(b)(4).A vyaire medical field service representative (fsr) evaluated the device onsite.The fsr found that the driver displacement indicator (ddi) was faulty and would not respond consistently when the start/stop button was pushed.The fsr replaced the ddi board, performed the 2k preventative maintenance checkout, checked the dc voltages, calibrated the pressure transducer, checked the bulkhead pressures, calibrated the driver displacement indicator, completed the alarms test, and performed the patient circuit calibration and performance check.The device meets manufacturer's specifications.
|