What is the purpose of installing a filter drier in the liquid line?

The installation of a filter drier in the liquid line primarily serves to remove moisture and acid from the refrigeration system. Moisture in a refrigeration system can lead to the formation of ice, which can block refrigerant flow and decrease the efficiency of the system. Additionally, the presence of moisture can result in the formation of acids when refrigerant and moisture react. These acids can corrode components within the system, leading to failures and potential leaks.

By utilizing a filter drier, the system is not only protected from moisture and subsequent ice formation but also from the harmful effects of acid corrosion. This contributes to the longevity and consistent performance of the refrigeration system. The filter drier effectively ensures that the refrigerant passing through it is clean and dry, which is essential for the optimal operation of both the compressor and the entire system.