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Black water level probe
I aquired a Faema E61 Jubilé A2 last year. Before putting it into service, I completely restored it, including a thorough acid treatment of boiler, all pipes, connections, etc. Everything was flawless when put up for service in april 2020. Last week, it overfilled (and didn’t stop until water came out of the safety valve. The water level probe was black and had a rough surface. I cleaned it with steel wool back to shiny and smooth surface, and put it back last week. Yesterday I was told the same problem is back (I haven’t been with the machine for the second time yet).
I suspect an acid treatment of the boiler is needed. But why does this happen so “fast”? The machine has been constantly on since april 2020, but not so much in use because of closed restaurant for months at a time, but 1.5 year seems too short for this problem to occur.
Also, what could prevent this for the future?
I also notice line pressure is about 6-8 bars (we have ordered a reduction valve, but it hasn’t arrived yet). Not sure if this would be relevant.
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