What is the primary goal of system evacuation in refrigeration?

The primary goal of system evacuation in refrigeration is to remove gas and moisture from the system. This process is crucial because contaminants such as moisture can lead to several issues, including the formation of ice in the system, which affects heat transfer and can cause blockages. Additionally, impurities or air within the refrigeration system can lead to reduced efficiency and potential damage to components. By performing an evacuation, technicians ensure that the only substances in the system are the refrigerants and oils intended for proper operation, thus promoting optimal system performance and longevity.

Evacuating the system creates a vacuum that eliminates these unwanted gases and moisture, ensuring that the refrigerant circulates effectively, reducing the risk of failures and enhancing energy efficiency. This foundational step is critical before charging the system with refrigerant, setting the stage for reliable operation.