Oce Arizona 550 GT, User Manual

Page: 239 / 263

How to Change Ink Filters
Introduction
Each ink color has a filter that removes any particulate matter from the ink as it is pumped
from the ink bag toward the printheads. The ink filters are located at the electronics end
of the printer around the corner from the ink bags.
When to do
The ink filter for each color of ink must be replaced at least every 12 months or after 11
bags (22 liters) of ink have been consumed. If an ink filter becomes clogged, it will trap
color pigment and affect the color balance of printed images. It can also cause damage to
the ink system. It is important to change the filter before this occurs.
If the Nozzle Check print shows one color weaker than normal, this is an indication that
the ink filter for the affected color is clogged and the filter must be replaced. Also, If you
notice that an ink reservoir takes a long time to fill, check your records for when the filter
for that color of ink was last changed. Make sure that the ink tubing from that filter is
not kinked
Note:
Air can accumulate in the ink filter when an ink bag that contains a small amount of air
is drained. New ink filters will also contain air that must be released. You must bleed
any trapped air out of the ink filters to prevent an overflow of ink into the 0.2 micron
filters associated with the purge valves in the top of the carriage. If you see ink in any of
the 0.2 micron filters, refer to Customer Application Bulletin 18, How to Bleed Air
From an Ink Filter, available from www.dgs.oce.com/.
Before you begin
IMPORTANT! Open the sliding maintenance station door to disable the ink pumps.
Close all four of the purge valves on the top of the carriage.
Required tool
■
Philips screwdriver (only if enclosure thumb-screws are too tight)
■
Lint-free cloth
Chapter 11 - Printer Maintenance 239
How to Change Ink Filters