3
System Shutdown, Startup, and Reset
Placing the System in Standby Condition
Thermo Scientific TSQ Series Hardware Manual 51
Placing the System in Standby Condition
If you are not going to use the TSQ system for a short period of time, such as overnight or
over weekends, it does not need to be shut down completely. When you are not going to
operate the system for 12 hours or more, you can leave the system in standby mode.
To place the TSQ system in standby mode
1. Wait until data acquisition, if any, is complete.
2. Turn off the flow of liquid from the LC (or other sample introduction device) to the
API source:
a. Choose Start > All Programs > Thermo Instruments > TSQ > TSQ Tune to open
the EZ Tune window.
b. In the EZ Tune window, choose Setup > Inlet Direct Control. The Inlet Direct
Control view appears.
c. Click the LC’s tab and click (Stop) to stop the LC pump.
3. From the EZ Tune window, choose Control > Standby (or click the On/Standby
button) to put the mass spectrometer in standby.
When you choose Control > Standby, the TSQ system turns off the electron multiplier,
conversion dynode, 8 kV power to the API source, and the mass analyzer and ion optics rf
voltages. The TSQ system also turns off the auxiliary gas and sets the sheath gas flow to
zero units. See Table 2 on page 60 for the On/Off status of mass spectrometer
components when the mass spectrometer is in standby mode. The System LED on the
front panel of the mass spectrometer illuminates yellow when the system is in standby.
4. Flush the ion sweep cone and ion transfer tube of the API source as described in the topic
“Cleaning the Ion Sweep Cone and Ion Transfer Tube” on page 68.
5. Leave the mass spectrometer power on.
6. Leave the LC power on.
7. Leave the autosampler power on.
8. Leave the data system power on.
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