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3. In the SCIEX OS software, deactivate the devices, if they are active.
4. Close the software.
5. (If required) Follow these steps to vent the system:
Note:
Vent the system before performing a full cleaning of the vacuum interface, before cleaning the Q0
region, and before replacing the roughing pump oil. For more information contact the Qualified Maintenance
Person (QMP) or FSE.
a. Press and hold the
Vent
button for three seconds.
The Vacuum LED begins flashing quickly (more quickly than during pump down). The turbo pump spins
down gradually.
b. Turn off the roughing pump. Allow the system to vent for 20 minutes.
6. Turn off the mass spectrometer convenience switch. Refer to
7. Disconnect the mass spectrometer mains supply cable from the mains supply outlet.
8. (If venting the system) Disconnect the roughing pump mains supply cable from the mains supply outlet.
9. If the mass spectrometer will be vented and out of service for more than eight hours, then turn off the nitrogen
gas supply.
Unless the gas supply is turned off, nitrogen gas will continue to flow through the curtain plate at a rate of 4
L/min when the instrument is shut down and vented.
After Venting the Mass Spectrometer
•
Perform a Quick Status Check on page 192
• If resolution drift occurs 16 to 24 hours after startup, then perform a quick status check again.
Diverter Valve
The diverter valve is a two-position, six-port valve. It can be plumbed in injector mode or diverter mode. In injector
mode, it can be configured with a sample loop for sample injection. In diverter mode, it can be configured to divert
sample to waste at the beginning of each LC run.
CAUTION: Potential Wrong Result. Do not press the diverter valve button during a run.
Doing so might result in incorrect data.
System User Guide
SCIEX X500 QTOF System
RUO-IDV-05-2334-E
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Operating Instructions—Hardware