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New HF5 4040 Membrane


Matty H

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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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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?

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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.

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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

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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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Ok lads listen to this; the supplier is telling me that a new membrane has to be flushed for 24 hours to remove all antibacterial process put on during manufacture???? Are they trying to fob me off here? That's seems a ridiculous amount of time to flush and as I'm on a meter would cost a bit of money in water. if I do it and still doesn't work I won't be very pleased

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I am surprised it's 24 hours.

 

You could still use the water - but it will take a bit out of your resin.

 

Would normally fit as usual, then discard the product water for an hour, then reconnect the resin.

 

It would be good to hear how it works out for you.

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Ok lads listen to this; the supplier is telling me that a new membrane has to be flushed for 24 hours to remove all antibacterial process put on during manufacture???? Are they trying to fob me off here? That's seems a ridiculous amount of time to flush and as I'm on a meter would cost a bit of money in water. if I do it and still doesn't work I won't be very pleased

 

Sounds a bit dodgey to me mate, I don't think they are telling you the truth there some how.

 

James.

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