Oce Arizona 250 GT User Manual page 73

[22]
1 - Bleed Valve partly
open
[45]
3 - Top Zone is
Open
[45] Vacuum Zone Controls
Vacuum Zone Control Handles
Three vacuum zone control valves with handles are used to control which zones of
the printer table will have vacuum applied when the table vacuum pump is turned on.
The left handle controls the Left zone, the middle controls the Top zone and the right
controls the Right zone. The vacuum zones are open when the handles are vertical.
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 & Gague
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 gague on the side of the
table above the bleed valve handle provides a visual representation of the actual
vacuum pressure.
2 - Left Zone is Open
4 - Right Zone is
Closed
The Media Vacuum System
73