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Hopper wall build up?

Post in 'The Pellet Mill - Pellet and Multifuel Stoves' started by Evan_J, Jan 26, 2013.

  1. Evan_J

    Evan_J Member

    Joined:
    Dec 23, 2010
    Messages:
    54
    Loc:
    Southern NH
    Over time the sides of the hopper on our Harman Accentra insert built up a coating of some sort. I'm trying to figure out if it is residue from the pellets we've used or ....? The slide plate is free and clean only the hopper walls seem to be involved. Scraping it off with a razor blade worked best, and it broke down almost like sawdust when scraped off. I started to clean before snapping the pictures so you can see the difference. Anyone have any idea if this is just baked on pellet remains or the sign of something wrong with the stove? Stove runs clean and hot with no apparent issues. hopper1.JPG hopper2.JPG hopper3.JPG

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  2. midfielder

    midfielder Feeling the Heat

    Joined:
    Dec 17, 2011
    Messages:
    281
    Loc:
    NH
    I get some of that from the Vts I'm burning. In my stove the hopper gets pretty warm and I think the heat brings some of the resins out of the fines and sticks it to the hopper walls.
  3. jtakeman

    jtakeman Minister of Fire

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    Dec 30, 2008
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    13,488
    Loc:
    Northwestern CT.
    Do a search here for gummy stove. I believe your stove has that issue!
  4. gbreda

    gbreda Minister of Fire

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    Lakes Region, NH
    My first thought too, but the slide plate is free and clear. I thought that would be first to gum up?

    For Evan's sake, I hope we are wrong.
  5. Defiant

    Defiant Vermont Castings Geek

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    2,109
    Loc:
    Old Lyme CT
    When the hopper is empty wipe the walls down with wax paper. It's like waxing your skis, and will make the walls slippery again. Don't laugh, give it a try, it works.:cool:
  6. Evan_J

    Evan_J Member

    Joined:
    Dec 23, 2010
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    54
    Loc:
    Southern NH
    Midfielder -our hopper gets pretty warm too, especially when the stove is cranking. I'm leaning towards it being a resin type mess.

    Jtakeman - I've seen some of the threads on gummy stoves, and one with a mod to fix it, but my understanding was that was on older stoves. Ours was made in December 2010, and if I remember correctly already has the a bi-pass tube from the factory. I could be wrong though, that's why I posted. Plenty of users on here with more knowledge on this stuff than I have.

    gbreda - that was my thought too that the slide plate would be a mess if I had the gummy stove.

    Defiant - making the hopper walls slippery sounds good. Although, when I think wax I think candle... but doubt I'd get enough wax off of wax paper to pose any fire hazard.
  7. Defiant

    Defiant Vermont Castings Geek

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    Old Lyme CT
    Try it. I do it on my XXV, heard about it from a friend that has an Accentra insert with the same issue as you:cool:
  8. boo boo

    boo boo Feeling the Heat

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    So. NH
    Found this thread doing a search for sticky hopper walls. The wax paper works great. Fast and easy. Thanks
    Defiant likes this.
  9. Eatonpcat

    Eatonpcat Minister of Fire

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    Finally a use for wax paper...I think we've had the same roll in the drawer for 15 years!! LOL
  10. ivanhoe

    ivanhoe Feeling the Heat

    Joined:
    Dec 27, 2008
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    262
    Loc:
    great white northern ontario
    I just finished cleaning my hopper this morning. The pellet residue was building up and I hot water wiped the hopper. Then i sprayed furniture polisher on a rag and wiped down the hopper. Certain pellets are the culprit:mad: and I just finished the last of them.:cool: (Granulco, they had a funny sticky feel to them!) Gotta try the wax paper method on the next wipe.;)
  11. Lake Girl

    Lake Girl Minister of Fire

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    1,956
    Loc:
    NW Ontario
    I get a build up on the front wall of my hopper that is slanted over the heat exchanger area. I use scotchbrite pad. I figure it is the softwood pellets getting warmer ...
  12. Evan_J

    Evan_J Member

    Joined:
    Dec 23, 2010
    Messages:
    54
    Loc:
    Southern NH
    Yeah, I've come to the conclusion that it has to be the pellets. I've cleaned off the hopper walls a couple times this season, but it's been easier to just keep it full than to worry having every last pellet slide. I've burned a few different brands this year (Trebio\MWP Softies\BoundaryBay\Vermont) and I seem to have the same result with all of them. I will have to give the hopper a good thorough cleaning at the end of the season.
  13. DexterDay

    DexterDay Guest

    Certain pellets that get "Hot" seem to leave this, on my old Stove I get this on just the front wall of hopper.

    It's 17 yrs old. So I just leave it.. ;) never had an issue on any other stove, but there are numerous air spaces and insulation on my other stoves.

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