Found on more modern or top of the range LG fridge freezer units , these we developed for efficiency they all still do the same job that is pump refrigerant around the system. Normal compressors use a 4 step process but these do the same motion in one singular motion this reduces wear, tear, friction, uses less energy and is quieter in operation.
The compressor is controlled by the invertor which provides voltage at between 30v and 440v varying the speed of the compressor motor to do this a doubling capacitor is used.
To test these you need to test the capacitor see our post here on that. A sign of these failing would be very slow compressor with poor cooling in fridge freezer.
The pins look similar on these but it only has one winding so you should only get one reading from these between common and run and can be anything 4 - 9 ohms. You really need to insulation resistance test for these too to earth.
No comments:
Post a Comment