- Edited
chlorox I think the only situation where one could be in danger for any lever is if one pulls down the lever of any machine out there on an empty portafilter - the one big no no of spring lever practice.
Another situation that happened to me a few times with the Izzo until I found the cause - group seal drying out to be rock hard causing portafilter to unlock during extraction. No damage though beyond a broken cup once. I don’t expect it to be an issue with the Nurri though as the quick warmup doesn’t mean 16 hours of heat per day like the Izzo had (plus maybe silicone standard?)