Preparation
91
O2 supply
Compressed O2 must be free of dust and oil and must
be dry. Gas pressure must be 2.7 to 6 bar.
● Screw the O2 hose on to the side of Savina. Connect up O2
from the medical gas pipeline system or an O2 cylinder.
In the case of a supply from an O2 cylinder, the reserve gas
should be calculated. See "Expected operating time when
using an O2 cylinder supply".
A 90
o
connector is available for the O2 threaded
connection on the device; see order list.
Expected operating time when using an O2
cylinder supply
When using an increased O2 concentration (greater than
21 % by vol.) Savina ventilates with a mixture of air (delivered by
a blower) and O2.
When using an O
2 cylinder supply, the maximum possible
operating time depends on the O2 reserve (as well as on the O2
concentration and the ventilation parameters).
For example:
Cylinder pressure measured at the pressure regulator on the
O2 cylinder: 200 bar
O
2 cylinder capacity: 3 L
O
2 reserve: 200 bar x 3 L = 600 L
Expected operating time with the following parameters:
— Ventilation mode : »IPPV«
— Frequency »f « : 10 bpm
— Tidal volume »V
T« : 600 mL
— Minute volume »MV« : 10 bpm x 0.6 L = 6 L/min
— Selected O
2 concentration
»O2« : 50 % by vol = O2 fraction: 0.5
The device allows for the O
2 concentration of 21 % by vol. in
the air.
After an O2 concentration is set, it takes 3 minutes for this
concentration to be reached, due to the mixing process.
The mixing process may take longer with minute volumes
less than 2 L/min.
The "O2 high" or "O2 low" alarm indicates that the
O2 concentration set has not been reached within
this time.
053 37261