November 16, 2016, 715004521 Rev. C
Page 34
4. Depending on whether the system includes a CM-A or a CM-30S, do as follows:
• CM-A systems - Select “Shut down all columns”, to override all temperature settings.
• CM-30S systems - Select Off as the temperature setting.
5. Power-off the detector.
6. Stop the solvent flow to vent the system:
• From the console, select Binary Solvent Manager
• Enter a flow rate of 0 in the composition field, or press the Stop Flow icon. When you
do so, the system vents to atmospheric pressure through the vent valve in the
Convergence Manager.
7. Power-off the system.
Alternatives:
• If you prefer to leave the system powered-on, turn off the column compartment or
reduce its temperature to 40° C.
• Create a system shutdown method.
Before using any system or instruments that have been shut down, under the recommended
conditions, ensure that the new mobile phase is miscible with the recommended storage solvents:
water/methanol or water/acetonitrile. If the mobile phase and solvents for the new analysis are not
directly miscible with the recommended storage solvents –use an intermediate solvent, one that is
miscible with both the storage solvents and those for the new analysis– to flush the storage
solvents from the system and all of its components.
Warning: To avoid burn injuries resulting from skin contact with pressurized, liquid CO
2
and
breathing difficulties caused by the displacement of oxygen within the confines of the
laboratory space, stop the solvent flow, and vent the system pressure before you attempt to
maintain ACQUITY UPC
2
systems.
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