Thermo Scientific Dionex Easion, Operator'S Manual

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Dionex Easion Operator’s Manual
18
Doc. 155028-01 08/20
Secondary Pump Head
The secondary pump head delivers eluent to the pressure transducer. The
waste valve is located on the front of the secondary pump head (see
Figure 2-5 ).
To open the waste valve, turn the knob one-half turn counterclockwise.
When the waste valve is in the open position, all output is directed to
waste.
2.3.2 Pressure Transducer
The pressure transducer measures the system pressure at the point at
which the eluent flows from the pump head outlet check valve. Pressure
readings indicate whether the pumping system is delivering smooth,
accurate flow. You can monitor pressure readings from Chromeleon.
The system pressure should remain consistent (no more than a 3%
difference from one pressure reading to the next). High and low pressure
limits can be used to stop the pump flow if a limit is exceeded. Pressure
limits are selected in the Chromeleon Instrument Configuration Manager
(in the Dionex Easion Properties dialog box).
For troubleshooting
guidance if a pressure limit is exceeded, see Section 4.7 .
Figure 2-5. Dionex Easion Pump Components
Secondary
Pump Head
Primary Pump
Head
Outlet Check
Valve
Inlet Check
Valve
Waste Valve