How is the performance of the refrigerator compressor broken?

When the compressor is damaged, it will not be able to cool, or the cooling efficiency will decrease.

Maintenance method of refrigerator compressor;

1. Check the compressor. Detection of compressor efficiency, that is, the detection of suction and exhaust sealing performance: when overhauling the refrigerator, if the compressor is started normally, the refrigeration effect is not good after being filled with refrigerant, and when other aspects of the refrigeration system are normal, the compression efficiency should be detected; Test the emptying performance of the compressor.

2. Test the motor performance. Winding open circuit detection: the motor running winding resistance (Rmc) is between10 ~ 20Ω, the starting winding resistance (Rsc) is between 30 ~ 50Ω, and the resistance between the two windings is the sum of them (Rms=Rmc+Rsc).

Extended information: maintenance and repair

Maintenance of the compressor must be carried out under the guidance of qualified personnel?

1. Compressed air and electrical appliances are dangerous. During overhaul or maintenance, it should be confirmed that the power supply has been cut off, and warning signs such as "overhaul" or "no gate opening" should be hung at the power supply to prevent others from turning off the power supply and causing injuries.

2. When stopping for maintenance, it is necessary to wait for the whole compressor to cool down and the compressed air in the system to be released safely. Maintenance personnel should avoid any exhaust port in the compressor system as much as possible and close the corresponding isolation valve.

3. When cleaning the unit components, non-corrosive safe solvents should be used, and flammable, explosive and volatile cleaning agents are strictly prohibited.

4. After the compressor runs for a period of time, the safety valve and other protection systems should be checked regularly to ensure its sensitivity and reliability, generally once a year.

5. The spare parts of compressor must be provided by the factory, and its screw oil must be the special oil for screw compressor designated by the company. It is forbidden to mix the two brands of oil, otherwise it will lead to coking of the system and major accidents.

References:

Baidu Baike compressor

Baidu Baike Refrigeration Compressor