Which of the following components is crucial for maintaining system integrity?

The filter drier plays a vital role in maintaining the integrity of a refrigeration system. It serves two primary functions: it removes moisture and contaminants from the refrigerant. Moisture can lead to the formation of acids and sludge within the system, potentially causing damage to key components like the compressor and evaporator. Contaminants such as dirt and metal particles can also clog components and impede the operation of the system. By effectively filtering these impurities and maintaining proper moisture levels, the filter drier helps to ensure that the refrigeration system operates efficiently and reliably, preventing breakdowns and extending the lifespan of the system.