User Manual 5-3
DMR V4C 3.3 (User Manual) V-4 06-May-2022
WARNING:
Before starting ventilation, ensure that the V4C-O2E Oxygen Mixer and compatible ventilator are
properly assembled and that the system's air intake filter and cooling vents are not obstructed.
Refer to Section 2.6, Device Features for the locations of these features. Also ensure that the
patient circuit is of the proper configuration (double or single limb), properly connected to the
ventilator, and that the circuit hoses are neither damaged nor compressed and contain no
obstructions or foreign bodies.
WARNING:
The electrical connecting cable between the V4C-O2E Oxygen Mixer and the compatible ventilator
delivers power to the oxygen mixer. It will automatically begin oxygen delivery when the
ventilator enters an active ventilation state. Disconnecting this cable will cease power and oxygen
delivery to the V4C-O2E Oxygen Mixer.
WARNING:
Always measure the delivered oxygen with a calibrated oxygen analyzer (FiO
2
kit) that features a
minimum and maximum concentration alarm in order to ensure that the prescribed oxygen
concentration is delivered to the patient.
WARNING:
If using the V4C-560 FiO
2
kit, the FiO
2
sensor may drift out of calibration as the ventilator initially
warms; therefore, a two-step calibration is recommended whereby the sensor is first calibrated
cold and then re-calibrated once it has warmed. See Sections 5.1, FiO
2
Sensor Calibration and 5.2,
Changing FiO
2
During Ventilation Using a Compatible Ventilator for further instructions.
WARNING:
When setting FIO
2
do not overturn the oxygen knob. Stop once resistance is felt. See Figure 2-2 for
location of knob.
WARNING:
Do not use the V4C-O2E Oxygen Mixer at an atmospheric pressure or temperature outside of the
range stated in Section 2.7, Specifications. Using the Oxygen Mixer outside of the specified
temperature or atmospheric pressure range can affect the Oxygen Mixer performance and can
result in patient injury or death.
WARNING:
Do not cover the V4C-O2E Oxygen Mixer or place it in a position that affects proper operation,
including close to a heat source, on an uneven surface, or on a bed.
WARNING:
Do not expose the V4C-O2E Oxygen Mixer to direct sunlight for prolonged periods of time.
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