1. Abnormal noise can be caused by serious internal wear of refrigerator car compressor.

① There are many reasons for the abnormal noise of the compressor due to the improper tightness of the drive belt. For example, the compressor electromagnetic clutch is damaged. Light will cause the compressor does not work, heavy will cause damage to the compressor. When the drive belt works, if the compressor pulley and the generator pulley are not in the same plane, the service life of the drive belt or the compressor will be reduced. The repeated closing of electromagnetic clutch will also cause abnormal noise of compressor. For example, the power generation of the generator is insufficient, the pressure of the air conditioning system is too high, or the engine load is too large, which will cause the electromagnetic clutch to repeatedly pull in.

② In addition to the problems of the electromagnetic clutch itself, the tightness of the transmission belt of the compressor also directly affects the service life of the electromagnetic clutch. If the transmission belt is too loose, the electromagnetic clutch is easy to slip; If the transmission belt is too tight, the load on the electromagnetic clutch will increase. The electromagnetic clutch of refrigerator car compressor is a common part with abnormal noise. The compressor often runs from low speed to high speed under high load, so the requirement of electromagnetic clutch is very high, and the installation position of electromagnetic clutch is generally close to the ground, which often contacts with rain and soil. When the bearing in the electromagnetic clutch is damaged, it will produce abnormal noise.

③ Reliable lubrication is needed when the compressor of vehicle air conditioner works. When the compressor is short of lubricating oil, or the lubricating oil is not used properly, serious abnormal noise will occur inside the compressor, and even the compressor will be worn and scrapped.

④ There should be a certain gap between the electromagnetic clutch and the compressor mounting surface. If the gap is too large, the impact will increase. If the gap is too small, the movement interference between the electromagnetic clutch and the compressor mounting surface will occur, which is also a common cause of abnormal noise.

2. Leakage

Refrigerant leakage is the most common problem of refrigerator car refrigeration system. The leakage part of the compressor is usually at the junction of the refrigerator car compressor and the high and low pressure pipe. It is troublesome to check because of the installation position. The internal pressure of the air conditioning system is very high. When the refrigerant leaks, the lubricating oil of the compressor will be lost, which will lead to the air conditioning system not working or poor lubrication of the compressor. There are pressure relief protection valves on refrigerated vehicle compressors. The pressure relief protection valves are usually disposable. When the system pressure is too high, the pressure relief protection valve should be replaced in time.

3. Not working

There are many reasons why the refrigerator car compressor does not work, usually because of the related circuit problems. The compressor can be initially checked for damage by directly supplying power to the electromagnetic clutch of the compressor.

Shandong Tuolu automobile refitting Co., Ltd. will serve you wholeheartedly!