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

4 Maintenance Procedures
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 off before carrying out this procedure.
To clean the lamp window:
1. Prepare the instrument for working on the source (see
instrument for working on the source" on page
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.
5. Slide closed the instrument's source interface door.
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To avoid burn injuries, take great care while working
To avoid eye injury from UV radiation, ensure that the
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