Error during dynamic leak test: excessive back-leakage during compression - WKB28156
Article number: 28156
SYMPTOMS
- Pump fails dynamic leak test
- Error on accumulator pump: "excessive back-leakage during compression".
- If the accumulator test passes - error on primary pump: "Excessive back-leakage during Primary test"
ENVIRONMENT
- ACQUITY UPLC
- ACQUITY UPLC H-Class
- ACQUITY UPLC I-Class
- ACQUITY PREMIER
CAUSE
Failure of accumulator check valve. Ball inside is not moving.
FIX or WORKAROUND
Replace accumulator check valve 700002968 (H-Class & Classic)
Replace accumulator check valve 700005273 (I-Class)
Replace accumulator check valve 700005415 (Acquity Premier)
ADDITIONAL INFORMATION
id28156, A-30SDM, checkvalve, DLT, UPAQSM, UPBINARY, UPBSM+, UPBSMIVD, UPIBSM, UPIBSM, UPIBSM+, UPIBSM+, UPIBSMIVD, UPISMFL, UPISMFL+, UPISMFTIVD, UPISMFTN, UPISMFTN+, UPLCCOLHTR, UPNBINARY, UPPBSM, UPPQSM, UPQSM, UPQSM, UPQSM+, UPQSM+, UPQSMBIO, UPQSMBIO, UPQSMBIO+, UPSMFTN, UPSMFTN+, UPSMFTNB+, UPSMFTNBIO, UPSMIVD, UPSMPMGR