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Loud noise is coming from the degasser of a 2695 Separations Module- WKB12757

Article number: 12757


  • Pressure on 2695 degasser is not reaching <0.9psi
  • The degasser is producing a loud pitched whining noise
  • The degasser is producing a knocking noise
  • Degasser tray is wearing or aging


  • Alliance HPLC System
  • 2695 Separations Module
  • Select agent lab / CDC environment
  • Lab with radioactive materials used in system


Leaking degasser chamber.

Corrosion visible on degasser vacuum pump. Drive shaft and c-clip are rusted. 

degasser rust.jpg 


  1. Power-off the 2695.
  2. Clamp off the tubing to a degasser chamber individually and power-on the 2695 to confirm whether the issue persists.
  3. If the issue is not resolved, replace that chamber and/or the vacuum pump (p/n: 700001352)


An alternative to replacing individual chambers and motor is to replace the Performance Plus 2695 Degasser Tray (700011708). Note: depending on circumstances if the system is in a select agent environment under CDC controls, or a radioactive environment it maybe advisable to replace the tray and leave the old tray onsite for disposal.

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