Oce Arizona 640 GT User Manual page 185

3.
Press the Purge button (1) to initiate a purge. The carriage will lower to its purge height (4mm
above the table surface). Raise the carriage and watch the ink as it falls from the heads. Wait until
most of the ink stops dripping.
Don't wait too long or the ink and any debris in it will get sucked back into the printhead.
4.
Press the middle button (2) to raise the carriage to its maximum height.
IMPORTANT
Be careful not to snag the coiled suction-head hose when removing the suction-head from the
holder.
5. Press the Suction button (3) to turn on the suction pump. Pick up the suction-head from the tray
at the left end of the maintenance station. Wipe the suction-head with a new, clean lint-free wipe
to remove any particles that could damage the nozzles in the printheads.
[123] Clean Suction-Head
IMPORTANT
In the next step, start with the left printhead and work to the right as this limits the possibility
that drops of ink will fall onto the coiled hose. Also, do not push up too hard on the printhead as
you may dislodge it and this will require a service call to fix.
6. Slide the suction-head slowly along the entire length of each printhead at a speed of
approximately 8mm per second (8 seconds per printhead). The suction-head slides on stainless
steel strips on the printhead. It may be necessary to repeat this step in the following cases:
a) Visual inspection of the printhead shows signs of ink remaining on the nozzle plate;
b) Suction-head was not kept level during travel across the nozzle plate;
c) Suction-head was pulled too quickly or unevenly across the nozzle plate.
IMPORTANT
Move the suction-head slowly so that you don't "plow" excess ink to the front and sides of the
printhead and suction-head. If you move too fast, ink is pushed onto the upper edge of the
printhead opening in the pan, where it is difficult to see and causes problems.
Océ Arizona 600 Series
How To Perform Printhead Maintenance
Chapter 12 - Printer Maintenance 185