What is the role of a filter-drier in a refrigeration system?

The role of a filter-drier in a refrigeration system is crucial for maintaining the health and efficiency of the system. A filter-drier is designed to remove moisture and contaminants from the refrigerant. Moisture can lead to the formation of acids and sludge inside the system, which can cause significant damage to components like compressors and evaporators, ultimately leading to system failure. Furthermore, contaminants such as dirt and metal shavings can come from wear and tear of internal components or from other sources, and these particles can obstruct the flow of the refrigerant and diminish system performance.

By filtering out these impurities and absorbing excess moisture, the filter-drier helps to ensure the refrigerant is clean, dry, and capable of functioning effectively. This protection is essential for maintaining the optimal operation of the system and extending its lifespan. Therefore, the primary responsibility of a filter-drier revolves around safeguarding the system from the negative impacts of moisture and other contaminants.