I've been using a DeLonghi bean-to-cup machine for about a year and although it has a descale function, there is no dedicated cleaning/backflushing cycle. It also runs a short clean cycle through the "group head" when shutting down. I still have a lot of Puly cleaner left over from my Gaggia Classic days and I'm wondering if its possible to use this to clean all the coffee deposits from the machine as I'm sure this isn't done automatically. The machine is an Autentica ETAM 29.510.