If the chiller has a high pressure on the low pressure side, how to judge and analyze the possible causes?

1. If the chilled water temperature of the medium on the side that needs to be cooled is too high when the chiller is running, it may be hot water above 40℃, then the low pressure value of the refrigerant of the chiller will be very high. When the refrigeration continues to run, the chilled water temperature will slowly drop, and the low pressure value of the refrigerant of the chiller will gradually decrease;

2. If the refrigerant charge of the chiller is added too much, the high pressure value and low pressure value of the chiller refrigerant will be higher;

3. If the capillary tube or expansion valve of the throttling device of the chiller is damaged, and the refrigerant throttling and pressure reduction fails, the low pressure value of the refrigerant of the chiller will be higher;

4. If there is no significant change in the high and low pressure values when the chiller is turned on, that is, there is no compression ratio, and the high and low pressure values of the chiller in the shutdown state are similar, it may be that the compressor’s internal compression components are damaged. , Causing the refrigeration compressor to be unable to compress;