What component notifies the DMP if there is no air flow?

The component that notifies the DMP (District Master Panel) if there is no airflow is the air flow switch. This device is specifically designed to detect the presence or absence of airflow in a system, typically within heating, ventilation, and air conditioning (HVAC) systems. When the airflow is insufficient or completely absent, the air flow switch activates to send a signal to the DMP. This alert allows for quick corrective actions to be taken to prevent damage to the system or ensure safety protocols are followed.

The air flow switch operates on the principle that it will only close or remain in an active state when proper airflow is detected. If airflow ceases, the switch opens, triggering an alarm or alert to the control panel. This functionality is crucial for maintaining safe operational conditions and protecting equipment from potential overheating or failure due to inadequate ventilation.

Other components like the pressure switch, temperature sensor, and fan motor serve different functions in the system. The pressure switch monitors pressure levels but does not specifically detect airflow. The temperature sensor checks the temperature of the air or the system but is not designed to handle flow detection. The fan motor operates to move air through the system rather than monitor its presence. Thus, it is the air flow switch that plays the