The infinity acs workstation cc consists of two parts, the ventilation unit v500 and the cockpit unit c500.It was initially reported that only the cockpit c500 shut down during a case.In the course of manufacturer investigation the logfile was analyzed and it could be derived that the reported shut down was not limited to the cockpit c500.The ventilation unit performed a warmstart on the reported date of event as well.As a safety feature of the system, the safety software analyses and verifies proper function of the device.If the safety software detects an internal failure concerning the ventilator, a restart of the ventilation unit will be triggered with accompanying alarm.The restart sequence lasts for a maximum of 8 seconds.During that time the emergency-breathing valve remains open to ambient allowing for spontaneous breathing.No other entries have been logged which would indicate the reason of the logged warmstart of the ventilation unit.The exact root cause could not be identified based on the available information.
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