Waters ACQUITY UPLC Operator's, Overview And Maintenance Manual page 69

Caution:
the swivel drain cup.
5. Install the swivel drain cup on the bottom of the drip tray, and thread
the mounting screw through the hole in the top of the drip tray.
6. Use a T8 TORX driver to minimally tighten the mounting screw.
Do not overtighten the screw.
Requirement:
To avoid leaks, ensure the O-ring is properly seated in
Mounting screw and washer
Hole in top of drip tray
O-ring
Swivel drain cup
Preparing the column compartments
CM-A drip tray
65