Waters Xevo TQD, Operator'S, Overview And Maintenance Manual

Page: 164 / 250

4-88 Maintenance Procedures
• Needle-nose pliers
• Combined 2.5-mm Allen wrench and cone extraction tool
• Ion block source heater
To replace the ion block source heater
1. Remove the ion block assembly from the instrument (see page 4-37 ).
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