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Thermo Fisher Scientific

Chromeleon Diagnostics Messages

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Issue

An autosampler failed a diagnostics test.

Environment

UltiMate™ 3000 Autosampler Series:

  • WPS-3000(T)SL Analytical
  • WPS-3000(T)SL Semi-prep 
  • WPS-3000TBSL Analytical 
  • WPS-3000(T)RS 
  • WPS-3000TBRS 
  • WPS-3000TXRS

Resolution

  • If the autosampler does not pass the test, repeat the test.
  • Troubleshoot the 'test result' using the table below:
Test Result Possible Cause

Remedial Action
Needle seat leak too large There is a leak in the INJECT path (that, between the injection valve, sample loop, needle, needle seat, needle seat capillary, and injection valve). Check all fluidic connections in the sample loop path for tightness. Check the needle seat and the needle. Replace the needle seat
System leak too large Either the pump has a leak or there is a leak between the pump and the injection valve Check all fluidic connections between the pump and the injection valve for tightness. Test the pump for leakage. Replace the rotor seal (or rotor seal and stator face seal), the stator, or the valve pod.
The target pressure has not been reached, neither in INJECT nor in LOAD position There is a leak in the system Check all fluidic connections for tightness. Check the drain hole on the injection valve for liquid droplets. Replace the rotor seal (or rotor seal and stator face seal), the stator, or the valve pod. Test the pump for leakage.
The target pressure has not been reached in the INJECT position The sampler has a leak Check all fluidic connections for tightness. Inspect especially the needle seat for indications of leakage. Check the fluidic connection between the needle and sample loop for tightness. Check the drain hole on the injection valve for liquid droplets. Replace the rotor seal (or rotor seal and stator face seal), the stator, or the valve pod.