Hkoenig bw1880 Manual De Instrucciones página 20

c. It is normal to have more bubbles when pouring the first 3 cup of
beer.
d. There will be a sharp and high-speed jet when pouring the last cup
of beer from keg.
Please adjust the CO2 pressure regulation knob to "-" position to close the
CO2 supplying and save the CO2.
Heineken Keg
9.
Heineken kegs are pre-charged with CO2, and do not require the use of
regulator, no need to install the CO2 cartridge. And the knob on the top
cover does not work.
CO2 connector position
Figure 21