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Diagnostics – Quaternary Pump & Fraction Collector

Diagnostics – Quaternary Pump & Fraction Collector. Analytical 920 LC. Semi-Prep 940 LC. Modules. Autosampler Quaternary Pump/ Prep Pumps Fluorescence Detector Fraction Collector (external) Column Heater/ Manual Injector Scale Up module MIB

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Diagnostics – Quaternary Pump & Fraction Collector

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  1. Diagnostics – Quaternary Pump & Fraction Collector Analytical 920 LC Semi-Prep 940 LC

  2. Modules • Autosampler • Quaternary Pump/ Prep Pumps • Fluorescence Detector • Fraction Collector (external) • Column Heater/ Manual Injector • Scale Up module • MIB • --------------------------------------------------------------------------------------------------- • UV-Vis Detector • PDA Detector • RI Detector (internal and external) • ELSD (external) • Isocratic Pump • Sample Loading Pump

  3. Quaternary Pump Problems • General Issues • Reproducibility • Carryover • No Peak Observed • Mixing Ratio Accuracy • Pressure Fluctuations • SplitPeaks • Liquid does not Flow • No Power • Pump Motor does not Rotate

  4. Quaternary Pump Problems • Degasser Issues • Bubbles Generated at Outlet • Bubbles Generated when Pump sucks • Liquid does not flow • Vacuum Pump does not work • Vacuum Pump does not stop

  5. Prep Pump Problems • General Issues • Reproducibility • Carryover • No Peak Observed • Mixing Ratio Accuracy • Pressure Fluctuations • SplitPeaks • Liquid does not Flow • No Power • Pump ID’s • (broken Spring)

  6. Quaternary Pump Electronics • Electronics • Motor Error • Leaks • Data & Board Errors • Limit Errors

  7. Quaternary Pump Electronics

  8. Prep Pump Electronics • Electronics • Fuse on Main Board • Pot Adjustments (if applicable) • Circuit Cycling • Limit Errors

  9. IMS Quaternary Pump Actions • Inlet check valve replaced • Outlet check valve replaced • Piston seal replaced • Drain valve seal replaced • Drain valve filter replaced • Solenoid valve replaced • Mixer filter replaced • Solvent filter replaced • Gradient four way joint replaced • Cam Position Adjustment

  10. IMS Quaternary Pump Tests • Flow rate accuracy - Test meter method • Flow rate accuracy test - Time volume method • Flow Compositional accuracy test • Flow Leak test • Flow precision test • Flow pulsation test • Flow compositional Ripple Test • Flow gradient linearity test • Flow compositional precision test

  11. IMS Prep Pump Actions • Pump A pistons seal replaced • Pump A inlet check valve replaced • Pump A outlet check valve replaced • Pump B pistons seal replaced • Pump B inlet check valve replaced • Pump B outlet check valve replaced • Solvent inlet filter replaced • Mixer filter replaced • Zero pump pressure • Reset Pump ID

  12. IMS Prep Pump Tests • Flow Rate Accuracy Test – Flow Meter method • Flow Rate Accuracy Test - Time volume method • Flow Leak Test • Flow Precision Test • Flow Gradient Linearity Test • Flow Compositional Precision Test • Flow Compositional Accuracy Test

  13. Pump Practical • Person 1: • Replacement of the Pump Seal & Drain Valve Seal and Solvent Filter Wash • Person 2: • Replacement & Cleaning the Inlet and Outlet check valves and Pressure Test Mode in IMS, for 940 people, reset pump ID • Person 3: • Remove the pump and Pump Board • Cam Position Adjustment after Board Replacement

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