What maintenance task involves inspecting the wear on steps and chains?

The maintenance task that involves inspecting the wear on steps and chains is a visual inspection. This process is crucial because it allows technicians to assess the physical condition of the escalator components. Through a visual inspection, one can observe any signs of wear, damage, or misalignment on the steps and chains, which can affect the escalator's performance and safety.

In this context, visual inspection plays a key role in preventive maintenance by identifying potential issues before they escalate into significant problems, ensuring the escalator operates smoothly and safely for users. Conducting regular visual inspections helps maintain compliant operation with safety standards and prolongs the lifespan of the escalator components.