Thermo Scientific Dionex ICS-5000, Operator'S Manual

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Dionex ICS-5000 Operator’s Manual
384
Doc. 065342-06 12/11
1. Connect enough backpressure tubing to the cell outlet to shrink bubbles
and allow them to pass more easily through the cell. Refer to Table 9-9 for
the appropriate type and number of backpressure tubing coils required.
Table 9-10 lists the correct pressure range for each type of suppressor.
2. To verify that the required amount of backpressure is being generated,
follow the instructions in Backpressure Coil Pressure Test for Dionex
Suppressors (Document No. 031759), the flier shipped with the
suppressor. The instructions are also in the suppressor manual on the
Thermo Scientific Reference Library DVD (P/N 053891).
3. If a bubble is still trapped in the cell, try these techniques to remove it:
•
Loosen and then tighten the cell outlet fitting.
•
Temporarily disconnect the backpressure coil from the suppressor
REGEN IN
port and then plug and unplug the end of the tubing with
your fingertip two or three times to create a pressure difference.
Suppressor
Type Column
Format Flow Rate
(mL/min) Backpressure
Coils
Dionex AES 2 mm 0.25 to 0.50 2 red*
3 mm 0.50 to 1.00 2 red
4 mm 1.00 to 2.00 1 red
Dionex SRS or
Dionex MMS 2 mm or 3 mm <0.25 2 red
2 mm or 3 mm 0.25 to 0.50 1 red
*The red coil (P/N 045878) consists of 0.125 mm (0.005 in) ID PEEK tubing
with fittings.
Table 9-9. Backpressure Coil Requirements
Suppressor Type Pressure Range
Dionex AES 0.14 to 0.70 MPa (20 to 100 psi)
Dionex SRS or Dionex MMS

0.28 MPa (40 psi)
Table 9-10. Suppressor Operating Pressure Ranges