Waters Xevo TQD, Overview And Maintenance Manual

Page: 119 / 250

Cleaning the extraction cone
March 14, 2014, 715004387 Rev. B 119
Cleaning the extraction cone
Clean the ion block and extraction cone when cleaning the sample cone and
cone gas nozzle fails to increase signal sensitivity. You must remove the ion
block assembly from the source assembly to clean the extraction cone.
Removing the ion block assembly from the source assembly
Required materials
• Chemical-resistant, powder-free gloves
• Combined 2.5-mm Allen wrench and cone extraction tool
To remove the ion block assembly:
1. Vent and shut down the mass spectrometer (see the mass spectrometer’s
online Help for details) .
2. Close the source isolation valve (see page 96 ).
Warning:
To avoid personal contamination with biohazards or
toxic materials, and to avoid spreading contamination to
uncontaminated surfaces, wear clean, chemical-resistant,
powder-free gloves when working with the source components.
Warning:
To avoid burn injuries, allow the source to cool for at
least 30 minutes before proceeding; the source can be hot.
Warning:
To avoid puncture wounds, take great care while
working with the source enclosure open if one or both of these
conditions apply:
• An ESI probe is fitted (the probe tip is sharp).
• A corona pin is fitted (the pin tip is sharp).