Yeah. The deadly metal 3d printer thing is more like a joke than any real danger. Not only our company is installing in a well ventilated area but we also have a sensor that goes off on the entire building in case the O2 concentration goes bellow 18.5%(which is still safe). However according to the experts installing the printer, if by any chance Murphy's Law decide to work and you have simultaneously, ventilation power failure, sensor failure and uncontrolled Argon leakage and the O2 concentration goes bellow 16% you're as good as dead, because once you breathe the Argon in it seems you can't breathe it out. The chances of this happening are lower than me winning the lottery, but we all know printers attack when we expect the least.
As for the printer model, it's a EOSINT M (for metal, don't remember the exactly model number, but I have the feeling it's the same one you have. According to the sales company there are only two other places here in Japan that have this printer) and we are also getting the EOSINT FORMIGA (for polymer, also uses a CO2 laser but doesn't need Argon, BTW, based on the sample models they gave us this is by far the BEST plastic 3d printer I've seen in my life)