Can a hermetic compressor be operated when the system is under a deep vacuum?

Operating a hermetic compressor under a deep vacuum is not advisable due to several critical reasons. Hermetic compressors are designed to work with a specific pressure range that is necessary to maintain efficient operation and ensure proper lubrication. When a system is under a deep vacuum, the pressure inside the compressor can drop below the threshold needed for adequate cooling and lubrication.

The refrigerant in the system is essential for absorbing heat during the refrigeration cycle. In a deep vacuum situation, there is insufficient refrigerant vapor to maintain the necessary suction pressure. This can lead to overheating of the compressor, as it relies on the refrigerant for both cooling and lubrication. Excessive temperatures can damage the winding insulation, causing compressor failure.

Moreover, running a hermetic compressor under these conditions may increase the risk of mechanical failure, contamination, or even burnout due to inadequate lubrication. Therefore, it is crucial to avoid operating hermetic compressors in deep vacuum scenarios to preserve their integrity and ensure proper functioning within the designed operating parameters.