Chapter 3 Ventilator Alarms
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3.4.2 System Alarms
Ventilator Inoperative Alarm
This occurs when the ventilator detects an internal error or a condition that may aect therapy. The
device will shut down if the cause of the failure indicates that the device cannot deliver therapy.
Pressure Regulation Alarm
This is a high priority alarm. It occurs when the ventilator cannot regulate pressure within an
acceptable accuracy. The device continues to operate.
Low Circuit Leak Alarm
This is a high priority alarm. It occurs when the device detects that the exhalation port is partially or
fully occluded.
High Temperature Alarm
This is a high priority alarm. It occurs when the device is close to reaching a high temperature limit.
The device continues to operate.
Loss of Power
This occurs when a complete power failure has occurred and power was lost while the device was
providing therapy.
Low Battery Alarm
The Low Battery alarm occurs when the battery is low or nearly depleted. This alarm occurs in two
stages. When approximately 20 minutes of battery run time remains, a medium priority alarm is
generated, and the device continues to operate. If no action is taken and the battery continues to
deplete, the alarm escalates to a high priority alarm when approximately 10 minutes of battery run
time remains.
AC Power Disconnected Alarm
This is a medium priority alarm. It occurs when the AC power source was lost, and the device has
switched to DC (battery) power. The device continues to operate. The alarm terminates when the
ventilator begins operating from AC power again.
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