[Topclean]

need some advice please lads,  bought my  ro 4040 about 6 months ago, when i first used it i was getting a reading of between 12-18.   The best i can get now is 76    I have got a clarke booster pump but this is still to high i am using so much resin its not good.  I now there was a thread not that long ago with simalar thing but cant find it.

Can anyone post the link for me or have any ideas?

[Lee GLS]

it might be the seals need checking that waste water isnt leaking back in, have you flushed the ro as well.

[AJ]

I'd change the pre filters. Depening on how much water you produce, 3 months is long enough for these. Pay special attention to the carbon filter as chlorine will ruin the membrane.

[Topclean]

lee i have flushed for a while,  what seals do you mean, is it the big round ones on either end of the ro?

Aj i have replaced the pre filters a little while ago, this made no difference to tds.  this is the second time this has happened.  surely these membrane must last longer than 6 months.

Could it be the housing itself?   doin my head in.

[AJ]

When you changed the filters, it is possible to not seat the o ring properly. This will allow chlorine to pass through. Take it all apart and refit all the seals. A little silicone on them should help the seal. Also, don't over tighten.

[Topclean]

Thanks aj i'l give that a whirl.

[Topclean]

that reduced it by 2, tds 74. This really is doin my head in.

Any more sugestions lads.

[rg1]

that reduced it by 2, tds 74. This really is doin my head in.

Any more sugestions lads.

Go back to the supplier?