Pump Self Test - Agilent Technologies InfinityLab LC Series User Manual

6 Troubleshooting and Diagnostics

Pump Self Test

Pump Self Test

The Pump Self Test combines a Pump Leak Rate Test with several consecutive
System Pressure Tests to determines the leak rates at various positions in the
flow path of the Quaternary Pump. During the test either the leak rate or the flow
restriction is determined, according to the run protocol, which can be configured
during the test setup. The maximum pressure is 1000 bar for G4204A, G7104A
and G7131A, and 800 bar for G7104C and G7131C, or automatically limited to a
lower pressure by the other components in the system.
For running the tests, either a blank nut or the blind seat of an Agilent Sampler
can be used to block the system. When the Mixer Restriction or Mixer Restriction
are measured, a waste line has to be connected to port 4 when prompted by Lab
Advisor. If any Leakage Test is activated, a full Pump Leak Rate Test is performed.
Afterwards, the total system leakage is determined without filter and mixer in the
flow path. If only a Restriction Test is done, no leakages will be determined.
You can choose from the following tests:
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1260 Infinity II Flexible Pump User Manual
Pump Leakage: tests the leakage on the pump head components.
Mixer Leakage: tests the leakage of the mixer and its connections.
Filter Leakage: tests the leakage of the filter and its connections.
Total Valve Leakage: tests the leakage of the valve, mixer (if installed) and
filter.
Mixer Restriction: calculates the restriction due to the mixer.
Filter Restriction: calculates the restriction due to the filter.
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