A technician wants to speed up refrigerant recovery from a chest freezer by heating the compressor with a torch and rapping the tubing with a hammer. Which statement is correct?
Explanation
Mild warmth (for example a heat gun or warm water) raises refrigerant pressure and helps liquid migrate, and light tapping can free trapped charge, improving recovery from a small appliance. However, a direct open flame on the compressor can overheat oil, damage the system, and create hazards, so it is not proper practice. Techniques should speed recovery without endangering the technician or breaking down the oil.
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