A5/A3™ Service Manual 046-001141-00 3 - 41
Periodic Maintenance Alarms and Fail safe Functions
3.12.4 Peak Pressure Alarms Test
1. Set the PEAK low alarm to the lowest setting.
2. Set the PEAK high alarm limit set point about 5 to 8 digits below the Peak Pressure displayed on
the screen.
3. Verify the following (high) peak pressure alarms activate:
a. Paw Too High message appears on the screen.
b. An alarm tone sounds.
c. Inspiration ends and expiration begins as the pressure meets the high alarm limit.
4. Set the PAW high alarm limit set point to 65 (cmH2O).
5. Verify the Paw Too High message disappears
6. Set the PAW low alarm limit set point to 50 (cmH2O).
7. Verify the following (low) peak pressure alarms activate:
a. Paw Too Low message appears on the screen.
b. An alarm tone sounds.
8. Set the PAW low alarm limit to 12 (cmH2O).
9. Verify the Paw Too Low message disappears.
3.12.5 Minute Volume Alarm Test
1. Set the MV Low alarm limit set point to the highest value.
2. Verify the following alarms activate:
• MV Too Low message appears on the screen.
• An alarm tone sounds.
3. Set the MV Low alarm limit to minimum setting.
4. Verify that the MV Too Low message disappears.
5. Set the MV High alarm limit set point to the lowest value.
6. Verify the following alarms activate:
• MV Too High message appears on the screen.
• An alarm tone sounds.
7. Set the MV High alarm limit set point to the highest value
8. Verify that the MV Too High message disappears
9. Set the mechanical Auto/Manual switch to MANUAL.
10. Set all fresh gas flows to 0.
11. Press “discharge” to enter the standby mode.
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