Oce Arizona 550 GT User Manual page 231

Place a suitable empty container that holds at least 1 liter under the waste tray drain.
2.
[172] Waste Tray Valve
Turn the valve on the waste tray until it starts to drain the waste material.
3.
Shut off the valve when ink no longer drains out (or if the container become full).
4.
Note:
The valve closes clean (drip free) but because it has long pipe use a piece of cloth or paper
to wipe it clean as some ink can remain inside and drip out later when the printer is in
motion.
Dispose of the waste material in a suitable, environmentally-friendly manner.
5.
Empty the Ink Waste Tray
Chapter 11 - Printer Maintenance 231