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The membrane needs a really good flush longer than 20minutes if it’s brand new. It is wise to disconnect the DI before flushing, just wait before you begin, to get some better info. @spruce or @doug atkinson are your men for a good answer. It’s worth the wait they will help you. This bit is so important. You want the best out of your membrane.Evening All, just connected new 4040 system. Now I need to open valve fully and flush for 20 minutes. Do I disconect DI vessel when flushing or flush whole system?
Ok that’s interesting. I was told to by pure freedom, but if it’s worked ok for you, you have more experience than me. ?I have never disconnected the DI vessel in 9 years of flushing membranes. Only a tiny trickle of water will go through the DI during flushing
My system is a van mounted system supplied by PF, my second one. They never told me to do anything but open the waste valve. Might be different for wall mounted, but I can't see why.Ok that’s interesting. I was told to by pure freedom, but if it’s worked ok for you, you have more experience than me. ?
I don’t know confusing. I’m not at the new membrane stage as yet I’m hoping for a couple more years out of it yet. Who knows though???My system is a van mounted system supplied by PF, my second one. They never told me to do anything but open the waste valve. Might be different for wall mounted, but I can't see why.
Same as @Part Timer I also have a Pure Freedom system and I was never told to disconnect my DI when flushing. I never have in 2.5 years of having it.Ok that’s interesting. I was told to by pure freedom, but if it’s worked ok for you, you have more experience than me. ?
When flushing no water is going through the resin it’s all waist or at least 99:9% of it will be going to waist , so it won’t be affecting the resin lifeThanks, I dont think its an issue just dont want to filter through DI and use resins whilst testing.
With a new membrane and filters I would hope, once bedded in, to get it out at less then 10ppm. 98% of 350 is 7ppm, 96% is 14ppmThanks Guys. What are my next steps?
Should I flush again for 10 minutes, then close waste valve slightly, run 5 minutes and check TDS? Or, adjust to 60waste / 40pure and run 5-10min then check tds? What's the easiest way to mesure 60/40? All that without DI to see if RO is doing its job? Thanks
tap tds - 350ppm
tap pressure 40psi
Should I get under 20ppm after RO?