What is a consequence of failing to purge a refrigerating system?

Failing to purge a refrigerating system can lead to high-head pressure, which occurs when non-condensable gases accumulate in the system. These gases can contribute to inefficiencies and hinder the system's ability to cool effectively, resulting in elevated pressure readings. High-head pressure not only affects the refrigerant's performance but also places additional stress on the compressor, potentially leading to premature failure and increased energy consumption.

In contrast, purging the system of air and other non-condensables is essential for maintaining optimal performance and ensuring that the refrigerant functions as intended. Thus, not addressing the need to purge a refrigerating system can directly correlate with operational issues, including high-head pressure.