Investigation summary: the reported s3 and m5 alerts as well as flow readings of 0 lpm were confirmed through the evaluation of the log file data downloaded from the returned centrimag 2nd generation primary console, serial number (b)(4); however, no device-related issues were discovered during the evaluation of the returned primary console and a specific cause for the reported event could not be conclusively determined through the investigation of the returned device.It was reported that the centrimag system produced s3 (system alert) and m5 (set pump speed not reached) errors while supporting a patient.At the time the alerts were active, there was reportedly no flow displayed.The motor was reportedly making a loud ¿whirring¿ noise and was very hot to the touch.An exchange was made to a new console and motor and the alarms subsequently resolved.The log file retrieved from the 2nd generation primary console, serial number (b)(4), contained data from the time of the reported event from 03nov2018 ¿ 04nov2018, according to the timestamp.At the time of the reported event, the console was operating a motor at approximately 4400 rpm with a flow of approximately 6 lpm.On 04nov2018 at 7:12 pm, the log file captured an active s3 (system alert) alert followed by a reduction in pump speed to approximately 3200 rpm and an active m5 (pump speed not reached) alert.During this event, the flow reading reduced to 0 lpm.Pump speed remained at approximately 3400 rpm with a flow reading of 0 lpm until the motor was disconnected and the pump was removed from the system at 7:17 pm.During the s3 and m5 alerts, no full pump stoppage events occurred.The console continued to support the system but at a reduced speed of approximately 3200-3400 rpm.The returned 2nd generation primary console was evaluated by abbott technical services personnel under work order (b)(4).The reported complaint was not confirmed.The returned console was tested with the returned flow probe used during the reported event and the report of s3 and m5 alerts associated with no flow was not reproduced during testing.The unit ran for several days and no error messages were produced.No other issues were found during the evaluation of the returned components.A full functional checkout was performed and the unit passed all tests.The returned device was found to function as intended and the root cause for the reported event could not be conclusively determined.The primary console was returned to the rental pool.No further information was provided.The manufacturer is closing the file on the event.
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