Rebuild Injector Valves Function; Create A Gpv Test Method; Verify The Firmware Checksum - Waters Alliance e2695 Operator's Manual

8.4.13

Rebuild injector valves function

Run the rebuild injector valves function to rebuild and test the sample loop and syringe valves, V1
and V2, respectively.
The function causes the valve motor to move forward and reverse so that you can remove and
replace valve components. The Injector Valve Rebuild Kit includes information on rebuilding the
injector valves.
8.4.13.1 Required material
Injector Valve Rebuild Kit
To rebuild and test the injector valves:
1. In the Other Diagnostics screen, select Rebuild Injector Valves, and then press
2. Follow the directions in the rebuilding kit, to rebuild the valve or valves.
3. Follow the on-screen instructions.
8.4.14

Create a GPV Test Method

Use the Create GPV Test Method function to create a gradient proportioning valve test method for
use when qualifying the operation of the separations module for compliance purposes. You can
delete this method when you complete the operational qualification and then rerun the utility if you
need to requalify.
To create a GPV test method, select Create GPV Test in the Other Diagnostics screen, and then
press OK. The screen informs you about the GPV test separation method.
8.4.14.1 Close the gradient proportioning valve
Closing the GPV is useful when you replace an inlet check valve cartridge (see
check valve cartridge" on page
To close the GPV, select Turn Off GPV in the Other Diagnostics screen, and then press OK. The
screen displays the current state of the GPV as closed.
8.4.15

Verify the firmware checksum

Run the firmware checksum function to test the installation of the firmware by displaying and
checking the checksum value.
To view the firmware checksum, select Firmware checksum in the Other Diagnostics screen. The
checksum and its accuracy are displayed.
129).
February 27, 2018, 715003794 Rev. C
Page 168
OK.
"Replace an inlet