When a refrigeration system is in deep vacuum, what should never be done?

When a refrigeration system is in deep vacuum, what should never be done?

• A. Open the service valves
• B. Energize the compressor
• C. Check the pressure
• D. Recover refrigerant

Answer: (B)

When a refrigeration system is in deep vacuum, energizing the compressor should be avoided because it can lead to serious damage. In a deep vacuum, the pressure inside the system is significantly lower than atmospheric pressure, which means that when the compressor is activated, it has to work against this low-pressure environment. This scenario can result in the flooding of the compressor with any residual oil or contaminants present, potentially causing mechanical failure or hydrolock. Furthermore, operating the compressor in a deep vacuum may also fail to provide adequate lubrication, which relies on the presence of refrigerant vapor. The absence of proper refrigerant in a deep vacuum situation can lead to overheating and further damage the compressor's internals. Therefore, maintaining the integrity of the system and ensuring safe operational conditions is critical, making the avoidance of energizing the compressor while in a deep vacuum essential for the longevity and effective functioning of the refrigeration system.

When a refrigeration system is in deep vacuum, energizing the compressor should be avoided because it can lead to serious damage. In a deep vacuum, the pressure inside the system is significantly lower than atmospheric pressure, which means that when the compressor is activated, it has to work against this low-pressure environment. This scenario can result in the flooding of the compressor with any residual oil or contaminants present, potentially causing mechanical failure or hydrolock.

Furthermore, operating the compressor in a deep vacuum may also fail to provide adequate lubrication, which relies on the presence of refrigerant vapor. The absence of proper refrigerant in a deep vacuum situation can lead to overheating and further damage the compressor's internals. Therefore, maintaining the integrity of the system and ensuring safe operational conditions is critical, making the avoidance of energizing the compressor while in a deep vacuum essential for the longevity and effective functioning of the refrigeration system.