Waters Xevo TQ MS, Operator And Maintenance Manual, Page: 126 / 184

4-78 Maintenance Procedures
To fit the new source enclosure and probe adjuster assembly probe seals
1. Ensure that all the grooves for seals are free from dirt and debris.
Tip:
If contamination is present, use 1:1 methanol/water, applied to a
lint-free cloth, to carefully clean the grooves.
2. Fit the new source enclosure seal to the source enclosure and start by
feeding the seal into the groove at the bottom right-hand corner,
working around the seal in a counterclockwise direction.
3. Fit the following new seals to the source enclosure:
• Nebulizer gas seal
• Desolvation gas seal
• Auxiliary gas seal
Requirement:
These seals have a special cross-section; fit them in the
groove as shown.
4. Fit the following new seals to the probe adjuster assembly:
• Probe seal
• Nebulizer gas seal
5. Refit the source enclosure to the instrument (see “Fitting the source
enclosure to the instrument” on page 4-9 ).
Warning:
The source components can be contaminated with
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Caution:
Ensure that the tails of the source enclosure seals are
correctly located in the groove when fitting them to the source
enclosure.
Groove
Seal