Hi Demian. Put in a blind portafilter basket (no holes) or insert the rubber stopper that came with your machine. Pull the lever up, and see where the pressure winds up, then lower the lever. Turn the screw counterclockwise a bit, maybe half a turn, and pressurize again. Keep doing this until you get down to the pressure you're after. It's subtle, but if you just dial down to the desired pressure, the next cycle will be slightly different (usually too high for me) than what you are after.
If you happen to go too low, you can turn the screw clockwise while the pump is running until you hit your desired pressure. In other words, you need to release/rebuild pressure each time when decreasing pressure, but you can go straight to your desired pressure when increasing pressure. This also means that you could start off by turning the screw out a couple of turns, pressurize, dial it to 9, and be done with it. If you set it at 9 with a blind PF, your shots should pull at about 8.5. In any case, beware of running the pump too long. Take care, bmc "Faith will move mountains, but you'd better bring a shovel....." > From: EspressoJB <[EMAIL PROTECTED]> > Reply-To: <[email protected]> > Date: Tue, 7 Oct 2008 08:37:41 -0700 (PDT) > To: Brewtus <[email protected]> > Subject: Changing brew pressure > > > I search the archive and found lots about diagnosing brew pressure. I > just need to know how to lower the brew pressure on my Brewtus II. It > is brewing at 11 bar right now, and I would like to adjust it to 9 > bar. If someone can just point me to a post, I'd appreciate it. > > I know that I am going to be turning the screw behind the drip tray, > but do I do that while the pump is on? > > Thanks in advance. > > Demian > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Brewtus" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/brewtus?hl=en -~----------~----~----~----~------~----~------~--~---
