A dräger service technician was dispatched who could determine that the vacuum pump was faulty.The vacuum pressure is required to keep the ventilator piston diaphragm in place to avoid wrinkling.When this vacuum pressure drops below a certain threshold during an automatic ventilation mode the device shuts down automatic ventilation to prevent from serious damages to the system.The shut down is accompanied by a corresponding alarm to alert the user about this condition.When in this state, manual ventilation remains possible; monitoring is still functional as well.Reportedly the problem was rectified; the device is back in use.The ffr of the particular pump with the specific failure mode is extraordinarily low.Dräger finally concludes that the device responded as specified upon a deviation detected by the self-monitoring function of the software.The patient was manually ventilated, no health consequences have been reported.
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