After a few attempts, I managed to get the machine dry. To do this, the two parts had to be replaced.
Was a stubborn story, the machine had to be opened 4 times before it worked.
Piston: ersatzteildirect.de/de/Krups-...
Piston housing: ersatzteildirect.de/de/Krups-...
Coffee spout: ersatzteildirect.de/de/Krups-...
1 мар 2023