Groo, I would do some research on the model because some industrial units may not be capable of single phase.
I researched the model in question. The 3 phase and the single phase are supposed to be the same machine with a few different jumpers on the main board, a slight difference in the fan wiring and about a 15% lower rating on the single phase.
I only bid $155, so it won't be the end of the world if I am wrong, and it will be one heck of a deal if I am right. Maybe I should up my bit a little.