Thermo Scientific Dionex ICS-2000, Operator'S Manual

Page: 28 / 390

ICS-2000 Ion Chromatography System
2-8
Doc. 031857-03 4/06
Eluent Valve
The eluent valve controls the flow from the eluent reservoir. The eluent
valve opens automatically when the pump is started and closes when the
pump is turned off.
Leak Sensor
The leak sensor is installed in the drip tray at the bottom of the component
panel. If liquid accumulates in the tray, an error message is logged in the
Chromeleon Audit Trail and displayed on the LCD touch screen.
Pump Heads
The ICS-2000 includes a dual-piston serial pump. The flow rate can be set
to 0.00 mL/min or to between 0.05 and 5.00 mL/min. However, for
optimum performance, set the flow rate to between 0.40 and
2.00 mL/min. Setting the flow rate to 0.00 mL/min turns off the pump.
See
Section 2.4.3 for details about the pump.
Pressure Transducer
The pressure transducer measures the system backpressure.
Injection Valve
The injection valve is a six-port, electrically-activated valve. A 25-
µ
L
sample loop (P/N 042857) is installed on the valve at the factory. See
Section 2.4.5 for details about valve operation.
Separator and Guard Columns
Both the separator and guard columns are packed with resin and perform
the separation of the sample ions. The main function of the guard column
is to trap contaminants and remove particulates that might damage the
separator column.
Column Heater
The column heater controls the temperature of the separator and guard
columns. The temperature can be set to between 30 and 60 °C, however it
must be set at least 5 °C above the ambient temperature. See
Section 2.4.6
for details about the column heater.