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What evacuation level must technicians recover refrigerant to before disposing of a low-pressure appliance?

A. 0 psig
B. 15 inches of Hg vacuum
C. 25 inches of Hg vacuum
D. 25 mm of Hg absolute

Answer :

Final answer:

Technicians must recover refrigerant to a 15 inches of Hg vacuum before disposing of a low-pressure appliance.


Explanation:

Technicians must recover refrigerant to a 15 inches of Hg vacuum before disposing of a low-pressure appliance. This level of evacuation ensures that the system is properly evacuated, removing any remaining refrigerant and moisture. The use of a vacuum pump creates a vacuum pressure within the system, which is measured in inches of mercury (Hg).


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