAE 30 weight ISO 100 non detergent oil Crankcase oil can be drained by using an oil extractor to suck the oil from the crankcase breather hole To refill the crankcase oil insert a long stemmed funnel through the breather hole and add 350ml 12 ounces of oil Oil levels can be checked via the clear inspection window on the front of the high pressure pump 35 Changing Engine Ou Engine oil can be drained either by tipping the unit forward or by using an oil extractor Only tip the unit forward when the fuel tank is empty Jabsco Lift Pump Service The Jabsco lift pump impeller can be accessed by removing the three bolts securing the impeller cover 36 RO Case Mounting The RO case can be mounted to a bulkhead or other surface using the mounting kit included Place the plates over these holes in the rear of the inside of the Case And fasten securely using the screws supplied 37 Flow Gauge Mounting The optional extra flow gauge can be mounted in your RO case using the 2 strips of 3M VHB double sided tape supplied on the rear of the gauge Ensure the surface of each RO tube where the tape will adhere is clean and free of any grease After mount
19. y The recommended method is to install a dedicated through hull fitting in a position that will always be under water in all angles of heel The Pressure Supply Unit will need to be placed securely and protected from getting wet The green brine hose is then securely directed overboard Some owners have reported success in using their watermaker while under way without a dedicated through hull by trailing the intake hose in the wash at the stern of their vessel It is important to ensure the end of the hose is fully submerged in such a way that it doesn t create turbulence and suck air NOTE BUBBLES IN WAKE WILL DAMAGE MEMBRANES D EREE OF BUBBLES WER SUBMERGED WAKER ANON 21 We recommend sliding the intake cap up the intake hose and securing it on board the vessel so that the end of the intake hose can sink sufficiently below the surface We recommend not using the detachable suction strainer when towing the intake hose Success when making water while towing the intake hose depends on the hull shape and speed of the vessel Some vessels will be unsuitable When trailing the intake hose the particle filter needs to be monitored closely for air bubbles A If the intake hose is sucking air you will damage the membranes and this will not be covered by warranty 22 Desalinating Brackish Water Brackish water is water that is less salty than seawater but more salty than fresh water Examples
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