I have a Rancilio Silvia around 5 years old. After around a year, it stopped reliably producing dry steam. I have very hard water, but despite regular vinegar cleaning, cannot seem to get it to steam
I've also noticed that every time I pump espresso I now get a small leak from behind the drip tray area.
Coffee Makers & Espresso... - Rancilio - Silvia Espresso Machine
Answers & Comments
I work on industrial machines have done so for 15yrs
if your machine is anything like the prof rigs in terms of engineered design then what you are noticing is the pressure release valve working-letting any unused and pressure + water drain from the group head to a small plastic black box below the stainless housing panels/drip tray after extraction is complete.
What i describe should only happen after the shot stopped.
you should hear it and see it the water for about 2seconds after you stop the extraction manually/automatically