Gas Flow Theory of Operation
1 - 36 046-006272-00 A7™ Service Manual
1.3.4.14.1 Mechanical Ventilation
FIGURE 1-38
1.3.4.14.1.1 Drive Gas Path
In case of mechanical ventilation, during inspiration, gas flows through the Auto/Manual ventilation
switch (54), sodalime absorber canister (integrating 44 and 43), inspiratory check valve (45), O2
sensor, airway pressure gauge (46), and inspiratory flow sensor (47) to the patient. During expiration,
gas flows through the expiratory flow sensor (48), expiratory check valve (45), and Auto/Manual
ventilation switch (54) to the bellows. Airway pressure is monitored by the airway pressure gauge
(46).
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