: Silvia thermostat problems ?
I found a neglected Silvia and am trying to make it reliable. After the machine has been on a while, it is likely to blow a lot of steam while brewing. I measured the temperature at the top of the boiler with a digital thermometer. I found that the brew thermostat keeps the heat on until the temp reaches about 120C and then allows it to cool to about 90C before closing again. The steam thermostat seems much more reasonable; opening at 140C (the nominal temp of the thermostat) and closing again at 110C.