Air
Life
®
nCPAP Driver Service Manual
2008, Cardinal Health
Page 38 of 81
12.2
Replace the Oxygen Sensor Filters
The nCPAP driver has two (2) filters (two required) that provide filtration and signal
conditioning for the ultrasonic Oxygen Sensor. They are necessary for stable operation of the
Oxygen Sensor and FiO
2
control system. Replace these filters according to the maintenance
schedule.
1.
Use your fingers to unscrew the white luer lock ring from the Oxygen Sensor Filters.
2.
Unscrew the Oxygen Sensor Filters from the Oxygen Sensor Elbow.
3.
Lock two (2) new Oxygen Sensor Filters together by twisting the mating ends
together about 1/2 turn until snug.
4.
Attach the Oxygen Sensor Filters to the Oxygen Sensor Elbow by twisting the filters
1/2 turn until snug.
5.
Screw the white Luer lock ring to the conjoined Oxygen Sensor Filters
6.
Ensure all joints have remained tight.
When replacing the Oxygen Sensor Filters, ensure that the components are secured finger tight.
Luer Lock
Ring
Filters
From
Manifold
To O
2
Sensor
