Restored DF520 is running

Re: Restored DF520 is running

PostBy: Rob R. On: Tue Jan 24, 2017 9:57 am

Homemade feed adjuster?

Can you post a picture of this? Also, please post a picture of the crank on the gearbox.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: Restored DF520 is running

PostBy: Gpmorin On: Tue Jan 24, 2017 4:48 pm

windyhill4.2 wrote:http://nepacrossroads.com/about34358.html I posted this link in case you are interested in seeing an EFM520 that works hard during the heating season. You might also consider the insulation as i did mine,depends how much heat you want/need in your basement & whether you need covers to suit your design tastes.
I am heating 2 houses + DHW for both houses & my 30 x 40 repair shop. I am currently on 6 teeth/6 air & have used 7/7 when temps drop below zero +windy.
I think it is likely that 4/4 will work for you,nothing wrong with the stoker running for a longer period of time,it just has to be set high enough to handle the most demanding part of the 24 hr cycle.\
Rob is good at explaining the setting /cycle time so that it makes sense.


I checked out your posts a while back - very cool.

I've set the feed rate back to 4. It's not that cold here now. It's hanging in the 30s & 40s, and just below freezing at night. I'll keep a watch on it.

FYI - it looks like a 1959 vintage boiler - here's the back plate info:

Fitzgibbons
MAX WP STEAM 15LB
MAX WP WATER 30LB
1959 HSB A37660

Gpm
Gpmorin
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: La Pitite Godin
Coal Size/Type: Rice/Nut

Re: Restored DF520 is running

PostBy: StokerDon On: Tue Jan 24, 2017 8:06 pm

G,

I'm no EFM expert, but I think that means the boiler is a 1959 vintage. They didn't come out with the Dual Fuel (DF) until 1980.

It's possible your stoker is from an earlier unit. I don't know the specifics but the early S-20 and S-15 stokers were different. Maybe that is why you had to make pieces? The blower housing should have a data plate on it. Get the serial number off the plate and look it up in this thread. then you will know what year the stoker was made.
Dating S-15, S-20, S-22, S-30, S-35, S-45 stokers

Sounds like 4 teeth is not enough to heat your load. If heat calls take a long time and or the boiler temp is going down during long heat calls, the feed rate is to low. I would suggest bumping it up to 5 teeth, 4 air, then adjusting the air for a 2" ash ring during a long heat call.

-Don
StokerDon
 
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Re: Restored DF520 is running

PostBy: Rob R. On: Tue Jan 24, 2017 10:26 pm

Don, the age of the boiler is why I asked to see the close up pictures of those stoker parts. The 50's stokers had a slotted crank that was used to adjust the feed; rather than the slip collar on the drum gear like the later models.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: Restored DF520 is running

PostBy: CoalHeat On: Tue Jan 24, 2017 10:33 pm

Rob R. wrote:Don, the age of the boiler is why I asked to see the close up pictures of those stoker parts. The 50's stokers had a slotted crank that was used to adjust the feed; rather than the slip collar on the drum gear like the later models.


Correct!
CoalHeat
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Restored DF520 is running

PostBy: CoalHeat On: Tue Jan 24, 2017 10:34 pm

coalkirk wrote:Ha! That rumor is true. Don came over Saturday and we fired up my new to me EFM 520 S20 stoker. That burner is amazing. it's like a Pratt and Whitney engine! Harman is coming out Saturday and the EFM is going into the basement.


I guess you can't wait until off season. I understand why.
CoalHeat
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Restored DF520 is running

PostBy: Gpmorin On: Wed Jan 25, 2017 10:03 am

Here's the info from the tag on the stoker:

S20, s/n 83685

I looked in the reference pointed to by Don, and it looks like it was built in 7/59.

So - that explains my not knowing how to set the feed rate. And that led me to machining the shoulder on the casting, and a collar/gear cover arrangement to set the feed rate. I'm not sure how to set the feed rate without the fabricating I did... I'll poke around - if anyone can point me to that info, that would be great.

FYI - my settings are 4/4.5 now. Seems to be good. I'll continue to watch it, and observe the ash to see how things look.

Thanks for all the pointers here !

Gpm
Gpmorin
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: La Pitite Godin
Coal Size/Type: Rice/Nut

Re: Restored DF520 is running

PostBy: Rob R. On: Wed Jan 25, 2017 10:07 am

Just post a picture of the crank like I asked, then I can tell you if that can be used to adjust the feed rate.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: Restored DF520 is running

PostBy: Gpmorin On: Wed Jan 25, 2017 10:24 am

I did some poking around, and now understand the 'slotted crank'. I intend to remove my homemade gear cover and set the slotted crank for a 4 tooth rate.

This forum is great - I found a picture, the rest is simple.

Thanks !!!

Gpm
Gpmorin
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: La Pitite Godin
Coal Size/Type: Rice/Nut

Re: Restored DF520 is running

PostBy: Gpmorin On: Wed Jan 25, 2017 10:26 am

Rob R. wrote:Just post a picture of the crank like I asked, then I can tell you if that can be used to adjust the feed rate.


So it doesn't seem like I can simply insert a picture. I'll get the pics out on dropbox, and insert a link today. (or am I missing something?)

Gpm
Gpmorin
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: La Pitite Godin
Coal Size/Type: Rice/Nut

Re: Restored DF520 is running

PostBy: CoalHeat On: Wed Jan 25, 2017 11:23 am

I happen to have the slotted fitting on the gearbox as well as the adjustable ratchet on my EFM.
CoalHeat
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Restored DF520 is running

PostBy: StokerDon On: Wed Jan 25, 2017 7:41 pm

Gpmorin wrote:So it doesn't seem like I can simply insert a picture. I'll get the pics out on dropbox, and insert a link today. (or am I missing something?)

Click the "Upload attachment" tab below the dialog box that you type in. The click "Browse" to locate the picture on your computer. Then click the "Add the file" button. Once the picture finishes uploading, you can insert the picture anywhere in your text.

If you post a link to pictures at another site it's not likely that the address is permanent. Then your nice EFM thread here will have a hole in it and future readers will be scratching there heads trying to figure out how to adjust the feed rate of early EFM's.

-Don
StokerDon
 
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood