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Gas Exhaust The exhaust from the gas analyzer may be
connected to the system’s gas scavenger and
is referred to as atmosphere. In very low fl ow
applications, a circle system is often required to
return the sample gas to the breathing system.
This system prevents the bellows from slowly
collapsing.
Step 2 of the pre-use instructions to the user are
changed depending on which option is selected.
If the return is to atmosphere, the user will be told
to remove the sample line before performing the
pre-use test. If the return is to the breathing circuit
the user will be told to ensure the gas analyzer is
switched on and that the sample line is connected.
Enable Pre-Use Test Select this option to set a fi xed compliance value
to be set from 0.2 to 10.0 mL/cmH20 in 0.2
increments.
Touch Calibration Select this option to perform a touch screen
calibration.
TECH2
Service Menu
Select: Setup>Confi guration>Service Mode>TECH2
Ventilator Passwords
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