Smartline Autosampler 3900 Manual / Handbuch V 1508 03/2007
Smartline Autosampler 3900 Manual / Handbuch V 1508 03/2007
Smartline Autosampler 3900 Manual / Handbuch V 1508 03/2007
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
58 Troubleshooting<br />
Analytical problems<br />
Syringe Valve<br />
Syringe<br />
In cases of analytical problems the best thing to start with is to determine,<br />
if the cause for the problem is in the autosampler, or in the rest of the<br />
system.<br />
Quick check!<br />
Replace the valve by a manual injection valve to discriminate between<br />
valve problems and other problems.<br />
Perform some manual Full loop injections. If the results are fine the fault<br />
has to be found in the autosampler, if not the HPLC system should be<br />
checked.<br />
Fig. 48: Troubleshooting: AS <strong>3900</strong> flow path.<br />
Buffer Tubing<br />
Injection Valve<br />
Needle arm<br />
Air Needle<br />
Injection Needle<br />
In the diagrams on the next pages (Fig. 49 and Fig. 50) it is assumed that<br />
the unit is working without Errors.<br />
Please keep in mind that analytical also might be caused by external<br />
influences, like temperature and or light sensitive samples. For this<br />
reason it is important to be sure the application was running without<br />
problems before and nothing is changed.
Change language