Waters APGC - Page 53

Cleaning or replacing the corona pin 3-5
Required materials
• Chemical-resistant, powder-free gloves
• Needle-nose pliers
• HPLC-grade (or better) methanol
• Lint-free tissue
• Lapping film
• New corona pin
To clean or replace the corona pin:
1. Prepare the instrument for working on its source (see page 2-2).
2. Pull the source enclosure release (located at the bottom, right-hand side)
outwards, and then swing open the enclosure.
3. Disconnect the APGC corona pin extension cable from the cable
connector of the APGC ion chamber.
Important: Do not lose any of the internal components of the APGC ion
chamber when removing the corona pin adjuster nut from the assembly.
4. Remove the APGC ion chamber from the ion block (see page 2-21).
Recommendation: Clean the APGC ion chamber after it has been
removed (see page 3-7).
Warning: To avoid personal contamination with biologically
hazardous, toxic, or corrosive materials, and to avoid
spreading contamination to uncontaminated surfaces, wear
clean, chemical-resistant, powder-free gloves when working
with probe and source components.
Warning: To avoid electric shock, prepare the instrument for
work performed on its source before beginning this
procedure.
Warning: To avoid puncture wounds, handle the corona pin
with care.
Warning: To avoid burn injuries, take great care while working
with the probe and source; they can be hot.