Waters ACQUITY UPLC Operator's, Overview And Maintenance Manual page 52

4. Remove the leak sensor from its reservoir by grasping it by its serrations
and pulling upward on it.
If you cannot easily manipulate the leak sensor after removing it
Tip:
from its reservoir, detach the leak sensor connector from the front of the
instrument (see
5. Use a nonabrasive, lint-free wipe to dry the leak sensor prism.
40
To avoid damaging the leak sensor, do not grasp it by the
Caution:
ribbon cable.
"Replacing the detector's leak sensor" on page
TP02891
Serrations
Prism
Lint-free wipe
43).