+ Reply to Thread
Results 1 to 6 of 6

Thread: First time filling my evaporator

  1. #1
    Join Date
    Feb 2013
    Cloquet, mn

    Default First time filling my evaporator

    OK, I bought a used 30x10' raised flue evaporator. Now what?? How do I fill the evaporator initially? Do I just fill both pans and fire it up? I'm pretty sure I'll need some sort of step-by-step procedure. Any suggestions will be appreciated.
    Thanks in advance.

  2. #2
    Join Date
    Feb 2012
    Birdsboro PA

    Default First time filling my evaporator

    I know it will be a waste of wood, but run it with water for a good few hours. That will help you get a feel for how it runs. Keep an o-**** bucket handy.
    But yes, at the beginning of the season once you have enough sap to make it worth your while, just fill her up to a level your comfortable running it, and have at it.
    first year 2012 50 taps late season made 2 1/2 gals.

    2013 2x6 homemade arch 180 taps. 20 Gals.

    2014 40 on 3/16 gravity 160 on buckets.


  3. #3
    Join Date
    Feb 2012
    Fond du Lac, Wisconsin


    If you run it on water for a few hours, add some vinegar near the end to take off the hard water scale that will form on the pan.

  4. #4
    Join Date
    Mar 2006
    Eden Prairie, MN


    If this is the first time you will run a continuous flow evaporator, you might want to go see someone else's in operation. That is a big rig to start out on!
    2x8 Smokylake drop flue with AOF/ AUF
    180 taps on sacks
    60 on 3/16 tubing with shurflo
    Eden Prairie, Minnesota

  5. #5
    Join Date
    Mar 2005
    Albion PA


    Dont start a fire untill you have a 1ich min in all pan areas. Raised flue should be filled from the from rear float box and then sap (water) should be held back with the float system in the front.
    It should boil at a rate of 80 GPH (at least) so have some water ready in the head tank to feed the rig.
    Casbohm Maple and Honey
    640 ish roadside taps
    3x10 King, WRU & preheater, AOF [TRS] and AUF
    SIRO Filter Press.
    2015 Ford F250 PSD sap hauler
    One hives of bees
    One Golden named Maggie Cat named Lucy
    Too many Cub Cadets
    Ford Jubilee and several Allis WD's, and IH tractors


  6. #6
    Join Date
    Jan 2006
    Oneida NY


    After you have gotten a little use from it on water drain completely. When you start your season, you want between 250 and 300 gal of sap before you run the first fire (or what was that much sap before running it thru an RO). That is what you need minimum to sweeten the pans. Once sweetened, they don't need to be drained unless a hard freeze is forecast (like 10 F or colder) Slush will form on the top but it will not freeze solid.
    Dave Klish about 1320 taps in '15, down to about 700 in '16, up to 1000 for 2019?
    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
    website: www.cnymaple.com

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts