You can check the approximate ink levels and the approximate service life of the maintenance box from the printer's control panel. Select 
on the home screen.
Press the 
button on the control panel.
Select Printer Status.
The indicator on the far right indicates the available space in the maintenance box.
You can also check the approximate ink levels and the approximate service life of the maintenance box from the computer. For Windows users, note that you need to install EPSON Status Monitor 3 to enable this feature.
You can continue printing while the ink low message is displayed. Replace the ink supply units when required.