When must elevator wire ropes be lubricated by the installer?

The correct answer indicates that elevator wire ropes must be lubricated at the time of first-time installation. This is important because proper lubrication is crucial for the longevity and functionality of the wire ropes. Lubrication reduces friction during operation, helps prevent wear and corrosion, and allows for smooth transitions as the ropes move within the sheaves and over pulleys.

At first-time installation, it's essential to ensure that the wire ropes are adequately lubricated, as they will be placed under tension and subjected to movement. The lubrication at this stage serves as both a protective measure and facilitates effective operation from the outset. Proper installation practices, including lubrication, help to avoid premature failures and ensure compliance with safety regulations in elevator systems.

While wire ropes indeed undergo routine maintenance and can be pre-lubricated, it is the initial lubrication upon installation that is critical for setting a solid foundation for the elevator’s function and reliability.