Agilent Technologies Agilent 7890 Series Maintenance Manual page 173

Maintaining Your GC
Completely loosen the two screws that secure the split
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vent valve in place.
6 Lift the filter trap assembly and split vent valve from the
mounting bracket together and unscrew the split vent
front weldment on the filter trap assembly. Be careful not
to stress the tubing between the split vent valve and the
trap.
Remove the old filter cartridge and two O- rings.
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8 Verify the new O- rings are seated properly on the new
filter cartridge.
Install the new filter cartridge then reassemble the trap.
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Do not fully tighten yet.
Place the filter trap assembly in the mounting bracket and
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install the retaining clip.
Install the split vent valve.
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Fully tighten the split vent front weldment onto the trap.
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Check for leaks.
13
Maintaining the PTV Inlet
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