Waters Xevo TQ MS Operator's, Overview And Maintenance Manual page 112

4 Maintenance Procedures
To remove the sampling cone assembly from the source:
1. Close the source isolation valve (see
before starting a maintenance procedure:" on page
2. Grasp the cone gas nozzle handle, and use it to rotate the sampling cone
assembly 90 degrees, moving the handle from the vertical to the
horizontal position.
Caution:
do not open the isolation valve at any time while the sampling
cone assembly is removed from the ion block assembly.
3. Slide the sampling cone assembly out of the ion block assembly.
112 February 11, 2013, 71500130002 Rev. D
To avoid damaging the instrument by sudden venting,
"To close the source isolation valve
94).
Sampling cone
assembly
Cone gas nozzle
handle
TP03131
Ion block assembly
TP03132