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Alarm tests
2067226-001
Test the system to verify that alarms are functioning.
Note
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:
•
Close the APL valve.
•
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.
9.
Test the Ppeak low. Leak? alarm:
7 Alarms and troubleshooting
7-15
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