Normally you would obtain a suitable sized (VA ) single phase transformer from 2phases or a phase and neutral, if no 120vac was already present.
On installing the TFMR with a suitable primary and secondary fusing, 2 in the pri, and one in the secondary.
One side of the secondary would be taken to the earth GND at the cabinet service entry, this GND connection would then become the local neutral for the outlets.
The NFPA79 print shows how to set up the 120v N.
See transformer 1T.
Do you already have any kind of 120vac on the machine?