What should be monitored closely when using a deluge sprinkler system?

Monitoring the water supply is crucial when using a deluge sprinkler system because this type of system relies on a continuous and sufficient flow of water to effectively control or extinguish a fire. Deluge systems are designed to disperse a large volume of water over an area, and any interruption or inadequacy in the water supply can compromise the system's effectiveness during a fire emergency.

Ensuring that the water supply maintains the required pressure and flow rate is vital for the system to function properly. Additionally, if the water supply is not adequate, it may lead to a delay in the response to a fire, potentially resulting in greater damage or risk to life. Thus, close monitoring of the water supply ensures that the deluge system remains ready and effective when activated.