Waters Xevo TQD, Operator'S, Overview And Maintenance Manual

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4-108 Maintenance Procedures
2. Pull the source enclosure release (located at the bottom, right-hand side)
outward, 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.
APPI/APCI source—replacing the APPI lamp drive seals
The following APPI lamp drive assembly O-rings must be renewed at
intervals of no greater than 1 year:
• UV lamp bulb sealing O-ring
• Mounting shaft O-rings
• UV lamp mounting flange O-ring
Tip:
An automatic pressure test runs each time you close the source enclosure
and when the instrument starts.
Removing the APPI lamp drive assembly seals
Required materials
• Chemical-resistant, powder-free gloves.
• Combined 2.5-mm Allen wrench and cone extraction tool.
Warning:
The probe, source, and lamp bulb can be hot. To avoid
burn injuries, take great care while working with these compo-
nents.
Warning:
To avoid eye injury from UV radiation, ensure that the
APPI lamp is extinguished before carrying out this procedure.
Warning:
To avoid leaking of biohazardous or toxic materials,
ensure the integrity of the source exhaust system. The APPI lamp
drive assembly O-rings listed below must be renewed at intervals
not exceeding 1 year, exactly as described in this section.