Agilent Technologies 6850 Series Service Information page 290

NOTE: The inlet pressure could actually rise
during this test due to a normal leakage of
carrier gas through proportional valve 1 in
the EPC module. To avoid this, install an
isolation valve (part number G1290-60515)
in the carrier feed to the EPC module for the
inlet under evaluation.
Released: April 2004
10. If the leak test fails, use a leak gun to iden-
6850 Series Gas Chromatograph Service Procedures
tify the source of the leak. To determine if
the leak is in the EPC module or the injection
port, there is a test fitting that can be
installed in place of the inlet gang fitting
that facilitates leak testing of only the EPC
module. This fitting is available in the Leak
Test Kit (part number G1530-60960).
291