9 Maintaining the FID
To Replace an FID Jet
Maintaining Your GC 149
10 Install the castle assembly.
11 The GC maintenance wizard will perform checks at the appropriate times, including Leak &
Restriction tests, and will automatically reset the maintenance counters.
12 Select Finished, then select OK to exit the GC maintenance wizard.
13 Attach the capillary column to the detector.
a Install the column in the detector. See “To Install a Capillary Column in the FID” on
page 144.
b After the column is installed at both inlet and detector, establish a flow of carrier gas
and purge as recommended by the column manufacturer.
c Check the FID leakage current. See “To Check the FID Leakage Current” on page 158.
d Bakeout the detector. See “To Bakeout the FID” on page 161.
e Restore the analytical method.
Be careful! The oven, inlet, and/or detector may be hot enough to cause burns. If the oven,
inlet, or detector is hot, wear heat-resistant gloves to protect your hands.
f Allow the oven, inlet, and detector to equilibrate at operating temperature, then
retighten the fittings.
14 Check the FID baseline. See “To Check the FID Baseline” on page 159.
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