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Thread: Evap sap

  1. #1
    Join Date
    Mar 2016
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    Gorham Maine
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    Default Evap sap

    How long can the sap be left in the evaporator in between boils? Should sap be brought to a boil to keep from going sour?

  2. #2
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    BECKLEY, WV (SUGARHOUSE DAWSON, WV)
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    If this very warm yes it should be boiled every couple days to kill anything in it.
    Brandon

    CDL dealer for All of West Virginia & Virginia
    3x10 CDL Deluxe oil fired
    Kubota M7040 4x4 Tractor w/ 1153 Loader hauling sap
    2,400+ taps on 3/16 CDL natural vacuum on 9 properties
    24x56 sugarhouse
    CDL 1,000 2 post RO


    WEBSITE: http://danielsmaple.com

  3. #3
    Join Date
    Mar 2012
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    Walpole, NH
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    Unless your sugarhouse is heated, I bet it is like mine and the sap has ice in it after all the zero degree nights we have had. If that's the case, it should be fine.
    Sugaring for 45+ years
    New Sugarhouse 14'x32'
    New to Me Algier 2'x8' wood fired evaporator
    2022 added a used RB25 RO Bucket
    250 mostly Sugar Maples, 15% Soft Maples. Currently,(110on 3/16" and 125 on Shurflo 4008 vacuum, 15 gravity), (16,000 before being disabled)
    1947 Farmall H and Wagon with gathering tank
    2012 Kubota with forks to move wood around

  4. #4
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    Mar 2016
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    Gorham Maine
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    It did have some ice in it one morning which scared me, since then with this cold weather I've had a small electric heater going and a wood stove when it gets really cold. I have been watching the sap temp and it has been between 35-40 degrees. when checking on it today I noticed some slime in the cold sap float box, been sitting for 7 days.

  5. #5
    Join Date
    Jan 2006
    Location
    Oneida NY
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    With ice in it the sap will keep a long time, if heated to 40 it can spoil.
    Dave Klish, I recently bought a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
    Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
    Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
    After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.

  6. #6
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    Mar 2016
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    Gorham Maine
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    Brought the flue pan to 185 degrees today, the syrup pan was boiling. Then I shut it down. Gotta love oil. Isolated cold sap box, drained and cleaned. Good to go.

  7. #7
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    Jan 2016
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    KAHNAWAKE
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    This both a statement and a question. In southern Quebec area and I knew there was going to be 2 weeks of real cold Temps so I drained everything put it in 5 gallon pails and put in a walk in cooler. It's been 16 days, still good?

    Sent from my SM-G900W8 using Tapatalk

  8. #8
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    May 2011
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    River Falls, WI
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    Quote Originally Posted by Mitchhorne8 View Post
    This both a statement and a question. In southern Quebec area and I knew there was going to be 2 weeks of real cold Temps so I drained everything put it in 5 gallon pails and put in a walk in cooler. It's been 16 days, still good?

    Sent from my SM-G900W8 using Tapatalk
    I would very much think so. Of course you should trust your nose when you open the buckets and when you start cooking it. If you're concerned about it you could cook a very small sample on the kitchen stove to see what it turns into.
    Last edited by motowbrowne; 03-16-2017 at 08:39 PM.
    -Ryan


    Went off the deep end. Might be in over my head...

  9. #9
    Join Date
    Dec 2002
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    Rock Creek, NC
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    I always just leave the evaporator filled and let it freeze. It has sat for 3 weeks like that before and the sap was still good. My evaporator is a raised flue and there hasn't been any damage to the flues even with temps well below zero. If you have a drop flue you may want to drain it and let the sap freeze in buckets. Trying to keep it thawed will let the bacteria grow and the sap will spoil.
    Russ

    "Red Roof Maples" Where the term "boiling soda" was first introduced to the maple world!

    1930 Ford Model AA Doodlebug tractor
    A couple of Honda 4 wheelers
    Four chainsaws and no chickens!

  10. #10
    Join Date
    Mar 2016
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    Gorham Maine
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    I am scared to let it freeze, I have seen what kind of damage can be done to metal from ice.

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