What is the correct order for pumping down a refrigeration system?

The correct order for pumping down a refrigeration system involves specific steps that ensure the refrigerant is safely and effectively removed from the system. This process typically includes isolating the system, closing the liquid and suction valves, and using the service port to evacuate the refrigerant.

The sequence identified in the correct response follows a practical approach often used in refrigeration maintenance. Starting with the appropriate disconnection and isolation of the system ensures that it can be depressurized safely without contaminating the environment or the system itself. The steps proceed methodically to avoid introducing any issues that could compromise the system integrity or safety during the pumping down process.

In this context, the order starting with isolating the system and ending with checking for complete evacuation reflects best practices in handling refrigeration components, indicating a clear understanding of the necessary procedures for safely maintaining and servicing systems. Following these steps accurately minimizes the risk of refrigerant leaks and promotes a thorough approach to system maintenance.