Waters Xevo TQ MS, Operator And Maintenance Manual, Page: 157 / 184

Connecting the Edwards oil-free roughing pump C-11
8. Install 2 clamps on each hose end.
9. Connect the 12.7-mm clear PVC exhaust tubing to the roughing pump
exhaust port NW25 nozzle fitting, and secure the tubing with a hose
clamp.
10. Route the open end of the exhaust tubing to a suitable exhaust vent.
11. Make the electrical connections to the roughing pump (see “Making the
electrical connections for the Edwards oil-free roughing pump” on
page C-12 ).
Caution:
To avoid gas leaks, use the sharp knife to cut the PVC
exhaust tubing squarely (that is, perpendicular to its horizontal
axis).
Caution:
The instrument requires two separate exhaust systems:
one for nitrogen, the other for the roughing pump. Vent them to
atmosphere through separate exhaust lines. Oil mist can
seriously damage the instrument if the nitrogen exhaust line
connects with the roughing pump exhaust line. Your warranty
does not cover damage caused by routing exhaust lines
incorrectly.