Rainman Portable Watermaker
Why Portable?
The origins of Rainman established our reputation as the “Portable Watermaker” in the blue case. Although many customers will prefer to install their Rainman, many benefits exist for keeping your system portable.
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You don’t need to install the system. Ten minutes after receiving the system, you can be making fresh drinking water.
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If you are a cruiser and a racer, you can easily offload about 2/3 of a crew member in weight by putting the watermaker ashore.
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No extra holes in your hull.
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If you are space constrained, you can remove the system for more people and gear on shorter trips.
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If maintenance is required, you bring the system to a technician rather than a technician to your boat.
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When you upgrade your boat, the system goes with you. Installing a system in your boat will not add much value to your boat.
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You can loan it to a friend.
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Reduced initial cost due to no expensive installation process.
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You can fill up your neighbour’s tanks with our product water extension hose.
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Moving the system around is easy if you have an RV, live near water, or have another boat.
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You can easily resell the system if you are no longer getting use out.
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Minimise risk to your vessel during storm season by leaving your Rainman ashore.
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System Types Available
You have maximum flexibility in power sources if you wish to keep your system portable. Any of our three platforms can be used as portable. In order of popularity, these include:
The primary design principle in the AC Rainman is that it must start and run using a Honda 2kVA portable generator. The ubiquity of this generator has helped make it the most popular system in our range. It can also run on a good quality 2kVA inverter. Higher capacity generators and inverters are commonly used as well.
An update of the original Rainman, this system can run without any external electricity source. Just add fuel and salt water. We designed this with a Honda GXH50 motor and a simple belt drive system.
This system was designed with lower power and lower flow rates. Simplicity and low maintenance is retained by utilizing a simple triplex plunger pump. Due to the lower productivity and requirement for a shorter power cord, this system is more commonly installed than kept portable.
Two Components – One Watermaker
The system is made up of a pressure supply unit (PSU) and a reverse osmosis unit (RO). Both parts are required to make a complete watermaker. The PSU lifts the seawater, filters out the sediment and puts the system under high pressure, while the RO unit extracts fresh water from the stream of pressurised seawater. Most of the water goes out to waste as brine output, while about 20% of the volume is extracted as fresh potable water for your tanks. Different RO options exist for you to select with your AC Rainman system, each to achieve their own specific objective.
Maintenance Requirements
While there is limited maintenance on your Rainman watermaker, there are a few things that should be looked after to ensure a long life of your system.
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When storing system:
Fresh water flush and pickle the system when storing it for more than a couple days. This may sound complex, but it is an easy five minute process with no specialist knowledge required.
5 - 50+ hours of use:
Change the non-proprietary prefilter after 5-50+ hours of us, depending on cleanliness of the source water.
Specifications Comparison Table
Video Demonstration
Brief demonstration to show routine operation of the portable Rainman system.
Spare Parts & Consumables
Consumable Part
PLEATED PAPER 5 MICRON PRE-FILTER CARTRIDGE. The life of your pre-filter cartridge will depend largely on the source water being used. Drawing water out of the open ocean may allow your pre-filter cartridge last for several months, while drawing from polluted bays may foul your cartridge within hours of use. The cartridge is a 10" x 2.5" 5 micron pleated paper filter. These inexpensive cartridges are widely used and available throughout the world from water filtration retailers and hardware stores. Please note it is very important to use a 5 micron filter with this system to protect the RO membranes and the high pressure pump.
