Oce Arizona 365 GT User Manual page 71

Vacuum Zone Control Handles
These controls are meant for use with custom vacuum zones. If you only use the factory default
of one large zone, make sure all three handles are left in the open position. When you create
custom zones the three control valves are used to control which zones of the printer table will
have vacuum applied when the table vacuum pump is turned on. To close a zone turn the control
handle a quarter turn clockwise.
Vacuum Table Foot Pedal
The vacuum foot pedal toggles the table vacuum on or off. It helps the operator to secure the
media on the vacuum table since it allows hands-free operation. The vacuum must be turned on
prior to starting a print, and the vacuum cannot be turned off until a print is completed.
Vacuum Bleed Valve & Guage
The bleed valve handle is located to the left of the vacuum control handles. This bleed valve can
be adjusted to control the amount of vacuum suction on the media. Less suction reduces artifacts
caused by the suction when imaging on flexible media. If you see dimples on the media that are
the same size and location as the vacuum table punched holes, introduce bleed until the dimples
disappear from the media.
The bleed valve is off when its handle is in the horizontal position. To activate the bleed valve,
turn the handle to the vertical position. The closer the handle is to the vertical position, the more
vacuum pressure is reduced. The gauge on the side of the table above the bleed valve handle
provides a visual representation of the actual vacuum pressure.
How to Maintain the Vacuum Overlay Sheet
If an overlay sheet is damaged, replace it. The overlay is an optional commercial item and can be
ordered from your local sales representative. You may want to purchase multiple overlays if you
need multiple common material sizes or a regular, repeating job that is non-square or unusually
sized.
If ink build-up occurs on the overlay sheet, remove the ink. If it is not removed, the print gap
could 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
The Media Vacuum System
71