Bezzera BZ10 keeps tripping thermal safety device

#1: Post by **sllo** » January 18th, 2023, 9:41 am

Hello,
I have a Bezzera BZ10 and it keeps tripping the thermal safety device ( part number: 7634819)
What can cause this? What shall I look for to fix this?

Thanks
Solon

#2: Post by **hankbates** » January 18th, 2023, 11:38 am

First, make sure your level control is working, and that all wires on the device are well connected.
https://www.cafeparts.com/Contact-Therm ... mAQAvD_BwE

January 19th, 2023, 5:41 am

Thanks for the reply
I noticed that when I switch it on, it gets the boiler to the set pressure (1.3 bars) but when the pressure drops and it is supposed to kick in the element to bring it back to the desired pressure it keeps tripping the thermal safety device ( part number: 7634819)

#4: Post by **Flitzgordon** » January 19th, 2023, 9:46 am

Interesting issue.

After reaching the desired pressure, detected by the pressurestat.
It should cut power to the heating element from the power relay.