A system pressure reading of 0 psi indicates that refrigerant recovery is

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Multiple Choice

A system pressure reading of 0 psi indicates that refrigerant recovery is

Explanation:
Recovery depends on there being refrigerant inside the system to remove. A reading of 0 psi means there’s no pressure left in the system, i.e., the refrigerant has already been evacuated. With nothing to recover, the recovery process can’t pull out any refrigerant, so recovery isn’t possible at that moment. Temperature doesn’t change this fundamental fact—if the system is evacuated, you won’t recover refrigerant no matter what the temperature is.

Recovery depends on there being refrigerant inside the system to remove. A reading of 0 psi means there’s no pressure left in the system, i.e., the refrigerant has already been evacuated. With nothing to recover, the recovery process can’t pull out any refrigerant, so recovery isn’t possible at that moment. Temperature doesn’t change this fundamental fact—if the system is evacuated, you won’t recover refrigerant no matter what the temperature is.

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