Overview
For customers that prefer to operate their watermaker from batteries, Rainman offers options in 12VDC, 24VDC, or 48VDC. These are manufactured in either Portable, Modular installed, or Framed formats (48VDC only for Framed option). This gives the customer maximum choice on the operation mode and output levels. Options range from 34lph (9gph) to 140lph (37gph).
In order to maximise reliability and serviceability, all our DC electric systems utilise an impeller lift pump and ceramic piston triplex plunger pump, both mounted on each end of a DC motor. It’s a great option for those wishing to avoid the complexities and maintenance requirements of energy recovery systems.
Power Options
With recent advancements in batteries, solar, and wind power, it is easier than ever to have sufficient useable power available for running your watermaker. In our DC electric line of watermakers, productivity and power increase with voltage options.
DC Electric System Options
The Rainman DC Electric systems can be shipped in different formats to meet your requirements.
Model |
Output |
Power |
|---|---|---|
| Portable - Controlled in case only, but can be converted to installed | ||
| 48VDC-140L | 100-154lph 26-41gph |
48VDC 1,250 watts |
| 24VDC-55L | 45-61lph 12-16gph |
24VDC 600 watts |
| 12VDC-34L | 26-37lph 7-10gph |
12VDC 400 watts |
| Modular - Available with basic control, manual control panel, or 48VDC only full auto control panel | ||
| 48VDC-140L | 100-154lph 26-41gph |
48VDC 1,250 watts |
| 24VDC-55L | 45-61lph 12-16gph |
24VDC 600 watts |
| 12VDC-34L | 26-37lph 7-10gph |
12VDC 400 watts |
| Framed - Available with manual control panel, or full auto control panel | ||
| 48VDC-140L | 100-154lph 26-41gph |
48VDC 1,250 watts |
Configuration Options
Rainman DC electric watermakers can be purchased in three different configurations.
Modular Installed System
For a minimum footprint installation, the Modular configuration works very well. Our systems are uniquely designed in that we have a single motor with a lift pump and high pressure pump mounted on either side of a through shaft. This simplifies operation and minimises failure points.
The Modular configuration can be used with a minimalist valve/gauge control, a manual control panel with autoflush, or if you have the 48VDC option, it is compatible with our fully automated control panel.
For 12VDC or 24VDC customers, we recommend this Modular configuration as the output is a bit lower and running such a system for longer periods of time in portable configuration may be inconvenient.
Portable System
A portable Rainman consists of two components. A pressure supply unit (PSU) and a reverse osmosis (RO) unit. The PSU lifts water, filters it and puts the clean seawater under pressure, while the RO unit extracts fresh water from the pressurised seawater stream, returning most of the water and all of the salt back to the sea.
This is a convenient option for those that wish to avoid an installation process, only keep their watermaker onboard for occasional trips, or share the system with a friend or another vessel.
Framed System
For larger vessels with higher water requirements and 48VDC available, the Framed Rainman is a good option. Not only is the installation easier, but it is compatible with either our manual control panel with autoflush or the fully automated system with wired remote micropanel and phone app.
Note that the 12VDC and 24VDC are not currently available in Framed configuration.
Control Options
Depending on which format system you purchase, there are various options for controlling your DC electric Rainman.
The Rainman DC electric systems can be purchased and installed on its own with only a simple valve/gauge assembly to control pressure. However, most customers will prefer to add either the manual or fully automated control panel options for a more convenient user interface.
Minimalist Control Assembly
The basic Modular Rainman watermakers will arrive with a simple valve/gauge assembly to control pressure. This is to be mounted in a convenient location and take up barely any space. A separate product water flow meter can be mounted vertically nearby.
Optionally, you can install the autoflush system to assist in the flushing process.
Manual Control Panel with Autoflush
The manual control option provides a convenient interface for your Rainman framed watermaker. It’s a highly presentable and functional component that will enhance your Rainman user experience.
While being manually controlled, some electronics convenience features assist in system operations.
- Autoflush function triggers flush cycle after powering the watermaker off and every seven days thereafter
- Built in tri-colour LED salinity sensor indicates when water is good to route to your tank
Fully Automated Control Panel
For a more luxury experience, the fully automated system incorporates significant convenience features while ensuring maximum reliability.
- Wired remote micropanel for full control at your nav station.
- Bluetooth connect phone app (iOS or Android)
- Timer function or set litres to be made
- Full pressure control
- Water diversion sending only good water to tank
- Manual backup in rare case of any sensor or electronics issue
Note that the 12VDC and 24VDC systems are not currently compatible with the fully automated control panel.
Optional Accessories
While the base system will be sufficient for many customers, a number of options are available to get more out of your Rainman watermaker.
- The plumbing installation kit is included with the Modular or Framed Rainman systems, but can also be a very useful option if you plan to install your Portable Rainman units.
- A hydrotester will give you indication of the total dissolved solids (TDS) so you can know how your membranes are ageing.
Spares and Consumables
Your new Rainman system will arrive with enough spares and consumables to keep you going for a while, so most customers do not need to order more with initial purchase. There are a variety of items you will need over time to keep your system running for many years.
Specifications Comparison Table
The following table compares the specifications of the different Rainman DC electric systems. It also has the option to bring other types of Rainman systems into the comparison.
Use “Select Columns” to choose systems for comparison.