When using a system-dependent recovery system on an appliance with a non-operating compressor, where should access fittings be placed?

• A. On the low side only
• B. On the high side only
• C. On both sides
• D. Not required

Answer: (C)

The concept is that a system-dependent recovery device relies on the appliance’s own compressor to move refrigerant. If the compressor isn’t operating, you need access on both sides of the system so you can reach refrigerant from all portions of the circuit and allow the recovery equipment to extract it completely. Installing fittings on both the high-pressure side and the low-pressure side ensures you can recover refrigerant from the entire system and prevents trapped refrigerant, meeting EPA requirements. Access on only one side could leave refrigerant behind in the other portion of the circuit.