Yes the more I think about it the more it makes sense that the vibe pump takes a bit of time relative to a rotary to build or change pressure. That PDF is fantastic! Thanks so much for that.
Yes I think thats correct that its plumbed into the small spout beneath the grouphead. It's Tee'd into the deaerator valve so thats why there is a continuous drip coming from there. Tech support tells me that this is normal and to be expected. Mainly I need to know how fast the pressure should change when I adjust the OPV screw... Thanks again - all help/opinions ideas welcome! J On Thursday, May 21, 2015 at 9:57:25 AM UTC-7, Ryan Robold wrote: > > Hi J, > > I am also a new owner of an Expobar machine and recently did a pressure > adjustment on mine. I do have a rotary pump, but I can tell you that while > the pump is deadheaded(flush disk in place, and pump running) when I turn > the adjustment the pressure changes immediately. The pump should be > providing something like 15bar to the opv, and the opv is bleeding off the > excess to regulate the pressure to where you set it. > > On my machine there is no resivoir so the excess pressure comes out a > little down spout below the discharge of the group head. When I am brewing > a shot there is a continuous stream coming out there. On a machine with a > resivoir it may be plumbed back into the resivoir. > > This is a great reference that helped me better understand the operation > of these machines: > > http://www.home-barista.com/downloads/ExpobarParts01.pdf > > Hope that helps! > Ryan -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/d/optout.
