Ecosoft Professional MO6500 4″ reverse osmosis system (250L/h)

To ensure maximum efficiency of the Ecosoft reverse osmosis system, regular replacement of filter elements is required. Proper maintenance guarantees high water quality and extends the service life of your system.

Cartridge replacement schedule:

• Ecosoft PP melt-blown sediment filter, 4.5″ × 20″, 5 µm – replace every 4 months, or if the pressure drop reaches 0.5 bar
• Membrane element – replace or clean every 6 months if productivity decreases by more than 15–20%, water quality worsens by 15–20%, or pressure drop increases by 15–20%

You can replace cartridges and membrane elements yourself, but for best results we recommend contacting an authorized service center.

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.

Downloads

• Manual for Ecosoft Commercial Reverse Osmosis Systems
• Professional MO6500TP5 RO technical data sheet
• omparison of Ecosoft Commercial Reverse Osmosis Systems
• Conformity certificate

Frequently Asked Questions

• What applications is the MO6500TP5 suitable for?

  The MO6500TP5 is suitable for a wide range of commercial and residential applications thanks to its ability to produce up to 6 500 Litres of purified water per day with high efficiency.

  Our 20-year collaboration with water professionals worldwide has led to the development of standardized, easy-to-use, and customizable reverse osmosis units.

• What are the advantages of the Professional line?

  The Professional line offers several advantages:

  • components from leading global manufacturers ensure reliability
  • modular design enables easy connection of a dosing station and options such as permeate flushing or raw water blending for different water qualities
  • technical support from Ecosoft experts and a 12-month warranty

• How can I calculate the capacity of the MO6500TP5 for my setup?

  You can estimate the system performance using the graph provided in the Ecosoft Professional MO6500TP5 RO technical data sheet in the Downloads section above.

  To calculate the permeate flow rate at 25 °C and feed water TDS of 1 500 mg/L, refer to the chart below:

  
  Ecosoft MO6500TP5 flow rate chart

  • On the FEED WATER TDS axis, mark the point corresponding to 1 500 mg/L (1).
  • Draw a line to intersect the curve for 25 °C (2).
  • From the point of intersection, draw a line toward the PERMEATE FLOW RATE axis (3).

  The result is approximately 250 L/h.

  To get the most accurate estimate, a complete feed water analysis is required.

  If you already have this analysis and know the water temperature, feel free to send us the data. We will calculate the performance using specialized software such as Wave from DuPont or QPlus from LG. Contact us at info@aquiferpure.co.uk — we look forward to your requests.

• What water quality can I expect after filtration?

  To determine the quality of water after the system, you can use software to calculate the operating parameters and expected purity.

  Projection tools like Wave from DuPont and QPlus from LG allow for detailed modelling. 

  If you would like support with this, send your feed water parameters to info@aquiferpure.co.uk — we’ll be happy to help.

• Can I increase the system’s capacity and productivity in the future?

  Yes, you can increase the system’s capacity over time.

  You can add an additional pressure vessel with a 4″ RO membrane to increase the flow rate in the MO6500TP5. This does not require a pump upgrade and involves only minimal piping modifications.

  When increasing productivity, you should adjust the following:

  • optimize the pre-treatment setup
  • add an antiscalant or softener if necessary

• Which membrane elements are the best for the MO6500TP5?

  If you choose a professional line of commercial reverse osmosis systems, it makes sense to get the most out of it.

  For complex water and extended service life FilmTec LCLE PRO-4040 4" Membrane element is recommended. NB. that the Membrane Element is not included and needs to be purchased separately.

   

  What kind of pre-treatment is required before the system?

  If you use tap water as a feed source, it must be pre-filtered from fine particles and chlorine before entering the RO system. Well water may contain hardness, iron, manganese, silica, or hydrogen sulfide — all of which can quickly damage the membrane. Some of these issues can be addressed by using an antiscalant.

  We recommend performing a detailed laboratory analysis of your well water. For tailored advice, feel free to contact us at info@aquiferpure.co.uk.

• What is the best way to remove hardness before reverse osmosis?

  Removing hardness salts before the reverse osmosis system is the most effective solution. This can be done by using a softener.

  If your feed water is more complex and contains not only hardness but also iron, manganese, or TOC, we recommend using Ecomix® filtration media.

  Antiscalants can also be used effectively in industrial systems with a capacity of more than 2.0 m³/h.

• Which type of tank is better to install after the system?

  An open tank is the most common solution, especially if the required water flow exceeds the system capacity by three times or more. It is commonly used in private houses and car washes.

  A pressure tank is suitable when the required water flow is short-term and does not exceed twice the system’s hourly capacity. It is typically used in restaurants and cafés.

• What tank volume is recommended after the system?

  For an open tank, the volume should be at least equal to the hourly capacity of the system. For example, with the MO6500TP5, the minimum recommended tank size is 250–300 L. The maximum hourly water demand should also be considered.

  A pressure tank is usually selected based on actual needs, with a minimum volume of around 80 L. Keep in mind that such tanks typically store only half of their total declared volume.

  Only pressure tanks specifically designed for reverse osmosis water should be used. These tanks are usually constructed to prevent direct contact between the water and any metal parts.

• Can I connect multiple tanks after the system?

  Yes, it is possible to connect two or more tanks to a single system.

  If you have such a need, contact us at info@aquiferpure.co.uk, and we will recommend the best solution.

• What are the advantages of the Grundfos pump in this system?

  The Grundfos pump used in this model offers several advantages:

  • low energy consumption (0.67 kW)
  • low noise level (55 dB)
  • built-in dry-run protection
  • high operating pressure (up to 16 bar)
  • global manufacturer’s warranty from Grundfos