220 Purged/Packed Inlet
Leak testing—EPC and manual inlets
18 of 20
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Figure 220-13 EPC module serviceable parts
Correcting leaks
1. Use an electronic leak detector to check all areas of the inlet and plumbing
that are potential sources of a leak.
2. Tighten loose connections to correct leaks, if necessary. You may need
to repeat the leak test.
3. If the pressure drop is now 1.0 psi or less, you can consider the inlet
system leak-free. If the pressure drop is much greater than this, continue
to search for leaks and repeat the pressure test.
Aluminum bracket
O-rings
Supply fitting
O-ring
Septum purge fitting
Caution
Aluminum bracket removed
for clarity, DO NOT completely
remove the bracket during
valve replacement.
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