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ICS-2100 Ion Chromatography System
34 Doc. 065291-01 3/09
2.4.2 Eluent Valve
2.4.3 Pump
The ICS-2100 pump is a microprocessor-based isocratic eluent delivery
system. Its variable speed, dual-piston series design ensures pulse-free
pumping for the most demanding applications.
Primary Pump Head
The primary pump head pumps eluent into the secondary head (see
Figure 2-16
). The check valves, which prevent reverse flow through the
pump, are located on the bottom (inlet) and top (outlet) of the primary
pump head. The priming valve is on the front of the pump head.
To open the priming valve, turn the knob one-quarter to one-half turn
counterclockwise. When the priming valve is open, liquid can flow into
and out of the primary pump head via the port in the front of the valve.
NOTE The priming valve must be open when the pump is
being primed with a syringe or with isopropyl
alcohol. For detailed priming instructions, see
Section 5.16
.
The eluent valve controls the flow from
the eluent reservoir. The valve opens
automatically when the pump is started
and closes when the pump is turned off.
The valve can also be opened and closed
manually from the Chromeleon Control
panel (see Section 2.3.1
) or the touch
screen
PUMP page (see Section B.7).
This lets you perform service
procedures on pump components
without eluent leaks occurring.
Figure 2-15. Eluent Valve