I have dial indicators, how did you set it up? I also am thinking about throwing it on a CMM machine at work so I can also check coaxiality of lower burr in relation to carrier threads but seems a little too complex for me I also wonder it it really matters because of the design of

Hey guys I'm new to roasting and have a question about my coffee roasting technique. I have only roasted a handful of times but each roast I do tastes underdeveloped and grassy. I prefer light roasted coffee. Here is a picture of my last roast. The beans are from Brazil. I have a 1.5 kg drum roaster. Do you think

Hey Alex, Welcome to HB! Have you verified there is still power on the outlet? If it's plugged into a GFCI/RCD, it is possible the outlet tripped and it simply needs to be reset. Do you have any indicators on the machine at all? Standby should be a slow blinking red light. If the outlet is good and the

Ok, so upon further investigation, I decided to bypass the HX by using the tube that goes from the water tap to the outlet spigot (as it was the longest tube) to connect the pump/opv outlet directly to the brew boiler. Gurgling and bubbles completely gone. Immediate water flows through the group head as soon as I press either

Yes. This is all true for the steam boiler. In the case of the heat exchanger in the steam boiler, there is no steam within. Since the heat exchanger circuit is totally flooded with water, as soon as the water begins expanding, the pressure skyrockets. The steam boiler pressure corresponds to a specific temperature that the heat exchanger

I'm not sure I follow your question. The Gagguino project is an open-source PID controller with oodles of extras, using the Arduino framework. Feed-forward control of the heating element, pressure control via phase modulation of the vibe pump, fancy displays and controls, etc... also, Gaggia classics or coffees or whatevers don't have pressurestats. They have thermostats with

I sent you PM you can give me a call to help you trouble shoot more sometime if you like. I am not sure have versed you are with electric and multimeter usage, but someone who is could see if you have power to the pump when a brew button is selected. Be careful you check the

Jim, I have some, send me a PM and I can email one to you. Eric

Also insure the power you are using is correct as far as 220 and if using a ground and neutral. I had someone hook up a 220 machine one time to 440 that will make smoke. Best wishes, take pictures when you find something

You've got it right. The preheat element is a heat exchanger tube. It's worth ordering an additional gasket and soaking the element in citric acid if it has a thick layer of scale on the steam side (or inside), but generally there will be no benefit to replacing it if it isn't somehow broken. I can check tomorrow to verify