What does "low water cut-off" do?

The function of a low water cut-off is critical for boiler safety. It is designed to monitor the water level within the boiler and automatically shut down the system if the water level falls below a safe threshold. This is crucial because operating a boiler without adequate water can lead to overheating and potential damage, including the risk of a boiler explosion.

When the low water cut-off detects that the water has reached a low level, it initiates a shutdown procedure to prevent these hazards. This safety measure ensures that the boiler operates only under conditions that are safe and efficient, protecting both the equipment and personnel involved in its operation.

Other functions mentioned, such as increasing the water supply or maintaining constant water levels, are typically handled by different components within a boiler system, such as feedwater systems or level control valves. Measuring water temperature, while essential for monitoring boiler efficiency, is not the primary role of a low water cut-off device. Thus, the specific role of the low water cut-off is primarily to shut down the boiler in cases of low water levels to ensure safety.