Possible Cause
Solution
| Insufficient flow from pump | Loosen cap on mobile phase reservior |
| Leak in hydralic lines from pump to column | Tighten or replace fittings; tighten rotor in injection valve |
| Leaking pump check valve or seals | Replace or clean check valves; replace pump seals. |
| Pump cavitation | Degas solvent; check for obstruction in line from solvent reservoir to pump; replace inlet-line frit |