The test will fail, if the sum of all leaks in the system (pump, autosampler or column compartment and connections) exceeds the test limit. After isolating and fixing the cause of the leak, repeat the System Pressure Test to confirm the system is pressure tight.
Probable cause | Suggested actions | |
|---|---|---|
1 | Purge valve open. | Close the purge valve. |
2 | Loose or leaky fittings. | Tighten the fitting or exchange the capillary. |
3 | Pump: Damaged pump seals or pistons. | Run the Leak Rate Test to confirm the leak. |
4 | Loose purge valve. | Tighten the purge valve nut (14 mm wrench). |
5 | Autosampler: Loose or leaky fitting. | Tighten or exchange the fitting or capillary. |
6 | Autosampler: Rotor seal (injection valve). | Exchange the rotor seal. |
7 | Autosampler: Damaged metering seal or piston. | Exchange the metering seal. Check the piston for scratches. Exchange the piston if required. |
8 | Autosampler: Needle seat. | Exchange the needle seat. |
9 | Column compartment: Loose or leaky fitting. | Tighten or exchange the fitting or capillary. |
10 | Column compartment: Rotor seal in optional valve. | Exchange the rotor seal. |
base-id: 3820557835
id: 3820557835-2