When the water level in a steam boiler is proven to be low, what is the first step?

The initial response to a verified low water level in a steam boiler is to stop the fuel and air supplies. This action is critical because a low water level can lead to overheating and potential damage to the boiler. If the burner continues to operate without sufficient water to absorb the heat produced, it can result in what is known as a dry firing condition. This poses serious risks, including damaging the boiler's components and creating unsafe operating conditions.

By halting the fuel and air supplies, you mitigate the risk of the boiler running in an unsafe condition. Ensuring that these supplies are cut off allows for a safe assessment of the situation and provides time to address the low water condition before resuming normal operation. This approach prioritizes safety and proper boiler function, which is essential in maintaining system integrity.