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

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4-84 Maintenance Procedures
Cleaning or replacing the corona pin
Required materials
• Chemical-resistant, powder-free gloves
• Needle-nose pliers
• HPLC-grade (or better) methanol
• Lint-free tissue
• Lapping film
• Corona pin
To clean or replace the corona pin:
1. Remove the corona pin from the source (see page 4-15 ) and inspect the
pin for damage.
2. Replace the corona pin if it is damaged; otherwise clean its tip with the
lapping film and a methanol-saturated tissue.
3. Install the corona pin in the source (see page 4-12 ).
Warning:
The probe and source components can be contaminated
with biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Warning:
The probe and source can be hot. To avoid burn injuries, take
great care while performing this procedure.
Warning:
To avoid electric shock, ensure that the instrument is in
Standby mode before commencing this procedure.
Warning:
The corona pin tip is sharp. To avoid puncture wounds, handle
the corona pin with care.