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Maintenance
Unclogging the Flow Cell
To try to eliminate a blockage in the active cell or in
its inlet or outlet tubing, pump solvent backwards
through the flow cell.
1
Connect a high-pressure pump to the outlet
and direct the inlet to waste.
2
For the pump, set the maximum pressure below
500 psi (34 bar).
3
Beginning at a flow rate of 0.1 mL/min,
gradually increase the flow rate, in increments
of 0.1 mL/min.
A significant pressure drop indicates that the
blockage has been removed.
Note: For the capillary flow cell use a 100%
solution of the organic solvent that the system is
being run with. This procedure can also be used
to clean the capillary flow cell.
Replacing Tubing and/or the Flow Cell
To replace tubing and/or the flow cell, refer to the
appropriate instructions for the type of flow cell
installed.
• For an analytical or preparative flow cell, see
page
4-6
• For a microbore flow cell, see page
• For an SFC flow cell, see page
• For a capillary flow cell see page
Be aware that the analytical, preparative, or
microbore flow cell fit into the same flow cell
assembly. Just make sure the correct inlet and
outlet tubing are used. The flow cell for the SFC
flow cell is unique and cannot be installed in the
assembly for another kind of flow cell. If you have
the SFC flow cell, you can purchase the flow cell
assembly for another kind of flow cell and install it
in the detector. See
Appendix E
information.
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4-12
4-16
4-21
for ordering
4
4-5
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