That’s sound thinking on Kevin’s behalf. JP
> On Nov 24, 2021, at 4:30 PM, Kevin Maciunas <[email protected]> wrote: > > On 24/11/21 2:36 pm, billherbst wrote: >> Having replaced the pressure switch numerous times on both my old Brewtus II >> and now my Brewtus IV-R, I keep new replacements on hand. So, after letting >> the Brewtus cool down some, I swapped out the pressurestat in the machine >> and hooked up a new one. Easy-peasy, right? Wrong. >> >> Turning the Brewtus on again, the steam pressure rose to 1.2 and just kept >> going. So, if the pressure switch isn't the problem, what is? Why is the >> heating element in the steam boiler not shutting off? >> >> Having already had a problem last year with scale causing the refill valve >> to stick, I'm wondering if I have another malfunction due to hard water >> scale. Is that the likely culprit, or has something else failed? > > OK - I'd suggest you have scale blocking the pressure path to the switch... > I'd put money on blockage on the U shaped tube that goes up to the switch. > If the pressure continues to go up, the controller and the rest of the > gubbins have nothing to do with it. The pressure is 100% controlled by the > pstat. A new one exhibiting the same behaviour tells me the fault lies on > the pressure sensing side - the tube. You probably need to remove it and > see. Blowing through would be reasonably diagnostic (although a flap of > scale COULD be there and not show, I guess...). Where it attaches at the top > of the boiler is also in need of checking and I'd suspect it is the most > likely point of scale deposition (it's the hottest spot....). > > You probably have 2 good pstats and machine with a scale problem would be my > most likely suggestion.. > > Cheers > > /Kevin > > -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/brewtus/52ee81c7-5263-1f31-f7d2-3f66baacc82a%40gmail.com. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/brewtus/45C67BED-21F6-4D17-A04C-3C33C810C080%40gmail.com.
