Waters Xevo G2-XS QTof Overview And Maintenance Manual page 282

B External Connections
6. Using an NW25 center ring, attach the NW25/NW40 adaptor to the
mass spectrometer vacuum port, and then secure the connection with an
NW25 clamp, tightening it with the 7-mm nut driver.
7. Using an NW40 center ring, connect the free end of the vacuum hose to
the NW25/NW40 adaptor, and then secure the connection with an NW40
clamp, tightening it with the 7-mm nut driver.
8. Using an NW25 center ring, attach the 12.7-mm clear PVC exhaust
tubing to the roughing pump exhaust port NW25 nozzle fitting, and then
secure the connection with an NW25 clamp, tightening it with the 7-mm
nut driver.
Important:
exhaust tubing squarely (that is, perpendicular to its horizontal axis).
9. Secure the exhaust tubing with a hose clamp.
10. Route the open end of the exhaust tubing to a suitable exhaust vent. For
further information, see the Waters Xevo G2-XS QTof/Tof Site
Preparation Guide (part number 715003608).
11. Make the electrical connections to the roughing pump (see
282 April 2, 2015, 715004496 Rev. B
To avoid gas leaks, use the sharp knife to cut the PVC
page 283).