1290 Infinity II High-Speed Pumps User Manual 49
3Using the Pump
Recommendations for Degassers
Recommendations for Degassers
• Check compatibility of solvents with degasser and application
• Use the standalone standard degassers (G1322A or G7122A) for RI
applications, flow rates higher than 5 mL/min, with low boiling point
solvents (<60 °C) and with hexane, tetrahydrofuran and any halogenated
solvents.
• Use integrated or a standalone high-performance degasser (G4225A) for
all other applications.
• If enough vacuum for the optimal degassing performance cannot be reached
or maintained (as indicated by yellow or red status LED in standalone
degassers, or specific error messages on integrated degassers), power cycle
the module.
• If, after power cycling, vacuum still cannot be reached or maintained on
integrated degassers, use the Evacuation Mode, available in the instrument
control screen of Agilent Lab Advisor.
Figure 8 Degasser Control for internal degassers in Agilent Lab Advisor
Liquid inside the degasser
In case a low boiling point solvent condensates or there is a leak, liquid can
accumulate inside the degasser chambers, and this will compromise
performance.
When this happens,
 Purge all solvent channels with isopropanol.
 Keep unused channels filled with isopropanol.
Follow the instructions prompted on the screen when starting the Evacuation
Mode.
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