Leak Testing A G1290/G1883 To Gc Interface; Prepare The Sampler; Carrier Gas Flow Path - Agilent Technologies G1289 Operating Manual

Maintaining the Instrument

Leak Testing a G1290/G1883 to GC Interface

Leak Testing a G1290/G1883 to GC Interface
For the G1290/G1883, you can check the carrier gas flow system for leaks by
performing a pressure decay test.
WARNING
The heated zones of the unit can burn your skin. Allow the zones to cool off
before performing the test.

Prepare the Sampler

1.
2.
Figure 29. Plug the transfer line
3.

Carrier Gas Flow Path

1.
2.
110
Set the three heated zones to ambient temperature.
Detach the transfer line from the inlet or interface and plug it with either a
new inlet septum or a leak test fitting as shown in Figure 29.
A new inlet septum
Remove the pneumatics cover and loop oven cover to give you access to
all of the tubing, valve, and manifold connections.
Open the Mass flow controller full counter-clockwise (CCW) until the
carrier flow path pressurizes to line pressure. The carrier pressure should
read between 40 to 60 psi, about 4 bar.
Shut off the ball valve installed between the source and the headspace
sampler. An alternative would be to turn the Mass Flow Controller full
clockwise (CW).
Leak test fitting
or
325-0050010-HSP