To Replace The 6 Port Valve - Agilent Technologies 7697A Maintenance Manual

To Replace the 6 Port Valve

C A U T I O N
Maintenance
Wear clean, lint-free gloves to prevent contamination of parts with
dirt and skin oils.
1 Gather the following:
• Lint- free gloves
• 1/4- inch wrench
2 Cool your GC oven to ambient temperature.
3 Turn the Headspace off and unplug the power cord.
4 Wait for the Headspace oven and transfer line to cool
before continuing.
Turn off all gas flows.
5
Access the pneumatics area:
6
Remove the front pneumatics cover. See
a
the Pneumatics Front
Remove the valve thermal enclosure. See
b
the Valve Thermal
Depending on your hardware configuration, do one of the
7
following:
• Remove the loop cover and valve cover. See
Remove the Loop Cover"
Cover".
• Remove the valve/loop cover. See
Valve/Loop Cover".
Using a 1/4- inch wrench, remove all connections from the
8
6 port valve.
9 Remove the two T- 20 Torx screws on the back of the
valve block.
Lift the 6 port valve out of the pneumatics area.
10
Reassembly is the reverse of these steps.
Cover".
Enclosure".
and "To Remove the Valve
"To Remove the
3
Maintenance
"To Remove
"To Remove
"To
45