Hkoenig bw1890 Manuel D'instructions page 21

Warning:
Please use the qualified CO2 cartridge.
1.
The below CO2 cartridge information for your reference. Never use
Nitrogen gas cartridge in the beer cooler to avoid the explosion,
because of its much higher pressure;
New CO2 cartridge need good reserve, any play if forbidden, or
2.
will cause hazards
NW Volume GW
g ml g
15.5 57.0
│ 20 │
16.5 58.6
F. REPLACE WATER INSIDE THE COOLING CAVITY
It is recommended replacing the water inside the cavity once each
week. (No need to replace the water for each beer keg, one week
one time recommended)
16g CO2 Cartridge
B
Cartridge
A B
Weight
mm mm
g
42.0 88.0
Ø8.6
│ │
│
Ø8.9
42.6 89.0
C D Pressure
mm mm Kgf/cm2
Ø21.7 10
│ │ 60
Ø22.0 11
Blast
pressure
bar
450