INFICON Explorer Portable Gas Chromatograph - Manual (Page 268)

Maintenance and Troubleshooting
266
Action: Verify that pressure is set between 4 and 14 psi. If it is set correctly,
contact
INFICON.
Calibration Fault
Cause: The last calibration run was unsuccessful. Depending on the source of the
problem there are different ways to correct this fault.
Action: If pressurized calibration gas is being used, ensure the delivery pressure is
maintained at no more than 14 psig.
Cause: Calibration gas has deteriorated.
Action: Ensure the calibration gas is still of a reliable concentration and that all
compounds are still contained in the calibration gas.
NOTE: Due to the nature of some compounds, some calibration mixes are not stable for
extended periods. Check with your specialty gas supplier for details.
Cause: Calibration compounds are not selected for calibration in the library.
Action: Ensure the compounds contained in the calibration mix are enabled in the
library.
Cause: Compounds stored in the library are not being used for calibration.
Action: Open the library and enter the concentration of each compound in the
calibration gas.
Cause: Calibration peaks are not being recognized.
Action: If the method has been changed, that is flow rates, oven temperature, etc.,
calibration peaks may have moved out of the peak recognition window. You should
clear the library, run a chromatogram with the new settings and store the compounds
of interest in the new library. If the peaks have drifted out of the peak recognition
window, you must update the library values, see Updating Library Information on
page
110.