Purging The Autosampler; Auto Zeroing The Transducer - Waters 717plus Operator's Manual

3.4.1 Purging the Autosampler

Before calibrating the seal pak, run a purge to ensure that there is no air in the
autosampler, the mobile phase is fresh, and there are no bubbles in the syringe.
1. Using a degassed solution of 100 percent methanol, set the solvent delivery pump
to 1 mL/min.
2. Remove the syringe cover panel to examine the syringe for bubbles.
3. From the Main Menu, press
appears (Figure
4. Use the arrow keys to set
Start Purge.
5. Run at least 2 purges before calibrating the seal pak.
6. If the purging fails to remove bubbles from the syringe, perform a manual purge
(Section 6.4.1, Manual Syringe

3.4.2 Auto Zeroing the Transducer

Auto zeroing the transducer ensures that pressure readings are accurate.
3
To zero the transducer:
1. Ensure that the system pressure is at 0 psi.
2. Set pump flow to 0 mL/min.
3. To auto zero the transducer, press the keys as outlined in the flowchart below
(Figure 3-5).
After pressing Auto zero Pressure, the system requires approximately 2 minutes to auto
zero the pressure.
If the system is unable to auto zero, manually adjust the transducer
Transducer Adjustment).
55 Startup and Configuration
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Edit Purge. The Purge and Compressibility menu
3-13), listing the default parameter values.
Compression Check to No, then press Enter. Press
Purge).
(Section 6.4.3, Manual