Autarx Carawater MaxFlow - Water Filter for RV

The AUTARX Maxflow system by Carawater operates like a compact, multi-stage water treatment plant and is ideal for motorhomes and campers. Through the coordinated sequence of five filter stages, incoming water – e.g., from the grey water tank – is progressively treated to an ever finer degree. Filtration is electrically supported via a 12V pressure pump and separates the water into purified water and wastewater.

Multi-stage treatment from coarse to ultra-fine

1. External 5" Sediment Filter

In the first stage, coarse contaminants such as sand, rust, and suspended solids are mechanically retained. The transparent filter housing allows for visual inspection of the contamination level and facilitates cleaning or replacement.

2. Activated Carbon Block (Pre-filtration)

The second stage involves chemical pre-filtration. Reductions include:

• approx. 99% free chlorine
• chlorine-based solvents
• aromatic hydrocarbons
• approx. 85% chlorine-based pesticides
• phenols, benzene, and other organic compounds > 5 µm

This stage significantly improves odor and taste and reduces chemical contamination.

3. Low-Pressure Membrane (0.0001 µm)

The core of the system is the high-performance membrane with a pore size of 0.0001 µm. It separates the water into purified water and wastewater – similar to stationary membrane systems. Dissolved substances larger than a water molecule are retained and discharged into the wastewater.

4. Activated Carbon Block (Post-filter)

Before returning to the fresh water tank, the purified water is passed through an activated carbon block again.

5. Hollow Fiber Membrane & UV-C LED (Germ Barrier)

For microbiological safety, a combination of hollow fiber membrane and UV-C LED is used. The double germ barrier further reduces bacteria and germs and increases hygienic safety.

System Monitoring & Flushing Technology

An integrated flowmeter measures the amount of water produced and indicates when flushing or filter changes are necessary.

For system maintenance, AUTARX Maxflow features:

• an external flushing inlet with Gardena-compatible connection
• a membrane flushing function
• optionally an automatic flushing unit

The optional automatic flushing unit detects fill levels and flushes the system with fresh water from the fresh water tank before and after production according to a timed schedule. Filter changes are recommended after 8,000–10,000 liters, depending on the model.

Result: Self-Sufficient Water Cycle

The combination of all filter stages creates a technical cycle that can significantly extend the period of self-sufficiency. The system reduces dependence on external fresh water supplies and allows for longer stays in remote locations.

• Self-sufficient water treatment plant for on the go and your motorhome
• Extends self-sufficiency periods through a closed water cycle
• 5 perfectly matched filter stages
• Membrane filtration with 0.0001 µm
• UV-C LED for additional germ reduction
• Hollow fiber membrane as microbiological safeguard
• Integrated flow meter with maintenance indicator
• Gardena-compatible flushing connection
• Optional automatic flushing

• AUTARX Osmosis Box
• Sediment filter FILTRADOC – PRE Speed UNO 5"
• Automatic pressure pump
• Flow meter
• Timer
• Connection material

The AUTARX MaxFlow (M) reverse osmosis system treats water at a rate of up to 30 liters per hour. It reduces coarse and fine particles, organic loads, and microbiological contaminants, and returns the filtered water to the fresh water system.

Depending on water quality, the following are reduced, among others:

• Sediments, sand, rust
• Chlorine and chlorine-based compounds
• Aromatic hydrocarbons
• Phenols & Benzene
• Organic substances > 5 µm
• Dissolved solids above the membrane pore size
• Bacteria & germs (by hollow fiber + UV-C)

The system is not designed as a classic water softening system. However, membrane filtration reduces dissolved solids above the pore size, which means that mineral components can also be partially retained.

The AUTARX MaxFlow is installed in the vehicle between the greywater tank and the freshwater tank. The system draws water from the greywater tank, treats it through several filter stages, and then returns the filtered water to the freshwater tank.

For installation, lines to the greywater tank (suction and return), a connection to the freshwater tank, and a 12V power supply are required. This creates a closed water circuit, which allows for longer self-sufficient standing times.

Basically, you can install your AUTARX Maxflow system yourself. However, we recommend professional installation by our installation service. This way you ensure that everything is optimally connected – and you also receive a guarantee on the installation.

You can easily arrange your installation appointment by phone:
📞 🇩🇪: +49 (0)8093 606 9870
📞 🇨🇭: +41 415 623 260

The filter change for the AUTARX MaxFlow is model-dependent and is scheduled after approximately 8,000 to 10,000 liters of treated water. The integrated flow meter monitors the amount of water produced and indicates in good time when flushing or a filter change is necessary.

Specific costs for filter changes depend on the respective filter set and model and are specified separately by the manufacturer. This allows for targeted planning of filter replacement as needed.

1. Prepare greywater tank

Two openings are needed in the greywater tank:

• A 20 mm bore for water intake, into which the intake nozzle is inserted.
• A second 20 mm bore for the returning wastewater from the filter system.

2. Connect suction line

The suction line from the greywater tank is first connected to the 10" sediment pre-filter, which retains coarse impurities.

3. Connection to pump and filter unit

From the sediment filter, the line continues to the pressure pump and then to the AUTARX box, where further water treatment takes place.

4. Return of wastewater

One of the hose connections from the AUTARX box is led back into the greywater tank. The wastewater generated during filtration is discharged via this line.

5. Connect clean water line

The second hose connection leads via a flow meter, which records the amount of water produced and acoustically indicates necessary backwashes.

6. Connection to the freshwater tank

After the flow meter, the filtered water is fed into the freshwater tank. A 20 mm bore is also required here for routing the line.

7. Establish power supply

The system is operated via a 12V / 8A power supply. Activation is done via a manual switch.

Installation video: Link

Would you prefer to leave the filter change to a professional? Our maintenance and installation service will gladly take care of this task for you.

You can easily arrange your filter change appointment by phone:
📞 🇩🇪: +49 (0)8093 606 9870
📞 🇨🇭: +41 415 623 260