Low pressure on 2695 - WKB122500
Article number: 122500
SYMPTOMS
- Low system pressure readback when solvent flowing
ENVIRONMENT
- Alliance HPLC System
- 2695 Separations Module
- 2695D Dissolution Separations Module
- 2795 Separations Module
CAUSE
- Salt buffer precipitation inside pump
- Salt buildup around pump heads
- Plungers, plunger seals, and check valves damaged
FIX or WORKAROUND
Rebuild the pump heads and replace the check valves.
700004073 - Alliance Solvent Management Rebuild Kit
700000254 - Performance Plus Check Valves
WAT271066 - Black seals for THF
700002399 - Ceramic check valves
ADDITIONAL INFORMATION
It is important to flush the system with H2O between using 100% buffer mobile phase and 100% organic solvent.
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