I have an RO/DI problem

[hoseman77]

If anyone can help point me in the right direction I"d appreciate it. Well here it goes, I have been having a problem with phosphates in my RO system and so I added a DI filter and I still have the same amount of Phosphates. I checked my water from the tap and I have 1ppm of Phos. So I would think my RO water would reduce it. So when I test it with my new DI added it still reads the same. So then I went and got a new RO membrane with no change still. I am ready to just go and buy a whole new RO/DI system. What am I doing wrong?

RO system is 1 year old with a new membrane
Sediment filter is 2 mo. old
Carbon filter is 2 mo. old
DI filter is 12hrs old.
Phosphate level is 1ppm same as if it was strait from the tap. Dont know why?

 

[jimvette1]

Just throwing out suggestions.
Is it plumbed correctly?
RU sure?
Backflow valve not working?
Discharge line plugged causing back flow?

 

[sign guy]

your carbon is too old you need to replace it as soon as possible, chances are your leaching clorrene back into the water. I use matrix bran carbon its good up to 3600 gal and after that it will not leach just stop removing phosphates.

 

[t316]

I think Signguy nailed it.
Short of that, you either have backflow going on, or your meter is bad. But I find it surprising that you are only reading "1" from your tap water. You either have some really good tap water (unlikely) or your meter is off. This # should be way higher coming out of the tap.

 

[jimvette1]

Originally Posted by T316
http:///forum/post/2681076
I think Signguy nailed it.
Short of that, you either have backflow going on, or your meter is bad. But I find it surprising that you are only reading "1" from your tap water. You either have some really good tap water (unlikely) or your meter is off. This # should be way higher coming out of the tap.
I agree, my tap water is 236. If it were "1" I wouldn't even be using my RO/DI unit.
I would borrow someone's meter (or LFS) and check it again.

 

[sign guy]

Originally Posted by JimVette1
http:///forum/post/2682351
I agree, my tap water is 236. If it were "1" I wouldn't even be using my RO/DI unit.
I would borrow someone's meter (or LFS) and check it again.
I think he ment his phos is at 1 ppm