Oce Arizona 200 GT User Manual page 89

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3 - Top Zone is
Open
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, in-
troduce 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 po-
sition, the more vacuum pressure is reduced. The guage 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.
4 - Right Zone is
Closed
Chapter 5 - How to Operate the Océ Arizona 200/250/350 GT
The Media Vacuum System
89