Rob R. wrote:Well, if you are ready to give the boiler away, you will have no shortage of takers.
Whatever your problem is, it is simple.
Have you ruled out oversized coal? Rocks?
Are the two auger pipes tightly and square ly fitted? If one is cut crooked, it will create a gap that the coal catches on.
Is your pot tube inserted the correct depth into the pot?
Is the pot auger in the correct position relative to the pot? If someone has cut the clutch shaft or used a different coupler, it can change the position of the auger. Pictures of the auger in the pot would help.
Scottscoaled wrote:Boy,,,,,,, it takes an awful lot to break one of those pins. Usually a rock. Or a piece of metal runs up the auger. I got one in a trade that had a 1/4-20 x 1.5" flathead screw going around in the auger. Did you take off the pot auger and make sure there was nothing happening there? Take it all apart. Put the pot auger and tube back together checking it as you go. You should be able to turn the auger with finger pressure on the end if every things good. If that is good, put the extension on with the tube and see if it still turns freely. One more question. What gauge is your extension tube? How thick is it?
Oh,, and if you are getting rid of that boiler, I want to be first in line.
Scottscoaled wrote:Well don't go getting rid of it for the wrong reason. There are not many machines out there that run as good as an EFM's do. There is probably just something that needs a little tweeking to give you the performance you need. Hang in there. When heating season is over we can go thru your machine and figure out what is wrong. Why do you start your fire with an aaxcetalene torch? There is a much easier way.
ben wrote:I had the same problems last fall constantly breaking sheer pins. My unit was installed in 2008. Is your coal dry?
My problem was the bin pipe was rusted and corroded in side causing grinding of the coal.
I use rice. I also had too much auger exposed. Since I corrected the exposed auger to 2.5 flights and replaced the bin pipe (cost $10.60)
My unit is running perfect! Be patient. These guys will help you on this forum. I was able to fix this problem myself and I am not a plumber or anything close to being handy to fix things.
I would try getting some dry bagged rice.
CoalHeat wrote:If there are no issues with the feed system-all parts are in good condition and properly assembled then it could very well be stones in the coal or as P said buck that is oversized. I tried buck but don't use it any longer, went back to rice. I see no advantage using buck size over rice, especially since the EFM is designed for rice. The sounds from the auger pipe are noticeably louder on buck then rice, that's telling me it's working harder to feed the coal.
Why not get a few hundred pounds of rice and run that through the boiler and see if the shear pin issue stops.
windyhill4.2 wrote:Everyone keeps pointing to steel or rocks caught in the auger..
I think it is the towel you threw..
It got tangled & wrapped tight in the tube..
That will be a blast to remove
davidmcbeth3 wrote:Reading the thread I don't see why the OP is running buck v. rice, the preferred and recommended size.
I would imagine that choosing a particle size distribution would have a major impact on equipment design. If they wanted to move buck around v. rice the design likely would have been different.