Waters ACQUITY UPLC, Overview And Maintenance Manual, Page: 73 / 141

• Avoid touching the clamping plate tabs when loosening the screws.
• You can rotate the shell nut to gain access to all four screws.
3. If you are replacing the i
2
Valve cartridge, unpack the new cartridge.
Recommendation:
Replace the cartridge whenever you replace the i
2
Valve actuator.
4. Ensure that the PEEK washer is inserted into the cartridge so that its chamfered edge
faces away from the cartridge.
Figure 3–34: i
2
Valve cartridge
1
2
3
4
Chamfered edge of PEEK washer
PEEK washer
i
2
Valve cartridge
Low pressure gasket
5. Insert the cartridge into the actuator, grooved end first.
August 8, 2016, 715005050 Rev. C
Page 73