Ecosoft BW MO6500 4″ reverse osmosis system for brackish water is a reliable and compact solution for treating water with a TDS of up to 10 000 ppm. Designed for demanding applications, it is built using corrosion-resistant AISI 316 stainless steel for all components in contact with feed water. The fully welded-free piping enhances resistance to high chloride content, allowing stable operation at pressures of up to 25 bar.

The system is equipped with the Ecosoft OC6000 controller, which offers online access and real-time monitoring of system performance, including flow rates, purified water quality, and operational status. Its compact design and compatibility with a standard 230 V power supply make installation and integration easy, even in space-constrained environments.

MO6500BI6 is an optimal choice for coastal installations such as private houses, cottages, and hotels. It is also suitable for small-scale industrial applications in the production of cosmetics, car care products, household chemicals, distillates, and laboratory water.

• Grundfos® CRN 1-30 high-pressure pump
• Flow capacity: 250 L/h
• Designed for brackish water treatment
• AISI 304 stainless steel frame
• AISI 316 stainless steel piping without welding
• Ecosoft OC6000 controller with online access

Service and maintenance

If you decide to carry out the replacement yourself, follow the instructions below.

⚠️ Use sterile rubber gloves when handling membrane elements

⚠️ If high microbiological purity is required, disinfect the reverse osmosis system and the permeate tank before installing the membrane

Membrane holder cap
1 – Screws, 2 – Locking half-rings, 3 – End cap, 4 – Sealing ring, 5 – Sealing ring for the end cap.

Remove the membrane element(s) from the factory packaging. To replace the old element with a new one, disconnect the pipelines and remove the membrane holder(s) from the frame.

⚠️ Pay special attention to the sealing ring of the end cap (5). If the seal is missing, permeate and concentrate streams may mix.

After removing the end cap, install the membrane element in the direction of the arrow marked on the membrane holder (from the inlet water side). The membrane element must be inserted into the holder with its sealing ring aligned with the inlet connection of the holder head.

After installation, secure the holder head with screws and locking elements to the holder body, then reconnect the pipelines for feed water, concentrate discharge, and permeate outlet on the membrane holder. Fix the membrane holder to the reverse osmosis system frame.

During the first system startup, the initial portion of permeate must be discharged to the sewer, with a minimum discharge time of 15 minutes.

💡 When installing the membrane, pay attention to the direction of the arrow on the membrane holder.

💡 If necessary, use glycerin as a lubricant.