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Figure 3.11.
Correct alignment of Teflon tubing in fingertight fittings.
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6.
Systems WITHOUT CC-5 Preheater Module: Connect the TEFLON detector inlet tube di-
rectly to the column outlet. Then connect the detector outlet tube to the auxiliary elec-
trode block. Route outlet from the auxiliary electrode to waste through the groove in the
CC-5 cabinet (see Figure 3.1, #30).
7.
Systems WITH CC-5 Preheater Module: Connect the column to the thin STAINLESS
STEEL tube of the preheater block (Figure 3.1, #22). The CC-5 Preheater is shipped
with the tubing already wrapped in place. Remove the tape which is used to keep the
tubing secure during shipping. If for some reason you can't place your column inside
the CC-5, it may be necessary to obtain extra tubing (MR-4015) and a zero-dead-vol-
ume union (MR-4063) to extend the tubing outside the compartment. Note that the
large side slots allow access for the column body even with the top down.
NOTE: For units with cell temperature control (preheater), DO NOT allow the thin met-
al tubing on the inlet to touch the stainless steel auxiliary block. The plastic fitting on
the capillary steel inlet tube acts as an insulator between the tubing (at ground poten-
tial) and the auxiliary electrode (at its own potential). If you allow the steel tubing to
protrude beyond the end of the fitting (at the cell end) you will short-circuit the cell.
After making this connection, use an ohmmeter to see if there is a continuous circuit
between the stainless steel tubing and the auxiliary electrode (#22 and #7 of Figure
3.1). If there is, loosen the plastic nut, back the tubing out slightly, and retighten the
nut. Use the ohmmeter again to make sure there is no electrical connection between
the two components.
Section 3. Installation
CORRECT
WRONG
(DEAD VOLUME)
17
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