For a newly installed system, you have to check the following
- Make sure that you insert/load the membrane inside the membrane housing.
- Make sure that you installed the system water inlet from the cold line, hot water damage the filters, membrane, and rest parts.
- Make sure that you keep the system working for 2 hours to flush all the filters ( read the steps in the user manual).
- Normally if you did all the above correctly, the RO system required at least 3 to 7 days to get the ideal 95% to 98% rejection.
For the rest used systems; you have to check the following
- How old are your system filters and the membrane? if the membrane is older than 2 years you much to change it. pre-filters should be changed every 6 months.
- For a system of more than 3 years, if the PPM rejection failed, you have to change the Auto shut-off valve, check valve, and the flow restrictor.
- Make sure that you keep the system working for 2 hours to flush all the pre-filters and the membrane as well.
- Normally if you did all the above correctly, the RO system required at least 3 to 7 days to get the ideal 95% to 98% rejection.
Some General Reasons of High PPM
Worn-out RO Membrane:
RO membranes are at the heart of the system and are responsible for removing dissolved impurities. Over time, the membrane may deteriorate, leading to a decline in its performance, resulting in higher PPM levels. Solution: Inspect and replace the RO membrane as per the manufacturer's guidelines or if you notice a significant drop in water production or TDS rejection rate.
Inadequate System Maintenance:
Neglecting regular maintenance can lead to a build-up of scale, deposits, or fouling on the RO membrane surface. This accumulation hinders the membrane's ability to effectively filter water, leading to elevated TDS levels. Solution: Stick to a regular maintenance schedule that includes flushing the system, cleaning components, and sanitizing the system to prevent scaling and fouling.
High Feed Water TDS:
The quality of the feed water supplied to the RO system significantly impacts the TDS levels in the output water. If the input water has an exceptionally high TDS level, the RO system may struggle to lower it sufficiently. Solution: Consider testing the feed water quality and, if necessary, using additional pre-treatment methods like water softeners or deionization to reduce TDS before it reaches the RO system.
Incorrect RO System Sizing:
Using an undersized RO system for your water demands can lead to higher TDS levels. An insufficiently sized system might not have the capacity to effectively remove all dissolved solids. Solution: Evaluate your water needs and ensure you choose an RO system that matches or exceeds those requirements.