What must manifolds for gas cylinders activate when changing over from one header to another?

The correct choice emphasizes the importance of safety and monitoring in medical gas systems. Manifolds serve as control systems that manage the gas supply from multiple cylinders, facilitating a seamless transition from an empty gas source to a full one. When switching from one header to another, activating a local signal and master alarm panel indicator is crucial. This activation not only alerts medical personnel and facility staff that a changeover is taking place, thereby enhancing situational awareness, but it also ensures that any potential issues or failures in the gas supply are promptly addressed.

This process is critical in maintaining an uninterrupted gas supply, especially in healthcare settings where continuous access to potent medical gases like oxygen or nitrous oxide is vital for patient care. Additionally, the presence of visual and auditory signals during this transition can prevent miscommunication or errors, ensuring that necessary actions are taken swiftly should any complications arise. Overall, this safety feature aids in compliance with industry regulations and standards regarding medical gas systems, ultimately protecting both patients and staff.