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Thread: Project RO

  1. #1
    Join Date
    Mar 2010
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    Suamico, WI
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    Default Project RO

    Well here is my new to me RO. I haven't gotten ahold of a manual for it yet. It is a 6 post (4x40) culligan. Was just removed from service and working well as far as I know. My plan is to get new membranes, probably bypass the extra non essential electronics, and add a feed pump. Has anyone seen or converted one like this. I'm not an expert on them but I do currently have an RO and plan on just adding this to my fleet.
    Attached Images Attached Images
    custom made 2x7 intensofire
    With SL pans
    250 deer run
    300 3/16 (new 2016)
    500 sacks around the neighborhood

  2. #2
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    Found the manual and specs on the pump. It is a 1hp, multi stage( I think 10) 10 gpm.
    So for all you RO guys.....how many of the six 4x40 posts should I use?
    custom made 2x7 intensofire
    With SL pans
    250 deer run
    300 3/16 (new 2016)
    500 sacks around the neighborhood

  3. #3
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    Mar 2010
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    Suamico, WI
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    Tag on the pump
    Attached Images Attached Images
    custom made 2x7 intensofire
    With SL pans
    250 deer run
    300 3/16 (new 2016)
    500 sacks around the neighborhood

  4. #4
    Join Date
    Mar 2011
    Location
    Potter County, PA
    Posts
    815

    Default

    1 maybe 2..
    Make sure you have a good lift pump.
    2008 4 buckets
    ~
    2016 1300 vac tubing
    18x24 sugar shack
    2x6 Grimm Lightning w/preheater on natural gas
    7" full bank press
    CDL 600 RO
    2000 Sonoma w/ 200gal tank
    2003 Duramax w/ 500 gal tank
    2 sap guzzling kids
    very patient wife!

    Same ol' addiction

  5. #5
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    UVM Proctor Maple Research Center, Underhill Ctr, VT
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    The main thing to keep in mind is the way it is plumbed, you need to keep what is normally rejected by this machine, and reject what is normally kept. Otherwise you're going to have a LOT of boiling to do, and not a lot of syrup to show for it.
    Dr. Tim Perkins
    UVM Proctor Maple Research Ctr
    http://www.uvm.edu/~pmrc
    https://mapleresearch.org
    Timothy.Perkins@uvm.edu

  6. #6
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    Suamico, WI
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    Default

    Quote Originally Posted by mellondome View Post
    1 maybe 2..
    Make sure you have a good lift pump.
    Hmmm, what makes you think that? I have a 2 post 4x40 with a smaller pump with half the GPM rating.
    custom made 2x7 intensofire
    With SL pans
    250 deer run
    300 3/16 (new 2016)
    500 sacks around the neighborhood

  7. #7
    Join Date
    Mar 2010
    Location
    Suamico, WI
    Posts
    1,175

    Default

    Quote Originally Posted by DrTimPerkins View Post
    The main thing to keep in mind is the way it is plumbed, you need to keep what is normally rejected by this machine, and reject what is normally kept. Otherwise you're going to have a LOT of boiling to do, and not a lot of syrup to show for it.
    Haha, thanks Doc!
    I did forget to mention I need to swap out all the lines to beef it up to a 300 psi unit
    custom made 2x7 intensofire
    With SL pans
    250 deer run
    300 3/16 (new 2016)
    500 sacks around the neighborhood

  8. #8
    Join Date
    Mar 2011
    Location
    Potter County, PA
    Posts
    815

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    Without recircularion internal to the membrane posts, your max water removal will be some where between 150psi and 175psi. I used to run a 4x40 with a 1ph 10gpm multistage goulds pump with a 3/4hp lift pump feeding it. The flow @ pressure wasnt enough for 2 membranes in parallel. It may have been in series, but not sure. The 10gal/min is at no pressure. You need to find the pressure / flow curve for the pump to know. Also you will need the specs from the membrane manufacturer for max pressure loss across the membrane and flow rates across the membrane surface. For best performance you will want close to max surface flow allowed.
    Last edited by mellondome; 06-21-2018 at 12:40 PM.
    2008 4 buckets
    ~
    2016 1300 vac tubing
    18x24 sugar shack
    2x6 Grimm Lightning w/preheater on natural gas
    7" full bank press
    CDL 600 RO
    2000 Sonoma w/ 200gal tank
    2003 Duramax w/ 500 gal tank
    2 sap guzzling kids
    very patient wife!

    Same ol' addiction

  9. #9
    Join Date
    Mar 2010
    Location
    Suamico, WI
    Posts
    1,175

    Default

    Interesting, I currently run a much smaller pump with 2 posts. No recirculating pump but a needle valve and recirculating loop. I run 250-275 psi and can go up to 10% but it is much more efficient time wise to go to 5-6% and then run a second time to 8-10.
    custom made 2x7 intensofire
    With SL pans
    250 deer run
    300 3/16 (new 2016)
    500 sacks around the neighborhood

  10. #10
    Join Date
    Mar 2011
    Location
    Potter County, PA
    Posts
    815

    Default

    What is your other pump?
    If it is the deer run in your signature, that is probably a pressure washer pump . ( piston pump ) .
    2 completely different things
    Last edited by mellondome; 06-21-2018 at 09:56 PM.
    2008 4 buckets
    ~
    2016 1300 vac tubing
    18x24 sugar shack
    2x6 Grimm Lightning w/preheater on natural gas
    7" full bank press
    CDL 600 RO
    2000 Sonoma w/ 200gal tank
    2003 Duramax w/ 500 gal tank
    2 sap guzzling kids
    very patient wife!

    Same ol' addiction

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