Shifting retention times on ACQUITY I-Class - Leak test unable to compress - WKB75880

SYMPTOMS

• Shifting retention times on ACQUITY I-Class.
• Leak test unable to compress on accumulator head.
• Leak visible on fitting at check valve on head.

ENVIRONMENT

• ACQUITY UPLC I-Class

CAUSE

Leak on tubing from primary transducer to accumulator check valve tubing. Fitting failed.        

FIX or WORKAROUND

Replace the tubing. 430002583 - Transducer to Check Valve.

ADDITIONAL INFORMATION

The accumulator leak test may pass with a leak at this fitting, but the primary will fail to compress or have a high leak rate.