10
Maintenance
The Oxy K pro can be stored for 10 years.
When the Oxy K pro is being carried around, the following daily visual
checks must be carried out:
—
The carrying case must not be damaged.
—
The red seal on the carrying case must not be damaged.
—
The indicator must not be yellow in colour.
If these conditions are not met, return carying case unopened observing
the "Dispatch Rules" (see “Dispatch Rules” on page 9).
Oxygen Generation
The oxygen required for breathing is supplied by a solid chemical sub-
stance, potassium dioxide (KO
2
), which reacts with the carbon dioxide
(CO
2
) and water vapour (H
2
O) in exhaled air. These two components of the
exhaled air are absorbed by the KO
2
to release the chemically-bound oxy-
gen (O
2
) in KO
2
The simplified reaction formulas are as follows:
KO
2
is both O
2
source and CO
2
absorber at the same time. Alternating
between inhalation and exhalation, the breathing air flows from the brea-
thing bag through the KO
2
cartridge to the heat exchanger and the back
again. A volume-controlled valve controls the volume in the breathing bag.
Technical Data
Inspiratory/expiratory resistance
at 35 L/min
±5.0 mbar
at 35 L/min at the end of the operating period
<5.0 mbar
Temperature of inhaled gas (dry)
<48 °C
Volume of breathing bag
6 litres
CO
2
content (inhaled gas)
<2 vol.%
Operating time according to DIN 58652-1
30 minutes
Weight (with/without carrying case)
ca. 3.5 kg/ca. 2.7 kg
Carrying case (W x H x D)
470 x 387 x 175 mm
Temperatures
storage (not in use)
-20
o
C to 50
o
C
transport (not in use)
-20
o
C to 70
o
C
min. temperature for use
(DIN 58652-1)
-6
o
C
rel. humidity
up to 100 %
Ambient pressure
700 to 1300 hPa
2 KO
2
+ H
2
O
→
2 KOH +
3
/
2
O
2
+ heat
2 KOH + CO
2
→
K
2
CO
3
+ H
2
O + heat
2 KO
2
+ CO
2
→
K
2
CO
3
+
3
/
2
O
2
+ heat
