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A new membrane works great but as it gets older it loses its effectiveness and consequently I use DI very fast to maintain 0 tds, I am not sure what your reference to CO2 is all about so I cannot speak to that. I am going to try a different restrictor and see if I can force more water thru the membrane. The interesting thing is these systems are mostly bullet proof if you just use a quality membrane and the proper pre-filters.Sorry, didn't have time to study every post in this thread carefully, but have you verified that a brand new RO membrane gets an appropriate rejection rate on the TDS and that the explanation for rapid DI depletion is not just CO2 getting through? I didn't see that sort of discussion after someone initially asked about new membrane function.
A new membrane works great but as it gets older it loses its effectiveness and consequently I use DI very fast to maintain 0 tds, I am not sure what your reference to CO2 is all about so I cannot speak to that. I am going to try a different restrictor and see if I can force more water thru the membrane. The interesting thing is these systems are mostly bullet proof if you just use a quality membrane and the proper pre-filters.
A new membrane works great but as it gets older it loses its effectiveness and consequently I use DI very fast to maintain 0 tds, I am not sure what your reference to CO2 is all about so I cannot speak to that. I am going to try a different restrictor and see if I can force more water thru the membrane. The interesting thing is these systems are mostly bullet proof if you just use a quality membrane and the proper pre-filters.
A new membrane works great but as it gets older it loses its effectiveness and consequently I use DI very fast to maintain 0 tds, I am not sure what your reference to CO2 is all about so I cannot speak to that. I am going to try a different restrictor and see if I can force more water thru the membrane. The interesting thing is these systems are mostly bullet proof if you just use a quality membrane and the proper pre-filters.
Makes sense. I don't have well waterThe CO2 reference is what we were referring to when we asked about city or well water. Pre filters do not remove CO2 from the water and it destroys membranes faster than chlorine does. Having CO2 in your water from the city is pretty rare but very common in well water. Using a different flow restrictor will actually force less water through the membrane and not more. Having a 1:4 product to waste ratio helps keep build up from forming on the outside of the membrane and prematurely clogging it.
That is the plan but I am afraid that this membrane may already be shot.You said the your current ratio was 2:1 I would try to force less water thru the membrane and get to a 4:1 ratio
Makes sense. I don't have well water
That is the plan but I am afraid that this membrane may already be shot.
Can you take a picture of your system, right now as it Is? And particular the RO housing? I had asked earlier but you might have missed it
I will double check the seating but I am certain that it is in all of the way. I have a new restrictor ordered but I suppose nothing will change if the membrane is ruined.That and a 1:2 product to waste ratio seem to be your only issues, realistically if your membrane works excellent at the beginning then deteriorates over time it's more than likely the low waste flow that's your issue. But ensuring the membrane is properly seated is important as well.
Using a 5 micron carbon block isn't ideal, but it certainly would not toast membranes in 7 months.
Chlorine/chloramine would be the only thing that destroys a membrane, correct? Assuming you're not running scolding hot water through it, lol.
My thought was maybe the carbon was exhausted.
Is there a slight gap between the bottom of the casing cap and the actual body? If so, to me, this points directly to an improperly seated membrane. When inserted all the way the cap should screw ALLL the way to the bottom of the threads. You would be surprised as to how much force you need to push the membrane all the way in to it's seat.
Hi Russ,Please call in.
Russ
513-312-2343