Cimbali's are designed to run on single or 3 phase. If you are working with single phase you just have to wire the plug differently. The most common plug configuration is Black and Red wired together - L1, Orange - Beige (also can be white)- L2, and green is ground.
Usually on the left side of the machine on the inner panel will have a wiring diagram. To help you with getting the plug right. You will also have to check your voltage and make the adjustment on the machine as well. There is a wire that can be set at 200V, 220V, and 240V.
Why should there be a disclaimer? Cimbali equipment has been able to run single and 3 phase for 20+ years. It is all on how the electrical switch on/off switch is wired. The only true problem that can really screw things up is if you don't set the power settings. Cimbali's use a transformer to run multiple voltages 0, 3, 5, 12, 24, 200, 220, and 240 volts. So you have to take a multimeter and test the line voltage. So if you have 208V you set it to 200V if you get 235 you set it to 240. So on and so forth. Otherwise the long term effect of over voltage or under voltage will wear out some electronics.
The top picture the wires on the electrical cord are all separated, none are connected together. The heating element - R,S,T the wires go straight up just like the middle picture. The bottom picture the heating element wires U,V,W go straight down much like the top. You most likely won't have to fool around with changing the element wires.
For the most part remove the drain pan. Use a number 4 metric alan wrench and remove the 2 screws holding down the lid over the electrical box. You should now see the electrical switch. If you look at the diagram it shows that the switch should have one big jumper that crosses the electrical leads on the switch. To see what I mean look at the middle and the top diagram and you should see breaks in the white line. When you look at you switch and you see metal tabs jumping all the screw connectors then you are already setup for single phase.
If this is the case wire your plug red-black, orange-white, and green is ground.