ESCO Employment Ready Practice Test

Fluctuating discharge line pressure is an important indicator of potential issues with a compressor. When a compressor is functioning properly, it should maintain a relatively consistent discharge pressure. Fluctuations in this pressure can suggest problems such as turbulence, blockages, or insufficient refrigerant levels, which could affect the overall efficiency and performance of the compressor. Consistency in discharge line pressure is crucial for optimal compressor operation, as variations can lead to additional strain on the compressor or other components within the system.

In contrast, low energy consumption might indicate efficient operation rather than a problem, high temperatures at the compressor outlet could be a symptom of another issue but aren't as directly indicative of pressure problems, and consistent low liquid line pressure could suggest refrigerant issues without being as directly tied to the performance of the compressor itself.