What should happen when the backup or lag compressor is running in a medical gas system?

When the backup or lag compressor is running in a medical gas system, it is essential to ensure the safety and proper functioning of the gas supply. A local alarm shall activate to indicate that the backup system is operational. This alert serves as a critical notification to facility staff, allowing them to be aware that the primary compressor may not be functioning correctly, which is vital in ensuring continuous gas supply without interruption.

The activation of the local alarm acts as a proactive measure, enabling personnel to address any potential issues with the primary system promptly. This response is crucial in medical settings where consistent availability of medical gases is life-sustaining. The alarm ensures that appropriate actions can be taken to troubleshoot or maintain the system, minimizing risks of gas supply failure.

While other options may seem relevant in maintaining system performance and safety, they do not specifically pertain to the immediate response expected when the backup compressor is in operation. Ensuring awareness through a local alarm is the priority in this scenario.