19 Troubleshooting
19.1 Troubleshooting
311
GC-2010 Plus
19.1.2 Temperature control
19.1.2.1 When the temperature does not increase or reach the set value
Only an oven with the CRG option can attain a temperature below room temperature.
The lower temperature setting may cause an error if the CRG option is removed or
turned off. Change the temperature setting.
19.1.3 Detector
19.1.3.1 FID
1. The FID flame does not ignite properly
Refer to “18.9 Inspection and Maintenance: FID”, and inspect the FID.
If a jet is clogged, clean or replace it.
A defective lgnitor filament must be replaced.
Possible Cause Solution
GC has not started yet.
(Press [SYSTEM] key to display GC startup
procedure screen.)
Press [SYSTEM] key, and press [Start GC] (PF
menu).
Heater control is set to “Off” Set control to “On” on COL/INJ/DET setup screen.
Because start time is set to a high value (or “9999”),
heating has not started yet.
Set start time to a lower value.
(Note: Immediately after this setup value is changed,
the new value is in effect.)
Heat loss is being coused by an open oven door or
insulation out of place.
Close the oven door.
Replace the insulation.
Because maximum temperature is set to a very low
value, an overheat error has occured.
Increase the maximum temperature setting.
Because DET actual temperature is lower than the
set value of COL temperature. (According to keep
the detector clean, column oven temperature can not
exceed DET actual temperarture.)
Set DET temperature larger than COL temperature.
Possible Cause Solution
Column is not connected. Connect the column.
Hydrogen gas is not supplied or its flow rate is incor-
rect.
Supply hydrogen gas, or set its flow rate to a proper
value.
Hydrogen gas has not been flowing long enough to
replace the air in the tubing.
Wait for 30 to 60 minutes to allow the air to be
completely replaced with hydrogen.
Air is not supplied or its flow rate is incorrect. Supply air, or set its flow rate to a proper value.
WARNING
If the FID ignition has failed, shut off the hydrogen gas supply
immediately and inspect the FID.
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