Wrong voltage rating

Hello. If the unit is rated 460v, 3phase, the only way you can get it to meet your supply of 208v, 3phase, is:
a) have a transformer installed to make 460 from your supply by an electrician, or call your power company and see if 460 could be supplied to your building, but it would only be for that machine.
or
b) replace the heating elements for the 208v supply, have the pump motor checked to see if it will work on 208v, and a control transformer for the control circuit, as well as all the wiring related to the pump and heaters, as on 208v, they will draw more current than on 460.
so, can it be done? yes. Is the expense worth it? only you can answer that, However I would suggest that you resell that machine, and get the correct one from the start.

Hope that helps, and thank you.

no its not able to be converted that way you wouldn need to change your current to match that of the dishwasher

if you have 3phase motor then cant convert on 208VAC,but if motor is 1phase you can convert must have 220-250VAC.