Epson 3880 line purge

I’m currently using the older matte black ink. I’m upgrading to the UltraHD Matte Black to use with the Selenium K7 ink set. What do I do to clean out the old ink from the line. I believe I can just purge the one line. How many pieces of 8.5x 11 will be waste in the purging of the ink.

Thanks
John

Right here:

best,
Walker

Walker,

Since I do not see an MK specific QTR flush image, which one do I use to flush the MK channel.

Thanks

John

9CFD28F032884AD3955689BDC8C87516.png

Just make sure your printer is set to MK and then use the “K” image.

best,
Walker