Waters Xevo G2 QTof, Operator'S, Overview And Maintenance Manual, Page: 122 / 248

5-46 Maintenance Procedures
Cleaning the ion block assembly
Clean the ion block assembly if cleaning the sample cone, cone gas nozzle, and
extraction cone fails to increase signal sensitivity.
Disassembling the source ion block assembly
Required materials
• Chemical-resistant, powder-free gloves
• Combined 2.5-mm Allen wrench and cone extraction tool
• O-ring removal kit
• Needle-nose pliers
To disassemble the ion block assembly:
1. Remove the ion block assembly from the source assembly (see
page 5-38 ).
2. Ensure that the isolation valve is closed.
Warning:
The ion block assembly can be contaminated with
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Isolation valve handle in closed position
Sampling cone assembly retaining
blocks
Cone gas nozzle handle