1290 Infinity II High-Speed Pumps User Manual 41
3Using the Pump
Best Practices
Conditioning may be necessary:
• After a long period of standby
• After running out of solvent
• After service or repair
Prime
The Prime function is helpful if air has entered the pump heads and cannot be
removed by conditioning for 15 minutes. The module draws solvent at a high
speed with all pump drives simultaneously and dispenses it into the waste
position of the automatic purge valve. This is done 20 times and is stressful to
the valve and rotor seal. Therefore, it should be performed only as a last resource,
before forcefully filling the pump heads with a syringe or attempting to repair the
pump heads.
Use the Prime function to:
• Free a potentially stuck valve.
The described functions can be triggered from the driver interface:
• 1290 Infinity and 1290 Infinity II
Filling empty solvent lines
Damage to the seals
 Use a syringe or the Purge function to fill empty solvent lines.
 Do not use the Prime procedure to fill empty solvent lines.
For parameter settings, see Best Practices for Using an Agilent LC System
Technical Note.
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