ZOLL AEV Operator's Manual page 103

3318 Low SpO2 Perfusion
Alarm triggers when the pulse oximeter determines the quality of the input signal is low due to excessive
motion or artifact. To resolve the alarm minimize patient movement and make sure the sensor is properly
applied.
Mitigation/Info: Signal Artifact, Minimize Patient Movement, Check Sensor Placement, Check Sensor Opera-
tion, **Turn Off Pulse Ox Monitoring**
3421 External Power Low / Disconnect
Alarm triggers when the external power (either AC or DC) drops below minimum level (~11 VDC as supplied
by either the AC/DC Power Supply or a direct DC source) or power is intentionally disconnected. Since the
device operates with either external power or using its internal battery this is a low priority alarm that clears
when the user presses the Mute button. Pressing the Mute button is the user's acknowledgement that the
device is operating on internal battery. If this alarm occurs and the user believes that the device is still con-
nected to external power the user should investigate the external power source and contact the service center
for additional information.
Mitigation/Info: Internal Battery Operation, Check Power Connection/Supply, Monitor Battery Status
3422 Battery Fault
Alarm triggers when the internal battery has been removed or communication between the battery and CPU
has failed. When external power is applied the device is capable of operation however, loss of external power
will result in loss of ventilation and a high priority alarm. Operating in this state should only be done when no
other alternatives are available.
Mitigation/Info: Battery Power Not Available, DO NOT Remove External Power!, Maintain External Power
**Contact Service Center**
3423 Battery Charging Fault
Alarm triggers when the battery charging circuit fails. When this alarm is active, the battery cannot be charged.
The device can only run with external power. If power is lost, ventilator will stop and a high priority alarm will
trigger. Operating in this state should only be done when no other alternatives are available. Contact the ser-
vice center for additional information.
Mitigation/Info: Ventilator Operating, Power System Needs Repair, Battery Cannot Charge, Maintain External
Power, **Contact Service Center**
3430 Low Battery
Alarm triggers when the device detects that there is <30 minutes of battery operation remaining and no exter-
nal power is connected. The user should seek a source of external power and/or plan to provide manual venti-
lation. Attaching external power will immediately clear the alarm however, alarm #3431 will occur in its place,
see below.
Mitigation/Info: <30 Minutes Operation, Connect External Power, Ensure Ability to Manually Ventilate, **Con-
tact Service Center**
3431 Low Battery
This triggers when external power is connected to a device that has an internal battery that has drained to a
low battery status. The device is warning the user that in the event of an external power failure the device has
<30 minutes of backup. This alarm will resolve when the internal battery charge has >30 minutes of operation.
The user must maintain constant monitoring of the device and the patient during this period.
Mitigation/Info: <30 Minutes Operation, Operating With External Power, Continue Charging With External
Power, Ensure Ability To Manually Ventilate, **Contact Service Center**
906-0731-01-05 Rev. C ZOLL Ventilator Operator's Guide 5-23