GE Datex-Ohmeda Aisys Carestation Reference Manual page 85

Mechanical inspiration
(EZchange and
condenser
OFF)
D
P
AP Airway Pressure
D Drive gas
FG Fresh Gas
P
Pilot pressure
V
Bag/Vent switch to Vent
1 Flow to absorber
2 Bypass flow
3
Inspiratory flow
Figure 2-40 • Mechanical inspiration with EZchange Canister and Condenser OFF
M1046983 04/08
The Bag/Vent switch closes the manual path (V). Pilot pressure (P) closes the
exhalation valve.
Drive gas (D) pushes down on the bellows. Gas flows from the bellows (1), through the
EZchange module bypassing the absorber (2), and through a unidirectional valve
(inspiratory check valve) to the patient (3).
During inspiration, fresh gas flows into the inspiratory limb, upstream of the inspiratory
check valve.
D
1
V
2 Theory of Operation
AP
FG
2
3
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