Epson XP-520 User Manual page 186

6. Remove the cartridge from the package.
Caution: Do not touch the areas shown above. Doing so may prevent normal operation and printing.
7. Remove the cap from the cartridge and store it for later use.
Note: Save the cap so you can recap ink cartridges before storing or disposing of them.
Caution: Do not remove any other labels or seals, or ink will leak.
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