Auger Grinding coal since new coal delivery

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AndyAP350
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Stoker Coal Boiler: Efm ap350
Coal Size/Type: Rice
Other Heating: None

Post by AndyAP350 » Sat. Jan. 16, 2021 9:25 am

EFM AP350 with S15 auger. Received 4 ton of coal and broke a shear pin about 2 weeks later. I attributed it to the coal being wet. Coal is now dry. I cannot go a day without breaking a pin. It grinds then binds it up. Inside of the extension tube feels like the surface of the clading on my Avalanche. Time to change? There is no rust inside. Is this forum I noticed everyone puts the tubes together in the coupling. This one was installed with a gap under the coupling like the EFM instuctions show. Tubes end on a ridge inside the coupling with a 4" gap. Coal dealer assembled this way when the auger replaced. Looking for suggestions before I figure out and shovel to get the tube out with the coal in the bin.

 
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Rob R.
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Post by Rob R. » Sat. Jan. 16, 2021 9:38 am

The tubes have to be right against each other in the coupling. Fix that and see how much auger you have sticking into the coal...should be about 2.5 auger flights.

 
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StokerDon
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Stoker Coal Boiler: Gentleman Janitor GJ-5, Van Wert VA-600, Axeman Anderson130 X3.
Hand Fed Coal Furnace: Harman SF3500 reduced down to 3 grates connected to its own plenum
Coal Size/Type: Rice, Chestnut and whatever will fit through the door on the Harman
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Post by StokerDon » Sat. Jan. 16, 2021 10:27 am

Like Rob said, that 4" gap between the pipes is going to cause big problems. They should be completly butted up against each other with no gap. The whole coal feed system from the bin, to the fire pot should not have any edges that stick out into the coal flow.

From the manual.
EFMbinAuger.PNG
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-Don


 
AndyAP350
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Stoker Coal Boiler: Efm ap350
Coal Size/Type: Rice
Other Heating: None

Post by AndyAP350 » Sat. Jan. 16, 2021 10:32 am

I did that. Need to see what happens. It is an EFM part. Original efm manual shows it the same way as installed. Just curious why they show this and the manual is different.
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StokerDon
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Posts: 7486
Joined: Mon. Nov. 11, 2013 11:17 am
Location: PA, Southern York County!
Stoker Coal Boiler: Gentleman Janitor GJ-5, Van Wert VA-600, Axeman Anderson130 X3.
Hand Fed Coal Furnace: Harman SF3500 reduced down to 3 grates connected to its own plenum
Coal Size/Type: Rice, Chestnut and whatever will fit through the door on the Harman
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Post by StokerDon » Sat. Jan. 16, 2021 10:42 am

I'm not sure why it would be different but what you have posted is from a parts manual. The picture that I posted is from the installation manual. It is possible that parts suppliers don't need to know how something is installed.

-Don

 
AndyAP350
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Stoker Coal Boiler: Efm ap350
Coal Size/Type: Rice
Other Heating: None

Post by AndyAP350 » Sat. Jan. 16, 2021 11:34 am

I'll believe your manual. You are correct it is not an installation manual. Look where parts catalog is from. Part numbers do not match anymore. I do not have a installation manual for the 350. Have older sales stuff and an owners manual. Boiler and stoker are from 1962. Coupling was put on by my coal dealer when I replaced the burner plates, augers, and pipes a few years ago. All were original except for the pipe into the bin. It has been working like that for about 3 years.
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