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Supermarket refrigerated showcase Handling precautions
Supermarket refrigerated showcase Handling precautions
Supermarket refrigerated showcase for reciprocating compressors. The inclination angle of supermarket refrigerated showcase should be less than 45 degrees to prevent the compressor spring from detaching and prevent the refrigerated oil in the compressor It flows into the low-pressure chamber from the return pipe. When the compressor is turned on again for cooling, the freezing chamber is sucked into the cylinder, which not only increases the load of the compressor in a short period of time (the compression ratio in the cylinder is set according to the gas volume, but the liquid It is not easy to be compressed), and the cold oil will be sent to the condenser with the refrigerant, and then when it enters the thin capillary through the filter drier, it will block the pipeline and form an oil blockage.
Precautions for maintenance site The maintenance site should be well ventilated, clean, flat, and the area should be set to a certain extent, fire-fighting facilities should be provided. For maintenance of R600a refrigerant models, ground exhaust fans should also be installed, because this kind of supermarket refrigerated showcase refrigerant has heavy air and is easy to deposit on the ground. The reason why good ventilation is put in the first place is that, in addition to the unpleasant smell during system welding, the main reason is that the concentration of refrigerant in the air exceeds a certain amount and is harmful. For example, R12 refrigerant may cause suffocation, and will decompose toxic gas when exposed to an open flame and the temperature reaches 400℃; R134a is irritating to the skin and eyes; R600a is flammable and explosive.
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