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Thread: How long for to wash cycle?

  1. #1
    Join Date
    Aug 2011
    Location
    Central PA
    Posts
    251

    Default How long for to wash cycle?

    My RO has no safety of any sort. I always stay close by to Lee an eye on things but the first wash I did with it took forever to raise in temp. I gave up and shut it down when it hit about 90ish.
    How long do most of your ro' s run till they hit 110 degrees or so?
    Mine's a single 4x40.
    Does anyone heat it up prior or add hot water while it's going?

  2. #2
    Join Date
    Mar 2015
    Location
    Peoria, IL
    Posts
    526

    Default

    I heat my wash water up to 110* and run the wash for 10 minutes. It drops about 10* in that time but I have had good results with this method.
    2019 - 150 taps 3/16 shurflo, Deer Run 125 dolly RO - 73 gallons
    2018 - 120 taps 3/16 hybrid (shurflo), 2x6 raised flue w/hood, homemade arch w/ AUF & AOF - 34.5 gallons
    2017 - 60 taps 3/16 gravity, oil tank arck w/ steam pans - 12.5 gallons

  3. #3
    Join Date
    Jan 2008
    Location
    Hopkinton, MA
    Posts
    1,466

    Default

    I also have a Deer Run and the directions say to heat the water first. I could see how that would take a while otherwise. The actual wash cycle is 10 minutes.
    Woodville Maples
    www.woodvillemaples.com
    www.facebook.com/woodvillemaples
    Something north of 250 taps
    Mix of natural and mechanical vac, S3 Controller from Mountain Maple
    2x6 W.F. Mason with Phaneuf pans
    Deer Run 125 RO
    6 hives of bees
    Keeping the day job until I can start living the dream.

  4. #4
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    9,868

    Default

    I also heat it to 105-110 then start the wash cycle. I also run the permeate portion during the wash cycle back thru my tankless water heater, I let it heat until the temp, during the wash gets to 110. As it goes thru the membrane all of the cold in the membrane goes back into the wash tank.
    I do not think the pump used on a Deer Run RO will heat the water very much. That practice is reserved to ROs with a higher operating pressure. Under 300 PSI would take far to long to get to 110 F just by operating the pump. A pump that generates much more pressure heats it much faster according to what I've read. My only experience is with a Deer Run RO.
    Dave Klish about 1320 taps in '15, doing fewer each year, about 450 planned for 2020 (and after?)
    2012 Mahindra 36 HP 4x4/ loader/cab/heat/AC:-)
    added a gooseneck equipment trailer and F350 to tow it to haul more sap
    3x8 raised flue evaporator
    250 GPH converted to electric, RO by Ray Gingerich
    6.32 KW solar system, 1.48KW is battery backed up, all net metered
    http://s1041.photobucket.com/albums/...anssugarhouse/
    website: www.cnymaple.com

  5. #5
    Join Date
    Aug 2011
    Location
    Central PA
    Posts
    251

    Default

    Makes a lot more sense. I'll give it a try this afternoon. Last time I let it wash for a better portion of the day. Maybe 5 - 6 hrs. It did heat but not much.
    Assuming acid wash is the same right?

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