Hi All,

Lately my 2009 Alexia has been overheating. Has a 160 deg limit switch that pops, but FYI you can toast some connectors before 160 .
It's a single boiler machine, so it has two operating modes. Steam Mode uses a 135 deg Campini button thermostat, and Brew Mode uses a dial thermostat with temp bulb down in a well in the boiler similar to this pic. It is overheating in Brew Mode.


I figure I have an issue with either the thermostat or the switching relay (open to other ideas), but my question is:
How do I remove this temperature bulb?
This is where it is located. I'm sure this is an obvious question to many, but the nut on top is very stuck, so before potentially breaking something could someone explain how it is mounted in there? When the nut is loosened does the whole well come out? Or does it just allow access to the bulb?


Thanks!
James

My 2013 Alexia came with a Walow PID installed in the factory well. The temp probe slides out by pulling on the wire. Your copper probe maybe stuck. try some oil or lube in the well. Pull up and down on the copper probe, and lube it. I've never removed the well. Suspect some high strength tread seal keeps it leak free. Don't muck with it.
Good luck,
D.

I think it does sit in a thermowell, as it did in an Isomac Zaffiro. I suspect there are problems ahead if you try and remove it. If you want to keep the machine, it might be worth drilling and tapping a hole for a modern thermal probe and PID retrofit?

You can pull the old thermostat out by grabbing the copper capillary tube and simply pulling it out of the thermowell. From there, you can replace just the thermostat (https://www.chriscoffee.com/collections ... 5fb8&_ss=r) or if you want a project, you can upgrade to a PID driven machine by adding in a PID and a Relay. The threads for the thermowell match the threads for the temperature probe that the modern Alexia uses, so no need to drill and tap a new hole.