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Troubleshooting and Test Functions
Evaluating the Results
Evaluating the Results
Defective or leaky components in the pump head lead to changes in the
leak-test pressure plot. Typical failure modes are described below.
Figure 10 Leak Test Pressure Profile
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.
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!
Pressure [bar]
Time [minutes]
Ramp 1
Plateau 1
Ramp 2
Plateau 2
Ramp 3
Ramp 4
Plateau 3