(b)(4).The carefusion field service engineer evaluated the ventilator and found the mean airway pressure was reading lower than the flow analyzer and was fluctuating.Cleaned and reseated the connection to the pressure meter.Calibrated the airway pressure monitor transducer.Calibrated the pneumatics section after finding the bias flow was out of spec.Tightened loose nut and cross bolt on the min paw thumbwheel.Completed alarms checkout.Passed patient circuit calibration and vent performance check.No fluctuations and all readings within specifications.(b)(4).
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