80
Agilent 7820 GC Service
Place unit on a clean surface.
Lift up the hinged metal cover over the detector assembly.
Remove the three T-10 screws retaining the bead assembly to
the housing and then remove the bead assembly to prevent
accidental damage.
Do not touch the ceramic bead.
Apply protective cap over the bead assembly, if available.
Loosen the three captive T-20 screws retaining the lid.
Lift the lid up and off.
Using a pair of tweezers, carefully remove the three O-rings, two
alumina insulators, and the collector assembly.
At this point one can choose to clean only the parts removed or
continue the disassembly to remove, clean, or replace the jet.
Use a 1/4-inch deep-socket nut driver to unscrew the jet.
Use slight side pressure on the nut driver to drag the jet up out of
the detector weldment and then use tweezers to grasp and
remove the jet.
Reassembly is the reverse of these steps.
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