Potential Causes Of System Pressure Test Failure - Agilent Technologies 1260 Infinity VL User Manual

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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1260 Infinity QuatPump VL 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.
Column compartment: Rotor seal in optional
valve.
Test Functions and Calibration
System Pressure Test
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.
Tighten or exchange the fitting or capillary.
Exchange the rotor seal.
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