Tarm SoloPlus 40 Refractory Replacement

jebatty Posted By jebatty, Jun 23, 2017 at 6:31 AM

  1. jebatty

    jebatty
    Minister of Fire 2.
    NULL
    

    Jan 1, 2008
    5,430
    741
    Loc:
    Northern MN
    My Tarm made it through 10 full heating seasons before the the tunnel cracked and broke. I ordered a replacement tunnel, which comes as a kit including a replacement nozzle and connecting parts. The removal of the old, in pieces, was easy, as was installation of the new nozzle and tunnel. The nozzle, which just looks like a rectangular piece of refractory with a slot in it, actually is much more complicated. It has rows of small holes in it with air passages that connect with the secondary air supply, all of which then introduces secondary air directly into the slot as the hot gases from the primary combustion chamber pass through the slot. The result, of course, is the intense gasification secondary burn which swirls in the tunnel.

    There are other refractory components which were still in satisfactory condition and not replaced. One important lesson learned is not to let the nozzle deteriorate too much before replacement, as an overly worn nozzle can result in wear to other refractory parts. Fortunately, that did not happen with my Tarm.
     
    Chris Hoskin likes this.
  2. Fred61

    Fred61
    Minister of Fire 2.
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    Nov 26, 2008
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    That's exactly what I warned about after changing my nozzle. By protecting the upper lip with an overlay erosion still continues in the throat and could erode into the surrounding refractory.

    One other thing that came to mind after reading other's documented nozzle changes was using a jack to push the nozzle out of the refractory could result in damage to the refractory. I'm a proponent of "wiggling" VS brute force on anything I am dismantling. The smallest grain of sand wedged in the joint could break out a good chunk of refractory.
     
  3. chuck172

    chuck172
    Minister of Fire 2.
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    Apr 24, 2008
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    Jim, my setup is as old as yours. How much did Tarm soak you for the replacement parts if you don't mind me asking?
     
  4. jebatty

    jebatty
    Minister of Fire 2.
    NULL
    

    Jan 1, 2008
    5,430
    741
    Loc:
    Northern MN
    Total was $402.05 including shipping. I thought that was very reasonable. The refractory lasted for 10 heating seasons.
     

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