When you switch out the vibe for a rotary pump you still keep the OPV and it is located on the outlet of the rotary pump. When with the rotary pump the OPV is just a safty relief that will open up if the boiler overheats. We set them to open at 11 bar. The pump/brew pressure is set at the internal bypass on the pump and we se that at 9 bar.
Hope this help. Todd Salman Whole Latte Love On Tue, Feb 19, 2013 at 9:28 PM, Benjamin McCafferty <[email protected]>wrote: > Hmmm...it has been a while since I switched my vibe pump out for rotary, > but for whatever reason I was thinking the OPV is eliminated when you go > rotary. I'm sure someone else will chime in here...but my original OPV is > no longer behind the adjustment hole behind the drip tray. Perhaps in > another location internally. On the vibe models, the OPV is how the brew > pressure is set. I could see it being a safety thing on the rotary pump > models? > > Yes, brew pressure and pump pressure are the same thing. > > bmc > > Sent from my iPad > > On Feb 19, 2013, at 14:10, brian <[email protected]> wrote: > > Thanks for the reply. > > From the IV manual posted last month I see on page 9 and 10 information > about adjusting the pump pressure, OPV and brew pressure. When it refers > to pump pressure, is that the same as the brew pressure adjustment or > something different? It doesn't appear to be different based on the > pictures. The incoming water pressure will vary significantly from 40 PSI > which is how they set it when it ships (per the top of page 9). > > From the manual at page 9: > > *Rotary Pump Machines* > * > * > The Brewtus IV-R is designed to be used with a water line connection. The > pump will work fine off any standard incoming water pressure. The water > line can be dropped into a water container, if you like, but you must be > careful not to let it run dry as it could damage the pump. Before we ship > the machines, we set the brew pressure to 9 Bars at an incoming pressure of > 40 PISG. If the incoming pressure is higher than 40 PSIG, the brew pressure > may have to be adjusted down; if it is lower, the pressure may have to be > adjusted up. > > *Rotary Pump* > > *CAUTION: Adjusting the pump pressure can be time consuming and since it > is very close to the electrical connection on the boiler, we recommend that > all adjustment are done when the machine is not plugged in.* > > Note: We recommend that the Rotary pump be set to 9 Bars with the back > flush disc in place. The OPV should be set to open at 11 Bars. > > > *Adjusting the Pump Pressure:* Adjust the pump pressure by loosening the > lock nut then turning the adjustment screw. Turn the adjustment screw > clockwise to raise the pressure and counter clockwise to lower the pressure. > > *Setting the OPV:* We set this before your machine has shipped. To set > the OPV, you will have to run the machine with the backflush disc in place. > First, raise the brew pressure to 11 Bars. Then, with the pump running, > turn the adjustment screw on the OPV so that it just starts to let water > flow out of the overflow tube. It is now set to open at 11 Bars. > > *Setting the Brew Pressure:* Turn the adjustment screw counter clockwise > to lower the pressure and clockwise to raise it. Between adjustments, lower > the lever on the brew group to release the pressure. Make your adjustment > with the machine unplugged and then plug it in and test your setting. When > you have the pressure adjusted, tighten the lock while holding the > adjustment screw in place or it may turn and change the setting. > > On Monday, February 18, 2013 7:48:02 PM UTC-7, bmacpiper wrote: >> >> I run my steam boiler at 1.45 bar (set that way from WLL when I got it), >> and I'd recommend 9 bar against a backflush disc, which will end up being >> about 8.5 bar when pulling a shot. >> >> Enjoy the new machine! >> bmc >> >> Sent from my iPad >> >> On Feb 18, 2013, at 18:35, brian <[email protected]> wrote: >> >> > I live in Colorado and new to the group. I have a PID'd Gaggia Classic >> that I've been using for a couple months and decided I wanted something >> more. The IV-R should be here Thursday and I'm real excited. >> > >> > I've got the plumbing all ready to go with a 3/8" coming from the >> basement with a shutoff at the tap and near the machine. I've also got a >> pressure regulator near the machine. I've got a whole house softener and >> the water tastes great from the tap so I think I'm good there. I'm going >> to double check the hardness and PH just so I know. I have been using a >> carbon filter for the Gaggia. >> > >> > I'm reading through the forum but thought I'd post and see if anyone >> has suggestions for things I should pay attention to. Reading through the >> manual I see it might be wise to adjust the pressures on the machine once I >> dial in the pressure regulator since it was set for an incoming pressure of >> 40 psi.. Any suggestions on those settings? >> > >> > Thanks for any help! >> > >> > -- >> > 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 brewtus+u...@**googlegroups.com. >> > To post to this group, send email to [email protected]. >> > Visit this group at >> > http://groups.google.com/**group/brewtus?hl=en<http://groups.google.com/group/brewtus?hl=en>. >> >> > For more options, visit >> > https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out>. >> >> > >> > >> > -- > 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?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > > -- > 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?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- You received this message because you are subscribed to the Google Groups "Brewtus" group. 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