If The Test Passes - Agilent Technologies 7697A Troubleshooting Manual

G4556A

If the test passes

Agilent 7697A Troubleshooting
G4557A
Set the carrier pressure to a low value.
6
If using HS Control or GC Control:
Cool the GC inlet and column oven.
a
When cool, press [Carrier].
b
Set the carrier pressure setpoint to 14 kPa (2 psi). (If
c
in a flow mode, reduce the flow setpoint until the
carrier pressure is below 14 kPa (2 psi).)
If using GC + HS Control:
• Press [Carrier], then reduce the flow setpoint until the
carrier pressure is below 14 kPa (2 psi).
• Leave the GC carrier pressure or flow unchanged.
Start the test. Press [Service Mode], select Restriction &
7
pressure decay, then press [Enter].
The test begins.
8 The test displays information for the current action (for
example, "Purging," "Zeroing Pressure Sensor," or "Moving
Test Vial," and the pressure and flow readings).
See "If the test passes"
9 After the test passes, restore the instrument to operating
condition.
If the test passes all stages, the sampling system is leak free.
If still experiencing leak- like symptoms:
• Check the transfer line.
• Check the interface to the GC.
1
or "If the test fails".
4
Leaks
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