Column Switching Valve - Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual

UltiMate 3000 Series:
TCC-3000SD and TCC-3000RS Column Compartments

7.3 Column Switching Valve

The TCC can hold one or two column switching valves (→ page 17).
To ensure optimum operation of the valve, observe the following guidelines:
• The valve should not be used with concentrated formic acid.
Operating, storing, or shipping the valve below 0 °C with water in the fluid passages may
•
cause failure of the sealing surfaces.
• To connect the capillaries to the column switching valve, install only Viper fitting
connections and/or the ferrules and fitting nuts provided in the accessories kit or original
Dionex spare parts.
Correct
(Viper) (nanoViper)
Fig. 44: Viper fitting connections and other valve ferrules (examples)
Maintenance requirements are kept to a minimum. In most instances, it will be sufficient to
clean the valve by flushing all lines with an appropriate solvent. The nature of the solvent
to be used depends on the samples and the mobile phases that are used.
The seals (rotor seal and stator face seal) are consumables that should be replaced as
necessary (→ page 107).
Page 98
Correct
(Rheodyne) (biocomp. valve)
Wrong
(Valco)
Operating Instructions