Waters Xevo TQD, Overview And Maintenance Manual

Page: 166 / 250

4 Maintenance Procedures
166 March 14, 2014, 715004387 Rev. B
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 95 ) 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 93 ).
Warning:
To avoid personal contamination with biohazards or
toxic materials, and to avoid spreading contamination to
uncontaminated surfaces, wear clean, chemical-resistant,
powder-free gloves when working with the probe and source
components.
Warning:
To avoid burn injuries, take great care while performing
this procedure; the probe and source can be hot.
Warning:
To avoid electric shock, ensure that the instrument is in
Standby mode before commencing this procedure.
Warning:
To avoid puncture wounds, handle the corona pin with
care; the corona pin tip is sharp.