Espresso machine maintenance

Andreja Premium schematic with non-standard control box.
Andreja Premium schematic with non-standard control box.

While I plan out what I’m going to do regarding the intermittent control box behaviour in my espresso machine, I decided that it would be helpful to update the electrical schematic for it – especially since its using a non-standard control box.
The control box is actually one that is normally used in the Isomac Tea – a very similar machine to the Andreja Premium.
I figured that I should do some other maintenance on the machine – having received a few grouphead gaskets from Espresso Planet, I figured I would replace that first.  Last time it was replaced was a couple years ago, and it was a bear to remove, so I’m going to try and replace it  a little more frequently.
This was also a good time to clean the shower screen – which was quite plugged up.  Replacing the grouphead gasket more frequently will allow me to clean this more frequently as well.