Troubleshooting The Pump Leak Rate Test - Agilent Technologies 1290 Infinity II User Manual

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 II High Speed Pump User Manual
•
Check for visible leaks on fittings and connectors
•
Connector not fixed / tight enough
•
Connector damaged
•
Leaky filter frit assembly
•
Remove the seal wash tubes from the support ring and check for leak
into the seal wash path
•
Main seal leaking/damaged
•
Piston damaged
•
Remove waste lines from the automatic purge valve
•
Damage to rotor seal and/or stator head
•
Re-tighten the outlet valve
•
Check the position of the gold seal
•
Check for air in the solvent inlet lines and the Tuning signal
•
Purge the lines, Prime and Condition the pump head
•
Check solvent and solvent settings
•
Purge and condition the pump head with water
•
Check for moving air bubbles in tubing directly to the Inlet Valve
•
Purge the lines with water to remove dirt
•
Knock at the valve, clean or replace it
Troubleshooting and Diagnostics
Pump Leak Rate Test
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