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Thread: Lapierre mechanical sap releasers

  1. #11
    Join Date
    Apr 2005
    Location
    Cayuta NY
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    767

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    Quote Originally Posted by wiam View Post
    My single vertical that has worked well for probably 10 years is doing something different this year. Before I have run low 20's for vacuum. This year I have a different pump and getting over 27". After a dump it takes close to half a minute for upper chamber to open and violent bubbles come back up through. Is this normal for higher vacuum?
    I have that happen on my releaser
    Jeff

    470 taps
    Kinney KS-15 High Vac with Lapierre Horizontal releaser
    Leader 2x6 Patriot raised flue
    Leader 2x4 Steamaway
    Wildfire arch
    MES Dolly 300 3 post RO
    Sheets 5" Filter Press with air pump
    and still lookin to get bigger

  2. #12
    Join Date
    May 2009
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    UVM Proctor Maple Research Center, Underhill Ctr, VT
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    5,048

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    High vacuum is quite difficult for most any mechanical releaser to deal with. The forces involved are quite severe. Regular maintenance and replacement of parts will help, but they will still have trouble more frequently at higher vacuum levels. You need to keep a close eye on them.
    Dr. Tim Perkins
    UVM Proctor Maple Research Ctr
    http://www.uvm.edu/~pmrc
    https://mapleresearch.org
    Timothy.Perkins@uvm.edu

  3. #13
    Join Date
    Dec 2002
    Location
    Loudon NH
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    5,639

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    Quote Originally Posted by wiam View Post
    My single vertical that has worked well for probably 10 years is doing something different this year. Before I have run low 20's for vacuum. This year I have a different pump and getting over 27". After a dump it takes close to half a minute for upper chamber to open and violent bubbles come back up through. Is this normal for higher vacuum?
    Mine does bubble but not violently. The flapper isn"t completely sealing and the vaccum in the secondary chamber is pulling air up through the seal.
    Russ

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

    Algier 2x6 evaporator, W F Mason arch
    Lapierre 250 Turbo RO machine
    SP-22 vacuum pump
    1930 Ford Model AA Doodlebug tractor
    1971 IH 454 52hp diesel tractor
    A couple of Honda 4 wheelers
    About a dozen chainsaws and no chickens

  4. #14
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    May 2009
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    UVM Proctor Maple Research Center, Underhill Ctr, VT
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    Quote Originally Posted by Russell Lampron View Post
    Mine does bubble but not violently. The flapper isn"t completely sealing and the vaccum in the secondary chamber is pulling air up through the seal.
    New flapper (or cleaning the flapper) and seat might help.
    Dr. Tim Perkins
    UVM Proctor Maple Research Ctr
    http://www.uvm.edu/~pmrc
    https://mapleresearch.org
    Timothy.Perkins@uvm.edu

  5. #15
    Join Date
    Dec 2006
    Location
    NE PA (Pocono's)
    Posts
    1,408

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    Quote Originally Posted by wiam View Post
    My single vertical that has worked well for probably 10 years is doing something different this year. Before I have run low 20's for vacuum. This year I have a different pump and getting over 27". After a dump it takes close to half a minute for upper chamber to open and violent bubbles come back up through. Is this normal for higher vacuum?
    Wiam- any luck with a fix? My system is super tight now and vacuum at 26 but now have the same problem you mention. It opens eventually to drain but only after top cannister is almost full of incoming sap.

    thanks
    Mike
    Algier 2x6
    Around 2500 taps
    Polaris ATVs, Ski Doo snowmobiles to get around
    Atlas Copco, Surge SP-22 pumps
    Lapierre 600 RO




    http://s272.photobucket.com/albums/j...Sugar%20shack/

  6. #16
    Join Date
    Nov 2010
    Location
    Barnet, VT
    Posts
    2,502

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    No fix last year. This year I did ad an 80 gallon vacuum chamber at the releaser (1600’ from pump). Quicker recovery on vac in releaser. Sap has not run much yet so I don’t know if it helped.
    William
    900 taps plus 1200 purchased sap
    3 X 12 Thor pans on a Brian design arch
    1986 Seprotech 900 RO

  7. #17
    Join Date
    Mar 2008
    Location
    Barrington, NH
    Posts
    2,621

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    You can buy rebuild kits for them, and the key thing I noticed was keeping them well lubed. Once I started doing that, it was mostly trouble free.

    It's been a while since, I had mine, but I do remember when running high vac. the tripping process could get pretty violent.
    Josh

    2009 - 370 on vac. & 16 buckets
    2010 - 377 on vac.
    2011 - 590 on vac.
    2012 - 620 on high vac., 170 buckets, 110 on gravity tubing
    2013 - 830 mine + 800-1000 others
    2014 - 870 mine + 800-1000 others
    2017 - 920 mine + 500-700 others
    2018 - 902 mine + 500-700 others
    2019 - 902 mine + 700 others
    2020 - 902 mine + ???? others
    Atlas Copco Pump
    2.5'x8' 802maple Special with Dallaire pans
    H2O Innovation 600gph RO
    Spring Harvest Website

  8. #18
    Join Date
    Jan 2013
    Location
    Jonesville, Vermont
    Posts
    46

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    Quote Originally Posted by wiam View Post
    No fix last year. This year I did ad an 80 gallon vacuum chamber at the releaser (1600’ from pump). Quicker recovery on vac in releaser. Sap has not run much yet so I don’t know if it helped.
    I would be curious how this works out. I plumbed my releaser so that I can a barrel to act as “capacitor” to smooth the transition. At this point Im small enough that recovery isn’t an issue.
    425 trees on Vacuum
    Airiblo 3/4
    100 buckets
    Lapierre Mechanical releaser
    L3700 SU

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