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Thermo Fisher Scientific

iCAP Cooling Water and Basic iCAP Setup and Plasma Ignition

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Issue

  • Poor ignition and unexpected plasma going out
  • iCAP service RF ignition failure, RF fails to remain lit

Environment

iCAP 6000 Series

Resolution

A 5% solution of Glysantin anti-corrosion additive (430122821331) in water (distilled or deionised). This is approximately 125 cm3 in the 2.5 L capacity for a typical chiller.

Analysis

A number of RF power supply replacements have been found to be unnecessary due to incorrect cooling fluids.

Cause

Incorrect conductivity in the cooling water will result in an inability of the matching network to match the plasma impedance. This will result in lack of plasma control, plasma instability, plasma going out and failing to light.