Power Alarms - ResMed Astral Series User Manual

Alarm
High leak
(Only possible on Double limb and Single limb
with intentional leak circuits)
Low FiO
2
(Only possible to test if the therapy has been
configured for supplemental oxygen use)
High FiO
2
(Only possible to test if the therapy has been
configured for supplemental oxygen use)
Using internal battery
Low battery
Critically low internal battery

Power alarms

CAUTION
Data cannot be saved while there is a Critically low battery or Battery inoperable alarm. Program
selections made while these alarms are active may be lost if the device is restarted. Recording of
ventilation data and alarms is suspended.
Alarm Activates when
Low battery Approximately 20 minutes of ventilation time remaining on internal battery power.
Critically low battery Approximately 10 minutes of ventilation time remaining on internal battery power.
Total power failure There is total loss of power due to failure of the internal battery, or a loss of external power while
the internal battery is removed.
Power disconnected The power source is changed from an external source to the internal battery.
Using internal battery The Astral device is powered on and is using battery power.
Battery inoperable The internal battery is faulty or has been removed.
Internal battery The internal battery is degraded and may not provide a reliable indication of remaining time.
degraded
Test procedure
1. Disconnect the patient interface from the circuit.
2. Start ventilation.
1. Turn off the supplemental oxygen.
2. Start ventilation.
1. Adjust supplemental oxygen to a higher flow rate.
2. Start ventilation.
1. Ensure the Astral device is connected to an external power source.
2. Power on the Astral device.
3. Disconnect the power cord.
1. Ensure the Astral device is powered on and is operating on the internal
battery.
Go to the Setup menu and select Device Config. Turn off the Auto power
2.
off and Backlight timeout settings. Refer to Adjusting device settings (see
page 20).
3. Wait for the internal battery to run flat. This will take over 10 hours from a
fully charged internal battery.
Testing the alarms
English 57