How do I refill the ink tanks on my ET-2803?
The ink tank refilling process is covered in the Refilling the Ink Tanks section of the manual, and you should review Ink Safety Precautions before starting. Genuine Epson ink bottles are recommended and can be purchased at epson.com or by calling 800-GO-EPSON (800-463-7766). Always follow the safety precautions to avoid spills and skin or eye contact with ink. (Page 151-157)
From the official Epson ET 2803 manual, page 151
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