Sections b1, d4, e3, e4, h4: additional information.Sections d10, h1, h3: correction.Manufacturer's investigation conclusion: the reported event of a humming noise from the motor was not confirmed; however, the reported event of blank console display and a drop in speed was confirmed.The centrimag 2nd generation primary console was returned for analysis.A log file was downloaded from the console.A review of the downloaded log file showed events spanning approximately 12 days ((b)(6) 2019 ¿ (b)(6) 2019 per time stamp).The console was operating the motor at a speed of ~3700 rpm with a flow ~3.4 lpm.On (b)(6) 2019 at 06:46, the sub fault ¿sf_ifd_shutdown_detected¿ activated and triggered the alarms ¿system alert: s3¿ and ¿flow signal interrupted: f2¿.The speed dropped to ~3200 rpm.The ¿motor disconnected: m2¿ alarm activated in the same time stamp as well.The motor and flow dropped to 0 rpm and 0 lpm respectively.The alarms were able to be muted and cleared.The console was forwarded to the service depot for analysis.The returned console was evaluated and tested.The reported event was unable to be reproduced.The console was run for an extended period of time with a test motor and with the returned and associated motor and flow probe.No alarms or issues with the flow or the screen, occurred at any time.The console functioned as intended.A successful battery maintenance was performed.Per field action ¿fa-q318-mcs-1¿ (see mfr.Report number 2916596-2019-02513), it was confirmed that the new backup system warning label was present on the back of the console.Reports of similar events have been documented and corrective action had been initiated to investigate the issue further.The investigation has determined that the issue is not related to a 2nd generation primary console related issue.Reports of similar events will continue to be tracked and monitored.No further information was provided.The manufacturer is closing the file on this event.
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