PROPRIETARY AND CONFIDENTIAL DRAFT 5 Feb 04
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13. To check the Inspiratory:Expiratory (I:E) ratio, measure the inspiratory and expiratory phase times,
and divide the expiratory phase time by the inspiratory phase time. The result should be
approximately 2.0.
14. To check the desired breath rate, count the number of breath cycles per minute.
15. To check inspiratory and expiratory resistance, measure flow and pressure at the patient connection
port. Resistance must not exceed 0.6 kPa (6 cm H
2
O) at 5 LPM.
Blended Gas Supply (Optional)
WARNING:
If either the air or oxygen gas source pressure is reduced, creating a pressure differential of 207
kPa (30 psi), the microblender alarm sounds. This condition can alter the FiO
2
and flow output
from the microblender. Infant injury could occur.
WARNING:
Always operate the low flow microblender with medical grade gases. Failure to do so could
result in personal injury.
WARNING:
Use air inlet water filters with the low-flow microblender. Replace them in accordance with the
manufacturer’s recommendation. Failure to do so could result in infant injury or equipment
damage.
WARNING:
Monitor the concentration of oxygen provided and the partial pressure of oxygen within the
patient’s blood (PaO
2
). Failure to do so could result in personal injury.
1. Turn the precision Blender knob to ensure free rotation.
NOTE:
If the pipeline, cylinder oxygen, or air supply is removed, the Blender alarm sounds.
2. Install the pipeline, or cylinder oxygen, or air supply.
3. Set the blender to the desired oxygen concentration.
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