What is the purpose of performing a recovery vacuum in a refrigeration system?

Performing a recovery vacuum in a refrigeration system is primarily aimed at preventing refrigerant from escaping into the atmosphere. This is essential for environmental protection, as refrigerants can contribute to ozone depletion and global warming if released. The recovery vacuum process involves removing the remaining refrigerant from the system whenever service or maintenance is required, ensuring that it is not released into the environment.

In addition, creating a vacuum not only helps in safely handling the refrigerant but also prepares the system for either repair or maintenance by removing any moisture and non-condensable gases that could cause inefficiencies or damage. This process is a critical part of adhering to regulations set forth by the EPA, which mandate responsible handling of refrigerants to minimize environmental harm.