Sample cone
assembly
Sample cone O-ring
Aperture disc O-ring
Aperture disc
Sample cone
4. Inspect the gas cone and sample cone for contamination. If these components are visibly
fouled, to clean them, refer to
Cleaning the source components. (Page 38)
5. Using the O-ring removal tool, remove the aperture disc O-ring and the aperture disc.
Note:
Dispose of the old aperture disc according to your local environmental regulations.
6. Insert the new aperture disc into the sample cone, ensuring that the side of the disc
inscribed with the disc size is facing toward the cone nozzle.
7. Insert the aperture O-ring on top of the aperture disc, and then push it down to secure the
disc.
8. Ensure that the sample cone O-ring is fitted securely.
9. Refit the sample cone assembly into the gas cone.
10. Refit the PEEK cone clamp and the gas cone assembly to the ion block.
11. Refit the source enclosure to the instrument (see
Fitting the source enclosure to the
3.9 Cleaning the source components
Clean the source components when these conditions apply:
• The aperture disc, sample cone, and cone gas nozzle are visibly fouled.
• You have dismissed inlet and sample-related causes for decreased signal intensity.
3.9.1 Removing the ion block and restrictor
Clean the ion block when cleaning the sample cone assembly fails to increase signal sensitivity.
Required tools and materials
• Chemical-resistant, powder-free gloves
• 2.5-mm hex wrench
Warning:
To avoid personal contamination with biologically hazardous or toxic compounds,
wear clean, chemical-resistant, powder-free gloves when performing this procedure.
August 20, 2021, 715005003 Ver. 04 (Previously released as Revision C)
Page 35
