stefano65 wrote:All I can recommend on this one is:
IF you think that not using espresso detergent is a good idea and backflush without it,
try for few weeks then open the group,
or simply remove the showerscreen and see,
Stefano, I think that the conversation has kinda drifted to 'is it useful to backflush without detergent between detergent backflushes'. I think that you're right, (IMHO) that using no detergent ever is probably a bad thing.
So, the new question would be; would a clear water back flush between detergent back flushes be better for a machine than doing nothing between detergent cleanings?
I personally think that the answer is 'yes'. Since the question came up (and I think someone suggested somewhere else that all this clear water back flush and rinse and wiggle are bunk without any scientific background) I've been pulling half my shots on the left group, and the other half on the right group. On one side, I've been doing a PF wiggle after every shot, and a clear water back flush at the last shot of the day. On the other group, just a clear water flush into the drip tray after every shot. This is, of course, after a really good cleaning of both groups with detergent, scrubbing, disassembly and new gaskets.
Which group do you think got which treatment?


I'm pretty comfortable with my regimen.