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If within the 40 minute warm-up period, allow the driver to complete the scheduled
calibration routines and re-test.
Ensure that the independent O
pressure that the measurement is taken). Set the FiO
the results displayed by the independent sensor. Note that the Driver is designed to only
deliver Air when set to 21% and only pure Oxygen when set to 100%.
CPAP and Flow Rate Accuracy: This test is performed to ensure accuracy of the delivered CPAP level
and the flow rate exiting the Driver.
28. Set the Driver CPAP level to 5 cm H
stabilize.
29. Record the pressure readings from the Driver's LED bar graph, Driver LCD, and from an
appropriate independent Manometer.
30. Verify that each reading is within ± 1 cm H
31. If all values are within the stated tolerance, then circle PASS. Otherwise circle FAIL.
32. Record the flow rate as measured by the Driver (on LCD display) and by an independent flow
meter.
33. Verify that the flow rate measured by the Driver on the LCD display is within +/- 2 lpm of the flow
measured by the independent flow meter. The accuracy of the independent flow meter must be
considered by adding its measurement tolerance to the stated accuracy of the Driver in order to
properly disposition the results. Note: the "Target" flow is only a reference point for the device and
does not need to be calibrated.
34. If all values are within the stated tolerance, then circle PASS. Otherwise circle FAIL.
35. Repeat for CPAP settings of 3 and 8 cm H
36. If CPAP levels fall below specification, ensure that the prongs are occluded and all connections on
the circuit, generator, and prongs are secure and leak free.
Low Source Pressure Alarm Tests: This test verifies that the source gas inlet pressure sensors and
alarm modes are operational.
37. Set the FiO
to 60% and allow ~ 60 seconds for the valves to adjust.
2
38. Disconnect the air source.
39. Verify an audible alarm occurs (High priority, red flashing).
40. Verify that 'Air Pressure Low' appears in the message bar (alternating between low air pressure and
high FiO
). Note that in the absence of air (or when the Driver detects a low air source pressure),
2
the Driver automatically switches to oxygen only.
41. Verify that CPAP pressure is maintained utilizing the oxygen source. Note that the FiO
100% and the High FiO
© © © © 2008, Cardinal Health
sensor has been calibrated properly (and at the same
2
O and allow approximately 60 seconds for the valves to
2
O of the Driver's Set Value.
2
O.
2
alarm will be active.
2
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AirLife
nCPAP Driver Service Manual
to 21% and/or 100% and evaluate
2
will be
2
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