What is the required condition for refrigerant recovery before system repair?

The requirement for refrigerant recovery before conducting repairs on a system is that the refrigerant must be fully recovered to the required level. This is essential for safety and compliance with environmental regulations. Proper recovery ensures that all refrigerant is collected from the system, preventing any release into the atmosphere, which could contribute to ozone depletion or global warming, depending on the type of refrigerant used.

By fully recovering the refrigerant, technicians help maintain the system's efficiency, prevent potential harm to the environment, and comply with EPA regulations, which mandate responsible handling of refrigerants. It also ensures that the technician can safely work on the system without risk of refrigerant exposure or pressure-related incidents. This practice is crucial in maintaining operational integrity and protecting both the technician and the environment.