224 Maintaining Your GC
11 Maintaining the FID
To Check the FID Leakage Current
1 Load the analytical method.
• Make sure flows are acceptable for ignition.
• Heat the detector to operating temperature or 300 °C.
2 Turn off the FID flame.
3 Press [Front Detector] or [Back Detector], then scroll to
Output.
4 Verify that the output is stable and < 1.0 pA.
If the output is unstable or > 1.0 pA, turn off the GC and
check for proper assembly of the upper FID parts and
contamination. If this contamination is confined to the
detector, bakeout the FID. (See “To Bakeout the FID” on
page 229.)
5 Turn on the flame.
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