Shutting Down The Device; Short-Term Shutdown (Interruption Of Operation) - Thermo Scientific VF-F20-A Operating Manual

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6 Operation

6.10 Shutting Down the Device

6.10.1 Short-Term Shutdown (Interruption of operation)

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If the device will not be operated for some time, follow the instructions
on shutting down the device in this section.
TIP The Chromeleon software provides procedures for automatically
preparing the chromatography system for shutdown. The procedures
include, for example, operations for reducing the flow rate, reducing the
temperature in temperature-controlled devices, and turning off the
detector lamps.
For information about Smart Shutdown and Smart Standby, refer to the
Chromeleon Help.
To interrupt operation of the device for a short period (short-term
shutdown), for example, overnight, observe these guidelines for the
Vanquish system modules, as required by your system arrangement:
TIP Purge the needle wash port with an organic solvent, such as
isopropanol, before you interrupt operation to avoid organic growth in
the needle wash system.
Purge the flush pump to flush buffer loop with an organic solvent, such
as isopropanol, before you interrupt operation to avoid organic growth
in the flush buffer loop system.
Run an internal needle rinse cycle with an organic solvent, such as
isopropanol, before you interrupt operation to avoid organic growth
inside the needle capillary and needle.
Keep in mind that organic content in the solvent can vaporize during
interruption, thus decreasing the solvent level.
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Apply a flow of 0.05 mL/min and have the pump deliver an
appropriate solvent.
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Check the lower pressure limit for the pump and adapt the value if
necessary. If the pressure falls below the lower limit, the pump stops
the flow.
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Set the injection valve in the autosampler to the Inject position.
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Set the fraction collection valve in the device to the Waste position.
Integral Fraction Collector FT (VF-F20-A) Operating Manual