[WES]

320 out of tap, running through pure freedom 300gpd with 10inch di vessel. Can't get it at zero anymore even with new resin.
Out of RO is 52 then through DI coming out around 5. Help please.

[steven ainger]

How old is the ro

[WES]

two years.

[TomCrowther]

5 is fine in normal circumstances.

[steven ainger]

Have you changed the pre filters lately,
Also whats the water pressure.
What readings were you getting when it was new

[WES]

Yep pre filters changed. Not sure on pressure but if I turn the tap so its really low pressure the tds reading goes down slightly.

[WES]

not sure when it was new but tds was zero

[Dave Garrett]

try backflush for at least 60 mins water pressure on max

[Steve Sed]

I had to change membranes at 2 years, but I have the 200gpd.

[WES]

Cheers i'll give it a try. Not sure if I should change membrane

[richardlingard]

id look towards the di vessel because resin should make water of any tds 0

[Mist A Bit]

i had the same problem, i was using the little 750ml vessel and it stopped working. it was the seal on top of the cartridge inside. If you using that i`d quickly think about getting a bigger vessle say 11ltr

[steven ainger]

I agree, a larger di would be more user friendly, but its not the problem.
If youve got a tds of 52 coming out if the ro, it means the ro is the problem.
I would buy new good quality membranes, and replace

[Afterglow Window Cleaners]

I recently was in a similar situation, water was coming from my RO at 49ppm and then using a lot of resin from my small 1 Litre vessel going down to 2-3ppm

I changed the prefilters and the membrane, now my water comes through the RO at 8ppm and the DI gets it down to 0 and uses a lot less resin.

[WES]

Thanks lads,
Just ordered new everything from pure freedom, hope it does the trick.

[weetot]

Sorry to add this a little bit late, but it sounds like the RO Membranes may need changing, IMO