The appliance should be marked with the correct voltage range, and the voltage applied must lie within this range. Otherwise it might be dangerous.
You can not change it. 440 volt is by design. However you run it with 220 single phase supply, but it would run far lower power.
No. The capacitor will short out and possibly explode. On the other hand, the 440 Volt Cap can be used in a 220 Volt circuit.
You Don't. 440volt 3-phase is actually 480 volts, taking a single phase gives 277Volts single phase. To get single phase 440 you would use one leg of three phase 440/760 three phase power.
Grounding monitor
No it will fry the motor use a voltege reducer
either one could. it depends witch one you unscrew first.
The higher the voltage, the less amperage is required and is easier to supply power to the device. Motors take much more power than lighting, therefore voltages may be higher for easier transmission.
The greatest common factor of 220, 440, and 880 is 220
About 220 volts. They're just different voltage levels. 440 volt services can provide more power than 220 volt services typically.
If you live in a country where your supply is (as in Argentina 220/440v) then this is the carrier voltage.
The LCM is 440.
440/2=220