Alarm tests
Test the system to verify that alarms are functioning.
If an airway module is installed, the FiO2 readings are taken from the
module instead of from the O2 cell. A sample line must be connected
from the airway module to the breathing circuit to test the O2 alarms.
1.
Connect a test lung to the patient connection.
2.
Start a case.
3.
Set the Bag/Vent switch to Vent.
4.
Set the O2 concentration to 30%, and allow the O2 reading to
stabilize.
For machines configured to individual gas control, set the O2
flow to approximately 500 ml/min and Air flow to approximately 5
l/min.
5.
Test the O2 alarms:
•
Set the
FiO2 Low
alarm limit to 50%. Make sure an
FiO2
low
alarm occurs.
•
Set the
FiO2 Low
alarm limit back to 21% and make sure
that the
FiO2 low
alarm cancels.
•
Set the
FiO2 High
alarm limit to 50%.
•
Push the O2 flush.
•
Make sure the
FiO2 high
alarm occurs.
•
Set the
FiO2 High
alarm limit back to 100%. Make sure that
the
FiO2 high
alarm cancels.
6.
Test the
MVexp low
alarm:
•
Set the
MV Low
alarm limit to greater than the measured
minute volume.
•
Make sure that a
MVexp low
alarm occurs.
•
Set the
MV Low
alarm limit to
Off
.
7.
Test the
Ppeak high
alarm:
•
Set
Pmax
to less than the peak airway pressure.
•
Make sure that the
Ppeak high
alarm occurs.
•
Set
Pmax
to the desired level.
8.
Test the
PEEP high. Blockage?
alarm:
•
Set the APL valve to 70 cmH2O.
•
Set the Bag/Vent switch to Bag. Mechanical ventilation
stops.
•
Block the patient connection and push the O2 flush button.
•
Make sure that the
PEEP high. Blockage?
alarm occurs
after approximately 15 seconds.
Note
7 Alarms and troubleshooting
2076152-001
7-15
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