a three phase motor is reversed by switching 2 of the 3 power leads (any two) something is switching the power leads on you
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Depending on who does the work it could be less expensive than getting a different air conditioner. The compressor will also need a capacitor and some rewiring. The old unit could have a 3 phase blower motor also which could run the price up even more. Although the changes can be made, the warranty at best will probably be a one year warranty and a new unit could have a 5-10 year warranty.
Split-phase motors are used in many applications that require a medium amount of performance from a single phase source. Many of the motors used in homes that are supplied by single phase power are split-phase motors. Some applications include running fans, blowers, water pumps, air compressors, conveyor belts, and more. The only limits on the applications that can use split-phase motors are the availability of single phase power and the charectoristics of the motor itself.
Answer for USA, Canada and countries running a 60 Hertz supply service.In commercial and industrial installations it is important to have the whole building phased correctly. Usually these types of businesses are three phase. Three phase motors that have plugs on them for quick swapping in case of a break down can be connected anywhere in the plant and still have the correct rotation. Also if the business has a stand by generator it also has to be correctly phased with the plant so as not to reverse three phase equipment when the generator starts. Phase sequence from left to right is A, B, C.I'm not an electrician but i do know that in some motors if any of the positive wires are swapped from there correct place the motor will run backwards (in the wrong direction) it is important to know the correct sequence.
No, in North America most homes are wired to a single phase transformer. That transformer is connected to a three phase power grid. Some of the newer apartment buildings and condominium complexes have three phase systems in them. Their voltages are 120/208 as compared to a homes single phase connection of 120/240 volts.AnswerSome European countries, such as here in Cyprus, have three-phase residential supplies as standard for some reason -can't quite figure out why it should be necessary, though!
A 3-phase motor probably has some scrap value to a scrap-metal dealer.