Melted pot and auger wear

Melted pot and auger wear

PostBy: daluds On: Mon May 23, 2011 8:36 pm

It looks like I may have melted my pot? Is this due to the draft inducer without enough on time on timer? Does the auger need replacing?
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daluds
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice
Stove/Furnace Make: EMF
Stove/Furnace Model: DF-520

Re: Melted pot and auger wear

PostBy: stoker-man On: Tue May 24, 2011 5:36 am

The pot looks OK to me. Clean out all the holes with an ice pick.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Melted pot and auger wear

PostBy: Rob R. On: Tue May 24, 2011 5:53 am

I don't see anything wrong with the pot other than the plugged air holes. Did you ever let the stoker run out of coal?

As for the auger, it it tough to tell by the picture, but it looks slightly curved at the far end. Maybe it is just the picture?
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: Melted pot and auger wear

PostBy: Wood'nCoal On: Tue May 24, 2011 6:09 pm

Something looks funky on the side of the pot that faces the stoker, hard to see in the photos.
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Melted pot and auger wear

PostBy: Scottscoaled On: Tue May 24, 2011 8:42 pm

Are you saying you run your draft inducer all the time???????
Scottscoaled
 
Stoker Coal Boiler: EFM 520x4, 700. Van Wert 1200.
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: Melted pot and auger wear

PostBy: whistlenut On: Tue May 24, 2011 8:49 pm

Something got reallllly warm in that pot. Cast is toughest material that is affordable, but you sure challenged it!

This goes back to the bent feed tube and bent auger issue from some time ago......pay it forward, and watch it closely next time. :idea: :!:
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: Melted pot and auger wear

PostBy: Berlin On: Tue May 24, 2011 9:06 pm

The warped area just below the tuyeres is a common result of excessive draft when not stoking. It can also be a result of excessive air from the stoker blower. On EFM's without a sealed hopper, excessive stoker air can lead to backflow of fire down the screw, but you'll usually notice a bad sulfur smell while operating. Why are you using a draft inducer? if you need it for poor draft, you have two options, fix your chimney or wire it to only come on with the stoker motor. Also, a barometric damper properly adjusted should have prevented this draft inducer or not.
Berlin
 
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal

Re: Melted pot and auger wear

PostBy: daluds On: Thu May 26, 2011 9:15 pm

Humm... So I changed the damper to -0.04 draft. I have been running the AD-1 all the time to keep the fire on. So how bad did I mess the pot up? I did find the paw was missing most of the teeth on the down stroke since it was gummed up so limited coal was being feed into the pot. Not sure how long it was running this way since I have to take the cover off to check. Also had a hole in the upper auger pipe from rust for a while dumping coal into the ash pan. I cleaned the paw and cleaned out all the holes. So did the excessive heat cause the squeaking where the auger rod goes out the pot to the gears?

Any, I am having fun with this coal boiler. Its a great hobby! I saved a ton of money last winter which is a bonus too.

Thanks,

Dave
daluds
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice
Stove/Furnace Make: EMF
Stove/Furnace Model: DF-520

Re: Melted pot and auger wear

PostBy: wlape3 On: Fri May 27, 2011 8:59 am

I have an Alaska 140 auger with an identical design. My pot looks pretty much the same as yours after four seasons of use. Just clean it up and put it back in. Also, use a stiff brush on the inside of the auger tube. There should be some small holes at the end which allow for moisture from wet coal to escape. This will help clear these out.
wlape3
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: 140 auger, forced hot air

Re: Melted pot and auger wear

PostBy: coal berner On: Tue Aug 09, 2011 10:48 pm

wlape3 wrote:I have an Alaska 140 auger with an identical design. My pot looks pretty much the same as yours after four seasons of use. Just clean it up and put it back in. Also, use a stiff brush on the inside of the auger tube. There should be some small holes at the end which allow for moisture from wet coal to escape. This will help clear these out.

They are gas holes in the auger tube not for moisture from wet coal they should be facing up on towards top of pot
to burn off extra gas from coal burning well your Alaska should look like a efm being it was a efm design that was copied
by Alaska
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: Melted pot and auger wear

PostBy: blrman07 On: Wed Aug 10, 2011 7:16 am

Any, I am having fun with this coal boiler. Its a great hobby! I saved a ton of money last winter which is a bonus too.



This might be part of the problem. To you it's a hobby. To others it's a necessity and a way of life.
blrman07
 
Hand Fed Coal Boiler: Bucket a Day
Hand Fed Coal Stove: installing a VC 2310
Coal Size/Type: Pea/Nut/Wood in the VC and anything that will fit in the Bucket a Day. It's not fussy.

Re: Melted pot and auger wear

PostBy: stoker-man On: Wed Aug 10, 2011 3:38 pm

It wasn't exactly copied by Alaska. Back in the early 70s, when stoker production was almost extinct, an engineer (I think) asked to take the design to Alaska, or may even have worked for Alaska, and nobody cared at the time. It was before Rich's time, so it would take a real old timer at efm to know the whole story. I heard the story firsthand from an old timer, but it was years ago.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Melted pot and auger wear

PostBy: coal berner On: Wed Aug 10, 2011 7:28 pm

stoker-man wrote:It wasn't exactly copied by Alaska. Back in the early 70s, when stoker production was almost extinct, an engineer (I think) asked to take the design to Alaska, or may even have worked for Alaska, and nobody cared at the time. It was before Rich's time, so it would take a real old timer at efm to know the whole story. I heard the story firsthand from an old timer, but it was years ago.

It was a ex employee that took the blue prints/plans designs to Alaska and they used them & made it.
EFM did not care at that point .

I was told that by a guy that was a efm dealer from 1953 to 1983 he to has a lot of old papers and prints from efm
when they decided to clean house back in the 70s he got alot of paper work and plans .
You also told me the same story back in 07 when I first ment you.
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520