Then finish the installation with the following steps:
Now screw the Quick Connect adapter (clockwise) firmly onto the carbonic acid cylinder. Remove the housing flap of the bubble device and tilt or lift the device slightly backwards. First, insert the lower end of the cylinder into the device and then insert the cylinder head into the pink cylinder holder. Make sure that the screw head on the valve points to you. Now press the pink cylinder lever down. Place the device straight on the table again. Replace the case flap.
Your Bluecraft CO2 cylinder is now ready to bubble.