What should be done if there is no water present in the boiler before starting it?

In a boiler system, ensuring the presence of water before starting it is crucial for safe and efficient operations. Water serves multiple purposes, primarily as a heat carrier and to prevent overheating of the boiler components. If the boiler is started without water, it can lead to severe damage, such as overheating, melting of metal parts, or even catastrophic failure.

Adding water immediately before starting the boiler is vital because it ensures the system is properly filled and can operate within safe temperature and pressure limits. Sufficient water levels also allow for effective heat exchange and maintain the integrity of the boiler structure. This action helps prevent damage and hazards associated with dry firing, which can compromise both safety and the longevity of the equipment.

Other options, while they may address different scenarios, do not ensure the immediate rectification of the absence of water. Starting the boiler without water is inherently dangerous and should always be avoided. Waiting for the system to cool down does not resolve the lack of water and could lead to further issues. Checking for leaks is essential as a preventive measure but does not address the immediate problem of an empty boiler. Thus, adding water immediately is the appropriate and necessary action to ensure safe boiler operation.