INFICON Explorer Portable Gas Chromatograph - Manual (Page 272)

Maintenance and Troubleshooting
270
WARNING
: Do not open the instrument or attempt to remove the ECD. If the ECD
must be removed from the instrument, contact INFICON.
Cause: Sample inlet filter is dirty.
Action: Replace the sample inlet filter as described in Replacing the Sample
Inlet Filter on page 242.
Cause: The filter in the telescoping sample probe is blocked.
Action: Replace the filter in the telescoping sample probe, as described in
Replacing the Filter on page
45.
Cause: Improper method settings.
Action: Ensure the correct Method is loaded or check that the foreflush time is long
enough to allow the sample to fill the loop and clear the precolumn before backflush
begins.
Cause: Leak in the injection port.
Action: Replace the injection port septum as detailed in Replacing the Injection
Port Septum on page
248 or ensure the injection port retainer has been tightened
down. The retainer should be finger-tight, do not over- tighten.
Cause: If syringe injection is being used, the syringe needle may be blocked.
Action: If the syringe plunger does not move smoothly, the needle may be blocked.
Use the fine wire supplied with the syringe to clean the needle or replace the needle.