How do I refill the ink tanks on the ET-2400?

To refill the ink tanks, open the front cover to access the ink tank unit. The ET-2400 has refillable ink tanks that should be refilled using genuine Epson ink bottles. Before refilling, review the Ink Safety Precautions section. You can check ink levels on your product and purchase Epson ink using the part numbers provided in the manual. (Page 127)