High and low temperature test chamber refrigeration failure What unique secrets do you need to master

High and low temperature test chamber refrigeration failure What unique secrets do you need to master

The high and low temperature box does not refrigerate, which means that there is a problem with the compressor. A complete refrigeration system is composed of a compressor, a condenser, a throttling device and some auxiliary equipment. When the system is working, each equipment is interconnected and affects each other. Once a failure occurs, a comprehensive inspection and comprehensive analysis of the entire system are required to find out the cause of the failure.

　　 High and low temperature box refrigeration failure. What unique cheats do you need to master? The analysis is summarized as follows: one look, two listening, three touch plus analysis.

　　A look refers to checking the values of various instruments, such as oil pressure, temperature, current, etc., checking equipment operation and maintenance records, checking the frost or condensation on the surface of the suction pipe and evaporator, etc.

　　Second listening refers to listening to the sound of the compressor in the high and low temperature box, the flow of refrigerant in the expansion valve, and the operation of the equipment and abnormal phenomena reflected by the management personnel.

　　 Three touches are used to touch the hot and cold degree of system pipes and related parts, as well as the vibration of the equipment during operation.

　　Analysis refers to the use of relevant theories of refrigeration equipment to analyze, judge and find out the cause of the failure phenomenon.