When is it permissible for a 2:1 car to have ropes attached to the cross head?

In elevator systems, the configuration and operation of ropes are critical to ensure safety and functionality. A 2:1 car design is a specific arrangement in which the ropes are looped to provide mechanical advantage, typically requiring proper alignment and tension during operation.

The correct understanding is that ropes should never be attached to the crosshead of a 2:1 car during normal operations or any testing scenarios. The reason for this is that attaching ropes to the crosshead can interfere with the natural and designed movement of the car within the hoistway, potentially leading to malfunctions, safety hazards, or accidents. The ropes are designed to function in a specific manner, and adding attachments to the crosshead contradicts the operational principles intended for safe elevator use.

Maintenance may require adjustments or inspections, but the arrangement of the setup fundamentally remains the same during those times, emphasizing no modifications that could jeopardize safety. Thus, the statement about never attaching ropes to the crosshead maintains safety standards and operational integrity within elevator systems.