r/profitec • u/smicycle • 18d ago
P400 pre-infusion issues
Hey gang. I've had my P400 for a little over a month and I've had some issues with consistency across my shots, and I think I may have found the culprit.
My grinder is a mignon specialita so let's say for now that isn't the issue.
I thought that the automatic pre-infusion on my P400 was meant to be gentle, that is hit 1-2 bar, maybe 4. Mine ramps up to 8. It doesn't really matter what grind setting I use (I have intentionally gone too coarse and see the same behavior, coffee just shoots out). I'm assuming this is then blowing the pucks apart when the chamber decompresses, just like it would at the end of a normal shot. Is this normal behavior for the pre-infusion function or is something up with my machine (it has always done this btw)?
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Central Oregon Latino Fest Canceled
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r/Bend
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10h ago
this is exactly the time we should be doing this kind of thing