So, here are a few pictures. The machine has panels removed and all that.

Looks quite clean! You should have no trouble running from a bottle. That is how my Vetrano is set up, still waiting the plumb-in.

Thanks all. I'm getting this guy all cleaned up. I've also ordered a few parts including a new shower screen. The current one is filthy, and doesn't really seem cleanable. Basically, the screen seems permanently attached to a metal piece and between the screen and piece is a lots of gunk. In fact, it's 80% blocked. I cleaned it as best as I could with soap and water but the gunk is not really coming out. I've attached pics of this. I think I'll need to order a new one.




Attached is also two pictures of the grouphead. The first pic shows the input side of the grouphead, I removed a teflon disc and gasket to get at this area. It's pretty gunky and difficult to clean. I also noticed that the small hole that leads to the output does not seem to accept water freely. Now, keep in mind this is a working machine, is it possible that the output requires much more pressure, as it would see while working?



In the second picture is the output of the grouphead. I've spent a fair bit of time cleaning it, but it's still pretty gross. The gasket showing is still soft, but is basically baked on and a pain to get off. I've ordered a new one, but I think it's going to be an adventure to get the current one off! Also, in this picture, the 'channel' highlighted by the outer circle seems to drain directly to the pressure relief pipe directly to the tray. However, when I direct water into this pipe only 30% of it actually has water coming out, leading me to believe it's mostly clogged. Now, the inner circle seems to be the boiler output (and the other side of the mentioned input hole). However, water does not flow freely through from this to the other side. It could be that it needs more pressure perhaps?



So, overall, I still need to give this grouphead a good dunk in a strong solvent. That gunk is tough to get off, and I've scrubbed the heck out of it. The grouphead itself weighs about 12lbs or so

I paid $550 to a local highend restaurant and picked it up. The owner said a total of about 1500 shots went through the system in 3.5 years according to his records.

I'm a dummy. The hole in the middle is threaded for a screw! So, it seems that the default position for the solinoid is from output to the pressure release pipe.

Your shower screen looks better than when I pull apart my machine

Take a look at http://www.home-barista.com/espresso-ma...aning.html to see some of the gunk one can get rid of.

Urnex or similar and a good soak may help you.

You might also consider an ultrasonic cleaner -- I've got an iSonic from Amazon for well under $100 delivered that works wonders. http://www.amazon.com/gp/product/B003PWZRUS/

The seller should have given you a crash course on basic maintenance & usage. Also, a thorough cleaning before selling would have been a more responsible seller.

You may already know about these, but a Unic Diva came across Craigslist here, and well, I had to look.

I can't vouch for the business practices or prices of these sites, but they appear to have internal and wiring diagrams that may be of help for you:

http://www.partsguru.com/UNICRumbaparts.html
http://www.unicparts.com/