Performing The Leak Test-Epc Inlets - Agilent Technologies 6890 Series Service Manual

220 Purged/Packed Inlet
Leak testing—EPC and manual inlets
Performing the leak test—EPC inlets
Note Be sure to complete all of the preparation steps on pages 10 and 11 before
continuing.
1. Make sure a length and diameter for a capillary column are entered for
the inlet you are testing.
Press
the "Dim" row. This places the system in pressure control mode rather
than in flow control mode.
2. Set the pressure to 25 psi on the keypad.
Press [Front Inlet
field.
3. Wait approximately 15 seconds for equilibration.
If pressure cannot be achieved, either a very large leak is present in
the system, or the supply pressure is not high enough.
4. Turn the inlet pressure "Off."
Press [Front Inlet
and press [Off
12 of 20
Column 1 (or Column 2
[ ] [
or [Back Inlet
]
(or Back Inlet
] [
.
]
Inlets
Agilent 6890 Gas Chromatograph Service Manual
) and enter a length and diameter in
]
and enter "25" in the "Pressure"
]
), scroll to the "Pressure" field,
]
Jun 2001