Perform valve leak test on Alliance - WKB81003

OBJECTIVE or GOAL

Perform valve leak test on Alliance systems.

ENVIRONMENT

• Alliance HPLC System
• 2695 Separations Module
• 2695D Dissolution Separations Module
• 2795 Separations Module

PROCEDURE

Performing the Valve Leak Test

The Valve Leak Test:

1. Tests the Sample Inlet Valve (V1) and Syringe Valve (V2) of the sample management system.
2. Tests the upper and lower side of the needle seal pack for pressure leaks.
   To perform the Defrost Sample Heater/Cooler procedure, highlight Defrost in the Other Diagnostics screen, and then press OK. The Defrost Sample Cooler screen appears.

Perform the Valve Leak Test when you:

1. Suspect leakage in the sample management valves or upper and lower needle seal pack.
2. Perform maintenance on the sample management system.

Required Materials

1. Pin plug
2. 5/16-inch open-end wrenches (2)
3. Waste container

Procedure

1. Select Valve leak test in the Other Diagnostics screen, and then press OK screen. The Valve Leak Test screen appears (see the following image).
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. 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 4500 psi), and then press Continue.
6. Follow the instructions in the subsequent Valve Leak Test screens to complete the test.

Valve Leak Test Diagnostic Screen

ADDITIONAL INFORMATION