50 Agilent 7697A Troubleshooting
4 Leaks
Vial leak test, stage 2: Test 6PORT (STANDBY)
During this stage, the HS flow paths are as shown in
Figure 8:
Figure 8 Flow paths: Vial leak test, stage 2: Test 6PORT (STANDBY)
If the test fails this stage, check:
• The vent valve. Cap the vent line and retest. If the test
passes, contact Agilent for service. If the test fails again,
the vent valve is operating properly.
SV1
PV2
Flow control module
1
2
3
4
5
6
Transfer
line
Vent
Carrier gas
Vial pressurization
gas
PS - Pressure sensor
FS - Flow sensor
SV - Switching valve
PV - Proportional valve
PV1
PS
FS
SV2
PS
Six port valve
Sample loop
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