Datex-Ohmeda Avance User's Reference Manual page 130

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Scavenging the ACGO
sample flow
Scavenging from an
auxiliary manual
breathing circuit
Scavenging a gas
monitor sample flow
8-12
A sample of the fresh gas is diverted to the airway module or the O2
cell in the breathing system to show the O2 numerics on the screen.
This sample flow should be scavenged when an auxiliary manual
breathing circuit is used with N2O or volatile anesthetics. If
scavenging is not connected, the sample flow is emptied into the
room. To connect the scavenging:
1. Attach a circle breathing circuit to the inspiratory and expiratory
ports.
2. Occlude the breathing circuit by connecting the Y-piece to the
leak test plug located behind the expiratory port.
3. Check for clinically correct settings.
4. Check the position of the Bag/Vent switch.
If the Bag/Vent switch is set to mechanical ventilation mode,
the bellows fills slowly with the sample flow. When the
bellows is full, the sample flow goes to the AGSS.
(Mechanical ventilation does not start when the ACGO switch
is set to ACGO.)
If the Bag/Vent switch is set to the bag mode, set the APL
valve to MIN, and attach a bag. The bag fills slowly with the
sample flow. When the bag is full, the sample flow goes to the
AGSS.
Scavenge the exhaust if an auxiliary manual breathing circuit is used
with N2O or volatile anesthetics.
An auxiliary inlet is available for active and passive AGSS units. It
provides a female connection with 30 mm - 30 mm male connector
(or a 30 mm -19 mm male connector) into the auxiliary port under the
breathing system. Do not use these connectors as an outlet for
exhaust flow.
The auxiliary inlet is a convenience inlet to the air brake of active
AGSS units. There is a reservoir to capture exhaust flows higher than
the extract flow.
A separate exhaust hose is needed from the auxiliary manual
breathing circuit to the disposal point for all AGSS units.
Sample gas from a gas monitor can be scavenged using the sample
gas return port or the AGSS.
To scavenge from a gas monitor using the sample gas return
port, connect the tubing from the monitor to the sample gas return
port.
To scavenge from a gas monitor using the AGSS, connect tubing
from the monitor to the male luer inlet on the bottom of the AGSS
underneath the breathing system.
M1204616

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