4040

« **on:** February 12, 2015, 07:05:51 pm »

Hi guys I'm getting a ppm reading of 24 after ro, my resin isn't lasting long should I change my 4040 ro membrane. Cheers

« **Reply #1 on:** February 12, 2015, 08:04:29 pm »

Have you tried adjusting your pure:waste ratio?
You wanna be looking at 97%.
I'd guess less than 90% before looking to change.

« **Reply #2 on:** February 12, 2015, 08:07:08 pm »

Hi I have it at about 50/50 should I more waste ie 60/40

« **Reply #3 on:** February 12, 2015, 08:21:05 pm »

Adjust the waste till your lowest readings are achieved.

« **Reply #4 on:** February 12, 2015, 08:25:47 pm »

Quote from: Mr T on February 12, 2015, 08:07:08 pm

Hi I have it at about 50/50 should I more waste ie 60/40

Mine is about 60/40 but it depends on a lot of things.
TDS inlet being the biggest factor.
If you're on a meter being another.
& How quickly you need to produce pure probably make up the holy trinity of 4040 RO's.

« **Reply #5 on:** February 12, 2015, 08:47:35 pm »

how old is your membrane?

« **Reply #6 on:** February 12, 2015, 08:59:41 pm »

Membrane is 11 months old the previous one lasted 4 years

Mr T

4040

PoleKing

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Mr T

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Avo

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PoleKing

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Frankybadboy

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Mr T

Re: 4040