How do I replace the sample syringe on a 2795 Separations Module? - WKB100163

OBJECTIVE or GOAL

Replace the sample syringe on an Alliance 2795.

ENVIRONMENT

• 2795 Separations Module

PROCEDURE

1. Open the syringe compartment door.
2. Remove the knurled nut that holds the syringe barrel to the syringe mounting bracket (on the bottom of the syringe).
3. Press the Diag screen key in the Main screen. The Diagnostics screen appears.
4. Press the Other Tests screen key. The Other Tests screen appears.
5. Select Motors and Valves. The Motors and Valves screen appears.
6. Select the Syringe Position field.
7. Press Enter to display the drop-down list.
8. Select the Full field.
9. With the knurled nut removed, the plunger tip remains up and the mounting bracket is lowered.
10. When the mounting bracket is fully lowered, unscrew the syringe assembly from the mounting bracket by grasping the syringe barrel near the mounting bracket and turning the syringe counterclockwise until it releases from the mounting bracket.

Installing a new syringe:

If you are installing a syringe of a size different from the original syringe, ensure that you specify the new syringe size in the Configuration screen.
1. Partially fill the new syringe with mobile phase (to help remove air bubbles) before you insert the syringe in the mounting bracket.
2. Screw the new syringe partially into the mounting bracket. Do not tighten. Push the syringe plunger down so that the threaded end slides through the syringe guide mounting bracket.
3. Hand-tighten the syringe.
4. Press Other Tests in the Diagnostic screen. The Other Tests screen appears.
5. Select Syringe Position, and then press Enter to display the drop-down list.
6. Select Empty, and then press Enter. The mounting bracket moves upward to allow you to install the knurled nut.
7. Press Exit to leave the Other Tests screen.
8. Install and finger-tighten the knurled nut.

 

ADDITIONAL INFORMATION