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2. Verify the High Tidal Volume Alarm
This procedure verifies that the High Tidal Volume alarm is working properly. For Passive and Active Flow circuits, this will verify the High Vte alarm. For Active PAP circuits, this will verify the High Vti alarm. It assumes that you have attached the test lung, verified the ventilator settings, and turned on ventilator power as described in the Initial Setup section.
A. Change Alarm Ventilator Setting
Modify the High Tidal Volume alarm setting to match the one shown below in Table 3.
Setting | Value |
High Vte/High Vti | 50 ml |
B.Verify the Alarm
Wait up to 40 seconds and verify the following alarm signals:
•• The High Priority audible indicator sounds
•• A red light flashes on the Alarm Indicator/Audio Pause button
•• The High Tidal Volume alarm condition appears on the screen, highlighted in red
C.Modify Ventilator Alarm Settings
Modify the High Tidal Volume alarm setting to match the one shown below in Table 4.
Table 3 - High Vte/Vti Alarm Setting
Note: Do not use the “Reset” button to manually reset the alarm. Instead, use the “Modify” button to change ventilator settings. This applies to all tests.
Setting | Value |
High Vte/High Vti | 500 ml |
|
|
D.Verify Reset
Wait 40 seconds and verify the following
•• The High Priority audible indicator has stopped sounding
•• The red light on the Alarm Indicator/Audio Pause button has stopped flashing
Table 4 - Modify Vte/High Vti Alarm Setting
