
Chapter 1 Introducing the Voyager™ Biospectrometry™ Workstations
1-28 PerSeptive Biosystems
1
Vacuum pumps
Three vacuum pumps create the vacuum environment:
• Fore pump—Creates a vacuum in the sample loading
chamber, creates a lower-than-atmospheric-pressure
condition before the turbo pumps start, and provides
backing pressure to the turbo pumps.
• Turbo pump 1—Creates a high vacuum condition in the
main source chamber.
• Turbo pump 2—Creates a high vacuum condition in the
mirror chamber.
Vacuum is maintained in the main source chamber and
sample loading chamber by valves that isolate the chambers.
Vacuum is maintained in the mirror chamber by a differential
pumping baffle.
Vacuum gauges
The Voyage-DE PRO Biospectrometry Workstation includes
three vacuum gauges:
• BA1 (Bayard-Alpert Gauge)—Monitors pressure in the
main source chamber. Called BA1 on Vacuum Gauge
Panel.
• BA2 (Bayard-Alpert Gauge)—Monitors pressure in the
mirror chamber. Called BA2 on Vacuum Gauge Panel.
• TC2—Monitors pressure in the sample loading chamber.
Readings from the vacuum gauges are displayed:
• On the Pressure Gauge Panel. See Section 1.5.4,
Vacuum Gauge Panel, for more information.
• In the System Status Control page in the Instrument
Control Panel. See Section 2.9, Checking System Status
for more information.
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