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Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Split/Splitless Inlet 210
Leak testing—EPC and manual inlets
5. Turn the column head pressure controller an additional half turn
clockwise to assure that it will be closed and monitor the column head
pressure gauge for 10 minutes.
• If there is less than 0.5 psi pressure loss (approximately 0.05 psi/
min), consider the system leak tight.
• If pressure loss is much greater than 0.5 psi, there is a leak that must
be found and corrected. See Correcting leaks later in this section.
6. When the system is considered leak tight, the caps may be removed, the
column reinstalled, and the split flow and column pressure may be set.
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