Oce Arizona 440 GT User Manual page 94

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
The Table Vacuum System
NOTE
Use the vacuum gauge to determine if a zone is properly masked. When
the active zone is properly masked the gauge will read at 20"Hg (68 kPa)
or higher. Small leaks can reduce this number and therefore the efficiency
of the vacuum. Porous media can also degrade the vacuum effect.
If the vacuum gauge for an active zone reads below 10"Hg (34 kPa) and
you have ensured that the area is properly masked and taped off, you
may have a leak in the vacuum system. Place a service call only if you
determine that the zone is correctly masked and the gauge reads
consistently low.
How to Maintain the Vacuum Overlay Sheet
If ink build-up occurs on the overlay sheet, remove the ink. If it is not
removed, the print gap can be affected and this may affect the vacuum
table's ability to secure the media properly. To remove ink we recommend
that you use a paint scraper containing a straight edge razor blade (these
can be found at a local hardware store). Refer to the Maintenance section
for more detailed instructions.
94 Chapter 5 - How to Operate Your Océ Arizona Printer