4 Basic Operation
Turning off the instrument
Agilent Triple Quadrupole LC/MS System User Guide 62
3 In MassHunter Data Acquisition, right-click the TQ icon in the Instrument
Status window and select Vent to vent the system. Click Yes to continue.
When venting the system, the following occurs:
• The spray chamber high voltages, the drying gas heater, the quad heaters,
the collision cell gas, the nebulization flow, the detector, and other lens
voltages are turned off.
• The drying gas flow is set to Standby.
• If the APCI source is installed, the vaporizer heater is also turned off.
• If the installed source is an Agilent Jet Stream source, the sheath gas
heater is also turned off.
• The rough pump turns off when the turbo speed is below a certain
threshold.
4 Wait until the instrument completely vents.
5 Close the MassHunter Data Acquisition program and shut down the
computer.
6 Press the power switch located in the lower left front corner of the instrument.
7 Unplug the main power cable behind the service panel.
• This action prevents the turbo pump components from overheating.
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