HP Indigo press 3050 User Manual page 111

Note Make sure the press is off.
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Figure 8-15. Ink pump removal
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Note Don't remove the filter from the pump. The plastic holder may break.
110 Chapter 8 Handling ink
Take out the ink can.
Pull the unit by the front handle until it comes free and lift it out (Figure 8-15).
Place the unit in the wash basin or in a plastic-lined tray.
ENWW