Epson WorkForce 30 Series - Manual (Page 22)

22 Maintaining Your Printer
7. Before you open the new ink cartridge package, shake it four or five times.
Then remove it from the package.
Caution:
Do not touch the green chip on the front of the cartridge. This can damage the ink
cartridge.
8. Remove the yellow tape from the bottom of the ink cartridge.
Caution:
If you do not remove the yellow tape before installing the ink cartridge, print quality
may decline or you may not be able to print. Do not remove any other seals from
the cartridges.
9. Place the new ink cartridge into the cartridge holder and push it down until it
clicks into place.