Hkoenig BW1890 Manuel D'utilisation page 20

D. TO CHAGE A NEW BEER KEG (5 liter universal keg)
When the beer in the keg runs out, before changing a new beer
keg.
1. Adjust the CO2 pressure regulation knob to "-" switch to shut off
the CO2 supplying and save the CO2.
2. Open the top cover of the beer cooler, pull down the tap handle
to release the rest gas in the keg (maybe with some beer
bubble).
3. Then put the piercing pin into the new keg and put into the beer
cooler. Connect the gas-tube and beer tube from the keg lifter,
by pressing the white parts of keg lifter.
4. Disconnect the gas-tube and beer tube from the keg lifter,
5. Take out the keg by the keg lifter, and pull out the piercing pin
from the keg.
6. It is recommended to clean the tap mechanism when changing
the beer keg each time. Please refer to the below contents
about cleaning.
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When you take out the beer
connector and CO2 connector,
please press the white button down.
Figure 26