Sparging; Programmed Sparge Dialog Box - Waters 2690 Quick Start Manual

Sparging

You set the initial and maintenance sparge cycles from the Sparge screen. You can set
different sparge cycles for each of the four solvent reservoirs.
To program the sparge cycles from the Direct Function menu:
1. Press the Direct Function
menu appears
2. Select the
dialog box appears
3. In the Time field, enter the time to run the initial sparge cycle, then enter values
for each solvent reservoir for the following parameters:
• Initial sparge cycle rates
• Idle sparge cycle rates
At a sparge cycle rate of 100%, the sparge valve is on at all times; at a sparge
cycle rate of less than 100%, the sparge valve turns on and off periodically.
Press the Disable Sparge
reservoirs.
Press the OK
flows at the initial sparge cycle rates. The idle sparge cycle rate begins when the
timer expires.
screen key in the Status screen. The Direct Functions
(Figure 3-4).
Program Sparge option, then press Enter. The Programmed Sparge
(Figure 2-8).
Figure 2-8 Programmed Sparge Dialog Box
screen key if you do not want to sparge the
screen key. The timer starts counting down, and the sparge gas
Preparing the Separations Module for Operation 19