I recently came into a machine called "La Romana Automatica" similar to your club machine but haven't had a chance to fiddle with.
I have the same Zacconi shaped group but figured it was an earlier thermosyphon design. I think my machine was built in the early sixties.
Are you sure there is only one connection to your group? I haven't had the cowling off yet.
I am considering swapping the group with that of an Elektra Leva to have easier access for maintenance and easier sourcing of parts.
How is the coffee from your machine? Which Zacconi piston seals do you use? Do Ponte Vecchio baskets work?
The grouphead looks like a 49mm. The machine came with a portafilter that looks like it takes a 45mm basket, but no basket. I only pressurized her once and the pressure cutoff swing is between 1.3 and 1.4 kg/cm of mercury as per the gauge. This higher than usual boiler pressure is why I figured it uses a thermosyphon.
Thanks for any info.
That certainly looks like the same machine. I think it only has one connection. I haven't taken it apart, but there is a photo posted on a German discussion board clearly showing one connection. Unfortunately I'm not allowed to post it here since it's not my picture.
Moreover, when taking off the case, there seems to only be one connection to the group.
As for the servicing, I'm hoping that this tool will be of use when it's time: Ponte Vecchio Lusso piston removal tool
Currently my group is in good condition so I won't open it up. Spare parts seem to be available. There is apparently a guy on ebay who has gaskets. I don't have the username here, but could check if you're interested.
My group is definitely a 45mm one. As far as I know the portafilters and baskets are the same as PV.
So far I've had a bit of trouble with the coffee. I believe most of it is caused by too low group temperatures (pressurestat set to maybe 1.1 to 1.2 bar). Other smaller issues are probably related to inexperience with this machine. I haven't had it for a long time at all so I'm still investigating.
Please keep us posted if you learn something new about it or make modifications.