Oce Arizona 250 GT User Manual page 86

The Media Vacuum System
Illustration
[29]
1 - Bleed Valve partly
open
[51]
3 - Top Zone is
Open
[51] Vacuum Zone Controls
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 & Gauge
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 guage on the side of the
table above the bleed valve handle provides a visual representation of the actual
vacuum pressure.
86 Chapter 5 How to Operate the Arizona 250 GT
2 - Left Zone is Open
4 - Right Zone is
Closed