If you have a production machine, open front door pulls out drawer with four drums. Use two yellow O rings and pull out the drum.
If you have a machine lighter than 50 kegs :), or B/W machine push up the secure plate and pull out the drum .
At all machines, the secure plate is labeled with letter R.
If you specify the exact model it can be easier to explain the procedure.
Note, drums are very sensitive to light. Do not expose to light or sunshine for more than two minutes, it can destroy the photosensitive coating
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