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Waters

Automated back pressure regulator (ABPR) does not reach the set pressure - WKB14955

Article number: 14955

SYMPTOMS

  • In software, pressure readback for ABPR is lower than set pressure

ENVIRONMENT

  • SFx systems
  • ABPR 20
  • ABPR 200

CAUSE

Needle or seat inside the ABPR unit is damaged. Alignment of ABPR does not help.

FIX or WORKAROUND

  1. Rebuild the ABPR and realign it . (See the ''How to videos'' on the Waters website.)

ADDITIONAL INFORMATION

Videos:

Rebuilding the ABPR Valve

Aligning the ABPR 

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