Troubleshooting and Error Messages
User Information
169
•
The pneumatic toggle switches for vial pressurization and
carrier gas are set correctly. For example, set the carrier gas
toggle switch to EPC when using the Headspace Sampler in
EPC carrier gas mode. See
. In GCs
with EPC, a lack of flow from the headspace to inlet usually
causes an inlet shutdown error.
•
Verify there is a flow of carrier gas from the Headspace
Sampler to the GC inlet. For MPC, the carrier pressure is set
so that the sampler provides most of the flow to the inlet.
•
Check for restrictions that block the flow path for filling the
sample loop. The flow path starts at the sample probe and
runs to the bulkhead fitting. See
•
Check for leaks in the carrier flow path. The flow path starts
at the sample probe and ends at the GC inlet. See
on
Poor retention time reproducibility
Poor retention time reproducibility results from changes in the
time it takes the sample to reach the GC detector. Check the GC
and Headspace Sampler flow paths.
Check for leaks and restrictions in the carrier flow path. The
flow path starts at the sample probe and ends at the GC inlet.
See
medium_standard.book Page 169 Tuesday, February 17, 2004 10:14 AM
