Replacing the syringe dispenser valve
3-17
•
Needle – Connects to the buffer tubing.
Requirement:
Make all connections to the syringe valve using
finger-tight fittings.
To replace the syringe dispenser valve
Tip:
Before replacing the syringe valve, place the syringe valve in the
“Remove” position. In this position, the mounting screws are in line with
the holes.
1.
From the Maintain menu of the 2707 Console, click Replace > Syringe.
Result:
The syringe plunger lowers.
2.
Unscrew the syringe from syringe valve.
Requirement:
Keep the connector in the valve intact.
3.
Disconnect the plunger from the syringe drive by sliding it straight back
and out of the holding clip.
4.
In the Replace Sample Syringe window, click Reset.
5.
In the 2707 Console, select Interactive display from the directory tree.
6.
Click Control.
Result:
Syringe valve control is enabled.
7.
Click the syringe valve position text, and click Remove in the dialog box.
8.
Press Enter.
Result:
The set screws align with the holes.
9.
Using a 2-mm socket-head driver, loosen the lower socket-head screw 2
turns.
Recommendation:
Complete no more than 2 turns.
