46 Maintenance
3 Maintenance
To Replace the 6 Port Valve Rotor
1 Gather the following:
• Lint- free gloves
• 1/4- inch wrench
• Pencil magnet
2 Set your GC oven, Headspace oven, and transfer line to
ambient temperatures and wait for them to cool.
3 Once the GC oven, Headspace oven, and transfer line have
cooled to ambient temperature, turn the Headspace off
and unplug the power cord.
4 Turn all gas flows off at their sources.
5 Access the pneumatics area:
a Remove the pneumatics front cover. See “To Remove
the Pneumatics Front Cover”.
b Remove the valve thermal enclosure. See “To Remove
the Valve Thermal Enclosure”.
6 Depending on your hardware configuration, do one of the
following:
• Remove the loop cover and valve cover (Figure 31). See
“To Remove the Loop Cover” and “To Remove the Valve
Cover”.
• Remove the valve/loop cover. See “To Remove the
Valve/Loop Cover”.
Figure 31 The valve and loop covers
Sample loop cover
Sample probe cover
6 port valve cover
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