Metrohm 940 Professional IC Vario ONE/Proep 2 - Manual (Page 50)

3.19 Initial start-up
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940 Professional IC Vario ONE/Prep 2 (2.940.1120)
4 Deaerating the high-pressure pump
￭ Push the end of the purging needle (6.2816.040) over the end of
the deaerating capillary on the purge valve.
￭ Insert the syringe (6.2816.020) in the Luer connector of the purg-
ing needle.
￭ Open the purge valve using the rotary knob (approx. ½ turn).
￭ Switch on the high-pressure pump in MagIC Net.
￭ Use the syringe to aspirate eluent until there are no more air bub-
bles in the aspirated eluent.
￭ Switch off the high-pressure pump in MagIC Net.
￭ Seal the purge valve using the rotary knob.
￭ Remove the syringe from the purging needle.
￭ Pull the purging needle out of the deaerating capillary.
5 Setting the contact pressure of the peristaltic pump
￭ Set the contact pressure of the peristaltic pump (see "Setting the
contact pressure correctly", page 36).
6 Rinsing the instrument without columns
￭ Rinse the instrument (without columns) with eluent for 5 minutes.