Air And Oxygen Inlet Screen Replacement - Cardinal Health AirLife nCPAP Hardware Service Manual

11.3

Air and Oxygen Inlet Screen Replacement

These filter screens (P/N P410895) should be replaced per the maintenance schedule or if the
driver exhibits low air and/or oxygen source pressures (indicating the possibility of a clogged
inlet screen). These 15-micron stainless steel screens filter out particulate matter that may be
present in the air and/or oxygen lines to protect the electronic sensors and proportional valves
inside the driver.
1. Remove the single #10 Allen-head
screw, located between the air and
oxygen fittings.
2. Slide the Inlet Block out of the
manifold, and locate the screen in
each manifold port.
3. Replace screens and reassemble the
Inlet Block. Be careful not to pinch or
damage the o-rings during reassembly
– the Inlet Block should slide in easily.
4. Secure the Inlet Block with the #10
Allen-head screw; tighten to a torque
of 15 – 20 in-lbs.
5. Inspect the two screens that were
removed from the driver. If the
screens show obvious amounts of
debris or discoloration, then consider
investigating the cleanliness of the
medical grade gases and increasing
the frequency of screen replacements.
© © © © 2008, Cardinal Health
AirLife
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nCPAP Driver Service Manual
Inlet Block
Inlet Screens