6
System Shutdown, Startup, and Reset
Turning On the Mass Spectrometer
52 Orbitrap Fusion Series Hardware Manual Thermo Scientific
Turning On the Mass Spectrometer
To turn on the mass spectrometer
1. Open the Tune window.
2. Click the On icon to place the mass spectrometer in On mode.
The center of the selected power mode icon changes from white to green. The System
LED on the front panel turns green. The high voltage to the electron multiplier turns on.
Shutting Down the Mass Spectrometer Completely
Shut down the Orbitrap Fusion Series MS completely only when you are not using it for an
extended period of time or when you must shut it down for maintenance or service. You do
not need to shut down the system completely if you are not going to use it temporarily, such
as overnight or through the weekend. Instead, place the system in standby mode as described
in “Placing the Mass Spectrometer in Standby Mode.”
To shut down the mass spectrometer completely
1. Follow the procedure, “Placing the Mass Spectrometer in Standby Mode.”
2. Place the electronics service switch in the Service Mode (down) position.
This turns off the power to the nonvacuum system electronics.
3. Turn off the Main Power switch.
The following occurs:
• All power to the mass spectrometer, including the turbomolecular pumps and the
one or two forepumps, turn off. All LEDs on the front panel are off.
• After approximately 5 seconds, power to the vent valve solenoid shuts off, the vent
valve opens, and the vacuum manifold vents with dry nitrogen. You can hear a
hissing sound.
• After about 2 minutes, the vacuum manifold is at atmospheric pressure.
4. Unplug the mass spectrometer’s power supply cord from the electrical outlet.
CAUTION Hot surface. Allow heated components to cool to room temperature
(approximately 20 minutes) before you touch or service them.
CAUTION Do not disconnect the power supply cord at the mass spectrometer while
the other end is still plugged into the electrical outlet.
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