BAS LC-22C Instruction Manual - page 9
Making Plumbing Connections
For simple arrangements, use the innermost trough of the LC-23C. This location minimizes
detector and valve hookup tubing. If you are coupling columns together, the longer trough
will be more useful.
A special coil of tubing is provided with each LC-23C (see Figure 7). At your option, it may
be installed between the injection valve and column. The coil functions as a mobile phase
preheater, so that large temperature gradients at the head of the column are minimized. The
coil may be removed by unscrewing the central cap screw (5/32" hex).
It is advisable not to use a permanent ferrule on the outlet end of the preheater coil. A
removable high-pressure fitting provides an equivalent seal without irreversible attachment.
Use BAS part no. MR-4409.
Figure 7.
Column Preheater Coil Installed in LC-23C. This Unit is Part of a BAS 480 Liquid Chromatography System with the
Electrochemical Cell and Cell Preheater Options Installed.
Leaks
Make sure that all fittings are leak-tight at the usual operating pressure before mounting the
insulating top cover.
Insulating Top Cover
The U-shaped top cover is insulated on three sides with a foam polymer. The cover is
asymmetric; the notch in the cover goes along the right side. Mount the cover at the rear
first and then drop the front in place.
HIGH
LOW
PREHEATER POWER
LC-23C COLUMN HEATING COMPARTMENT
Section 3. INSTALLATION
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