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Old 04-17-2006, 10:50 PM   #11
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Waste line has to be open or you will ruin the RO membrane.
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Old 04-17-2006, 11:33 PM   #12
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Judging by your picture all of your water will go through your di filter although it is ok it is a waste of DI in my opinion. Although i don't have that brand of ro-di, mine is hooked up as the attached picture shows. Also make sure your storage tank valve is in the open position so it can fill up the tank.
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Old 04-17-2006, 11:52 PM   #13
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All right, thanks guys, advice taken. Wastewater ballcock open like a mofo. You know it's just funny to me, I been an injuneer for long long time. Gradyouated from decent university. I understand basic chemistry and thermodynamics and I can **** sure design and sell you a piece of gigantic mechanical equipment that cost a millon dollars. But, for for some reason the concept of the ro/di was foreign to me. My lovely wife even laughed at me in a good natured way, the same way I might laugh at her for not being able to sew a button on a shirt for some crazy reason.

My PHD biologist/zoologist/bacteriologist/arachneologist and dna geneticist father in law came over and explained more than I could ever hope to remember about water purity. He says, according to my ro/di tests, that my parameters are excellent and that the basic AP tests are really good. Believe it or leave it but I tend to trust the guy because he's just never been wrong about anything to do with biology. 8)
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Old 04-18-2006, 07:08 PM   #14
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I need help with this same unit I have drain line open and I have good pressure but very little output and the drain line has water constantly coming out.

Any suggestions
At this rate my water bill will be high.
Does the Drain line stop when the tank gets full?
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Old 04-22-2006, 11:21 PM   #15
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I have that same RO/DI setup. The waste valve is a special Ball Valve Restrictor & Quick membrane Wash. The valve should actually be closed during normal use. The closed position forces the water to go through the membrane, the open position allows all the water to pass over the membrane and washes it off.

The RO membrane is self-flushing and should not need to be flushed but if you have very bad feed water it could become silted up and you then could turn the valve open to flush the membrane. Again in this system the valve should be closed. Even in the closed position you will still see a great amount of waste water coming from the waste line.
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Old 04-23-2006, 03:12 AM   #16
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Now I'm really confused. Jasno999 and Brenden say the waste valve has to be open. SW-FLguy says with THIS unit the valve should stay closed except to flush the membrane. I assumed they all worked the same. Is there a possibilty THIS is different? I will say it seems to work with the drain valve closed and I just get a few drips with the valve open. Now what?

I bought the unit from Ebay. The seller has been pretty responsive to emails and seems concerned I'm having issues. I have just been busy and haven't really had the time to mess with the unit.
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Old 04-23-2006, 09:21 AM   #17
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The way I read it the valve should be closed. It's not like no water comes out of the waste line if you close the valve, plenty of waste still comes out. I tink the valve should be in the closed position and open to flush the membrane.

I do have another question. Does it take time to break in before you will get a reading near 0? I have only started using mine since yesterday and have made about 10 Gallons of water. My reading are now at 14 from my TDS meter. The number does seem to go down a point with each few gallons I make so I am hoping that is the case. The purified water I was buying from Publix measured a 1 with my TDS meter. Is a reading of 14 to high to use in my tank as top off water?

The good news is the unit does appear to be working as my water out of the tap measures 230 PPM

Thanks
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Old 04-23-2006, 10:28 AM   #18
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the valve is actual a restrictor to give you pressure to force the water through the membrane. it should be closed to fill the tank. you can open the valve to flush the system. it is the same system i have from filter direct with a deferent name.

when you used the words "waist line" and "closed" it probably gave people the wrong idea.
the whole reason it uses the tank is so that you can fill it up and have some fresh water on hand to use for drinking and di for the tank. the water in the tank is used for both just plumbed through different lines for final product. maybe that helps. dorian
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Old 04-24-2006, 01:43 PM   #19
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If you close the waste water line where does the unpure water goes? If you keep the waste water line open all the water seems to go down the waste line. Im getting very little output from this ro/di unit.
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Old 04-24-2006, 06:36 PM   #20
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im sorry, ive been giving all these colors and just noticed the pic.

if you close the restrictor you still have waiste going to the drain. it just slows down the rate of waiste water causing presure. with it open, your waiste water is tap water that has been sent through three sedament filters but has not made it through the ro membrane.

is the unit rated at 100 gpd? if so, thats no more than a slow drisel unless you alow the tank to fill.
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