When identifying a symptom, what step should be performed first?

Talking to the operator is a crucial first step when identifying a symptom in pneumatic systems because operators are often the individuals who have first-hand experience with the equipment. They can provide valuable insights into the operational conditions and performance of the system. This communication helps to establish context around the symptom, including when it occurs, under what circumstances, and any changes in performance noted by the operator.

Operators can often share information about unusual sounds, changes in responsiveness, or other specific behaviors that may not be apparent through physical inspection alone. Gathering this information allows for a more focused and effective troubleshooting process, as it provides clues that may direct subsequent steps, such as consulting the maintenance manual, checking control settings, or inspecting surrounding equipment. Understanding the operator's perspective can significantly streamline the diagnosis, making it an essential initial action.