What must occur when the control rope is pulled in the direction of travel on an endless belt type manlift?

When the control rope is pulled in the direction of travel on an endless belt type manlift, the correct response involves the activation of the braking system. This safety feature is designed to manage the movement of the manlift and ensure that occupants are not put at risk.

When the control rope is engaged, it triggers the brake to activate, which acts as a safety measure to prevent unintended movement. This braking action can help halt any descent and stabilize the system, ensuring that the manlift operates within safe parameters.

Understanding the mechanism of control ropes is crucial for elevating devices mechanics, as it highlights the importance of safety systems in machinery operations. The other responses do not accurately describe the consequences of pulling the control rope in the direction of travel; for example, the elevator descending or stopping would not occur without the braking system being engaged to maintain safety.