Agilent 6500 Series Q-TOF LC/MS Maintenance Guide 17
Basic Operation 1
To start the system in Standby mode
10 Under System Turn-On, mark the check boxes for Pump Down and HV
Condition.
11 Click the Start button under System Turn-On.
The system monitors the vacuum pressure. Once the vacuum pressure
reaches 3 x 10
-6
torr, the system will begin conditioning the high voltage
electronics.
12 Once high voltage conditioning has completed, go to Start > Programs >
Agilent > MassHunter Workstation> Data Acquisition to start the Data
Acquisition program.
The system will come up in Standby mode.
By default, the source values are set to:
• Drying gas flow (non iFunnel systems): 3.5 L/minute
• Drying gas flow (6550): 12 L/minute
• Drying gas temperature: 300 °C
• Nebulizing gas pressure: 20 psi
• Sheath gas flow: 3 L/minute
• Sheath gas temperature: 125 °C
13 Allow the instrument to continue pumping down.
The Rough Vac (rough pump) pressure should be about 1.75 to 2.5 torr. The
TOF Vac (flight tube region) pressure should be approximately 3x10
-6
torr
within two to three hours. The TOF Vac reading should be in the 10
-7
torr
range after pumping overnight to several days.
Leave the instrument in Standby.
You will not be able to set the flows while the Q-TOF system is in a “Not Ready” state. The
system will remain in the Not Ready state while the high vacuum pressure is above 3.5 X
10
-6
torr.
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