In October, vibration measurements were carried out on the Accommodation AC blower electric motor.
The initial results showed:
🔧 RMS velocity up to 6.88 mm/s at point H2
Not extreme at first sight — but the frequency analysis told a clearer story.
In the FFT velocity spectrum, a strong 1× rotational component of the blower was observed.
📊 What does it indicate?
A dominant 1× frequency in fan or blower systems typically points to mechanical imbalance or airflow disruption, often caused by:
dirt and deposits on the fan
loose mounting or structural instability
👉 In short: the system is no longer running “cleanly” — it is fighting itself.
Based on this pattern, we recommended:
🔧 cleaning of the fan
🔧 inspection and retightening of mounting bolts
✔️ The crew confirmed significant dirt accumulation in the motor and blower
✔️ Several fundamental bolts were found loose
✔️ After corrective work, vibration levels dropped noticeably
✔️ The 1× component in the spectrum significantly decreased
✅ Result: System stabilized. Risk eliminated. Potential motor damage avoided.
Estimated avoided cost: ~USD 3,150
What stands out in this case is not only the technical outcome — but the quality of collaboration.
We would like to sincerely thank the crew for:
🤝 precise feedback from onboard
🤝 fast execution of recommendations
🤝 strong communication loop with our analytical team
Because condition monitoring is never just about signals and spectra — it is about people turning data into action at the right time.