Dräger Primus Series

• To begin monitoring without
ventilation and fresh gas ow
press the key while in standby.
• To return to standby: press the
key again and conrm using
the rotary knob.
Setting Fresh Gas
Concentrations
These may be preset in standby.
• Carrier gas: press and conrm
either N
2
O or Air (1).
• Oxygen concentration: press
O
2
%, set the concentration
with the rotary knob and
conrm (2).
• Fresh gas ow: press ow
l/min, set desired ow
and conrm (3).
• Fresh gas ow will start as
soon as a ventilation mode
is activated and is indicated
in virtual ow tubes on display screen.
10
3121
Operation