Airon pNeuton A, Operator'S Manual

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pNeuton Ventilator 4 - 5
Oxygen Control
The ventilator uses internal venturi systems which provide
the oxygen concentration delivered to the patient. See
Section 7 for a complete description of these systems. It is
recommended that an external oxygen analyzer always be
used to verify oxygen delivery.
Hypobaric Operation
The ventilator will operate normally at altitudes up to
15,000 feet. Changes in altitude will not affect pressure
settings. However, delivered tidal volume increases and
respiratory rate decreases with increasing altitude. This is
due to lower barometric pressure than ventilator calibration
at standard sea level.
To compensate for the effect of changing altitude on tidal
volume and respiratory rate, use an external spirometer to
verify tidal volume accuracy. Adjust the Tidal Volume and
Respiratory Rate controls to the desired value as
measured by the spirometer rather than the markings on
the control panel.
Disconnect Alarm
The ventilator has a patient circuit disconnect alarm
system. This system cannot be turned off. If a circuit
disconnect is sensed, the visual indicator on the front
panel will illuminate and the audible alarm will sound.
The alarm will activate as soon as an oxygen source is
turned on to the ventilator. You may silence the alarm for
1 minute by pressing the Reset / Silence button. Attaching
the ventilator to a patient and starting ventilation will
automatically reset the alarm system and turn off the
audible and visual indicators.