noisy/whining feed motor and other associated noises.

kurthood Posted By kurthood, Jan 3, 2013 at 9:41 PM

  1. kurthood

    kurthood
    Member 2.
    NULL
    

    Jan 27, 2011
    24
    3
    Loc:
    southern NH
    Hello pellet folks,

    So ive run into a couple of issues as of late that I'd like to pick the collective pellet community brain about. The stove is a Harman P61A, purchased locally in New Hampshire in December of 2010. Going into the third burning season. This past burning season and current ive noticed some particular noises coming from the stove that seemed a little odd. I know theres a few sounds/noises to be expected in all mechanical things so I can accept those. These seemed a little uncommon. Every now and again, there will be a large clunk or series of clunking noises coming from the depths of the stove. My guess is that maybe a longer than normal pellet @ the edge of the feed tube just got lopped in half by the auger spinning its way through the tube? Anyone else heard this or can confirm or disprove my theory? Not a big deal really, happens every now and again, and the stove seems to run fine. Coincidently Ive only noticed it when burning this particular pellet. I burned Maine Woods last year and never heard it once, this past year and current Im burning Geneva pellets.


    The real issue is the excessive whining of the feed motor. It literally sounds like metal on metal scraping or kind of like a constant creaking door. Does this make sense the noise im trying to describe? I pulled the back panels off and watched the shaft turn and can confirm this is the cause of the noise. I also turned the shaft by hand and it was squeeking in the same manner. It usually occurs at the startup and once the stove gets up to a hot ripping temp, the noise typically goes away.

    Is this a sign that the motor is crapping out, or can these parts be removed, cleaned up and greased? It looked like the motor was attached to the shaft by a simple tensioning bolt onto the shaft. I was thinking of taking this thing all apart and doing some tinkering, but then was thinking about warranty etc. I imagine all sorts of dust has got back there and may start binding up all those essential moving augers and gears and whatnot. Thoughts from the community are greatly appreciated. Thanks everyone

    Kurt
     
  2. smwilliamson

    smwilliamson
    Minister of Fire 2.
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    Dec 28, 2009
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    Loc:
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    Is there any carbon at the base of the burn pot? If the auger is feeding in x amount of pellets at a predetermined rate and the opening is obstructed, even by a little, you get noises.
     
  3. TheMightyMoe

    TheMightyMoe
    Minister of Fire 2.
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    Aug 2, 2012
    596
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    Loc:
    Fairbanks, Alaska.
    Check out my signature for some tips, it's pretty easy.

    Mine makes the clunk noise as well occasionally.

    You can scrape the carbon @ the burn pot / auger tip like smwilliamson suggested, see if it goes away.

    Pulling the whole auger isn't that bad, that'll let you clean up the bushing / check auger tightness / clean out auger chute.

    Make sure you vacuum out all those fines / small pellets that get stuck in the feed area.
     
  4. DOLLARBILL

    DOLLARBILL
    Feeling the Heat 2.
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    Dec 1, 2012
    280
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    Loc:
    Between Augusta and Lewiston Maine
    Mine also makes a clunk once in awhile But what it really makes me is nice and WARM ! Im not to worried about it ! Good Luck !
     
  5. mepellet

    mepellet
    Minister of Fire 2.
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    Aug 10, 2011
    2,141
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    Loc:
    Central ME
    Nothing new to add here other than that I also get a loud clunk every once in a while. I find it to be pellet dependent. Happened a lot when I burned 6 bags of GS. Only heard it a half dozen times or so this season with the MWP blend.
     
  6. P38X2

    P38X2
    Minister of Fire 2.
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    Mar 11, 2012
    1,670
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    Loc:
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    Sounds like pellets crunching to me. MWP, for me, are very quiet. My Orford softies are much more dense and will cause a bit more pellet snapage.

    If you're experiencing a regular rhythmic clunking, see my recent thread on Harman slide plate/actuator issues.
     
  7. kurthood

    kurthood
    Member 2.
    NULL
    

    Jan 27, 2011
    24
    3
    Loc:
    southern NH
    hey folks,

    thanks for the replies. Sounds like we are mosty in agreement on the pellet snappage causing the clunk. not a big deal.

    There is very little if any buildup at the base of the auger. I scrape it down really well with a painters chisel scraper before starting it up each time.

    Mighty moe, i will check out that post on pulling the auger and assembly to address the whining issue. Has anyone else found this whining of the feed motor to be an issue with harman stoves?
     

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