Operational Verification Checklist and Functional Testing
9-6 User Manual
DMR V4C 3.3 (User Manual) V-4 06-May-2022
9.2.4 Test 4 — FiO
2
Alarms Test
To perform an FiO
2
Alarms Test, do the following:
1. Ensure V4C-O2E Oxygen Mixer is installed per Section 4.1, Installation and Assembly. Ensure the venti-
lator is set-up per its instruction manual.
2. Connect the patient end of the patient circuit to a test lung.
3. Calibrate the FiO
2
sensor per the manual of the compatible ventilator or FiO
2
sensor. A single step cal-
ibration can be used for this test.
4. Set the ventilator to the following settings:
• P A/C mode
• Breath rate: 15
• IP: 14
• PEEP: 9
• Rise time: 1
• Insp time: 0.8
5. Set the High FiO
2
alarm to 80% and the Low FiO
2
alarm to 40%.
6. Press the VENTILATION ON/OFF key to start ventilation.
7. Using the adjustment knob turn the knob all the way to the right.
8. Wait for FiO
2
to surpass alarm threshold.
9. Wait 45 seconds.
10. Confirm the High FiO
2
alarm triggers.
11. Turn the adjustment knob all the way to the left.
12. Wait for FiO
2
to dip below alarm threshold.
13. Wait 45 seconds.
14. Confirm the Low FiO
2
alarm triggers.
Note:
If during this test the Check FiO
2
Sensor alarm sounds, recalibrate the sensor and repeat the test.
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