Appi/Apci Source-Cleaning The Lamp Window - Waters Xevo TQ-S Operator's, Overview And Maintenance Manual

The lamp glass is magnesium fluoride. Avoid touching it because
Tip:
dirt or other contaminants on the window significantly reduce UV
transmission.
8. Refit the lamp-bulb access plug.
9. Return the combined 2.5-mm Allen wrench and cone extraction tool to
its storage location on the source adaptor housing.
10. Close the source enclosure.
11. Slide closed the instrument's source interface door.
APPI/APCI source—cleaning the lamp window
The transmission of the high-energy photons responsible for APPI relies on
the cleanliness of the magnesium fluoride lamp window. Clean the window to
keep the surface clear of contamination, and thus avoid reduced sensitivity.
Required materials
• Chemical-resistant, powder-free gloves
• Lint-free cloth
• Methanol or Isopropanol
Warning:
with the probe, source, and lamp bulb. These components can be
hot.
Warning:
APPI lamp is extinguished before carrying out this procedure.
To clean the lamp window:
1. Prepare the instrument for working on the source (see
2. Pull the source enclosure release (located at the bottom, right-hand side)
outwards, and swing open the enclosure.
3. Use methanol or isopropyl alcohol, applied to the lint-free cloth, to
carefully clean the lamp window.
4. Close the source enclosure.
APPI/APCI source—cleaning the lamp window
To avoid burn injuries, take great care while working
To avoid eye injury from UV radiation, ensure that the
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