Agilent Technologies Quaternary Pump 1100 Series - Manual (Page 29)

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Installing the Pump
Priming and Purging the System
5 Push syringe adapter onto syringe.
6 Pull syringe plunger to draw at least 30 ml of solvent through degasser and
tubing.
7 Replace the priming solvent with the new solvent of your choice.
8 Pull syringe plunger to draw at least 30 ml of solvent through degasser and
tubing.
9 Disconnect syringe adapter from solvent tube.
10 Connect the solvent tube to the appropriate channel of the MCGV.
11 Repeat step 3 to step 10 for the other solvent channels.
N O T E When priming the vacuum degasser with a syringe the solvent is drawn
through the degasser tubes very quickly. The solvent at the degasser outlet will
therefore not be fully degassed. Pump for approximately 10 minutes with your
selected flow rate before starting any application. This will allow the vacuum
degasser to properly degas the solvent in the degasser tubes.
N O T E The pump should never be used for priming empty tubings (never let the pump
run dry). Use the syringe to draw enough solvent for completely filling the
tubings to the pump inlet before continueing to prime with the pump.
Priming with the Pump
When the pumping system has been turned off for a certain time (for
example, overnight) oxygen will rediffuse into the solvent channels between
the vacuum degasser and the pump. Solvents containing volatile ingredients
will slightly lose these, if left in the degasser without flow for a prolonged
period of time. Therefore priming of the vacuum degasser and the pumping
system is required before starting an application.
1 Open the purge valve of your pump (by turning it counterclockwise) and set
flow rate to 3-5 ml/min.
2 Flush the vacuum degasser and all tubes with at least 30 ml of solvent.
3 Set flow to required value of your application and close the purge valve.
4 Pump for approximately 10 minutes before starting your application.
5 Repeat step 1 to step 4 for other solvent channels, where needed.