Positive Pressure; Connecting And Disconnecting The Face; Mask - INTERSPIRO 90U User Manual

ENGLISH
2

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 off 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
pressure
FIRST BREATH VERSION
Positive pressure is automatically activated by the first breath and can be switched off
manually by pushing the lifting arm on the breathing valve away from the diaphragm
cover. [Fig. 3 and 4]
Fig. 3 Activated positive
pressure
3 CONNECTING AND DISCONNECTING THE FACE MASK
CONNECTING THE BREATHING VALVE
Insert the breathing valve into the face mask and move the external speech cone
1.
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.
4
Fig. 2 Ambient air mode
Fig. 4 Positive pressure
switched off