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1 Bacteria filter (Accessories)
Used to protect the patient from bacteria,
particularly if the unit is being used by a number of
patients.
2 Power supply
Used to supply power to the therapy unit.
3 Power supply cable
Connects the power supply to the power supply.
4 Cable securing clip
Prevents accidental disconnection of the unit from
the mains supply.
5 Handle
Used for carrying the unit.
6 Serial interfaces
Used to connect to units for visualization and
evaluation purposes.
7 Control panel and display
For controlling and monitoring the BiLevel ST 22
and the connected accessories.
8 Humidifier connection
For connecting the humidifier VENTIclick supplied
as an accessory.
9 Unit outlet
The air flows from here via the hose system and
nasal mask to the patient.
10 Sealing plugs (2x)
Used to close the pressure measurement hose
during cleaning.
11 Drying adapter
Required to dry the hose system with the
BiLevel ST 22 and for function check .
12 Adapter
Connects the hose system to the unit outlet.
13 Pressure measurement hose
To measure the pressure in the nasal mask.
14 Hose system
The air flows through the hose system to the mask.
The hose system consists of the corrugated tube,
pressure measurement hose and adapter.
15 Exhalation system (Accessories)
Exhalation air containing carbon dioxide is
diverted here during the therapy.
16 Nasal mask (Accessories)
The nasal mask is used to administer air to the
patient at the required therapy pressure.
17 Hood (Accessories)
Helps fit the nasal mask correctly and securely.
19 Filter compartment lid, air inlet
Covers and securely holds the coarse and fine dust
filters.
20 Mains connection/connection for battery
VENTIpower
This is where the connecting cable for the power
supply is connected. For connecting mains-
independent power supply VENTIpower supplied
as an accessory.
21 Connection for O2 valve VENTI-O2
For connecting the VENTI-O
(supplied as an accessory).
22 Alarm acknowledgement key with LED
The alarm acknowledgement key temporarily mutes
the alarms. The LED provides the visual display of
the alarms.
23 On/Off switch
For switching BiLevel ST 22 on and off.
24 Dial
Central operating element of the BiLevel ST 22,
used to navigate in the menu.
25 Operating keys
Allows the doctor to make quick settings; disabled
in patient mode.
oxygen valve
2
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