As far as the heating element that is reasonably clear as to how to wire it. Better pix and the remainder will be decipherable.

It will be possible to apply 220vAC single phase to each of the individual 3 phase legs as they are all set up to be 220v to neutral. If you can locate the single phase diagram that would confirm this as it appears there will be some minor wire swapping to get this setup properly.

The color code appears to follow this scheme
220vAC 3 phase neutral Ground
Brown Light Blue Yellow-Green
Black
Gray

Blk - Nero
Brn - Marrone
Gry - Grigo
Lt Blu - Azzurro
Ylo-Grn - Giallo-Verde

Gray does not show up on the drawing and that may indicate a slightly different color coding is in play.

If you look at just the element wiring the color code/function I posted above above does not logically work. The 2 elements should be 220VAC and the center connection between them tied to neutral.

As this dates from 1971 there may have been a different wire coding in force when it was manufactured.

Thank you very much for all the effort to explain how it works. I will colorize the diagram and make it easier to read. Fortunately, we have the diagram for single phase there too.

That is the diagram that you need,the single phase one.

Hi There, i got a original manual (manuale tecnico) from Faema to the E66, as a pdf. The copy quality is a little bit lousy and its of course in italian language. The E66 diplomatic is the more advanced machine, with this dosimeters . The E64 is the pure manual machine, lever to the right, water flows, lever to the left, water stops...
But how can i send it to you? or to this board?
greets
Klaus

Thank you Klaus, I sent you a dm.

So, long time no update. Not much done during the summer but the machine is already powder coated and we sent the other parts for chrome. Sourced almost everything I need locally! Not going to brag about the prices but I got everything for like 1/5th of the prices online... go figure.

I think I managed to wire it correctly (will see...) and polished all the copper to mirror. Clear coated it and hope it will stay shiny forever not that anyone will see it tho. Still haven't started assembling the groups but will get there pretty soon. I'm back on putting it together now and just looking for a Faema grinder to pair it with the machine. Probably MC one just for the looks. Just assembled the water inlet today with new everything. The water level glass came clear with no indications on it and had to paint the level markings. Here are some pictures.

I'll be keeping an eye on this post as it nears completion. I am always a sucker for Vintage Faema Machines!

-Ryan

Update: A bit of a drama lately, broke the main brass fitting to the heat exchanger. Seems like it was already cracked as I wasn't even using that much force there. A while ago when I took it apart I noticed a lot of PTE and even a gasket and it was still leaking. Anyway, got a new one fabricated as you can't really buy it - it's a 3/4 to 3/4 compression fitting. The new part turned out great and I met a new cool person.

Also, I refurbished another part that cannot be sourced - it's kind of a safety valve not sure how do you call it. Changed all the rubber sealings too.

P.S. Did anyone notice my mistake on the water inlet assembly? Completely forgot about the no-return valve.

Hi @skayda
Well done with your project mate!
Where are the pics of the final product?
I'll be going through the same process as you did.
Got 3 E64 (I think they are E64) - 1, 2 and 3 groups - that I need to refurbish, pics below.
Be great to hook up for a chat at some stage.
Cheers
Carlos