Metrohm 896 Professional Detector – Conductivity & Amperometry - Manual (Page 41)

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5 Operation and maintenance
2.896.0030 896 Professional Detector – Conductivity & Amperometry
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3 In MagIC Net™, set the maximum pressure of the high pressure
pump to 5 MPa.
4 Rinse the detector thoroughly with eluent.
5.3 Amperometric detector
5.3.1 Maintenance
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™.
5.3.2 Preheating capillary maintenance
The preheating capillary can become blocked, e.g. if the IC system has
inadvertently been run dry.
To dissolve this blockage, proceed as follows:
Rinsing the preheating capillary
1 Remove the separation column
Remove the separation column from the IC system and replace with
a coupling (6.2744.040).
2 Adjust settings in MagIC Net™
In MagIC Net™, adjust the following settings:
￭ Maximum pressure of the high pressure pump: 5 MPa
￭ Flow rate: < 0.1 mL/min
3 Rinse the system with the same eluent as before the blockage or
with ultrapure water.
The eluent requires sufficient time to trickle through and dissolve the
crystals.
4 Do not increase the flow rate until the pressure has stabilized.