Waters Xevo TQ-XS Mass, Overview And Maintenance Manual

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1. Prepare the instrument for working on the source (see Prepare the instrument for working
on the source ).
Warning:
To avoid burn injuries, take great care while performing this
procedure.
Warning:
To avoid puncture wounds, take great care while working with the
source enclosure open if an ESI probe is fitted; the ESI probe tip is sharp.
2. Pull the source enclosure release (located at the bottom, right-hand side) outwards, and
swing open the enclosure.
3. Remove the corona pin from its mounting contact (see the figure in Installing the corona
pin in the source ).
Tip:
Store the corona pin in a safe location.
4. Fit the blanking plug to the corona pin mounting contact (see the figure in Installing the
corona pin in the source ).
5. Close the source enclosure.
3.3 Combined APPI/APCI source
The combined APPI/APCI source uses an optional, replacement source enclosure. You can
operate the source in APPI mode, APCI mode, or dual-mode APPI/APCI. Dual-mode APPI/APCI
performs rapid switching between ionization modes.
3.3.1 APPI operation
In APPI mode, the source is fitted with an APCI probe adaptor, and the APPI lamp drive
assembly is advanced into the source.
Figure 3–22: APPI mode:
June 9, 2016, 715004990 Rev. A
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