CONTINENTAL EDISON BCT-0538A Guide D'utilisation page 18

TO CHAGE A NEW CO2 CARTRIDGE (No need for Heineken keg)
Please change the CO2 cartridge if can't pour beer out even the
CO2 pressure knob is at the maximum "+" position (still has beer in
keg).
1. Turn the CO2 pressure knob to the minimum "-" position, to
close the CO2 supplying.
2. Open the top cover, loose the cartridge sheath, and take out the
empty CO2 cartridge.
Insert a new 16g CO2 cartridge in the bottle sheath, and screw the
sheath tightly until you will hear a "Click", which indicates that the
cartridge seal has been pierced and the CO2 gas can flow into the
keg freely. Make sure the bottle sheath is fixed tightly to avoid the
CO2 leakage. Then put the CO2 bottle sheath back to the top cover.
3. Close the top cover of beer cooler;
4. Turn the CO2 pressure knob to "+" position to turn on the CO2
supply, and it is ready to pour beer out.
Reminder: each 16g CO2 cartridge can pressure more than 5L
beer out;
Warning:
1. Please use the qualified CO2 cartridge.
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;
2. New CO2 cartridge need good reserve, any play is forbidden, or
will cause hazards.
18