26 Using the ventilator
5.2 Selecting the ventilation settings
MEDUMAT
Standard a must
never be used
simultaneously
with a module as this
would make it impossible
to work to the selected
parameters.
The settings can be selected either before or after the
MEDUMAT Standard a is switched on. We recom-
mend selection before switching on to prevent
unnecessary waste of oxygen.
Air Mix/No Air Mix
In the case of a given indication, it is possible to
ventilate using pure oxygen or using mixed air.
1. For mixed air, set switch to
Air Mix.
The oxygen concentration administered will nor-
mally lie somewhere between 55% and 85% at
a ventilation pressure of 10 mbar. You can read
off the exact figure from relevant diagram (note
“11.5 O
2
content when using Air Mix“ on
page 72).
The
No Air Mix setting should be used when the
surrounding atmosphere is polluted or has a low
oxygen content or when the indication requires this.
2. Set Switch to
No Air Mix.
When the ventilator is switched from an air/oxy-
gen mixture (
Air Mix) to pure oxygen (No Air Mix),
the minute volume will vary only within the set
tolerances (note “11. Technical data“ on
page 68).
No Air Mix
Air Mix
No Air Mix
Air Mix
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