Agilent 6500 Series Q-TOF LC/MS Maintenance Guide 19
Basic Operation 1
To shut down the instrument
To shut down the instrument
You can turn off the Q-TOF LC/MS when the instrument will be idle for an
extended time or when you must do maintenance.
Before you begin, check that you have completed tuning and acquiring data,
and that you have saved all data as needed.
1 Turn off the solvent flow.
If you have analyte in any of the components in the sample delivery system,
flush the delivery system with pure solvent before you continue.
2 Check that the ballast valve on the rough pump is closed.
3 In the Data Acquisition program, right-click the Q-TOF device pane and
click Vent.
When you vent the system, these parts are turned off: spray chamber high
voltages, the drying gas heater, the nebulization flow, the detector, and
other lens voltages. The drying gas flow is set to 3.5 L/minute. If the APCI
source is installed, the vaporizer heater is also turned off. If you have an
instrument with Agilent Jet Stream Technology, the sheath gas heater is
also turned off. The Rough Pump turns off when the turbo speed is below 20
percent.
4 Wait until the instrument completely vents (reaching 760 torr) to ensure
that the flight tube is filled with nitrogen. This protects the detector from
moisture damage.
5 Turn off the front switch located in the lower left front corner of the
instrument.
When you click Vent in the Q-TOF shortcut menu, the Q-TOF LC/MS does not turn off.
You must follow the entire shutdown procedure.
The spray shield and related spray chamber components are likely to be hot. Do not
touch them!
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