The Power Ink Flushing utility allows you to replace all of the ink inside the ink tubes. In the following situations, you may need to use this feature to improve the print quality.
You printed or performed head cleaning when the ink levels were too low to be seen in the ink tank windows.
You performed the nozzle check and head cleaning 3 times or running Power Cleaning once, and then waited for at least 12 hours without printing, and then run the nozzle check again, but print quality still did not improve.
Before running this feature, read the following instructions.
Make sure that there is enough ink in the ink tank.
Visually check the ink tank is at least a third full. Low ink levels during Power Ink Flushing could damage the product.
An interval of 12 hours is required between each Power Ink Flushing.
Normally, a single Power Ink Flushing should resolve the print quality issue within 12 hours. Therefore, to avoid unnecessary ink usage, you must wait 12 hours before you try it again.
Maintenance box replacement may be required.
Ink will be deposited to the maintenance box. If it becomes full, you must prepare and install a replacement maintenance box to continue printing.
When the ink levels or the free space in the maintenance box are insufficient for Power Ink Flushing, you cannot run this feature. Even in this case, the levels and the free space for printing may remain.
Select Maintenance on the printer's control panel.
To select an item, use the 
buttons, and then press the OK button.
Select Power Ink Flushing.
Follow the on-screen instructions to run the Power Ink Flushing feature.
If you cannot run this feature, solve the problems that are displayed on the screen. Next, follow this procedure from step 1 to run this feature again.
After running this feature, run the nozzle check to make sure the nozzles are not clogged.
For details on how to run the nozzle check, see the related information link below.
If print quality has not improved after running Power Ink Flushing wait for at least 12 hours without printing, and then run the nozzle check again. We recommend turning off the printer. If it has still not improved, contact Epson support.
You can also run Power Ink Flushing from the printer driver.
Windows
Click Power Ink Flushing on the Maintenance tab
Mac OS
Apple menu > System Preferences > Printers & Scanners (or Print & Scan, Print & Fax) > Epson(XXXX) > Options & Supplies > Utility > Open Printer Utility > Power Ink Flushing