The device was not returned to the mfr for physical evaluation and the failure mode cannot be confirmed.A valve was replaced as a preventative measure during field service investigation.After the valve was replaced, the machine passed testing and was deemed ready for use.An investigation of the device manufacturing records was conducted by the manufacturer.There were no deviations or non-conformances during the manufacturing process.In addition, the device record review confirmed the labeling, material, and process controls were within specification.
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