What happens if the pump fails while using a float-operated low water cut off?

When a pump fails while using a float-operated low water cut-off, the system is designed to respond to unsafe conditions by ensuring that the operation of the boiler is carefully managed. The float-operated low water cut-off detects the water level in the boiler and is designed to shut off the fuel supply if the water level falls below a certain threshold.

In this scenario, if the pump fails and the water level drops too low, the float mechanism will trigger the solenoid that controls the fuel cut-off valve to close. This action prevents the boiler from operating under unsafe conditions, such as running low on water, which can lead to overheating and potentially catastrophic failure. Therefore, the solenoid closing effectively halts the combustion process until the water level is restored to a safe operating condition.

This mechanism is crucial for maintaining the safety and integrity of the boiler system, thereby safeguarding both the equipment and the personnel operating it.