Dear Carlo,

The word on Jobo is not good. I suggest you try and contact them directly. Here is the contact page but I know the information referring to the U.S. is incorrect.

http://www.jobo.com/web/Contact.171.0.html

I suppose you could try and find the distributor that serviced the company that used that particular unit.

Do you think you could fill it with water and record the steps as they go?

Neal