Instructions for Use | Alarms and System Messages
Alarms and System Messages
47
during active
alarm
Monitored parameters and alarms that use the flow measurement such as tidal volume will not
function.
Monitored parameters and alarms that use the pressure measurement will continue to function.
E
XTERNAL
F
LOW
S
ENSOR
R
EVERSED
Priority
High
Why it occurs
The external flow sensor is connected backwards during active therapy.
What to do
Check the sensor position. The arrow direction should align with the air delivered to the patient.
Requirements
Active flow or dual limb circuit
Device
performance
during active
alarm
In volume modes, device will not accurately control volume. The peak inspiratory pressure will
continue to increase.
In pressure modes, therapy will be unaffected.
All monitored parameters and alarms will continue to function.
A
CTIVE
E
XHALATION
V
ALVE
F
AILED
Priority
High
Why it occurs
The active exhalation valve is stuck closed.
What to do
•
For a single-limb active circuit, check all connections to the valve and check that the valve is clear.
•
For a dual limb circuit, check that the valve is clear..
Requirements
Active flow or dual limb circuit
Device
performance
during active
alarm
The alarm is automatically resolved and the device continues to operate.
C
HECK
A
CTIVE
E
XHALATION
P
RESSURE
C
ONTROL
L
INE
Priority
High
Why it occurs
The active-exhalation pressure control line is not connected, becomes disconnected, or contains water
droplets that affect the active exhalation valve line pressure reading.
What to do
Inspect the line. Empty or replace it if necessary.
Requirements
Active flow or dual limb circuit
Device
performance
during active
alarm
Therapy delivery will be compromised.
All monitored parameters and alarms will continue to function.
P
ROXIMAL
P
RESSURE
L
INE
D
ISCONNECTED
Priority
High
Why it occurs
The proximal pressure line is not connected.
What to do
•
Verify the proximal pressure line is connected properly at both ends and the line is clean and
untangled.
•
Ensure the main circuit is connected properly and does not have large leaks.
•
Ensure the exhalation valve is intact.
Requirements
Dual limb, active PAP, or active flow circuit
Device
performance
during active
alarm
The alarm is automatically resolved when the proximal pressure line is connected properly.
The device continues to operate.
O
XYGEN
R
EGULATION
Priority
High
Why it occurs
The flow measured FiO
2
is not within 10% ± 3% of the FiO
2
setting.
What to do
•
Verify the oxygen blender is connected properly.
