Epson ET-15000 User Manual page 236

Note: If ink does not flow from the bottle, lift and reinsert the bottle. However, do not reinsert the ink
bottle if the ink has reached the top line; otherwise ink may leak.
8. When the ink tank is full, remove the ink bottle and securely close it with the cap.
Note: If any ink remains in the bottle, store the bottle upright for later use.
9. Close the ink tank cap.
10. Repeat the previous steps as necessary for each ink tank you need to refill.
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