I. Reasons, judgement and maintenance methods for all refrigerant leakages in the refrigeration system
1. The freezer installation company informed the reason that the refrigeration system was not open for long periods of time and that leakage was not observed until it was on or that during the course of its use it was not possible to reduce it, mostly because of the sudden break-up of the refrigeration pipeline, which led to a rapid leakage of refrigerants
2. Method of determination: refrigeration compressors can be easily activated without damage to the chiller compressor, with a vacuum in the inhaling pressure, low exhaust pressure and cold vents, and no sound of liquid flow in the evaporation unit, indicating that there is no residual refrigerant in the system
3. Method of maintenance: the chengdu freezer is equipped with a careful examination of the complete machine and the location of the leak, especially those that are vulnerable to leakage, and once the leak is located, it can be performed in a targeted manner, depending on the circumstances of the leak, and then reempted and filled with refrigerants
Ii. Clogged expansion valves in refrigeration systems
1. Frustration performance: normal cooling occurs when the refrigeration system starts running, but after a period of time the entire outer surface of the swelling valve begins to frost until the evaporation temperature drops to around 0 degrees, the moisture begins to accumulate at the swelling valve and then gradually plugs in the swelling valve. Next, as the temperature drops, the evaporation unit starts to frost. And i can't hear the air. The sichuan freezer was installed and air pressure began to be vacuumed. At this point, only hot water is required to heat the swelling valve, and the frosts at the melting valve hole will allow normal cooling
2. Causes of failure:
The drying of some of the major parts in the refrigeration system is not in place
B. Refrigeration systems are not fully implemented
C. Refrigerant is of unsatisfactory quality, such as excess water content
3. Method of maintenance: a filter with a stupor can be installed in the refrigeration system, the stupor can be absorbed with water calcium chloride, etc., and the moisture in the refrigeration system can be removed if the water is fully absorbed
