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A North America-based chemical company was experiencing frequent failures on a chemical pump. The failures could not be explained as the normal 30 day vibration predictive maintenance interval did not show any abnormal operating conditions.
The customer elected to install an i-ALERT device to monitor the pump. Within 187 hours (about a week) of operation two abnormal spikes in vibration in all three axis was record by the i-ALERT device. From the time stamp of the alarm condition, the root cause of the problem was traced back to low tank level feeding the pump, causing cavitation. Because the low level alarm for the tank was set to low the operator was never alerted that there was a problem.
The i-ALERT device was able to provide both early detection of a possible failure event and provide enough information to enable a correct action.
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