Air
Life
®
nCPAP Driver Service Manual
2008, Cardinal Health
Page 70 of 81
15.
TROUBLESHOOTING
The following section contains tables that define the Alarm and Warning Conditions that may be
encountered.
15.1 Alarm Details and Actions
The following table defines the potential Alarms that may appear during the Power-On Self
Test and during Patient Treatment Mode (the main screen). The alarm description, priority
(low, medium, high), alarm indicators and suggested action to most likely remedy the
condition are also included.
Alarm
Priority
Indication
Suggested Action
Elevated Pressure (2
cm H
2
O over Set
Value)
Medium
• Audible alarm
• Yellow flashing Warning
LED
• Message Bar
• Check the exhaust tube for occlusions or restrictions
Low Pressure (2 cm
H
2
O under Set
Value)
Medium
• Audible alarm
• Yellow flashing Warning
LED
• Message Bar
• Check for leaks in the tubes and circuit, or in the nasal
prongs and mask
• Check supply gases
High Pressure (
≥
12
cm H
2
O for 2
seconds or
≥
18 cm H
2
O
instantaneously)
High
• Audible alarm
• Red flashing Fault LED
• Message Bar
• The patient delivery
valve closes and a relief
valve opens immediately
upon alarm. System
attempts to reinitiate
treatment every three (3)
seconds until the alarm
condition clears.
• Check the exhaust tube for occlusions or restrictions
Disconnect
(Table Based)
Medium
• Audible alarm
• Yellow flashing Warning
LED
• Message Bar
• The flow rate is adjusted
to Target Flow ± 2 lpm.
• Check for leaks or disconnections in the tubes and circuit,
or in the nasal prongs and mask.
Medium
• Audible alarm
• Yellow flashing Warning
LED
• Message Bar says “FiO
2
Limit”
• Check Supply Gases
• Restart driver to perform oxygen sensor calibration
% O
2
Alarms
(Utilizes an oxygen
time product. Time
product is defined
as: the variance
outside of this FiO
2
range multiplied by
the duration of the
variance.)
High
• Audible alarm
• Red flashing Fault LED
• Message Bar says “FiO
2
Warning”
• Check supply gases
• Restart driver to perform oxygen sensor calibration
