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Tom Mac

  • Posts: 205
RO filters
« on: September 08, 2009, 05:16:43 pm »
How do you know when your RO filters need replacing. I only ask because all of a sudden i need to be changing the resin  more often. I have replaced the 3 cartridges as well
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AJ

  • Posts: 1262
Re: RO filters
« Reply #1 on: September 08, 2009, 05:33:41 pm »
Check the TDS before it goes into the resin. If it has started to rise quite a bit, you probably need a new RO membrane. Depending on which Ro you use and how much water you produce, you will usually look to change the membrane every two - three years.
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matt

Re: RO filters
« Reply #2 on: September 08, 2009, 08:03:28 pm »
check the water before the DI resin

if its above 015 i change the filters
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ftp

  • Posts: 4694
Re: RO filters
« Reply #3 on: September 08, 2009, 10:05:52 pm »
Every six months for me (as sticker on my unit says) Just changed mine only yesterday.
If you mean membranes then my first lot lasted two and a half years.
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Tom Mac

  • Posts: 205
Re: RO filters
« Reply #4 on: September 09, 2009, 08:35:01 am »
Yes i meant membranes
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Blue Frog Systems

  • Posts: 3813
Re: RO filters
« Reply #5 on: September 09, 2009, 10:33:29 am »
How long since you changed you membranes / how long since you bought your system ?

What RO do you use ?

Will help with answers
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