If a refrigerator chiller malfunctions without cooling, it is equivalent to a refrigerated truck. No matter what kind of goods it transports, it will deteriorate or be broken. Therefore, it is important to be able to quickly troubleshoot the chiller and fix it. Here, we will give you a brief description of the types, phenomena, causes, judgments, and handling methods of compressors and chillers for small refrigerators. These contents not only apply to the vehicle, but also can be used for reference when dealing with the faults of other chillers. Â Â Â Â When starting the compressor, check the power supply first, check the operation status of the protective packaging and automatic control components of the control system, and check the contact status of contacts, fuses, and other electrical appliances. When there is a power source and the compressor does not start, it is very likely that the motor is burned or the compressor is completely solidified due to reasons such as pulling the cylinder or burning the shaft. After confirming the cause of the fault, it can be repaired for the cause.
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   The material and processing of cylinders and pistons, methods of assembly and clearances, and necessary cooling are important. Otherwise, lighter refrigerated trucks will cause cylinders, pistons, etc. to pull or wear unevenly, which will cause leakage. In severe cases, pistons and piston rings will solidify in the cylinder, and even cause a large number of components to be damaged. Because the contact surface is small, or the material is bad, it will cause the bearing heat to burn, and it will be more serious when the working condition is bad and the cooling is poor. In addition, the quality of the oil is also very important. Deterioration, deterioration, or gelation of the refrigerator oil is not conducive to lubrication. Containing impurities in the oil often causes the shaft to pick up.
Use the ear to listen to the sound: For any abnormal sound, the location and cause of the accident should be identified. The motor lacks phase, liquid strike, and damage to the unit parts will cause abnormal sound, and loose connection parts and pipes will generate vibration. noise. Observe the change of the pressure gauge with the eyes: When the unit works abnormally, it can always be judged from the abnormal pressure display, such as oil pressure and exhaust pressure, and the suction pressure has a certain range of requirements.
   Feel the temperature by hand: the motor winding temperature, exhaust temperature, and high oil pressure all indicate abnormal factors, and ice blocking and dirty plugging and suction tube overheating can also be judged from the temperature.
  In accordance with the normal operating procedures to boot is an important part of the prevention of failure, daily maintenance is also very important. Therefore, vehicle owners need to additionally maintain small refrigerators on weekdays, which can also reduce the occurrence of failures.
