cannonfodder wrote:I thoroughly overfill the boiler when I descale, water pumping out the steam wand for several seconds. When it heats I get water spitting out of the vacuum breaker valve. I put a towel around the breaker valve to soak up any spatter and keep another handy just in case it gets to wet.
You don't want water dripping off the boiler and onto the electronics. On my Isomac, the level box and circuits are under the boiler and behind a heat shield. Not the best design in my opinion.
i overfilled the boiler as well; i let the water come out of the water sensor hole, and when the boiler was filled, the vac breaker (?) and pressure relief valve(?) shot watery steam out of their relief holes as well. put the water level sensor back in, and let it sit for about 2 hours.
i kept the machine on since it held the heat nicely that way, but did cycle a LOT. i dont know if its b/c the panels were removed or b/c there was no steam 'headspace' to help it maintain equilibrium. i think im going to insulate the parts on it, not only for wire protection from the heat, but to help the thing from cycling so much. with such a small deadband (well, 1.5bar is tight to me!) it cycles too much, and i dont want electronics failing.
flushed it about 3 tankfulls of tap water, then drained the boiler and filled and flushed with my filtered water line.
all in all the process was uneventful; blueish water came out of the grouphead (flushed that as well), and out of hot water wand. weird thing was some black stuff came out of steam wand, maybe some milk that got sucked back in? i do run the steam quite a bit after i froth, but maybe some still manages to get lodged. im happy to see the machine run so rock solid with all the cycling i just put it through, thats certainly good news!
only ran 2 shots after cleaning to lube the machine up, all seems to be working well.