CONTINENTAL EDISON BCT-0538A Guide D'utilisation page 24

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
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