New to the machine so working things out and hoping it's running as should be. However when pulling a shot the needle flutters madly whilst building, then will do one of three things...
1 - Needle flutters a lot, builds throughout until reaching about 9bar, still fluttering a lot but shot pulls to duration set (by volumetric dose setting) and all seems ok.
2 - Needle builds as above, still fluttering a lot, but reaches 9bar then after a few seconds the noise it's making changes (could be just the sound of the needle) and needle doesn't flutter as much, kind of settling at 9bar, seems solid, shot ends at duration set.
3 - Needle builds as above, gets to around 9bar (no more) but sometimes not even this high, valve opens and pour ends way early before reaching the set dose amount.
So two questions really...
In scenario 1 & 2, what is making the needle settle from it not settling?
In scenario 3, what is happening mechanically to make the pour end earlier than what I have set the volumetric dose to and why?
Vivaldi Mini oddities
General Questions and Comments that fit no specific category.
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