ACQUITY UPLC Failing Dynamic Leak Test - WKB12345

SYMPTOMS

• High delta PSI
• Failing dynamic leak test
• Poor reproducibility
• Replicate injections steadily increasing in volume
• The static leak test fails, with various messages
• Excessive leakage
• Unable to compress
• Leak rate above acceptable limit
• Check valve okay, but excessive leakage

ENVIRONMENT

• ACQUITY UPLC QSM
• ACQUITY UPLC BSM
• ACQUITY I-Class BSM

CAUSE

Failed seals in the head(s)

FIX or WORKAROUND

Replace plunger and seals:

• Plunger: 700002600  

• Seal Wash Housing Seal: 700002598 

• High Pressure Seal:

  • 700002599 ACQUITY UPLC BSM and ACQUITY H-Class QSM

  • 700009135 ACQUITY I-Class BSM                                                                                              

ADDITIONAL INFORMATION

Alternatively you might wish to use pump head rebuild kits consisting of plungers, seals and check valves.

For ACQUITY UPLC and ACQUITY UPLC H-Class

• ACQUITY Accumulator Pumphead Rebuild Kit: 700004746

i2V Valve Rebuild Kit: 700004747 (for BSMs older than S/N F07UPB593M use Passive Check Valve Rebuild Kit 700004748 )

For ACQUITY UPLC I-Class

• ACQUITY I-Class Accumulator Pumphead Rebuild Kit: 700010584
• ACQUITY I-Class i2V Primary Pumphead Rebuild Kit: 700010583