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Waters

Loose needle latch on ACQUITY H-Class Sample Manager - WKB50174

Article number: 50174

SYMPTOMS

  • Seal Force Sensor H/W Fault (0.0)
  • Needle/Seal Move Limit Exceeded (5.0)
  • Needle is loose from the needle carriage

ENVIRONMENT

  • ACQUITY H-Class Sample Manager - Flow Through Needle (SM-FTN)

CAUSE

The latch on the needle carriage is loose; it rotates easily in either direction.

FIX or WORKAROUND

  1. Tighten the screw fitting located in the center of the needle carriage needle latch.
  2. Perform needle Z-axis calibration, characterize needle seal, and needle seal leak test as appropriate.

ADDITIONAL INFORMATION

 

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