H.Koenig BW1880 Manuel D'utilisation page 22

C. Replace the seal circle of beer tube (Show as figure 34)
Replace the new seal circle of beer tube if the connector has leakage
1. Turn out the beer tube as indication of bellowing figure
2. Take out the seal circle of beer tube
3. Replace a new seal circle on same position
4. Turn the seal circle tightly to avoid any leakage
Seal circle
Beer tube
Figure 34
MAINTENANCE
If the beer cooler does not work properly, please call the service
center;
To save time and money, before you call for service, check the
Troubleshooting Guide. It lists cause of minor operation problems
that you can correct yourself.