INFICON Explorer Portable Gas Chromatograph - Manual (Page 274)

Maintenance and Troubleshooting
272
Cause: Temperature is too low.
Action: Increase the oven temperature and ensure the temperature setting is correct
for the selected method. Refer to the user’s notes supplied with your assay. Allow 20
to 30 minutes for the instrument to stabilize.
Cause: The sample was injected onto the wrong column.
Action: Ensure you have selected the correct column for your application. Refer to
the user notes provided with your assay.
Problem: Peaks appear too quickly
Cause: Pressure is too high resulting in high detector flow rates.
Action: Adjust the carrier gas pressure and ensure the pressure setting is correct for
the selected method. Refer to the user’s notes provided with your assay.
Cause: Column temperature is too high.
Action: Reduce the oven temperature and ensure the temperature setting is correct
for the selected method. Allow 20 to 30 minutes for the instrument to stabilize.
Cause: The sample was injected onto the wrong column.
Action: Ensure you have selected the correct column for your application. Refer to
the user notes provided with your assay.
Problem: Baseline drifts up and down
Cause: Instrument is adapting to large temperature changes.
Action: Increase the oven temperature to ensure isothermal conditions. Allow the
instrument to stabilize for 20 to 30 minutes.