8 Diagnostic Testing and Troubleshooting
242 July 29, 2013, 715003794 Rev. B
Result: These events occur during the test:
• The software prompts you to close the column heater module door.
• The column heater test begins at ambient temperature.
• The column heater temperature ramps up (for about 8 minutes).
• The system measures the increase in temperature.
When the test ends, the Column Heater or Column Heater/cooler Diagnostic
screen displays the pass/fail status and the change in temperature.
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.
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 OK.
2. Follow the directions in the rebuilding kit, to rebuild the valve or valves.
3. Follow the on-screen instructions.
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.
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