Epson EcoTank ET-4550 - Manual (Page 82)

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Important:
Close the ink bottle cap tightly; otherwise ink may leak.
Note:
Do not dispose of the top of the cap. If any ink remains in the ink bottle after refilling the tank, use the top of the cap to
seal the ink bottle cap.
6. Refill the ink tank with the correct colored ink up to the upper line on the ink tank.
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Important:
It may be difficult to see inside the ink tank. Refill the ink tank carefully to prevent ink from spilling out from
the ink inlet.
Note:
If any ink remains in the ink bottle after filling the ink tank up to the upper line, install the cap securely and store the
ink bottle upright for later use.
User's Guide
Refilling Ink
82