Does E61 detergent backflush also clean the mushroom/screen

by **CSME9** on Sun Nov 16, 2008 11:09 pm

When doing a e-61 cafiza backflush does that also clean the mushroom/screen.

I also notice my espresso shots are hotter afterwards or could it be due to soaking the portafilter/handle in cafiza which is removing a layer of coffee crud/oils.

Thanks, WS

by **cannonfodder** on Mon Nov 17, 2008 12:12 am

No, it does not clean the mushroom. That is part of the heat exchanger/thermosiphon system, to clean it you would need to do a descale. The detergent flush cleans the shower screen, dispersion disk above the screen and the waste water path. Not sure why your group would run hot after a backflush. The group may be a bit warmer than usual from all the water that got flushed through.


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