Metrohm 896 Professional Detector – Conductivity & Amperometry - Manual (Page 40)

5.2 Conductivity detector
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2.896.0030 896 Professional Detector – Conductivity & Amperometry
5.1.4 Shutting down
If the instrument is shut down for a longer period of time, the entire IC
system must be rinsed as follows to rid it of salts in order to prevent elu-
ent salts from forming crystals which may cause subsequent damage.
￭ Rinse all capillaries and the Dosino (if present) with methanol/ultrapure
water (1:4),
￭ rinse all pump tubings of the peristaltic pump with ultrapure water.
5.2 Conductivity detector
5.2.1 Maintenance
Caution
The conductivity detector must not be opened!
Warning
When rinsing the detector without column, the pressure must not
exceed 5 MPa.
In order to ensure this, set the maximum pressure of the high pressure
pump to 5 MPa in MagIC Net™.
5.2.2 Remedying blockage
The conductivity detector can become blocked if the ends of the detector
input capillary or the detector output capillary are pressed together too
tightly.
If this is the case, undo the detector input capillary or the detector outlet
capillary, respectively, and shorten it/them by a few millimeters.
If the conductivity detector is still blocked, despite free capillaries, then it
can be rinsed in the opposite direction to the normal flow direction. Pro-
ceed as follows:
1 Release the detector input capillary or the detector output capillary,
respectively, from the system.
2 Connect the detector output capillary directly to the output of the
high pressure pump.