Agilent Technologies Bravo Platform User Manual page 134

Bravo Platform User Guide
Setting the vacuum pressure
To set the regulated vacuum pressure for the pinch valve:
1
Place a solid-bottom collection plate or the teach plate on top of the installed collar
on the Vacuum Filtration Station.
2
At the vacuum control valve, turn the knob fully counterclockwise (CCW) so that
the valve is completely open, preventing any vacuum pressure in the tubing.
3
Turn on the vacuum source.
4
While observing the manual pressure gauge, slowly turn the control-valve knob
clockwise (CW), gradually closing the line and increasing the vacuum until you
achieve the desired vacuum pressure (8.46 inHg, maximum).
If the vacuum pressure exceeds 8.46 inHg, the pinch valve tubing may collapse. If
this occurs, turn off the vacuum source to the pinch valve and turn the control-
valve knob counterclockwise to eliminate the vacuum pressure. You may need to
massage the tubing slightly to open it up again.
Now you are ready to configure the Vacuum Filtration Station in the software. See
"Configuring the Vacuum Filtration Station in Bravo Diagnostics" on page
A Accessories and platepads
Installing and setting up a Vacuum Filtration Station
128.
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