I believe i read it was a field conversionHere is the manual.
Check out the wiring diagram on pg 21.
It appears to me as though they do have a single phase wiring scheme..
Makes it a 45 amp unit vs a 26 amp on 3phase. I am not sure whether it is a field conversion or a factory made single phase version.
The wiring diagram (in the manual Oso posted)looks like it can be reconfigured easily. The wires labelled 9 and 12 connected to the L3 terminal would be moved to the L1 and L2 terminals respectively. They are not interchangeable - 9 goes to L1 and 12 goes to L2. It is unclear whether this would then operate properly on 240V or whether it would require a buck-boost transformer. The manual seems to suggest that this configuration would be for 240V, but shows the same power rating (10.8kW) at both voltages which would require different heating elements.
Yeah, I would. It's not rocket science, it's just rearranging some heating element wiring. I'd measure the current flow and see where it ends up. Even if it is 15% higher than normal due to the voltage increase, I'd probably just use it anyway. The chance of damaging it is low.and maybe destroying the heating elements?