Waters ACQUITY UPLC M-Class System Manual page 31

To assemble the new fittings:
1. Insert the end of a tube into the hexagonal end of the compression screw.
2. Insert the tube into the larger end of the ferrule.
3. Insert the tube into the connection port.
4. Rotate the compression screw, clockwise, into the connection port until the screw is finger-
tight.
5. Using a permanent marker, mark the compression screw at the 12-o'clock position.
6. Mark the connection port at the 9-o'clock position.
7. Ensure that the tubing makes contact with the bottom of the connection port, and then use
the 1/4-inch open-end wrench to rotate the compression screw clockwise 3/4-turn until the
two marks line up.
First-use tightening:
2.6.1.2 M to ZenFit adapter fitting
First use
Flats
Compression screw
One-piece stainless steel ferrule
November 26, 2019, 715003588 Revision C
Page 31