Unstable/low pressure with ACQUITY UPLC - WKB117424

SYMPTOMS

• System shows drastically reduced pressure compared with expected values
• When priming the affected pump, the accumulator pressure trace looks unusual (more like a primary pressure trace)

ENVIRONMENT

• ACQUITY UPLC BSM
• ACQUITY I-Class BSM

CAUSE

Blocked filter/frit

FIX or WORKAROUND

Replace the frit/filter that feeds solvent to the primary check valve.

ADDITIONAL INFORMATION

700002913 - ASSY, CARTRIDGE, FILTER, SS FRIT