What is one of the most important aspects that an operator must check before starting up a compressor?

Checking oil levels is crucial before starting up a compressor because adequate lubrication is essential for the proper functioning and longevity of the compressor. Oil helps reduce friction between moving parts, dissipates heat, and prevents wear and tear. If the oil level is too low, it can lead to insufficient lubrication, potentially causing severe damage to the compressor’s internal components, such as the bearings and cylinders. This could result in overheating or even catastrophic failure of the compressor.

While other factors like power supply, temperature settings, and refrigerant levels are also important and should be checked as part of a comprehensive startup procedure, ensuring that the oil levels are appropriate directly impacts the immediate operational integrity and safety of the compressor. Thus, it is often regarded as one of the top priorities in the pre-startup inspection process.