Head Removal And Replacement Function - Waters Alliance e2695 Operator's Manual

8.4.4.1 Required materials
• Pin plug
• Wrenches, 5/16-inch, open-end, two
• Waste container
To perform the valve leak test:
1. In the Other Diagnostic screen, select Valve leak test, and then press the OK screen key.
Tip: You can send the system pressure ramp and decay to an external device using the
System Pressure Chart Output parameter. See
details.
2. Disconnect the red outlet line from the sample management system, and use the pin plug to
plug the red outlet line.
3. Collect the solvent runoff in an appropriate waste container.
4. In the Valve Leak dialog box, press Enter to display the test location selections, and then
select the valve to be tested (V1 or V2) or the needle seal pack position (Above seal or
Below seal).
5. Select the test pressure, usually 31026 kPa (310 bar, 4500 psi), and then press Continue.
6. Follow the instructions in the subsequent Valve Leak Test screens to complete the test.
When the valve leak test is finished, the results are displayed in the Valve Leak Test screen.
8.4.5

Head removal and replacement function

The head removal and replacement function moves the plunger to its most forward position. Use
this function whenever you want to remove and replace a head, seal wash assembly, plunger
seals, or plunger.
To run the head removal and replacement function:
1. In the Other Diagnostics screen, select Head Removal & Replacement, and then press the
OK screen key.
2. In the Head Removal & Replacement screen, follow the instructions to remove and reinstall
the head, seal wash assembly, plunger seals, and plunger. For more information about
removing the head, see "Remove the head, seal wash assembly, and plunger" on page
February 27, 2018, 715003794 Rev. C
Page 163
"Set I/O parameter values" on page 104 for
123.