What happens if a pressure gauge is malfunctioning?

A malfunctioning pressure gauge can lead to an inaccurate reading of system pressure, which is critical for ensuring safe boiler operations. If the pressure is either underestimated or overestimated, it can result in improper functioning of the boiler. For example, if the gauge shows a lower pressure than what is actually present, operators may not take necessary safety precautions, potentially leading to an overpressure situation. Alternatively, if the gauge indicates a higher pressure, it may lead officials to reduce fuel feed or shut down operations prematurely, disrupting normal function. Therefore, having an accurate and properly functioning pressure gauge is essential for maintaining the safety of boiler operations.

The other choices do not relate directly to the consequences of a pressure gauge malfunction. Fuel consumption and water quality are affected by factors such as the efficiency of combustion or water treatment processes, and airflow is influenced by other operational parameters within the combustion system rather than the functioning of a pressure gauge.