5.32
9. Fit new cable tie.
10. Ensure the sample system is leak tight. See Section 5.3.4.
11. Calibrate analyser including pressure compensation.
5.3.2.8 Replacement of Sample Tubes
1. Carry out steps 1 to 4 of Section 5.3.2.
2. The sample inlet and outlet tubes (15 and 16) can now be removed by undoing the 3/8
inch AF nuts inside the transducer housing.
3. Re-assemble in the reverse order. New 'O' rings (14) should be fitted.
4. Leak test the assembly (Section 5.3.4) and recalibrate the analyser (Section 3.6).
5.3.2.9 Cleaning of the Measuring Cell
The window of the type 325 and 364 cells may be cleaned. If the loop gain is poor (see Section
4.6) it is possible the window of the cell has been contaminated.
1. Remove the measuring cell (see Section 5.3.2.1).
2. Examine the window. If the inner surface is contaminated the window may be removed
for cleaning.
3. Remove the four 2.5mm screws holding the window bezel in place.
4. Remove bezel and window.
5. Clean the window by gentle rubbing and using water or solvent. Do not use an abrasive
which may scratch the glass. Dry.
6. Replace 'O' ring. Part no. 2323-6343 (325 cell) or 2323-6963 (364 cell).
7. Replace paper gasket between bezel and window. Part no. 00325351.
8. Reassemble window and bezel.
9. Replace the measuring cell into the magnet frame.
10. Test complete transducer unit for leaks. See Section 5.3.4.
Note: Do not attempt to clean the internal parts of the cell. The dumbell and suspension are
delicate and are easily damaged. Cells damaged in this way will not be covered by the
Servomex guarantee.
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