Recycling and Recovery machines using ______ compressors may overheat when pulling a deep vacuum.

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Multiple Choice

Recycling and Recovery machines using ______ compressors may overheat when pulling a deep vacuum.

When a recovery or recycling machine pulls a deep vacuum, the refrigerant flow through the system drops and takes heat away from the compressor. In a hermetic compressor, the motor and compressor live inside a sealed housing and cooling relies on the refrigerant circulating to remove heat from the motor. With a deep vacuum, there’s very little refrigerant moving to carry that heat away, so the motor overheats more easily. Other compressor types typically have cooling paths that aren’t as dependent on refrigerant flow, making them less prone to overheating under deep vacuum conditions.

When a recovery or recycling machine pulls a deep vacuum, the refrigerant flow through the system drops and takes heat away from the compressor. In a hermetic compressor, the motor and compressor live inside a sealed housing and cooling relies on the refrigerant circulating to remove heat from the motor. With a deep vacuum, there’s very little refrigerant moving to carry that heat away, so the motor overheats more easily. Other compressor types typically have cooling paths that aren’t as dependent on refrigerant flow, making them less prone to overheating under deep vacuum conditions.

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