Mindray A9 - Ventilator-Related Alarm Tests

5-19
5.13.4 Ventilator-Related Alarm Tests
5.13.4.1 Setup
1. Ensure that the gas pressure for O2, N2O, and air is within the specified range.
2. Perform the power-on tests according to the instructions on the screen. Ensure that the tests
succeed.
3. Attach a breathing circuit and a manual bag.
NOTE
 For testing purposes, always use a reusable breathing circuit.
4. Attach an adult test lung to the Y-piece of the breathing circuit.
5. Set the O2 flow to 2 L/min and disable the N2O and air flows.
6. Set breathing parameters.
Parameter Setting
Patient Size Adult
Ventilation Mode VCV
Vt 600
Rate 8
I:E 1:2
Tpause 10
PEEP Off
Plimit 50
7. Start ventilation.
5.13.4.2 FiO2 Too Low Alarm Test
1. Set the FiO2 low alarm limit to 50%.
2. Set the air flow to 5 L/min.
3. Disable the O2 flow.
4. Verify that the following FiO2 low alarm signals activate within three ventilation cycles:
 The FiO2 Too Low message appears on the screen.
 An alarm tone sounds.
5. Set the FiO2 low alarm limit to 18%.
6. Verify that the alarm signals cease.
5.13.4.3 FiO2 Too High Alarm Test
1. Set the FiO2 high alarm limit to 50%.
2. Set the O2 flow control valve to 5 L/min.
3. Disable the air flow.