Weinmann BiLevel ST 22, Руководство по эксплуатации

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Setting up the unit
3.2 Fitting the mask
BiLevel ST 22 is designed for operation with nasal, oronasal and full face masks. To
fit the nasal mask, proceed as follows:
1. Adjust the forehead support (if fitted) of the mask.
2. Connect the headgear to the mask and put the mask on.
3. Adjust the headgear so that there is only a slight pressure from the mask cushion
in order to prevent pressure points on the face.
Refer to the Operating Instructions for the respective nasal mask.
3.3 Accessories
Separate exhalation system
A separate exhalation system is necessary if you use a mask without an integrated
exhalation system.
The exhalation system allows the used air containing carbon dioxide (CO
2
) to
escape from the mask. Without an exhalation system the CO
2
concentration would
rise to critical values in the mask and hose, thus hindering breathing.
Furthermore, should the unit fail, the exhalation system allows you to breath through
the nose or mouth. With full face masks, the patient can breathe through a safety
valve on the mask in the event of a malfunction.
The sleeve at the end of the hose system has a
diameter of 19.5 mm and fits over a 22 mm standard
conus. Put the exhalation system into the sleeve of the
corrugated tube.
Refer to the Operating Instructions for your exhalation
system.
Exhalation system
Hose system
Sleeve