What requires adjustment and lubrication for proper operation in elevator systems?

In elevator systems, adjustments and lubrication are essential for components that involve moving parts and mechanical interactions. Mechanical stepper switches, which play a critical role in signaling the position of the elevator car and controlling its movement, rely on precise mechanical action to function effectively. Over time, components within stepper switches can wear down or become misaligned, necessitating adjustments and lubrication to ensure smooth operation.

Proper lubrication reduces friction between moving parts, which can enhance the responsiveness and reliability of the switch action. Without sufficient lubrication or adjustments, the switch may not operate as intended, leading to potential malfunction or safety issues.

Other components like emergency brakes, power cables, and control panels do not typically require the same frequent adjustments and lubrication. Emergency brakes function mechanically and may have a simpler design that does not need regular adjustments, while power cables are typically checked for integrity rather than lubrication, and control panels mainly involve electronic or digital components.