Potential Causes Of System Pressure Test Failure - Agilent Technologies InfinityLab LC Series User Manual

7 Test Functions and Calibration
System Pressure Test

Potential Causes of System Pressure Test Failure

System Pressure Test failed
The test will fail, if the sum of all leaks in the system (pump, autosampler or
column compartment and connections) exceeds the test limit. After isolating and
fixing the cause of the leak, repeat the System Pressure Test to confirm the
system is pressure tight.
Probable cause
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Agilent InfinityLab LC Series 1260 Infinity II Isocratic and Quaternary Pumps User Manual
Purge valve open.
Loose or leaky fittings.
Pump: Damaged pump seals or pistons.
Loose purge valve.
Autosampler: Loose or leaky fitting.
Autosampler: Rotor seal (injection valve).
Autosampler: Damaged metering seal or
piston.
Autosampler: Needle seat.
Column compartment: Loose or leaky fitting. Tighten or exchange the fitting or capillary.
Column compartment: Rotor seal in optional
valve.
Suggested actions
Close the purge valve.
Tighten the fitting or exchange the capillary.
Run the Leak Rate Test to confirm the leak.
Tighten the purge valve nut (14 mm wrench).
Tighten or exchange the fitting or capillary.
Exchange the rotor seal.
Exchange the metering seal. Check the piston for
scratches. Exchange the piston if required.
Exchange the needle seat.
Exchange the rotor seal.
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