Bushfiva
It's been a while since I had to do this sort of stuff. I took a woeful colour laser and assigned it to non-production duty and bought two very expensive machines to replace it - which subsequently malfunctioned.
As part of the transaction, though, we were given on-site support at any time we wanted it. Once they'd replaced them a few times with newer models and I'd made some death threats, we had a functioning site with redundancy. I must draw into question the wisdom of putting all one's eggs into one basket - but it's your show.
It might be worth your while to track down your salesweasel and obtain some after-sales support. Did you sign off on this? I suspect that you didn't.
SO