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På Home-Barista er jeg i en tråd stødt på dette, som lyder som en fin måde at justere trykket på. Jeg har endnu ikke selv prøvet det, men det agter jeg at gøre snart. Parret med denne tegning der viser kredsløbet i en Silvia, synes jeg det giver mening.
Unfortunately, the majority, if not all, of the PF\'s you can purchase with pressure gages are lacking a quality pressure gage. You would be MUCH BETTER off by building your own. Do a search on this site for \"pressure gage\" or \"portafilter gage\".
Alternatively,
Measure the flow in the return line using a pyrex cup while pumping with a blind filter. With a stop watch, time how long it takes to go from the 2 oz mark to the 6 oz mark or 4 oz to 8 oz etc, etc. You\'ll come up with 4 ounces in \"X\" seconds. \"X\" should be between 27 and 28 seconds. Adjust the OPV as necessary to get this time.
This will give you very close to 9.0 bar blind filter pressure and about 8.5 bar with a normal double-shot flow.
Alternatively,
Measure the flow in the return line using a pyrex cup while pumping with a blind filter. With a stop watch, time how long it takes to go from the 2 oz mark to the 6 oz mark or 4 oz to 8 oz etc, etc. You\'ll come up with 4 ounces in \"X\" seconds. \"X\" should be between 27 and 28 seconds. Adjust the OPV as necessary to get this time.
This will give you very close to 9.0 bar blind filter pressure and about 8.5 bar with a normal double-shot flow.
inch: - tror vist jeg har målt \"flour oz\" og ikke \"US fl. oz\"...jeg har målt ca. 1½ gange mere end det jeg skulle. Kan være jeg liiiige skal ind og skrue igen. Godt jeg markerede udgangspunktet.
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