Aaron, if you are a novice, you are gifted my friend!!! I did the off tests, see results below - I believe the culprit in red. would this be just a case of ordering the part and dropping it in? I have the machine open..any other parts you recommend to test at this point or proceed with confidence? Thank god the elements looked good - replacing them felt like quite an ambitious team based effort haha
Off tests: Multi meter in resistance mode Check temp switches - get a low number near 0? If large or no reading -> problem Check continuity Steam boiler - got low number + got continuity Brew boiler - no number (infinity) and *no continuity* Unplug heating element (??) and check resistance across both. 120V/2000W resistance at 7 to 8ohms Steam boiler resistance: 13 to 14 ohms Brew boiler resistance: 13 ohms On Monday, August 10, 2020 at 5:28:17 AM UTC-4, OzAaron wrote: > > Wow. Lots of questions. > > I've got clip in leads for my multimeter, so I can clip them on and > operate the machine safety without risk of electric shock. If you can't do > it with your hands off, it is probably a bit risky. > > If you want to do the safe stuff first, with the machine unplugged, put > your mutimeter into ohms or resistance mode. > > Test between the 2 terminals of your temperature cut off switches (one on > each boiler). You should get a low number near 0. Large numbers or no > reading at all would indicate an issue. > > Unplug each element (both terminals) and measure the resistance across > them. For 120V/2000W you should get around 7 or 8 ohms. I'm not sure if > that's the standard wattage for North American units or not, if it is > lower, you will get a larger number. I'd expect it would be no more than 30 > ohms though. Any significant number above that would be bad. Note that both > elements should be about the same. > > That kind of tests the element and cut out switch: although strange things > can happen when things get power and/or when they warm up (hence why > testing with power is sometimes necessary to find issues). > > If the machine's steam lamp is turning on and off at 1-1.4bar and > continuing to cycle like that, I imagine the PSAT is OK. will really need > to power it up to test the PSAT. Perhaps try the unpowered things first, > then we can think about how to test with power applied. > > As for how to test the PSAT... Looking at mine, the PSAT is configured > with the top terminal common, middle terminal NO and bottom terminal NC. To > test while power is on, I'd put my multimeter to a suitable range for > 120VAC, then put one of my multimeter leads to neutral (blue on the power > switch) and test the NC and NO pins of the PSAT. The top common pin should > always have power. The middle NO pin should have power when the steam > boiler is off (brew boiler should be getting power at that point). Bottom > terminal should have power when steam boiler is operating. > > Good luck and stay safe (please only work on a powered device if you know > what you are doing). > > > > On Mon, 10 Aug 2020, 3:46 pm Rizwan Naveed, <[email protected] > <javascript:>> wrote: > >> Thank you and bless your soul for your thoughts! >> >> I think you’re on to something. So if I understand correctly - next step >> is to check heating elements. >> >> How can I do this with a multimeter? Machine on, or off? No level of >> detail will be too dumb for me, I literally just tried today to understand >> how to use a multimeter so really appreciate even a quick thought! >> >> Given that I was getting 120V between the bottom red connector on pstat >> and the top metal part of brew boiler, couldn’t we conclude that Pstat is >> fine? >> >> I also strongly suspect the over temp protectors. Do you know how to test >> them? >> >> Tbh I also want to replace almost preemptively the over temp protectors >> and the Pstat - did you look into what replacements go in by any chance? >> >> Sorry for questions I really fell in love with this machine and now my >> baby is broken :) >> >> -- >> 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] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/brewtus/c435ad5f-d46f-4af1-a53a-a6f862803a2do%40googlegroups.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/ecc6b2c2-ebce-4edd-abe4-8fea11bac95eo%40googlegroups.com.
