What are two significant hazards during door and operator repairs?

During door and operator repairs, identifying significant hazards is crucial for ensuring the safety of maintenance personnel. High voltage presents a considerable risk since many elevator systems utilize electrical components that can carry dangerous levels of electricity. When performing repairs, technicians may encounter live circuits or components that could lead to electric shock if proper precautions are not taken.

Pinch points are another significant hazard to be aware of. These occur when body parts can become trapped between moving parts of the door or operator. During repairs, it’s essential for workers to be vigilant about the positioning of their hands and extremities to avoid injuries.

While the other hazards mentioned in the other choices may pose risks in different contexts, high voltage and pinch points are particularly relevant in the maintenance of elevator doors and operators, making them the most significant hazards in these repair scenarios.