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Inlet weldment
WARNING
High temperature. The inlet and oven may be
very hot. Before beginning, turn off the inlet
and oven heated zones and allow them to
cool.
Shock hazard. Before beginning, turn off the
instrument and disconnect the power cord.
1. Load the SERVICE method, or turn off the
inlet and oven heated zones and allow them
to cool, or turn off the instrument and allow
the heated zones to cool.
2. Turn off the carrier gas at its source.
3. Remove the lid top cover. See
on page 1-23.
Released: April 2004
4. Open the lid. Disconnect the column from the
5. Close the lid.
6. Loosen the two screws in the connector
7. Trace the heater/sensor cable from the inlet
8. Remove the three T-20 Torx screws holding
"Lid top cover"
6850 Series Gas Chromatograph Service Procedures
inlet. Remove the insulation cup and insula-
tion. Remove the bottom cover plate.
cover plate and slide the cover plate off.
Then, disconnect the ribbon cable connector
from the harness. Using a 7/16-inch wrench,
disconnect the gas input line from the
module. Next, remove the three mounting
screws that hold the module in place.
to the wiring harness connector. Disconnect
it at the harness.
the inlet in the lid.
69
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