Purge Mode - Agilent Technologies 8860 User Manual

5 Maintenance and Troubleshooting

Purge mode

Purge mode
Purge mode is a maintenance mode used for special pipe cleaning. Similar to the
routine purge after each injection in the normal working flow, this mode will purge
the second half of the pipeline. The difference is that this mode does not have to be
integrated in the method, but can be started or stopped at any time. This mode is
used to further reduce residue.
Selector
MPV
Multi-Position Valve
1
On/Off Valve n/Off Va V V l
Gas
Bag
Figure 21 Purge mode (maintenance) for bag version.
72
Purge Valve
Needle Valve 1
Needle Valve 2
Pump
Assembly
Agilent Gas Sample Selector for 8860 and 8890 User Manual
Sample Loop
Carrier Gas
Selector GC
Purge N
2
GC Selector
Vent
Sample Gas
Purge Gas
Carrier Gas
GC Valve 1
To Column
4
5 3
6 2
1
Sample In
• GC Valve 1 – OFF
• Sample Valve – OFF
• Purge Valve – ON
• Pump – OFF
OUT