Air in P600 CISS

Good afternoon.

Has anyone had any experience with air getting into the feed tubes of their CISS on a P600? It is only happening with the yellow, photo black and matte black tubes.
The printer works fine and feed ink into the cartridge, but afterwards the ink in the tubes “treats”. I have attached a photo.

Thank you.


yes. this is actually normal.

There is a small amount air left at the top of each cartridge. Because the ink is fed into the cartridge from the top and then sucked out of the cartridge from the bottom it is totally fine to see a little air in there.



Thank you for the reply and assuring me this is normal.

The CISSS system is working like a charm. I highly recommend it.