Air Handling Unit Fan Bearing Defect
An AHU supply fan in a pharmaceutical R&D center experienced an anomaly detected by a wireless monitoring system and identified an early-stage bearing defect in the fan’s motor, allowing for prompt corrective action.
In a critical environment like a pharmaceutical plant, ensuring the smooth operation of equipment is paramount. In this case study, we focus on an AHU supply fan that helps maintain optimal clean room conditions within a pharmaceutical R&D center. The fan, driven by a 40hp, 4-pole motor with grease-lubricated bearings, plays a primary role in controlling air quality and temperature regulation. Shortly after installing the wireless monitoring system in the facility, an anomaly was detected within the AHU supply fan.
Petasense’s diagnostic insights use a rule-based system to review trend and spectrum charts and help automate the identification of particular fault modes in various asset classes. In this case, Petasense analysts were able to quickly verify the abnormal vibration patterns indicative of an early stage bearing defect in the motor of the AHU supply fan. Leveraging parameters such as Acceleration RMS, demodulation (also known as envelope), and crest factors, the system accurately assesses the severity of the fault and formulates targeted maintenance recommendations, enabling prompt corrective action.
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