Intermittent drops in pressure on an Alliance - WKB226735
Article number: 226735
SYMPTOMS
- Intermittent drops in pressure
- Passes static decay test
- Passes flow rate accuracy
ENVIRONMENT
- Alliance HPLC System
- 2695 Separations Module
- 2695D Dissolution Separations Module
- 2795 Separations Module
CAUSE
Worn or faulty check valve housing
FIX or WORKAROUND
Replace the check valve housing (700002332).
ADDITIONAL INFORMATION
The same scenario can be caused by a faulty prime/vent valve, part WAT270965.
Example of a pressure trace:
id226735, 2690, 2690D, 2690DUPGD, 2690UP, 2695, 2695D, 2695DE, 2695DEB, 2695DUP, 2695E, 2695EB, 2695INERT, 2695UP, 2790XE, 2790XEUP, 2795E, 2795UP, 2795XE, A-10SSM, ALLCOLCLR, ALLCOLHTR, ALLCOLHTRB, checkvalve