Air
Life
®
nCPAP Driver Service Manual
2008, Cardinal Health
Page 72 of 81
Alarm
Priority
Indication
Suggested Action
Flow/Pressure
Sensor Failure
Not an alarm
Notification only
• Audible alarm
• Yellow flashing Warning
LED
• Sensor Calibration
Failure Warning Screen
• Make sure patient is disconnected from circuit and restart
driver.
• Follow on-screen directions
Non-Fatal Software
Fault
High
• Audible alarm
• Red flashing Fault LED
• Message Bar
• Record the Fault code
• Follow on-screen directions
Fatal Software Fault High
• Continuous Audible
alarm
• Red Fault LED
• Warning Screen
• Driver will cease operation
• No Patient flow
• Remove Patient from driver
• Record the Fault code
• Follow on-screen directions
• Remove driver from service
15.2 Warning Screens
The following table defines the potential Warning Screens that may appear during the Power-
On Self Test and during Patient Treatment Mode (the main screen). The most likely fault
modes and potential actions to remedy the condition are also included.
Warning Screen
Description
Possible Fault
Suggested Action
Power-On Self Test Warning Screens
Air and/or Oxygen gas
sources are not
connected or below the
minimum specified
range
Connect and/or adjust the
gas source inlet pressure(s)
to within the specified
tolerance of 41 – 66 psig
Clogged inlet filter
screens
Inspect and/or replace the
inlet filter screens
Indicates that the inlet gas
source (or sources, as
indicated in the specific
Warning Screen) is/are
below the minimum
specified operating range.
Faulty or defective inlet
pressure sensor(s)
Service and/or replace the
Manifold Assembly
Air and/or Oxygen gas
sources are above the
maximum specified
range
Adjust/regulate the gas
source inlet pressure(s) to
within the specified
tolerance of 41 – 66 psig
Indicates that the inlet gas
source (or sources, as
indicated in the specific
Warning Screen) is/are
above the maximum
specified operating range.
Faulty or defective inlet
pressure sensor(s)
Service and/or replace the
Manifold Assembly
