Metrohm 844 UV/VIS Compact IC - Manual (Page 6)

Table of contents
2.8.1 Precolumns ...................................................................................................... 39
2.8.2 General information on separating columns ................................................... 40
2.8.3 Connecting the separating column (installation without column heating)...... 41
2.8.4 Connecting the separating column (installation with column heating) ........... 43
2.9 Detector......................................................................................................48
2.9.1 Installing the flow-through cell ......................................................................... 48
2.9.2 Connect the lamps........................................................................................... 49
2.9.3 Flow-through cell tubing connections.............................................................. 49
2.10 Putting into operation................................................................................50
2.10.1 Putting into operation without post column reactor......................................... 50
2.10.2 Putting into operation with post column reactor.............................................. 52
2.11 Connection of external devices ................................................................55
2.11.1 Connection of the 838 Advanced Sample Processor ..................................... 55
2.11.2 Connection of the 813 Compact Autosampler................................................ 57
3 Operation .................................................................. 59
3.1 «IC Net» - Terms.........................................................................................59
3.2 Measuring operation .................................................................................59
3.2.1 Opening a system ............................................................................................ 59
3.2.2 Defining measuring channels .......................................................................... 60
3.2.3 Connect a system ............................................................................................ 61
3.2.4 Instrument icon................................................................................................. 62
3.2.5 Hardware start/stop and baseline recording................................................... 62
3.2.6 Determination start/stop................................................................................... 62
3.3 Settings ......................................................................................................63
3.3.1 Instrument control for connected system ........................................................ 63
3.3.2 Hardware settings ............................................................................................ 70
3.3.3 Spectrum window............................................................................................. 74
4 Notes - Maintenance - Faults ................................... 77
4.1 Practical notes on ion chromatography ...................................................77
4.1.1 Separating columns ......................................................................................... 77
4.1.2 High-pressure pump ........................................................................................ 78
4.1.3 Eluents.............................................................................................................. 78
4.1.4 Peristaltic pump................................................................................................ 79
4.1.5 Connections ..................................................................................................... 79
4.2 Maintenance and servicing .......................................................................80
4.2.1 General information.......................................................................................... 80
4.2.2 Shutdown ......................................................................................................... 80
4.2.3 Changing separating columns......................................................................... 80
4.2.4 Maintenance work at the pump head.............................................................. 82
4.2.5 Replacing the pump tubing ............................................................................. 86
4.2.6 Replacing the UV lamp .................................................................................... 87
4.3 Faults and malfunctions............................................................................89
4.3.1 Error messages................................................................................................ 89
4.3.2 Malfunctions and their rectification .................................................................. 89
4.4 Quality Management and validation with Metrohm .................................91
5 Appendix ................................................................... 92
5.1 Technical data............................................................................................92
5.1.1 UV/VIS Detector................................................................................................ 92
5.1.2 Injection valve................................................................................................... 93
5.1.3 High-pressure pump ........................................................................................ 93
5.1.4 Peristaltic pump................................................................................................ 94
5.1.5 Leak detector ................................................................................................... 94