Alliance "Unable to compress" during static decay test - WKB12683
Article number: 12683
SYMPTOMS
- Erratic pressure (high delta psi)
- New seals, plungers, and check valves on both accumulator and primary
- Primary torpedo recently replaced
- Accumulator passes static decay test, or "accumulator leak rate too high" error message appears
- "Primary unable to compress" error message appears during static decay test
ENVIRONMENT
- Alliance HPLC system
- 2695 separations module
CAUSE
Worn fittings on tubing from accumulator check valve housing to transducer and on tubing from prime/vent valve to inline filter
FIX or WORKAROUND
- Replace tubing.
ADDITIONAL INFORMATION
- Turn off GPV.
- Press DIAG key.
- Select OTHER TESTS.
- Select TURN OFF GPV.
- Replace tubing from accumulator check valve housing to transducer.
- Replace tubing from prime/vent valve to inline filter.
- Turn on GPV.
- Press DIAG key.
- Select OTHER TESTS.
- Select TURN ON GPV.
- Prime all solvent lines.
- Perform static decay test.
- Press DIAG key.
- Select OTHER TESTS.
- Select STATIC DECAY TEST and follow on-screen instructions.
- Set flow and monitor delta psi.
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