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Waters

Desolvation temperature does not increase to requested value - WKB2987

Article number: 2987

SYMPTOMS

  • Desolvation heater temperature does not increase to requested value; remains at ambient temperature when system is operating
  • Source heater works as expected

ENVIRONMENT

  • Xevo TQD with ESI probe
  • Xevo TQ-XS

CAUSE

ESI probe not recognized correctly, therefore power is not supplied to desolvation heater

FIX or WORKAROUND

  1. Replace the ESI probe:
    • Part number 700004254 for the "ESI PROBE ASSEMBLY" (standard)
    • Part number 186007529 for the "LOW FLOW ESI PROBE" (narrow bore style)
    • Part number 700011240 for the "Tool-free ESI Probe"

ADDITIONAL INFORMATION

  • Desolvation heater is only enabled if Source ID readback is less than 3.5V (on Tune page)
  • Source ID readback should be 1.9V for ESI probe

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