What should be contacted after the door operates?

The correct choice pertains to limit switches, which are critical components in elevator systems. Limit switches are designed to ensure that the elevator stops at the correct position and operates safely within its designated parameters. After the elevator doors operate, the limit switches play a crucial role in monitoring the position of the door mechanism. If the doors reach their fully open or closed position, these switches can signal the control system to enable or disable certain functions, ensuring that the elevator can operate safely and efficiently.

Limit switches provide feedback to the control circuitry about the position of the doors, which is essential for preventing unintended movement and ensuring that safety measures are in place during operation. This helps to avert scenarios where the elevator could potentially malfunction or cause safety hazards to passengers. Their role is fundamental in maintaining the safe operation of the hoistway and ensuring compliance with safety regulations.

The other components listed, while important in their respective roles, do not directly correlate to the mechanism of door operation. For instance, guide rails are primarily involved in providing a path for the elevator car, while safety edges are designed to detect obstructions and prevent door closure on passengers. Motor brushes deal with the electrical components of the motor, influencing its operation rather than the door mechanism itself.