Inlet Overview; Split/Splitless Inlet; Replacing The Split/Splitless Inlet - Agilent Technologies 7820A Service Manual

Inlet overview

Split/Splitless Inlet

24
Agilent 7820 GC Service
Inlets are a means of introducing a sample into the carrier gas
stream and then into the analyzing column. The term "Inlets"
includes:

Injection ports, for use with a syringe

Sampling valves for high sample size reproducibility
This is the general-purpose inlet for use with capillary columns.
It vaporizes the sample in a heated liner, then delivers all
(splitless mode) or a specified fraction (split mode) of the vapor
to the column.

Replacing the split/splitless inlet

Cool down the oven.
Turn off the GC main power switch and disconnect its power
cord.
Hazardous voltages are present in the
mainframe when the GC power cord is connected.
Avoid a potentially dangerous shock hazard by
disconnecting the power cord before removing
any GC panels.
Components can be damaged by static electricity:
be sure to wear an ESD strap grounded to the GC
chassis while performing this procedure.