Inlets and valves
6850
6850
Released: April 2004 6850 Series Gas Chromatograph Service Procedures 100
Removing both the module and plumbing
assemblies
1. Loosen the three captive Torx screws which
secure the inlet to the oven, and lift the PTV
inlet out of the oven.
2. Disconnect the carrier gas supply line, split
vent line, and septum purge line (for the
septum head) from the inlet. Straighten the
tubing at the module so that the module can
be easily removed from the chassis.
3. Lift the filter trap from the LCO
2
bracket and
then slide the module assembly out of the
chassis.
4. Replace the module assembly and plumbing
and reassemble in reverse order.
5. Check the system for leaks.
Removing the PTV module only
1. Remove the plumbing block from the front of
the module by removing the screws.
2. Inspect the O-rings in the block for damage
and replace if necessary.
3. Slide the module from the chassis and
replace.
4. Installation is the reverse of removal.
5. Check the system for leaks.
Replacing the plumbing assemblies
1. Turn off the oven and the inlet and allow
them to cool.
2. Turn off the oven and the inlet and allow
them to cool.