Suspect high overall values on a Wi- careTM system Menu Suspect high overall values on a Wi-careTM system A predictive maintenance department at a chemical customer in Antwerp was alarmed by high overall values on their Wi-careTM system, installed on a titanium exhaust fan on their production units. Monitoring Tools Chemicals 19 June 2018 The measurement history and trend data did not show anything in particular. Amplitudes did vary a lot over time as you can see in the plot on the right.The imbalance value of the fan was low and acceptable. At moments when the overall value was high, a 35 Hz component was showing up in the spectrum with amplitudes over 10 mm/sec. Sometimes, the amplitudes were above 20 mm/sec and absolutely not acceptable. A transient measurement with AMS 2140 showed a

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