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  #11  
Old 11-15-2003, 12:48 AM
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Quote:
Originally Posted by EmilyB
water pressure is 42psi, but it's always been that way. Flow restrictor? I don't think I've ever seen it or taken it out?
at 42 PSI a RO isn't going to work very good at all. my 100 GPD unit used to fill up my top off bucket in 3.5 hours from empty with 100PSI, the other day when I did it with 42PSI it took me 2 days so you can see how much it slows down if you are aproching the 40PSI minimum.


ok on your waist water line there should be a insert that limits the flow of waist water. this will give you the back pressure you need to make the membrain work properly. do you have a flush valve? if so if you look at it it will look like a loop with a valve that you can open to flush your membrain, usaly this is taken off befor and after the flow restrictor.

If this is confusing take a couple pics of the tubing and I will try see how it is set up.



Steve
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  #12  
Old 11-21-2003, 12:02 AM
Veng68 Veng68 is offline
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did you ever figure it out Deb?

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Victor
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  #13  
Old 11-21-2003, 01:41 AM
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I did a 30 minute backflush and I have some flow now. I guess it is probably as good as I can get in the winter with 42psi and the cold water.
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  #14  
Old 11-21-2003, 02:40 AM
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you have a cloged membrain which you proved by backflushing it . how old is your ro . on the water machines i work on we get about a year out of a membrain . you can get allittle more life if you leave if on a back flush for a couple days . it is recomended to back flush them every couple weeks to prolong lifespan .
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  #15  
Old 11-21-2003, 03:31 AM
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Quote:
Originally Posted by golden69_ca
you have a cloged membrain which you proved by backflushing it .
She also has very cold water and only 42 PSI which means only about 20% of the rated flow.

Steve
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  #16  
Old 11-21-2003, 08:24 PM
Veng68 Veng68 is offline
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Quote:
Originally Posted by golden69_ca
you have a cloged membrain which you proved by backflushing it . how old is your ro . on the water machines i work on we get about a year out of a membrain . you can get allittle more life if you leave if on a back flush for a couple days . it is recomended to back flush them every couple weeks to prolong lifespan .
I notice that you are in the lower mainland........ how does the RO membrane clog within a year around here since our water has a very lower TDS?

Cheers,
Vic
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  #17  
Old 11-21-2003, 08:28 PM
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Vic, it's very difficult to gauge clogging in time. A lot depends on how many gallons you process. I go thru 40g/week with my unit and it's about 1.5 years old. Our TDS is fairly low here, but we have a lot of algae. I go thru prefilters like crazy
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  #18  
Old 11-22-2003, 12:44 AM
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I guess then the fact that the membrane is probably a year old, and I run double or more what Brad runs, I probably need a new one soon.
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  #19  
Old 11-22-2003, 03:51 AM
golden69_ca golden69_ca is offline
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the membraine will also catch organics . i know where the bad water sorces are in the lowermainland and trust me there are some bad areas that you would not think of .
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  #20  
Old 11-22-2003, 10:21 PM
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Hey Guys,
Actually 42 PSI is not that low. I have a 50GPD, and my inlet is only about 42psi. I fill a 8 gal bucket in a couple of hours. I do flush the unit for 5-10 min before I use it, and do longer run lengths (ie 8 gallons) every time I do it.

Mike
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