What is the purpose of a low-water cutoff device in a boiler?

The purpose of a low-water cutoff device in a boiler is critical for the safe operation of the system. This device is designed to monitor the water level within the boiler and to shut down the burner if the water level falls too low. When the water level drops below a predetermined point, the low-water cutoff will activate, preventing the boiler from operating without sufficient water.

If the boiler continues to operate without an adequate water supply, it can lead to overheating of the boiler components, potentially causing damage to the boiler and creating a hazardous situation. Therefore, the low-water cutoff is essential for preventing overheating by ensuring that the boiler does not operate under unsafe conditions.

Other options relate to different functions that may not specifically pertain to the protective role of the low-water cutoff. While controlling steam pressure and maintaining optimal water levels are important aspects of boiler operation, they do not capture the primary focus of a low-water cutoff device. Similarly, monitoring fuel levels falls outside the scope of this device's intended purpose.