How To Change Ink Filters - How To Change An Ink Filter - Oce Arizona 440 GT User Manual

User Manual: Arizona (AZ) 440 GT, AZ 440 XT, AZ 460 GT, AZ 460 XT, AZ 480 GT, AZ 480 XT - Rev. B, 4/2013

How to Change Ink Filters - How to Change an Ink Filter

How to Change Ink Filters - How to Change an Ink
Filter
Introduction
Each ink color (or varnish) has a filter that removes any particulate matter
as it is pumped from the bag to the printheads. The ink filters are located
in an enclosure below the ink bay. There is a Primary and a Secondary Ink
Bay the filter that belongs to each ink or varnish is immediately below that
bag.
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
New ink filters will contain air that must be released. Air in the ink filter
can affect the vacuum and result in dripping ink and deteriorated image
quality as a result of nozzle dropout. Bleeding the ink filters is a strategy
to avoid persistent nozzle dropout. You must bleed any trapped air out of
the ink filters to prevent an overflow of ink into the 0.2 micron ink purge
filters associated with the purge valves located on the top of the carriage.
If any of the 0.2-micron purge filters shows signs of ink contamination
you will need to place a service call to have them replaced. However, the
preferred preventative maintenance method is to bleed the ink filters on a
regular basis.
Before you begin
IMPORTANT! Open the sliding maintenance station door to disable the ink
pumps.
Close all of the purge valves on the top of the carriage.
254 Chapter 12 - Printer Maintenance