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Action Step
Disconnect the inlet tubing connected to the sample inlet valve position S3. During the
test method air is introduced into the sample inlet valve through that inlet port to test
the function of the air sensor. 5
Run and evaluate the test
Follow the instructions described in Section 6.1 General performance test actions, on page 226 to start,
run and automatically evaluate the performance test.
Possible causes of a failed test
The tables below describe possible causes of a failed test. When possible sources of error have been
checked and corrected, repeat the test.
Faulty air sensor S test
Action Cause
For further information, see Section 8.4 Troubleshooting: Valves, on
page 375. Faulty air sensor
Make sure that the tubing was correctly prepared, see Prepare the
test, on page 231. Incorrect preparation of
tubing
Faulty Sample inlet valve test
Action Cause
For further information, see Section 8.4 Troubleshooting: Valves, on
page 375. The valve did not switch
234 ÄKTA pure User Manual 29119969 AB
6 Performance tests
6.4 Air sensor S and Sample inlet valve tests