If purging fails in a refrigerating system, what is likely to occur?

In a refrigerating system, purging is the process of removing non-condensable gases such as air from the system. If purging fails, it can lead to an accumulation of these gases, which disrupts the normal operation of the system. This accumulation can cause several problems, but the most significant effect is high-head pressure.

High-head pressure results from the non-condensable gases taking up space in the condenser, where refrigerant is supposed to condense into a liquid. This can lead to higher pressures because the compressor has to work harder to push refrigerant through the system, which can increase the temperature and pressure readings. When the head pressure is elevated, it can lead to inefficient operation, potential damage to components, and ultimately failure of the system.

Understanding the interplay between purging and head pressure is crucial for maintaining the efficiency of refrigerating systems and ensuring that they operate within their intended design parameters.