What is the first step in identifying potential boiler issues during operation?

Monitoring pressure and temperature gauges is the most crucial initial step in identifying potential boiler issues during operation. These gauges provide real-time data about the boiler's performance and operational efficiency. Anomalies in pressure and temperature readings can be indicators of underlying problems, such as system leaks, blockages, or improper combustion.

For instance, if the pressure gauge shows significantly lower or higher readings than expected, it could signal a malfunction or safety hazard, prompting immediate attention to prevent potential accidents. Similarly, abnormal temperature readings might suggest issues like overheating or inadequate heat transfer.

This proactive monitoring can lead to timely interventions, thereby maintaining safe and efficient boiler operation. Other options, while they may have some importance in a comprehensive maintenance strategy, do not provide the immediate and critical information needed for early identification of operational issues.