Waters Xevo TQD Overview And Maintenance Manual page 127

2. Ensure that the isolation valve is closed.
3. Grasp the cone gas nozzle handle and use it to rotate the sampling cone
assembly through 90 degrees.
To ensure correct operation of the ion block assembly
Notice:
after reassembly, follow these guidelines:
• Do not remove the sampling cone assembly retaining blocks.
• Do not adjust the screws securing the sampling cone assembly
retaining blocks.
4. Slide the sampling cone assembly out of the ion block assembly.
Cleaning the ion block assembly
Isolation valve handle
in closed position
Sampling cone
assembly retaining
blocks
Cone gas nozzle
handle
March 14, 2014, 715004387 Rev. B 127