The complaint device was returned for evaluation.Incoming visual inspection found no anomalies.Technical visual inspection found no anomalies.Device evaluation identified that there was an occlusion.The pump assembly was refurbished with no new parts.The circuit boards were inspected.All pcbs were tested.The firmware was set to p.01.32.The device was calibrated.The front and rear connectors as well as the case was inspected for damage.The flow rate, gas calibration test, leak check, power on, and final visual inspection were tested and all passed.The root cause was determined to be the defective pump assembly.This type of event will continue to be monitored.
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