[Aiden Smith]

Can anyone help me please. I have my RO4040 set up and am getting 150 after the RO . Do I put the Di vessel straight after the RO or do I put the water in the tank and then run it through the DI after the pump. I am struggling to get my head around this. Any advice will be greatly appreciated.
Thanks Aiden

[Smudger]

150 ?

I think you have a big problem right there


Darran

[John Mart]

What is it before RO? Straight out of the tap? Your RO should remove at least 95% of impurities.

[P @ F]

Me thinks that your RO is poorly !
Either that or the tap TDS is around 3000 ppm !
What is the tap TDS ?

[Aiden Smith]

Thanks for the replies guys.
Tap tds is roughly 255.
If it is poorly where do I go from hear

[P @ F]

Was it new to you or used ?

[Midge]

Buy a new ro

[Ooooooog]

Whereabouts are you?

Start with getting a good TDS meter.

[P @ F]

You should be looking at 015 from the RO if good .
Have you used one before , got any pics of the set up ?

[Aiden Smith]

I bought it second hand off eBay. Would I have to strip the RO down and rebuild it

[P @ F]

I would say you have been had over and have been sold a knackered membrane by the looks of it .
It’s not set to flush is it ?

[Aiden Smith]

Ok
Well another lesson learnt I guess. When I removed it what Am I looking for so I now what to expect. Am I right in thinking that the canister the filter sits in will be fine or should I be looking for any problems

[Stoots]

Check the ratio of pure/waste is set correctly....you could have it on flush as said above.

Sounds like membrane is knackered though, that's  best part of £200 to cheer you up 

[P @ F]

Got anybody near you that can take a look before you bin it  ?

[Smudger]

if you got it second hand did you collect it or was it posted ? if posted did the ro membrane have any wrapping around it to keep from drying out

if you've got a link to the eBay sale we might be able to help by seeing what you brought

Darran

[Aiden Smith]

Thanks to everyone with replies. I will post a photo of the set up tomorrow and go from there

[Aiden Smith]

Darren. It came assembled. Membrane in canister already

[Spruce]

If the tds meter is reading 255 (roughly?) then its probably reading the output from the r/o correctly.

As per Gomo; what it your pure to waste ratio when producing water? ( A very important question. I saw one person completely shut off the waste water tap which will damage the membrane and give you a high pure tds reading - hence the question.)

A quality Axeon membrane HF5 (water pressure between 50 and 100psi) will cost you £257.00 + VAT from GAPS water.
http://www.gapswater.co.uk/acatalog/RO_Ultratech_Membranes.html

There are some cheap membranes around but with very poor performance which, imho, aren't suitable for window cleaning applications.

You should also replace your prefilters which you should do regularily depending on your water useage.

DI vessel.

You can put it either after your r/o or after your pump but before your hose reel on the van.

We have ours after r/o so the water that goes into out storage tank is pure. Doing it this way saves space in the van and allows several vans to fill up with water without each van having to carry a di vessel.

[Aiden Smith]

Thanks for the reply Spruce
I will have another play around this afternoon and go from there

[NWH]

Are you using pre filters if you were I would say you’re RO was knackered.