When parallel compressors are used, what must be ensured for proper operation?

When parallel compressors are used, it is essential to ensure that the oil level is correct in all compressors. This is crucial because each compressor requires an adequate supply of oil to lubricate the internal components, maintain efficiency, and prevent damage. If one compressor has a low oil level, it might not function properly, leading to increased wear and tear or even failure. Achieving balanced oil levels across all compressors in a parallel configuration helps maintain consistent performance and reliability across the system.

In parallel compressor systems, the interaction between different compressors can also affect how oil circulates. If oil levels are not maintained correctly, it can lead to issues such as oil starvation in one or more compressors, compromising their operation and potentially leading to catastrophic failure. Thus, monitoring and maintaining the correct oil levels is paramount for the optimal functioning of parallel compressors.