Oce Arizona 400 Series GT User Manual page 87

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 re-
duce 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.
Chapter 5 - How to Operate Your Océ Arizona Printer 87