Cleaning Or Replacing The Corona Pin - Waters Xevo TQD Overview And Maintenance Manual

4 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
Warning:
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:
this procedure; the probe and source can be hot.
Warning:
Standby mode before commencing this procedure.
Warning:
care; the corona pin tip is sharp.
To clean or replace the corona pin:
1. Remove the corona pin from the source (see
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
166 March 14, 2014, 715004387 Rev. B
To avoid personal contamination with biohazards or
To avoid burn injuries, take great care while performing
To avoid electric shock, ensure that the instrument is in
To avoid puncture wounds, handle the corona pin with
page 95) and inspect the pin
page 93).