Which situation would NOT typically generate a supervisory signal?

A supervisory signal is a type of notification in fire alarm systems that indicates the status of system components that do not directly involve fire detection or alarms, but are critical for system reliability and functionality.

In standard practice, low air pressure in a sprinkler system qualifies as a supervisory signal because it indicates that the system may not be adequately charged and thus could fail to operate effectively in the event of a fire. Similarly, high water levels in a gravity tank would also generate a supervisory signal to ensure that water levels are maintained for proper firefighting capabilities. Likewise, a valve supervisory switch indicating an issue is crucial; if a valve is closed when it should be open, this could impede water flow to the sprinkler system, and a supervisory signal alerts the system of this problem.

On the other hand, when a fire pump is running adequately, it signifies that the system is functioning correctly in delivering water for fire suppression, but it does not indicate any issue that requires attention. Therefore, it does not warrant a supervisory signal. This situation reflects normal operational status, rather than a concern that needs monitoring or action.