EFM Stocker Motor Thermal Reset Kicking Off Happened Three
- stoker-man
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- Joined: Mon. Nov. 19, 2007 9:33 pm
- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
It is possible to over oil a motor. If the problem started after oiling the motor, I think you know what happened.
There are other causes, such as a high content of dust in the coal, especially wet coal. Did you just get a coal delivery? Use the crank to turn the worm by hand. Is there any strong resistance to turning?
Did you install new coal pipes recently? Is the feed worm more than 3-4 inches inside the coal bin? Is this a sudden problem? Is the dust cover installed on the motor?
Does the worm have any sharp edges? Scrape out the coal and look into the bottom of the pot. Is the voltage to the motor close to 120V?
It could also be a motor going bad.
There are other causes, such as a high content of dust in the coal, especially wet coal. Did you just get a coal delivery? Use the crank to turn the worm by hand. Is there any strong resistance to turning?
Did you install new coal pipes recently? Is the feed worm more than 3-4 inches inside the coal bin? Is this a sudden problem? Is the dust cover installed on the motor?
Does the worm have any sharp edges? Scrape out the coal and look into the bottom of the pot. Is the voltage to the motor close to 120V?
It could also be a motor going bad.
- stoker-man
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- Joined: Mon. Nov. 19, 2007 9:33 pm
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- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
Try turning the auger by hand. Have you been oiling the housing of the gear drive assembly and connecting rod? 3 oil ports in all. How old is the motor?
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I would say at 24 years an investment in a spare would be a good bet after you have verified the items suggested by stoker-man. That way you could install the new one and remove the old one for disassembly cleaning and testing to make sure it is good. Your local electric motor rebuilder or supply house should be able to test the old one to see if it is a viable spare unit. Remember units never fail when you don't need them.
- stoker-man
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- Joined: Mon. Nov. 19, 2007 9:33 pm
- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
I'll take pictures of the lube holes today and post them later this evening
- stoker-man
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- Posts: 2071
- Joined: Mon. Nov. 19, 2007 9:33 pm
- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
Here are the 3 oil ports. Two are in the connecting rod and one is in the clutch assembly. Add a drop to each end of the connecting rod, a few times a year and a few drops in the clutch assembly. In the top picture, the oil port is located in the center, to the left of the gear and also on the right bottom side at the top of the connecting rod.
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- stoker-man
- Verified Business Rep.
- Posts: 2071
- Joined: Mon. Nov. 19, 2007 9:33 pm
- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
Also, did you check the oil level in the oil pan and find it to be 3/8" above the bottom of the gear teeth?
- stoker-man
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- Posts: 2071
- Joined: Mon. Nov. 19, 2007 9:33 pm
- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
yes, your motor owes you nothing. Order a motor from Grainger. It's an AO Smith, Grainger part # 4MAO ??, don't remember the last number, maybe 8 or 10. Be sure to install the dust cover, supplied with it. 1/8 HP.
Thanks for that info I called Grainger and they have an AOSmith #4MA1O 1/8 hp but He's calling it an oil burner motor
My local supplier has a 1/8hp marathon motor also calling it an oil burner motor neither one knows of a cover
Will either of these work???
My local supplier has a 1/8hp marathon motor also calling it an oil burner motor neither one knows of a cover
Will either of these work???
- stoker-man
- Verified Business Rep.
- Posts: 2071
- Joined: Mon. Nov. 19, 2007 9:33 pm
- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
The 4MA10 will have a cover inside the box.