Waters ACQUITY Isocratic Solvent Manager Overview And Maintenance Manual page 100

3 Maintenance Procedures
4. Remove the finger-tight fittings attached to the solvent-selection valve
cartridge.
Solvent-selection valve cartridge:
Hex screw in
10 o'clock position
Outlet of valve to
the low-pressure
inlet filter
5. Use the 2-mm Allen wrench to remove the hex screw at the 10 o'clock
position on the cartridge.
6. Remove the cartridge from the solvent-selection valve assembly by
pulling straight forward.
7. Unpack the replacement cartridge.
8. Ensure that the groove in the cartridge housing aligns with the groove
on the drive clamp.
If the grooves fail to align, turn the drive clamp until they do.
Tip:
Be careful not to scratch the drive clamp or body.
Note:
Aligned grooves
Drive clamp
9. Insert the new cartridge into the solvent-selection valve assembly.
Requirements:
• Orient the new cartridge exactly as the old one was oriented.
100 September 26, 2013, 715004208 Rev. A
Solvent-selection valve cartridge housing