Date of event: (b)(6) 2018.Date of report: 08aug2019.The manufacturer's field service engineer (fse) was dispatched to the site and evaluated the unit and the reported issue was confirmed.The customer reported that the device was being drawn from a cold warehouse and tested immediately.It was identified that the ventilator have not had time to warm up to operating temperature when the customer run the unit per operating temperature range listed in service manual.Root cause: the ventilator was returned for failure investigation (fi) and was tested, no failures were identified.This mdr has been reassessed as reportable after a request from the fda on march 1, 2019 to review complaints from 29 nov 2017 to 29 nov 2018.As this has been reassessed, it will appear to be a late mdr.
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