Sealing detectors usually use vacuum leak tests to detect refrigeration equipment systems. The vacuum data changes can be used to determine whether the refrigeration equipment system isIs there any air seeping into the system?Hai RuisiSeal detectorThere are two situations for vacuum leak testing:1.For small refrigeration equipment systems, external units are generally usedMachine to perform vacuum leak testing;2.For larger refrigeration equipment systems, the compressor in the system is generally used to perform self-vacuum leak testing. 

Issues that should be paid attention to during leak testing:

1.During the self-vacuuming test, always observe the escape of bubbles on the oil surface. If no bubbles escape for a long time, you can stop.Vacuum and observe24If there is no change in vacuum degree after 1 hour, it is considered qualified.Otherwise, it will be regarded as unqualified;

2.When self-evacuating the pressure-lubricated compressor refrigeration system, the contacts of the oil pressure relay should be temporarily and forcibly connected.;And it’s trueThe idle time cannot be too long to prevent the moving parts of the compressor from working at higher temperatures for a long time, which is prone to greater wear and metal fatigue.