What condition does a low water cutoff aim to prevent in a boiler?

A low water cutoff is a crucial safety device used in boilers that helps to prevent significant boiler damage, which can occur when the water level drops below a safe operating level. When water levels are too low, the boiler can overheat due to the heat produced by the burners or elements not being adequately absorbed by the water. This overheating can lead to damage to the boiler's components, including the metal parts, which can warp or weaken, ultimately compromising the integrity and safety of the boiler system.

Preventing boiler damage is essential for maintaining the longevity and efficient operation of the boiler, as well as for ensuring safety in the facility where the boiler is installed. While the other options, such as boiler leaks, explosions, and overheating, are related risks, the primary purpose of the low water cutoff is specifically to guard against damage caused by low water levels, which directly impacts the boiler's ability to function safely and effectively.