Agilent Technologies 1290 Infinity User Manual page 137

Troubleshooting the Pump Leak Rate Test
Secondary Leak > 3 µL/min
• Leak between the OBV and automatic purge valve
• Outlet valve not properly assembled
Dynamic Leak > 30 µL/min or Dynamic Leak Rate Test fails
• Air in the primary pump chamber
• Abort due to over pressure
• Leak in Inlet Valve
1290 Infinity Quaternary Pump User Manual
•
Check for visible leaks on fittings and connectors
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Connector not fixed / tight enough
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Connector damaged
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Leaky filter frit assembly
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Remove the seal wash tubes from the support ring and check for leak
into the seal wash path
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Main seal leaking/damaged
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Piston damaged
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Remove waste lines from the automatic purge valve
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Damage to rotor seal and/or stator head
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Re-tighten the outlet valve
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Check the position of the gold seal
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Check for air in the solvent inlet lines and the Tuning signal
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Purge the lines, Prime and Condition the pump head
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Check solvent and solvent settings
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Purge and condition the pump head with water
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Check for moving air bubbles in tubing directly to the Inlet Valve
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Purge the lines with water to remove dirt
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Knock at the valve, clean or replace it
Test Functions and Calibrations
Pump Leak Rate Test
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