New HF5 4040 Membrane

Discussion in 'Water Fed Pole Cleaning' started by Matty H, Jan 23, 2012.

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  1. Matty H

    Matty H Forum Addict
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    Has anybody ever replaced theirs? I replaced mine at the weekend as it was 4 years old and the readings were creeping up weekly and had to keep flushing it but didn't make any difference...

    So, in goes my new one and the readings are high 25 - 30 :(

    Somebody said it takes a couple of weeks to get the readings down due to an antibacterial agent they put on in manufacture?

    I have flushed it twice - and yes it is in correctly with brine seal right way, etc....

    Feedback appreciated.

    Thanks
    Matt
     
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  2. James

    James Guru
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    It shouldn't be that high to start with, and those are myths about it taking weeks to settle in, a few hours maybe, but not weeks.

    What is your resin like?

    James.
     
  3. Matty H

    Matty H Forum Addict
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    Resin is irrelevant James, as I have an ionics system, that is the reading after RO into the tank. I was easily getting 8 on my last membrane before it started creeping up. resin obviously bringing it down to 0. faulty membrane perhaps?
     
  4. James

    James Guru
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    Ahh yes I see, umm perhaps a faulty membrane. But it's very rare you get one of these.

    What's the pressue your pushing the water through at? Also do you use a booster pump?

    James.
     
  5. Matty H

    Matty H Forum Addict
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    I have 55psi no booster pump - nothing else has changed on the set up just membrane. I will leave it for a week to see if the readings come down perhaps
     
  6. James

    James Guru
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    Thats a good idea, if it doesn't come down I would suggest looking at a booster pump. I ran mine at 55-60 psi but my ppm readings were still over 15..

    I bought in a booster pump as my window cleaning friend said my concentrated pressure wasn't high enough and the booster pump brought my readings down to 0ppm.

    James.
     
  7. Hinty

    Hinty Well-Known Member
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    We changed one a while back - took 3 or 4 days to come down - using 1000 litres per day.

    Would bear with it for a bit.
     
  8. James

    James Guru
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    Ahh if they take 3-4 days to come down then deffo wait abit.

    James.
     
  9. Matty H

    Matty H Forum Addict
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    Hi Hinty
    Thanks for the advice I'm on my 2nd 600ltr tank fill now as we speak and I'm getting 28ppm - will see what happens within the next week. Running that through the resin is going to use it up quickly though so will only bear with it for a week then contact supplier to see what they think!!! Matt
     
  10. Hinty

    Hinty Well-Known Member
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    Hi Matty,

    Had a thought -

    If you disconnect the pipe between the pre filters and the R.O. and take the TDS reading,
    then take the TDS reading of the waste water, and the TDS of the product water.

    Then add the Waste & product TDS readings together, and subtract the input TDS, then it will tell you how much is coming from the filter itself - which should decrease quite quickly.

    Hope that makes sense.
     
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