[Bonzer]

I am about to purchase the various parts for an RO system. I want to get a 40" Champ RO with 2 pre-filters. I'm also going to have a softener vessel and DI vessel. Is there a website with a diagram that shows where all the pipes go, e.g. how to connect the valve to determine how much goes to waste and how the flushing circuit is plumbed?

[JM123]

Give Art at Surecleansystems a bell www.surecleansystems.com

[Roy Harding]

Its all quite simple to connect up.

Water softner then the sediment fillter then carbon fillter then to the 4" R/o.

If you ar using a 4 x 40 Ro it has 2 outlets each end blank the middle at the one end. Then take the pipe from the fillters to the outside of the end you blanked off. The other end of  the R/O connect a pipe to the center hole in  the R/o this is the pure water out.

Next take a pipe from the outside outlet this is the waste and you put a flow contol valve to restrict the flow of the waste. Restrict the flow so you get the same amount of waste as pure water.

I store mine in the tank then use a D/I colum at the last minute before it comes to the brush.

Roy

[Bonzer]

Thanks Roy. Is the 50/50 waste/pure a guidline or are you supposed to adjust the flow until the TDS is below a certain figure?

Also, please could you explain how to do the flush pipework. My mate has a clear cannister that he has to fill with salt and flush through after each 1000L of water. How does that all work?

[Roy Harding]

No it has nothing to do with the tds.

You restrict the waste to build more preasure in the r/o, It was recomended to me to set it up 50 x 50, if you set it up so you get 40% waste and 60% pure the r/o membrane will not flush as  well and sludge up.

I have a tds reading of 234tds at the tap and that comes down  to 0.01 after the r/o, then the water is stored in the holding tank, and it is not polished with resin untill the last minute.

How I flush mine is very simple, I have a tap on the pure water out pipe from the r/o. you close this tap and open the flow control on the waste and hence the water flushes across the membraine at mains presure and down  the waste.

A tip is mark the position of the flow control on the waste then when you have flushed the r/o, return the flow control on the wast to the same position as before and open the tap on the pure water side.

Roy

[Bonzer]

So why does my mate have to flush salt? Is it to do with the softener bottle he's got?

[Roy Harding]

Yes he is regenerating the resin.

I dont bother as a bag of resin will last a year and costs £70.

Roy