Hey Guys, looking for some help with my RODI system.
I have a 5 stage RODI system. I have had this system for about 3 years. I just did a plug and play initially when I installed it.
Now, I’ve start playing around with it because my DI gets used up fast.
1st stage - 5 Micron sediment
2nd stage - 5 Micron granular Activated Carbon
3rd stage - 1 Micron Coconut Carbon block
4th stage - RO Membrane
5th stage - DI resin
This system comes with an auto shut off valve. The TDS of the tap water is 180ppm and the TDS coming out of DI is 0ppm. I have an inline TDS meter with dual sensors connected to the system. First sensor is after the RO membrane and the second after the DI resin.
So here’s my issue and I don’t know if this is normal. When I take water or use the water from the storage tank, the system starts making RO water. But whenever this happens, the TDS coming out of the membrane jumps 5ppm to 100ppm initially. This goes down back to 5ppm after a while and the TDS after the DI remains at 0ppm. I initially thought its a membrane issue so I have changed the actual membrane but even with the new membrane, this still happens. I think this is why my DI resin gets used up fast.
Does anyone know why the TDS coming after the membrane would jump from 5ppm to 100 ppm initially them drop back down to 5ppm? Would it be the membrane orings are letting prefiltered water through the output of the membrane?
Thanks in advance!
I have a 5 stage RODI system. I have had this system for about 3 years. I just did a plug and play initially when I installed it.
Now, I’ve start playing around with it because my DI gets used up fast.
1st stage - 5 Micron sediment
2nd stage - 5 Micron granular Activated Carbon
3rd stage - 1 Micron Coconut Carbon block
4th stage - RO Membrane
5th stage - DI resin
This system comes with an auto shut off valve. The TDS of the tap water is 180ppm and the TDS coming out of DI is 0ppm. I have an inline TDS meter with dual sensors connected to the system. First sensor is after the RO membrane and the second after the DI resin.
So here’s my issue and I don’t know if this is normal. When I take water or use the water from the storage tank, the system starts making RO water. But whenever this happens, the TDS coming out of the membrane jumps 5ppm to 100ppm initially. This goes down back to 5ppm after a while and the TDS after the DI remains at 0ppm. I initially thought its a membrane issue so I have changed the actual membrane but even with the new membrane, this still happens. I think this is why my DI resin gets used up fast.
Does anyone know why the TDS coming after the membrane would jump from 5ppm to 100 ppm initially them drop back down to 5ppm? Would it be the membrane orings are letting prefiltered water through the output of the membrane?
Thanks in advance!