HP (Hewlett-Packard) 403349-003 Fan User Manual


 
Upgrading procedures 128
Replacing the HEX coupler
1. Install one O-ring on to each HEX unit pipe.
2. Install each ball valve assembly to the HEX unit tubing, positioning the handles down.
3. Loosely attach the HEX unit pipe nut to the ball valve assembly, barely connecting the threads.