how much pure is produced is determined by the pressure and water temperature.What I mean by recover is see how much water production increases when water temp goes up.The temp of my tap water is 10c at the moment which will surely have an adverse affect on production. Normally a brand new membrane deals alot better with cold water, I see huge improvements when its changed, hence why I use to do it every year.
No no no there's only one correct way to set up your 4040 as each membrane will wanna run different to the next. Open the valve fully and start to close it off and by doing so your tds reading will lower keep going until you get to the lowest tds reading possible. You will no where the lowest is because it will go so far and the reading will start to go up again then knock it back. I'd suggest putting on a inline tds meter saves you time, money and membranes. Rob. Ratio has nothing to do with setting up so don't guess 50/50 or 60/40 it's not correct
Quote from: Avo on January 22, 2015, 11:07:04 pmNo no no there's only one correct way to set up your 4040 as each membrane will wanna run different to the next. Open the valve fully and start to close it off and by doing so your tds reading will lower keep going until you get to the lowest tds reading possible. You will no where the lowest is because it will go so far and the reading will start to go up again then knock it back. I'd suggest putting on a inline tds meter saves you time, money and membranes. Rob. Ratio has nothing to do with setting up so don't guess 50/50 or 60/40 it's not correct Avo is correct.Took some trial and error and a second membrane (after a couple of years ) when ordered from Phil at vyair, he advised me to set up this way.Also to build a bypass for the waste valve - brilliant ! basically you put a t piece before and after the waste valve with a short section of pipe/hose running between them, in the middle of that you fit a tap/ball valve. Once you have set the waste valve to its optimum for lowest tds in pure production you need never adjust it again. You simply open the valve on the bypass to flush and close it when you want to produce pure water. If you are not already doing this, you should
I put an inline tds coming off my 4040 so I could keep a close eye on things and it was the best £22 I spent on the system. Loads of people just guess there membrane rejection rates it's mental.