What is the purpose of an inverted trap in a refrigeration system?

The purpose of an inverted trap in a refrigeration system is to prevent liquid refrigerant from reaching the compressor. This is crucial because compressors are designed to compress vapor, not liquid. If liquid refrigerant enters the compressor, it can cause a condition known as liquid slugging, which can damage the compressor and result in system failure.

Inverted traps are strategically placed in the system to create a barrier that captures and holds liquid refrigerant, allowing only vapor to pass through to the compressor. This helps to ensure the safety and longevity of the compressor, maintaining its operational efficiency and preventing costly repairs.

The other potential functions mentioned in the options do not align with the primary purpose of an inverted trap. While condensate drainage, suction pressure maintenance, and oil separation are important aspects of refrigeration system operation, they do not specifically relate to the role of an inverted trap in preventing liquid refrigerant from damaging the compressor.