Thermo Scientific thermoscientific Vanquish Pumps C, Руководство по эксплуатации

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6 • Operation
Page 104 Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
6.8.1 Automatic Purging
Automatic purging means that the solvent is automatically directed to
waste, through the wash port of the Vanquish autosampler, without
further user interaction.
Prerequisites
Automatic purging is possible only when the pump is fluidically
connected to the Vanquish autosampler and when both modules have
an appropriate firmware installed.
When these prerequisites are fulfilled, automatic purging runs by default
when you press the PURGE button on the keypad.
Dual pump : If the second pump is not connected fluidically to a Vanquish
autosampler, purge the pump manually (see Manual Purging
(
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page 105) ).
When
• The pump is operated for the first time
To flush out the isopropanol that is present in some components of
the pump when the pump is shipped from the manufacturing site
• One or more solvent lines have been empty
• To remove air bubbles that might be trapped in the system (pump
head, solvent lines) because air bubbles in the system may lead to
the following problems:
¨
Pressure pulsation
¨
High noise level or pulsation during pump operation
¨
Non-reproducible analysis
• When changing to a different type of solvent, for example, when
changing to a different analytical method
Items required
Solvents suitable for purging
To flush out the isopropanol when operating the pump for the first time,
use solvents that are miscible with isopropanol. If they are not, use an
appropriate intermediate solvent.