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Thread: Preheater Exterior cleaning

  1. #1
    Join Date
    Mar 2015
    Location
    Esko,MN
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    169

    Default Preheater Exterior cleaning

    Last year was my first year with a preheater. At the end of the year, I ran 65 gallons of fresh water through the preheater to clean it out. I also decided to try letting the left over partially boiled sap set in the pans for cleaning. After about two months, I cleaned the pans. It stunk like vinegar but worked. What I noticed however, is that with the moist environment the preheater was in under the hood, the outer copper tubing developed quite a bit of oxidation with green color to the exterior of the preheater pipe. What should I do to clean this prior to boiling sap this coming spring?
    Chad

    2014: 12 taps, 5 gal buckets
    2015: 15 taps on bags
    2016: 150 taps: 100 on bags, 50 on 3/16" natural vac, 2x8 AUF/AOF Homebuilt Arch, 2x8 SL Drop Flu & Auto Draw, SL Propane Canner/Bottler
    2017: 225 taps: Built Lean to, Added SL hood, preheater, concentric exhaust, SL SS 7" SB Filter Press

  2. #2
    Join Date
    May 2006
    Location
    New Hartford, N.Y.
    Posts
    1,867

    Default

    I'm not sure what cleaners or solvents might clean that up. On the other hand, you probably don't want those anywhere near the evaporator anyway. You might be looking at a lot of wire brushing (power or by hand) and sandpaper or Scotchbrite action. Along with copious amounts of elbow grease. That would be the safest way in my opinion.
    2014 Upgrades!: 24x40 sugarhouse & 30"x10' Lapierre welded pans, wood fired w/ forced draft, homemade hood & preheater
    400 taps- half on gravity 5/16, half on gravity 3/16
    Airablo R.O. machine - in the house basement!
    Ford F-350 4x4 sap gatherer
    An assortment of barrels, cage tanks & bulk tanks- with one operational for cooling/holding concentrate
    And a few puzzled neighbors...

    http://s606.photobucket.com/albums/t...uckethead1920/

  3. #3
    Join Date
    Feb 2007
    Location
    CAPAC MICHIGAN
    Posts
    681

    Default

    if its copper wash it down with tomato juice and rinse with water. Copper will look brand new
    2x6 RAISED FLUE PANS
    by WF MASON
    350 taps on vac.

  4. #4
    Join Date
    Apr 2015
    Location
    Central, NH
    Posts
    67

    Default

    And a little ketchup and 00steel wool for those tough spots.
    Matt Durrell
    2012 - 12 Taps hand me down 2x2 and made a barrel stove
    2014 - 20 Taps 8x10 timber-frame shack
    2015 - 25 Taps
    2016 - 28 Taps new 110 acres
    2017 - 12 Taps january, 55 Taps spring and 15 Taps fall, same ol 2x2
    2018 - Helping another sugarmaker 5000 Taps

  5. #5
    Join Date
    Apr 2013
    Location
    Derby, Vermont
    Posts
    265

    Default

    not sure the size of the preheater you have, but if you can soak it in vinegar. that'll clean it up.
    Awfully thankful for an understanding wife!

    “The only place success comes before work is in the dictionary.”
    - Vincent “Vince” Lombardi

    Good luck to all!

  6. #6
    Join Date
    Mar 2015
    Location
    Esko,MN
    Posts
    169

    Default

    I've got a 2x6 flue pan with preheater and hood. Do you think it would work to dump 8-10 gallons of vinegar and fill the evaporator and run it?
    Chad

    2014: 12 taps, 5 gal buckets
    2015: 15 taps on bags
    2016: 150 taps: 100 on bags, 50 on 3/16" natural vac, 2x8 AUF/AOF Homebuilt Arch, 2x8 SL Drop Flu & Auto Draw, SL Propane Canner/Bottler
    2017: 225 taps: Built Lean to, Added SL hood, preheater, concentric exhaust, SL SS 7" SB Filter Press

  7. #7
    Join Date
    May 2006
    Location
    New Hartford, N.Y.
    Posts
    1,867

    Default

    I don't know if that would do anything for it or not. I'm thinking not. I'm also thinking hot and/or boiling vinegar isn't something I'd care to be around.

    I know the time and effort from actually scrubbing it doesn't sound like fun, and it won't be, but it will get the job done and there won't be any risk associated with it. Good luck and let us know how whichever process you use works out.
    2014 Upgrades!: 24x40 sugarhouse & 30"x10' Lapierre welded pans, wood fired w/ forced draft, homemade hood & preheater
    400 taps- half on gravity 5/16, half on gravity 3/16
    Airablo R.O. machine - in the house basement!
    Ford F-350 4x4 sap gatherer
    An assortment of barrels, cage tanks & bulk tanks- with one operational for cooling/holding concentrate
    And a few puzzled neighbors...

    http://s606.photobucket.com/albums/t...uckethead1920/

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