Replacing The Filter Frit In A Proflow Flow Meter - Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual

7. Observe the following:
♦ If the module was powered off by the power switch for a longer period (≥ 1 day),
allow a warm-up period of 24 hours to achieve optimum reproducibility.
♦ If the module was powered off by the power switch less than one day, allow a warm-
up period of 60 minutes to achieve full accuracy.

7.7.3 Replacing the Filter Frit in a ProFlow Flow Meter

This section applies for ProFlow flow meters only.
The flow meter inlets on the ProFlow flow meter accommodate a built-in inline filter each.
If a filter frit is clogged, replace the filter frit.
Description
Filter frits for inline filter (2 frits, porosity: 2 µm)
To replace the filter frit in an inline filter on the inlet of the ProFlow flow meter, follow
these steps:
1. Stop the pump flow.
2. On the ProFlow flow meter, disconnect the capillary from the inlet.
3. Open the inline filter with a wrench (size 13 mm). Remove the filter frit.
4. Pipette a drop of solvent into the frit holder and insert the replacement frit. Close the
filter housing. The solvent keeps the frit in the holder during closing.
5. Perform a Detailed Leak Test for the flow meter (→ page 134).
Operating Instructions
UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Part No.
6268.0036
Page 205