Isomac Itala thermal fuse

#1: Post by **Er7** » September 18th, 2021, 1:34 pm

I got an used Isomac Itala espresso machine. Not sure why, but previous owner removed the the thermal fuse.
I have ordered one, found its place but not sure how it should be connected. There are no loose cables inside and I don't want to connect it wrong. Any suggestions? Thanks in advance.

#2: Post by **cafeIKE** » September 18th, 2021, 3:14 pm

Looks like thermal cutout is still there

What "thermal fuse" is missing? Thermistor on the pump?

September 18th, 2021, 4:13 pm

But what's that:

The isomac retailer said it should be installed..

#4: Post by **cafeIKE** » September 18th, 2021, 4:43 pm

Does the boiler heat?

This is a snip from a Zaffiro at site sponsor EspressoCare
It appears there is a fuse as well as the thermal breaker, which appears to be self resetting. The fuse is a safety against the breaker fail closed.

The fuse requires insulation and a clip to hold it to the boiler.

September 19th, 2021, 2:29 am

It stopped heating, and I think heating element has been burned.. Thanks for the picture, I guess I just have to get that clip and a screw to install that thermal brake. There is a screw hole on the top of boiler

#6: Post by **cafeIKE** » September 19th, 2021, 9:26 am

This wiring diagram for a Zaffiro might help.

If you don't have one, a VOM is essential. A set of clip leads as opposed to probes makes life easier.

When working with 220V, and using a probe to find a fault, using one clip lead and one probe allows you to keep one hand in your pocket.

September 19th, 2021, 10:03 am

cafeIKE wrote:When working with 220V, and using a probe to find a fault, using one clip lead and one probe allows you to keep one hand in your pocket.

Sage advice to not get fatally electrocuted when working with a live circuit.

Double check the temperature value of the thermal fuse against the original parts list or schematic!