Help with ro please!!

Discussion in 'Water Fed Pole Cleaning' started by Carlwindy, Oct 12, 2016.

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  1. Carlwindy

    Carlwindy Active Member
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    Right guys a bit of help please! I've had my ro for around 2 years but only ever really used my pole for those awkward windows but in the last few months I've been using it more and more and I noticed that my resin started not to last very long so I checked the tds coming out of my ro and it was over 200 lol! So my question is do I need new filters/membrane or both? Thanks.
     
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  2. johnny bravo

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    WHAT RO, you just use it for awkward windows, explain.
    do you just use a backpack, You have not explained your situation very clearly.
     
  3. Carlwindy

    Carlwindy Active Member
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    Yes I use a back pack mate. I have ro and di set up in the shed to make my water!
     
  4. Carlwindy

    Carlwindy Active Member
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    And it's a 300gpd from colins water products
     
  5. spruce

    spruce Grand Master
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    #5 spruce, Oct 12, 2016
    Last edited: Oct 12, 2016
    You generally have to change prefilters every 3 months. Because of the way you are asking it sounds as though you have never replaced prefilters. Forgive me if I'm wrong.

    With water coming out that bad (you haven't told us your tap water tds) then you need new membranes as well. Changing prefilters will do nothing to improve the quality of the water your membranes are producing.

    I have nothing against Collins Water but you need to be buying membranes from a supplier that sells a better quality membrane that suit window cleaning applications. Their membranes are cheap but aren't as efficient as membranes Gardiners and Daqua sell. IMHO now is the time to replace the 100GPD membranes with 150GPD ones and replace the restrictor if your r/o has one.

    I'm sure if you had done a search you would have brought up this thread 6 weeks ago which has lots of useful info.
    more ro stuff

    At the moment, what waste to pure ratio is your r/o working at?
     
  6. johnny bravo

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    i got my 3 x 100 membranes off ebay, but good quality, around £100, what a difference, if you need a booster pump get the purefreedom one, unless you are lucky enough to leave tap on 24/7. My 300 + booster pump give 220 litres in around 3 hours. my tap water is around 148 into 300 ro, comes out at 003, through 2x 10 inch DI vessls
     
  7. johnny bravo

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    look around for the same brand membranes as the good pure water suppliers,
     
  8. Carlwindy

    Carlwindy Active Member
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    I will just change the filters and mebranes with some decent ones then! No I have never changed anything on it because I haven't really used it that much tell recently. My tap tds is 350! I don't no nothing about ro's but looking at it I'm guessing they is 3 pre filters vertical and 2 membranes at the top horizontal..is that right?
     
  9. steve garwood

    steve garwood ginger lion
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    Yes
     
  10. spruce

    spruce Grand Master
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    OK. Your are correct.

    Collins have used 2 x 150 GPD membranes to get the 300GPD spec. Most others have 3 x membrane housings using 100GPD membranes. So you can only order 150GPD membranes. Ordering 2 x 100 GPD will slow water production down by a third.

    The prefilters are the 3 you refer to. However caution is needed as I don't know the configuration of r/o that Collins supplies. On the r/o I first started with the first prefilter was a sediment prefilter. The second was a carbon block. The third was a small di vessel. Other suppliers choose to supply a sediment prefilter, a carbon block and then a GAC filter to make the water taste better which doesn't apply to window cleaners. They don't have an 'on-board' di vessel.

    What di vessel are you using?

    Daqua sell 150 GPD membranes. Gardiners don't. Daqua also sell 10" sediment and long life carbon block prefilters. You need 1 sediment filter and 1 carbon block. If you have another housing which has a GAC filter then you just remove it and leave the housing empty. Personally I would upgrade the system by adding another housing, a couple of support brackets, some more 1/4" tubing and John Guest t pieces. Your r/o will produce water a little faster with 3 x 150GPD membranes working and the upgrade isn't that expensive.

    I have never seen a mention of window cleaning application on the Collins website site, probably for good reason. IMHO their r/o's are not up to window cleaning standards. But windies still buy from them as they are a couple of pounds cheaper. The membranes they sell are Asian copies of American quailty products. They are cheap but long term its false economy.

    How do you control your waste water through the r/o?

    .
     
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