Waters APGC, Operator'S Manual Supplement, Page: 45 / 78

Preparing the mass spectrometer for LC operation 2-21
Removing the APGC ion chamber from the mass spectrometer’s
ion block
Required materials
• Chemical-resistant, powder-free gloves
• Combined, 2.5-mm Allen wrench and cone extraction tool
To remove the APGC ion chamber:
1. Disconnect the APGC corona pin extension cable from the APGC ion
chamber cable connector (see page 2-11 ).
2. Pull out the locking plate on the APGC ion chamber to expose the 2
captive screws (see page 2-10 ).
3. Use the combined, 2.5-mm Allen wrench and cone extraction tool to
loosen the 2 captive screws that secure the APGC ion chamber to the ion
block.
4. Remove the APGC ion chamber from the ion block.
5. Disconnect the APGC corona pin extension cable from the corona pin
mounting socket.
6. Slide the sample cone, with its O-ring, out of the left-hand end of the
APGC ion chamber.
Tip:
If you are using a Xevo TQD or SQ Detector 2 instrument, store the
sample cone (labelled “0.36mm” on its base and side wall) in a safe
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 handling
source components.
Warning:
To avoid burn injuries, take great care while
working with the source components, which can be hot.
Caution:
To avoid damaging the instrument by sudden
venting, do not open the source isolation valve at any time
while the APGC ion chamber is removed from the ion block
assembly.