What does a filter dryer do in refrigeration systems?

A filter dryer plays a crucial role in refrigeration systems by removing moisture and contaminants from the refrigerant. Moisture in the system can lead to the formation of ice, particularly in expansion devices, which can obstruct flow and lead to inefficiencies or even mechanical failures. Additionally, contaminants such as dirt and debris could cause wear and damage to critical components, including the compressor and expansion valves.

By filtering out these impurities and moisture, the filter dryer helps maintain the overall health of the system, ensuring consistent performance and enhancing reliability. This is vital for preventing corrosion, which can occur when moisture interacts with refrigerant and oil in the system. Hence, the primary function of a filter dryer is to ensure clean, dry refrigerant circulates throughout the refrigeration system, contributing significantly to its efficient operation.