11
USER INSTRUCTIONS
Alarms
Alarm Priority: Medium
ALARM CONDITIONS
REQUIRED ACTION
The Disconnection alarm
activates when the humidifier detects a disconnection of the
inspiratory circuit�
Delay: < 10 seconds
Connect inspiratory circuit and fully
insert the chamber for complete
connection�
The No Water alarm
activates when the humidifier detects that the chamber is empty or
almost empty of water�
The time-to-alarm signal generation is dependent on operating mode set-point and flow
rates as these determine the water evaporation rate�
Delay: < 60 minutes
Replace the empty water bag�
The Check Setup alarm
activates when the humidifier detects a repeated elevated
temperature condition at the chamber outlet�
The alarm threshold is 43 °C�
The time-to-alarm signal generation is dependent on the flow rates�
Delay: > 5 minutes
Check the dryline and expiratory limb
connect to the correct ports on the
flow source�
The Low Temperature alarm
activates when the humidifier detects a low temperature
condition at the patient end or chamber outlet for a continuous period of time�
The alarm threshold is 2 °C below the set-point temperature�
The time-to-alarm signal generation is dependent on the flow rates�
Delay: > 10 minutes
Check the humidifier is receiving flow
within the range stated in this user
instruction�
Check the humidifier setup�
The High Temperature alarm
activates when the humidifier detects a high temperature
condition at the patient end�
The alarm threshold is a patient end temperature of > 43 °C�
Delay: < 30 seconds
Check the humidifier is receiving flow
within the range stated in this user
instruction�
Check connections to the flow source�
Check the humidifier setup�
The Cartridge Disconnection alarm
activates when the humidifier detects that the sensor
cartridge is not electrically connected�
Delay: < 10 seconds
Connect the sensor cartridge�
The Tube Fault alarm
activates when the humidifier detects a potential fault in the
breathing circuit�
Delay: < 10 seconds
Replace the breathing circuit when safe
to do so�
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