Replacing The Epc Manifold - Agilent Technologies 6890 Series Service Manual

250 Volatiles Interface
Replacement procedures
Note If the transfer line is from a G1900A Purge and Trap, install the transfer line
support nut assembly up and inside the metal sleeve of the heated line
assembly to prevent damage to the fused silica line.

Replacing the EPC manifold

WARNING Hazardous voltages are present in the mainframe when the GC power cord is
plugged in. Avoid a potentially dangerous shock hazard by unplugging the
power cord before removing the side panels.
1. Turn off the GC and unplug the power cord. Allow time for all heated
zones to cool and then turn off supply gases at their sources.
2. Unsnap and lift off the pneumatics top cover.
3. Remove the RFI cover. Remove the screw with a T-20 Torx screwdriver,
slide the cover to the left until it disengages from the top rear panel, and
remove it.
4. Remove the inlet cover plate from the front or back position by loosening
the two screws with a T-20 Torx screwdriver and sliding the plate up and
off.
5. Loosen the five screws in the top rear panel with a T-20 Torx screwdriver.
6. Grasp the panel at each end and gently lift it up and then away from the
GC. Be careful not to disrupt the supply tubing. Do not retighten the
screws.
7. Remove the detector cover. Lift the cover as shown and locate the hinge
in the right, rear corner.
8. Remove the left side cover by loosening the two screws with a T-20 Torx
screwdriver, sliding the cover to the rear of the GC, and lifting it up and
off.
9. Remove the fan cover.
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Inlets
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001