OK, now I feel like an idiot. I had the thought this morning that I might disconnect the leads to the high-limit switch on the steam boiler and check it for continuity, or perhaps even see if the Brewtus would turn on and not trip the wall outlet ground fault breaker with the leads to the switch disconnected and taped up. So, I went into the kitchen to do this and — to my utter chagrin — discovered that one of the wires to the pressurestat hadn't been reconnected after I tested for continuity days ago. The NO (normally open) lead was sitting on top of the pressurestat, apparently grounded against the case (which was causing the short that tripped the wall outlet breaker). How could I possibly have forgotten to reconnect that wire??? (Don't ask...). I reconnected the wire and turned on the Brewtus. The steam boiler red light came right on, and the wall outlet ground fault breaker did not trip.
I stood in front of the machine as both boilers heated up. The steam boiler hit 1.3 bars and kept right on going, headed for 2.0 and a high-limit trip. Turning the pressurestat adjustment screw all the way in either direction had no effect at all on the runaway train, so it appears that the pressurestat is indeed broken. I assume that's what was indicated earlier when I checked the continuity. Both circuits (normally open and normally closed) had positive continuity, where I think one is supposed to be open (no continuity) and the other closed (continuity). Apparently, the pressurestat has gone south and died. I've now ordered another Jaeger pressurestat from chriscoffee (the only online source for the Jaeger, according to google), so now the wait begins for the part to arrive. Then I'll swap out the old dead pressurestat for the new one and — hopefully — be back in business. -- 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 https://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/d/optout.
