These large fans are responsible for providing oxygen to the boiler for primary combustion.
Over time, these fans can see high debris, causing build-up. On this fan, SMARTdiagnostics called out an increase in peak acceleration, potentially caused by debris build up leading to imbalance within the fan. This imbalance indicated a potential bearing fault.
Upon inspection, excessive debris was discovered. During regularly scheduled downtime, the fan was taken offline and the blades were pressure washed to remove build-up. Following this cleaning, peak acceleration returned to a healthy level before a failure could occur.
