Agilent Technologies 7000 Series Operating Manual page 121

5 Operating in EI Mode
To Pumpdown the MS
Figure 40.
4 Open the vent valve by turning it counterclockwise 45 degrees.
5 Verify that the MS power cord is plugged into a grounded building's mains
6 Turn on the MS by pressing the On/Off switch on the front of the MS.
7 Press lightly on the front and rear analyzer quad driver boards to ensure a
Do not push on the filament board safety cover while pressing on the analyzer
C AU T I O N
boards. This cover was not designed to withstand this type of pressure.
8 Close the vent valve when it makes a hissing sound. (See
9 Start the Agilent MassHunter GC/MS Acquisition software. If the TQ was
10 Select the MS Tune icon from the Instrument Control panel.
7000/7010 Series TQ GC/MS Operating Manual
Vent valve knob
Vent valve knob
receptacle.
correct seal. Press on the metal box on the quad driver board.
The foreline pump will make a gurgling noise. This noise should stop within
a minute. If the noise continues, there is a large air leak in your system,
probably at the side plate seal, the interface column nut, or the vent valve.
configured for both an EI and a CI source, you are prompted for the ion source
type that is currently installed. Click on an EI or CI source type if prompted.
Figure 40.)
121