High Pressure Error Message in the 1100 Series Liquid Chromatograph1. Ensure that the upper pressure limit in the method is set to a value suitable for the analysis.
2. Disconnect the column and check pressure.
3. If high pressure is observed, even with the column removed, use the injector step commands to switch the injection valve to the bypass mode and monitor the pressure.
4. Open the purge valve. Note pressure. If pressure is high, replace the PTFE frit in the purge valve. If pressure is normal (less than 2 bar), close the purge valve and remove the capillary line from port 1 of the autosampler switching valve.
So, when do I need to change the frit in the Purge Valve of the Solvent Delivery Module (Pump)?
The most common way to determine if the Purge Valve frit needs to be replaced is by opening the Purge Valve and establishing a flow of 1 ml/min of Methanol. If the pressure is more than 7 BAR, the frit should be replaced.
The most common way to determine if the Purge Valve frit needs to be replaced is by opening the Purge Valve and establishing a flow of 1 ml/min of Methanol. If the pressure is more than 7 BAR, the frit should be replaced.
