Why could a recycling or recovery machine that uses a hermetic compressor overheat when drawing deep vacuums? (A) A) It has a higher compression ratio limit than other equipment. (B) B) The oils used in hermetic compressors are a lower viscosity than the oils used in other equipment. (C) C) The motor relies on the flow of refrigerant through the compressor for cooling. (D) D) It runs faster than other equipment with oil less compressors.

When drawing deep vacuums, hermetic compressors can overheat because the motor relies on the flow of refrigerant through the compressor for cooling. Without sufficient refrigerant, the compressor struggles to maintain its operating temperature, which can lead to overheating. It's essential to ensure proper refrigerant levels, or the compressor might just fry itself rather than do its job! If you're dealing with recycling machines, ensure regular maintenance, which includes checking the refrigerant levels and ensuring there is adequate flow. Many people mistakenly assume that machines can operate indefinitely without maintenance, but neglecting these checks can lead to more serious issues like overheating, which can cost both time and money!