Waters Xevo G2 QTof, Operator'S, Overview And Maintenance Manual, Page: 170 / 248

5-94 Maintenance Procedures
Replacing the ion block source heater
Replace the ion block source heater if it fails to heat the ion block when the
instrument is pumped-down (evacuated).
Required materials
• Chemical-resistant, powder-free gloves
• Needle-nose pliers
• Combined 2.5-mm Allen wrench and cone extraction tool
• New ion block source heater
To replace the ion block source heater:
1. Remove the ion block assembly from the instrument (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