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wightsurf

  • Posts: 1774
Ro-DI Help needed please
« on: March 26, 2008, 09:36:34 pm »
Fitted my upgrade kit today on my 100 gpd ro unit,has mad no difference at all my presure is still 40 psi and out put of water is the same ! i was hoping this would push the psi up a bit and lower waste water. May be i should put new filters in but i can't find the coconut filter.I have found the Active carbon and the inline carbon and the 5 micron filters but not coconut  ???
I have checked and doulble check all the pipe work and it's the right way  :P
So i was wondering what is the waste water tds reading and why rather than run it down the drain why can't it be rerun back through the ro unit again,would this kill the prefilters quickly ? Or would it just not work and if it did work would it out way cost of prefilters to waste water ?
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Chris Cottrell

  • Posts: 3162
Re: Ro-DI Help needed please
« Reply #1 on: March 26, 2008, 09:39:59 pm »
just checking the waste from your 1st mem does go to the feed on the 2nd mem  ???
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wightsurf

  • Posts: 1774
Re: Ro-DI Help needed please
« Reply #2 on: March 26, 2008, 09:41:02 pm »
Yes thats right
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Chris Cottrell

  • Posts: 3162
Re: Ro-DI Help needed please
« Reply #3 on: March 26, 2008, 09:44:15 pm »
ok then thats a relief I must have read it diff, when I put on my 2nd membrane and for that the 3rd too the pressure went down but the out put ratio went up to 50/50 thats the best I can get to
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wightsurf

  • Posts: 1774
Re: Ro-DI Help needed please
« Reply #4 on: March 26, 2008, 09:47:37 pm »
What presure is yours running at please ??
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Chris Cottrell

  • Posts: 3162
Re: Ro-DI Help needed please
« Reply #5 on: March 26, 2008, 09:49:28 pm »
95 psi pumped with a 100psi pump
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wightsurf

  • Posts: 1774
Re: Ro-DI Help needed please
« Reply #6 on: March 26, 2008, 09:51:54 pm »
do you think i should buy a pump,Any ideas on a pump also would be good Thanks
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Chris Cottrell

  • Posts: 3162
Re: Ro-DI Help needed please
« Reply #7 on: March 26, 2008, 09:55:15 pm »
Yes a pump would defo help improve your output & this is not much help I know cos the pump would recommend is no longer available but you can get an alternative from RO Man have a look on their site for 100psi pumps
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Chris Cottrell

  • Posts: 3162
Re: Ro-DI Help needed please
« Reply #8 on: March 26, 2008, 09:59:18 pm »
Sorry just looked on RO Man site they no longer have any listed curiously
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wightsurf

  • Posts: 1774
Re: Ro-DI Help needed please
« Reply #9 on: March 26, 2008, 10:05:15 pm »
I have just been looking there for one they have this one
Pressure-Regulating Pump for ALL systems to 100 gpd and RO-MAN sysems to 300gpd @ £77.50
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Chris Cottrell

  • Posts: 3162
Re: Ro-DI Help needed please
« Reply #10 on: March 26, 2008, 10:09:28 pm »
sorry must be having a senior moment here... thats the pump alright
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wightsurf

  • Posts: 1774
Re: Ro-DI Help needed please
« Reply #11 on: March 26, 2008, 10:11:17 pm »
Think i will try that,Thanks for info

Regards

Martin
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Peter Fogwill

  • Posts: 1415
Re: Ro-DI Help needed please
« Reply #12 on: March 26, 2008, 10:20:12 pm »
Quote from: wightsurf on March 26, 2008, 10:11:17 pm
Think i will try that,Thanks for info

Regards

Martin

The pump will definitely make a difference.  I wouldn't think you will get any better than 50/50, if you do then your membranes will need replaced prematurely.

Peter
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