[Simon Trapani]

To decrease the waste & increase the pure turn the gate valve clockwise. To increase waste & reduce pure turn the gate valve anti clockwise.
It’s the same on any 4040.

You need to experiment with a tds meter & find your ’sweet spot’. You should have enough waste flowing over your membrane that you will rarely need to flush if at all. Too little waste & your membrane won’t last long. It’s not as complicated as people make it.

[CleanClear]

RO gets mine down to about 1/2 then through DI.....no need for DI for me really but it's built into system so might as well use it....can't remember last time I changed resin but only done it once since new and it was new in 08/2022.
Bet it's 18 months ago and still getting 0 TDS and 1/2 out of RO before DI.
Any ideas how you increase or decrease waste output on these anybody?

I'm a little bit suprised that you have a HF4 membrane and presumably had it a while and you don't know how to adjust your waste. Its obviously more luck than judgement that you have a functioning system.

ANY RO has a water input (presumably your tap or a booster pump), then it has TWO outputs............
[1] Waste and [2] Product water (or if you prefer 'pure water').

The 'waste' water that comes from your RO 'should' have a tap to it, so you can speed it up or slow it down.

A very rough way to look at this is this :  if you run an RO with a high percentage of water going to waste it should generally result in the pure water you make being very 'pure' .  If you run it with not so much water going to waste (thereby making the RO membranes work harder) it may result in the water you make being not quite as pure as you want it.

By tampering with the ratios of waste water and taking samples you will find a 'sweet spot ' that work for you, the end result being the purest water you can get, wether thats 0 TDS or 15 TDS. Your start TDS will ultimately dictate what you can achieve.

Has your waste actually got a tap on it ? It might be helpful to see a photograph of it. I can't actually fathom out how you are asking this question to be honest.

[JandS]

I run it with the waste fully clockwise as per the instructions.....fully anti clockwise to flush, again as per the instructions......so not really luck or good judgement just following the instruction booklet....it doesn't mention increasing/decreasing waste just fully closed for optimum pure production and fully open to flush.

[CleanClear]

Thanks for that Colin. The one I'm getting is exactly the same as yours but not van mounted( it's mounted on a frame instead) from Pure Freedom. No room in my van for a van mounted RO.👍

When you come to look for an IBC and a transfer pump i'll be the first to remind you . (and you will) .   

[CleanClear]

I run it with the waste fully clockwise as per the instructions.....fully anti clockwise to flush, again as per the instructions......so not really luck or good judgement just following the instruction booklet....it doesn't mention increasing/decreasing waste just fully closed for optimum pure production and fully open to flush.

Ok mate well you've answered your own question. When you said :



The answer is you don't need to do any of that. Just follow your instructions. Why do you want to mess about increrasing or decreasing stuff ?

[JandS]

I asked because someone mentioned doing it and I was curious....don't ask don't learn.

[Simon Trapani]

It can’t be fully closed. I think pure freedom drill a whole in the gate valve to make it idiot proof & supposedly the correct ratio.

[JandS]

Okay it's fully clockwise.

[dazmond]

Thanks for that Colin. The one I'm getting is exactly the same as yours but not van mounted( it's mounted on a frame instead) from Pure Freedom. No room in my van for a van mounted RO.👍

When you come to look for an IBC and a transfer pump i'll be the first to remind you . (and you will) .   

Why? I don't want an IBC tank in the garage. It's used as a workshop for my missus business so I won't be converting it into a pure water factory!🤣👍

[NBwcs]

£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

Sounds an horrendously expensive way of producing water. I get that your Mrs doesn't want you in the garage but isn't there a shed in the garden you could utilise?  An ibc = about £100,ro about £350, transfer pump and hose = not a lot. My water starts off at late 300's sometimes in the 400's,my ro alone brings it down to 5. 1 bag of resin lasts me well over a year, about  £35 a year on filters a year, membranes last for ages...

[deeege]

Thanks for that Colin. The one I'm getting is exactly the same as yours but not van mounted( it's mounted on a frame instead) from Pure Freedom. No room in my van for a van mounted RO.👍

When you come to look for an IBC and a transfer pump i'll be the first to remind you . (and you will) .   

Can’t see any reason why Daz would need an lbc. He’s planning to produce his water exactly the same way as me, and uses a similar amount of water to me. This system is perfect for that. I’d never consider needing an lbc either.

[dd]

How do you stop your tank from over flowing, do you fit a float valve?

[dazmond]

£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

Sounds an horrendously expensive way of producing water. I get that your Mrs doesn't want you in the garage but isn't there a shed in the garden you could utilise?  An ibc = about £100,ro about £350, transfer pump and hose = not a lot. My water starts off at late 300's sometimes in the 400's,my ro alone brings it down to 5. 1 bag of resin lasts me well over a year, about  £35 a year on filters a year, membranes last for ages...

It's not cheap I grant you that but it's the best,portable,commercial RO on the market to produce pure water fast without having to drip feed a large tank in the garage and without the need for a booster pump.(HF5)

[dazmond]

£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

Sounds an horrendously expensive way of producing water. I get that your Mrs doesn't want you in the garage but isn't there a shed in the garden you could utilise?  An ibc = about £100,ro about £350, transfer pump and hose = not a lot. My water starts off at late 300's sometimes in the 400's,my ro alone brings it down to 5. 1 bag of resin lasts me well over a year, about  £35 a year on filters a year, membranes last for ages...

There's a very large shed/summer house in the garden with plasterboard,insulation,heating and lighting but it's a cocktail bar on one side and a lampshade making workshop/sewing room on the other!🤣👍

The other small shed at the side of the house is mine. It's got all my garden tools,poles,spare reel,etc,etc.

My missus is already looking at small sheds to house my RO in. It'll be made of plastic or metal and she'll insulate it too.....she's good like that.🙂👍

We also have a garage but it's full of power tools,workbench,curtain tracks,chairs ready to be upholstered and others things for missus business so totally impractical for an IBC tank.

[JandS]

Fill as you need like me.......I have a float valve but it's only kicked in once..........I rarely need the full 500 litres so just stopwatch alarm it....3 hours and I know that with the bit left over from the previous day there will be over 400 litres.......keep 100 litres in drums in garage in case I think I will run over but rarely take them with me...rarely more than about 4 miles from home anyway.