Thermo Scientific TSQ Quantum XLS, User Manual

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3
System Shutdown, Startup, and Reset
Starting Up the System after a Complete Shutdown
Thermo Scientific TSQ Quantum XLS Series User Guide 55
4. Place the mass spectrometer main power circuit breaker switch in the On (|) position.
Placing the main power circuit breaker switch in the On (|) position supplies power to
those mass spectrometer components that are not affected by the vacuum service switch
and the electronics service switch.
5. Place the vacuum service switch in the Operational position.
6. Place the electronics service switch in the Operational position. The following occurs:
• The Power LED on the mass spectrometer front panel illuminates green to indicate
that power is provided to the mass spectrometer electronics. (The electron multiplier,
conversion dynode, ion source, and mass analyzer and ion optics rf voltages remain
off.) See
Figure 31 and Figure 32 .
• The embedded computer restarts. After several seconds the Communication LED on
the front panel illuminates yellow to indicate that the data system and the mass
spectrometer have started to establish a communication link.
• After several more seconds, the Communication LED illuminates green to indicate
that the data system and the mass spectrometer have established a communication
link. Software for the operation of the mass spectrometer is then transferred from the
data system to the mass spectrometer.
• After three minutes, the System LED illuminates yellow to indicate that the software
transfer from the data system to the mass spectrometer is complete and that the
instrument is in standby.
• The Vacuum LED on the front panel of the mass spectrometer remains off until the
turbomolecular pump reaches 80 percent of its operational speed of 750 Hz. At this
time the ion gauge is turned on and the Vacuum LED illuminates yellow. The
Vacuum LED illuminates green, and the high voltage can be turned on, only if the
pressure in the mass analyzer region of the vacuum manifold is less than the
appropriate value listed in
Table 3 .
Figure 31. Front panel LEDs of the TSQ Quantum XLS Ultra mass spectrometer
Table 3. Maximum allowed pressure to turn on high voltage
Carrier gas Ar collision gas Maximum pressure (Torr)
He Off 8 × 10
–
6
He On 5 × 10
–
5
Power Vacuum Communication
System Scan