Agilent Technologies 7890A Troubleshooting

162 Agilent 7890 Series Troubleshooting
7 Checking for Leaks
1
Gather the following (see Consumables and parts for the PTV
inlet):
• No-hole ferrule
• 1/4-inch wrench
• Heat-resistant gloves (if the inlet is hot)
• Column nut
• New septum
• New Graphpak 3D ferrule and liner
• ECD/TCD Detector plug (part no. 5060-9055)
2 Load the inlet maintenance method and wait for the GC to
become ready.
3 Remove the column, if installed.
4 Plug the column fitting with a column nut and a no-hole
ferrule.
5 If using the septum head, and the quality of the septum (or
Microseal) and GRAPHPACK-3D ferrule on the glass liner are
unknown, replace them now. See To change the septum on
the PTV inlet and To change the liner on the PTV inlet.
6 Set the inlet to Split Mode.
7 Configure the column as 0 length.
8 Set the inlet temperature to 100 °C.
The test can find leaks at the: The test cannot find leaks at the:
septum column fitting
septum nut gas supply bulkhead fittings to the
flow module
liner O-ring seal tubing and connections in a transfer
line connected to the inlet
gold seal/washer and reducing nut
inlet body
flow manifold split vent valve
flow manifold septum purge valve
split vent tubing and trap
septum purge tubing
seals within the tubing between the
inlet flow module and the inlet body

Agilent Technologies 7890A Specifications

General

Brand	Agilent Technologies
Model	7890A
Category	Laboratory Equipment
Language	English