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Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Cool On-Column Inlet 230
Leak testing EPC and manual inlets
Potential leak points
Check the following areas when checking an inlet system for leaks.
In the oven
Make sure the bottom of the inlet is correctly capped.
On the inlet
• Septum
At EPC module
• Three O-rings behind block where pneumatic lines enter module
• Two O-rings for each valve
• Septum purge cap
• Inlet fitting
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