Waters Xevo TQD, Overview And Maintenance Manual

Page: 137 / 250

Cleaning the ion guide assembly
March 14, 2014, 715004387 Rev. B 137
16. Fit the isolation valve onto the ion block assembly, so that it is in the
closed position.
17. Fit the ion block cover plate onto the ion block assembly, and then use
the combined 2.5-mm Allen wrench and cone extraction tool to tighten
the 2 captive securing screws on the ion block’s cover plate.
18. Hold the sampling cone assembly so that the cone gas nozzle handle is
oriented horizontally and at the top.
19. Slide the sampling cone assembly into the ion block assembly.
20. Grasp the sampling cone assembly handle, and use it to rotate the
sampling cone assembly through 90 degrees.
21. Fit the ion block assembly to the source assembly (see page 125 ).
Cleaning the ion guide assembly
Clean the ion guide assembly if cleaning the ion block and isolation valve fails
to increase signal sensitivity.
Removing the ion block assembly and ion guide from the source
assembly
Required materials
• Chemical-resistant, powder-free gloves
• 3-mm Allen wrench
• O-ring removal kit
To remove the ion block assembly and ion guide:
1. Remove the source enclosure from the instrument (see page 90 ).
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.