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4.
ALARM SYSTEM
Alarms are delayed for 120 seconds after entering Patient Treatment Mode (the main screen)
in order to allow time for patient setup. If the patient setup takes longer than 120 seconds, the
alarms can be muted for an additional 120 seconds by pressing the Alarm Mute/Reset button
or the system can be placed into Standby Mode.
Whenever a patient is attached to respiratory care equipment, constant
assurance of warning for every malfunction that may occur in the system.
4.1
Non-Latching and Latching Alarm Signals
If all High Priority alarm conditions return to normal, the audible alarm turns off, the Red Fault
LED switches from flashing to steady lit and the Message Bar continues to display the alarm
condition(s). Pressing the Alarm Mute/Reset button turns off the Red Fault LED and clears the
Message Bar.
If all Medium or Low Priority alarm conditions return to normal, the audible alarm and Yellow
Warning LED clear automatically, and the Message Bar no longer displays the alarm
condition(s) and returns to display "System Active" to indicate normal operation.
4.2
Alarm Situations
The following describes the alarm situations that may occur during operation:
4.2.1
Supply Gas Pressure Alarm
An audible and visual High Priority Source Pressure alarm will activate if the inlet pressure
of one, or both, of the gas sources are outside of the specified gas supply range. The
alarm message will indicate the specific gas source that is out of specification. If a single
gas source goes out of range during operation, then only the remaining gas source will be
available (air or oxygen) and FiO
select either 'Air Only' or 'Oxygen Only' to allow the unit to operate in single-gas source
mode and mute the FiO
automatically return to normal operation (blending to the original FiO
problem is corrected and the source pressures are returned to within the specified range.
There is a 1-second delay for this alarm.
4.2.2 High Pressure Alarm
An audible and visual High Priority High Pressure alarm has dual limits. The first limit will
activate the alarm when the monitored pressure is greater than or equal to 12 cm H
two (2) seconds. The second limit will activate the alarm immediately when the monitored
pressure is greater than or equal to 18 cm H
electronic pressure relief solenoid and closes the patient delivery solenoid, which instantly
reduces the pressure in the patient circuit to zero. Approximately every three (3) seconds,
the system will reinstate flow. If the alarm condition has cleared, the unit will operate
© © © © 2008, Cardinal Health
attendance is required by qualified personnel.
The use of an alarm or monitoring system does not give absolute
2
alarms while the problem is corrected. The system will
2
AirLife
WARNING
blending will become inoperable. The user will be able to
O. This alarm automatically activates the
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®
nCPAP Driver Service Manual
setting) when the
2
O for
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