What is a common indicator of brake wear on an elevator?

The presence of all the listed factors indicates potential brake wear in an elevator system. Each of these signs contributes to understanding the condition of the brakes:

• When the elevator speed exceeds the normal range, it may suggest that the brakes are not engaging properly or are losing effectiveness. This can occur if the braking surfaces have worn down, leading to less friction and, consequently, inadequate stopping power.

• Audible noise during operation, such as grinding or screeching sounds, can be a direct result of brake wear. As the brake components deteriorate, they may not align or contact as intended, producing sounds that signal a need for maintenance.

• Increased stopping distance is a critical indicator of brake inefficiency. If the brakes require a longer distance to bring the elevator to a stop, it typically indicates that the braking force is compromised, often due to wear on the brake pads or other components.

Together, these indicators help maintenance personnel assess the condition of the braking system and determine the necessary actions to ensure safe and reliable elevator operation. Identifying one or more of these signs should prompt further inspection and potential servicing to avoid safety risks.