Under what condition is the use of system-dependent recovery equipment against EPA regulations?

The use of system-dependent recovery equipment is against EPA regulations when the appliance contains over 15 pounds of refrigerant. System-dependent recovery equipment relies on the refrigeration system itself to facilitate the recovery process, which can place limitations on its safe and effective use.

For appliances with larger refrigerant charges, specifically those over 15 pounds, it is critical to use an active recovery device instead. This is because system-dependent equipment may not be capable of adequately recovering the refrigerant without the potential risk of refrigerant release into the atmosphere, which EPA regulations seek to prevent. Active recovery devices actively remove the refrigerant regardless of the system's pressure or temperature, thus ensuring compliance with EPA's regulations regarding refrigerant management and environmental protection.