Agilent Technologies 1100 Series Water Pump User Manual


 
86
Troubleshooting and Test Functions
Evaluating the Results
Evaluating the Results
The sum of all leaks between the pump and the blank nut will be indicated by
a pressure drop of >2 bar/minute at the plateau. Note that small leaks may
cause the test to fail, but solvent may not be seen leaking from a module.
NOTE Please notice the difference between an error in the test and a failure of the
test! An error means that during the operation of the test there was an
abnormal termination. If a test failed, this means that the results of the test
where not within the specified limits.
If the pressure test fails:
Ensure all fittings between the pump and the blank nut are tight. Repeat
the pressure test.
NOTE Often it is only a damaged blank nut itself (poorly shaped from overtightening)
that causes a failure of the test. Before investigating on any other possible
sources of failure make sure that the blank nut you are using is in good
condition and properly tightened!
If the test fails again, insert the blank nut at the outlet of the previous
module in the stack (eg. autosampler, port 6 of the injection valve), and
repeat the pressure test. Exclude each module one by one to determine
which module is leaking.
If the pump is determined to be the source of the leak, run the leak test.