The refrigerant condenser is responsible for maintaining the proper functioning of the appliance. The capacitors store an electric charge and then release it every time the refrigerator motor has to work, by running the motor in action. If this appliance does not work properly, your refrigerator will not cool the food or work poorly. Capacitors can be dangerous and require careful handling during maintenance and repair of the refrigerator.
The electric motor in the refrigerator compressor has two windings in it; a START winding and a RUN wrap. These two windings are physically located 90 degrees to each other inside the compressor motor stator. Since the refrigerator operates on a single-phase AC power of 110 volts, applying this power to the motor would result in both windings being fed at the same time and the net result would be an OSCILLATING electric field oriented at an angle of 45 degrees to both windings.
For the rotor inside the compressor motor to rotate, you must see a rotating magnetic field, not just an oscillator. This is the job of the condenser on your compressor motor.
When you put a capacitor in series with the thread going to the beginning of the winding, then cause a change in the PHASE relation between the current and the voltage in the starting and rolling curves. This is because the OUT current of a capacitor is greatest when the applied voltage is the highest, but when the VOLTAGE VOLTAGE REDUCTION RATE is the highest, and this happens when the sine wave is at 0 (zero) voltage. The result is that the current sinusoidal current entering the original flow occurs at 90 degrees behind the current sinusoidal current entering the driving coil and causing the magnetic field of the start flow to take place 90 degrees later than the winding rolling.
The result of this delay in the magnetic fields of the starting and running stroke is that the rotor in the compressor motor sees what appears to be a rotating magnetic field, not just an oscillator, and this causes the rotor to rotate instead of just making hippy ship hippy until the stator becomes hot and the engine strikes itself on the thermal protection.
In fact, ALL 440-volt three-phase electric motors produce a perfectly round magnetic field with no tricks, gimmicks, smoke or mirrors. So there is only one type of three-phase electric motor with 440 volts.
Since all 110-volt single-phase electric motors would only produce an oscillating magnetic field, all the different 110-volt single-phase electric motors use a certain scam to remove the rotor in thinking it sees a rotating magnetic field instead by an oscillator. So the difference between the different types of 110-volt single-phase electric motors, such as condenser starter motors, split-phase motors, shadowed motors, is that each one uses a different trick to create what appears to be a field magnetic rotation using single-phase power. The starting mode of the electric motors by the capacitor is explained above.
You do not have to resort to this type of trick, using 3-phase power. Wear only the three electrical coils at 120 degrees around the stator, connect each phase to each coil and your stator produces a perfect rotating magnetic field. Only when you are limited to one-phase power, you have to resort to a trick or two to do what otherwise would be a magnetic field field oscillator LOOK as a rotating magnetic field on the rotor.
In a condenser starter motor that is in the refrigerator, if the capacitor is short-circuited or burned, then you have no current at the beginning of the winding or the current from the winding is in phase with the fact that at the winding operation. In both cases, you are left with an oscillating magnetic field and that means the rotor will make the hip-hippy trembling instead of rotating.
Now the eight previous paragraphs were a big lie because the refrigerator probably uses a “RUN” capacitor instead of a “start” capacitor, which means that the capacitor is coupled in series with the operating winding, not with the initial winding. This is because a starter capacitor is only used for the first half a second or so while the refrigerator compressor motor starts up. Once the compressor motor rises to speed, a centrifugal switch cuts off the start coil in the circuit so that the refrigerator only runs on the conveyor belt thereafter.
By putting the condenser on the winding, you can adjust the capacitor mFd class to make the compressor engine run smoother, quieter and more efficient in the other 99,999% of the running time, not just in half a second or so it’s on. But the physics of everything remains exactly the same, so you should now understand both capacitor starting motors and condenser electric motors better than most people you know.