Waters Xevo G2 QTof Operator's, Overview And Maintenance Manual page 106

3. Slide the sampling cone assembly out of the ion block assembly.
Ion block assembly
5-30 Maintenance Procedures
Do not open the isolation valve at any time when the
Caution:
sampling cone assembly has been removed from the ion block
assembly.
Sampling cone
assembly
Cone gas nozzle
handle
TP03131
TP03132