Going to Look at a Used EFM 520 Today

Going to look at a used EFM 520 today

PostBy: smtm On: Sat Jan 22, 2011 8:51 am

Reconditioned unit.

Seems like a fairly simple boiler, anything particular that I should be looking for?

Last edited by smtm on Sat Apr 01, 2017 3:30 am, edited 2 times in total.
Reason: Moved topic to the EFM forum.
Stove/Furnace Model: EFM 520 Highboy

Re: Going to look at a used EFM 520 today

PostBy: CoalHeat On: Sat Jan 22, 2011 11:28 am

One item is the area where the DHW coil is installed, check for corrosion and pitting of the boiler surface, as well as the condition of the coil mounting studs.
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: Going to look at a used EFM 520 today

PostBy: Rob R. On: Sat Jan 22, 2011 12:12 pm

There are a few other threads like this if you look back through the EFM section. In short, the coil mounting area is usually what condemns a boiler. Check the base and boiler for excessive corrosion, general operation of the stoker, condition of the gooseneck bushing, augers/tubes, etc. Check the burner plates for cracks, motor for smooth operation, drive/check pawls for chips or rounding, and see if the cotter pin coupler is tight.

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