Hardware manual

3-10 Agilent 7500 Series ICP-MS Hardware Manual
3 Startup, Shutdown and Status
Shutting Down the Instrument
The Agilent 7500 is in Analysis mode during tuning and sample analysis.
When not being used for these procedures, the instrument remains in
Standby mode. To maintain or move the instrument, it should be placed in
Shutdown mode and turned off.
The following sections explain how to return the Agilent 7500 to Standby
mode at the end of each day and how to put the instrument in Shutdown
mode when necessary.
Putting the Instrument in Standby Mode
To return the instrument to Standby mode after running samples, complete
the following steps:
1 Select Instrument>>Instrument Control from the Top task.
The Instrument Control window appears.
2 Select Plasma>>Plasma Off
The dialog box appears.
Figure 22
3 Click Yes.
The Instrument Diagram shows that the plasma is off.
The Agilent 7500 automatically turns off all gases, the torch RF generator, the
peripump, and the cooling water flow after cooling the torch and interfaces.
Only the vacuum pumps remain on.
CAUTION
Ensure that positive extraction remains operative while the instrument is in Standby
mode. The rotary pump exhaust continues to pass into the exhaust duct when the
instrument is in Standby mode.