Thermo Scientific AI 3000, Руководство по эксплуатации

Страница: 96 / 108

5
Maintenance
Cleaning the Syringe
78 AI 3000/AS 3000 Sampling System - Operating Manual Thermo Scientific
Cleaning the Syringe
To get the best performance from the syringe installed in the autosampler and increase the
syringe lifetime here are some useful tips in order or cleaning impact:
1. If the sample is not viscous, program in the autosampler method one or more rinse with
sample to maintain the lubrication of the plunger.
2. Program in the autosampler method one or more post-injection wash cycle with solvent.
3. If the sample is viscous, program in the autosampler method wash cycles of extra solvents
(e.g. A+B, where A is used to clean and B to rinse). The first solvent should have a higher
cleaning power than the second solvent. The latter should be chemically similar to the
sample scheduled for injection.
4. Perform an automated maintenance cycle every 100 injections (see “Automated Cleaning”
on page 78 ).
5. Perform a manual maintenance routine every 1000 injections (see “Manual Cleaning” on
page 78 ).
Automated Cleaning
The syringe maintenance cycle is always advisable after the injection of pure samples, of
undiluted mixes, of liquids containing solids in suspension or, at any rate, after long sequence
of analyses.
To perform an automated cleaning cycle proceed as follows:
1. Fill a 4 mL vial with fresh solvent with high cleaning power (acetone is recommended)
and place it in the D position of the washing tray of the AI 3000/AS 3000 II.
2. From your PC, enter the Data System and then access the AI 3000/AS 3000 II method
page. Select the following parameters:
• Pre-injection Solvent: D
• Pre-injection Cycles: 15
3. Enter the File menu and click on Send Method to Sampler .
4. Enter the Command menu and click on Start Clean Cycle .
5. If necessary, repeat the step 4 of this sequence.
Manual Cleaning
CAUTION This operating sequence is not applicable to the 0.5
μ
L syringe.
For details, refer to the Nano-Volumes Kit for S/SL Inlet System User Guide .