ENGLISH
POSITIVE PRESSURE
AMBIENT AIR VERSION
Positive pressure is activated by closing the ambient air hatch by pushing the
exhalation valve cover against the face mask. To shut o positive pressure and
breathe ambient air, simultaneously press down the indicator arm and push the
exhalation valve cover away from the face mask. [Fig. 1 and Fig. 2]
Fig. 1 Activated positive Fig. 2 Ambient air mode
pressure
FIRST BREATH VERSION
Positive pressure is automatically activated by the rst breath and can be switched o
manually by pushing the liing arm on the breathing valve away from the diaphragm
cover. [Fig. 3 and 4]
Fig. 3 Activated positive Fig. 4 Positive pressure
pressure switched o
CONNECTING AND DISCONNECTING THE FACE MASK
CONNECTING THE BREATHING VALVE
. Insert the breathing valve into the face mask and move the external speech cone
down to lock the breathing valve in position. In the correct position, the lower lip
of the speech cone covers the serial number on the breathing valve.
. Tighten the hand screw.