To me it looks like a reach-in condensing unit being used as a vacuum pump or recovery machine. The freon tank in ice boggles my mind though. Why would you use ice? Unless he has a regular tank modified to recover. It sounds illegal that's for sure.
Minds are like parachutes. They only function when they are open.
Back when recovery first started, we made half a dozen of those "recovery" machines out of old Coca-Cola vending machine condensing units....The local distributor let us have all of them we wanted from their boneyard.
It sure beat paying what the supply houses were getting for those ridiculous RRU30 POS jokes.
We also took old refrigerant bottles that had the check valves, and drilled holes in them, and silver-soldered fittings into them to use for "out and back" recovery jobs.
Nowadays, machines are good, and reasonably priced....and most supply houses have plenty of "real" recovery bottles at reasonable prices as well....but go back about 15 years, and it was a joke....stupid money for junk.....so, some of us found ways to get by.