Functional Tests
User Manual 9-3
DMR V4C 3.3 (User Manual) V-4 06-May-2022
9.2 Functional Tests
WARNING:
Never perform tests that could disrupt ventilation while the patient is being ventilated. Always
provide an alternate means of ventilation where applicable.
WARNING:
If at any time it is observed that excessive and consistent gas is exiting through the vents at the
back of the Oxygen Mixer, call for maintenance.
WARNING:
If at any time a leak is suspected from or inside the V4C-O2E Oxygen Mixer, terminate use and call
for maintenance. Excessive oxygen consumption may be indicative of a leak.
WARNING:
To reduce the risk of infection, wash your hands thoroughly before and after handling the Oxygen
Mixer or its accessories.
Table9-1.Operational verification checklist
1 Verify the proper appearance and cleanliness of the Oxygen Mixer.
☐ Pass
2 Verify all of the labels and markings on the Oxygen Mixer are clear and legible.
☐ Pass
3 Confirm the Oxygen Mixer's air intake filter is clean and correctly installed.
☐ Pass
4 Ensure the electrical connecting cable does not exhibit any signs of damage, such as kinks, breaks,
or damaged insulation, and is appropriately and securely attached to both the ventilator and
Oxygen Mixer.
☐ Pass
5 Ensure the gas connection tubing does not exhibit any signs of damage, such as kinks or breaks, and
that it is securely attached to the gas intake of the ventilator.
☐ Pass
6 Ensure oxygen supply line is securely attached and that the oxygen pressure delivered is within
range specified in Section 2.7.
☐ Pass
7 Ensure the Oxygen Mixer, and particularly the side arms and handle, are securely attached to the
ventilator. Ensure screws are fully secured.
☐ Pass
8 Ensure the low pressure oxygen port of the ventilator does not have an oxygen source connected.
☐ Pass
9 Perform the Functional Tests. Refer to Section 9.2.
☐ Pass
10 Ensure the High and Low FiO
2
alarms are set on the compatible ventilator. It is recommended that
these alarms be set within ±5% of the required FiO
2
.
☐ Pass
11 Ensure the high and low VTE/VTI, the high pressure, the Max Rtot, bpm and any other applicable
alarms are set on the compatible ventilator based on the settings and mode being used.
☐ Pass
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