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Instruction Manual
748332-F
April 2003
ii Contents Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 NDIR
4-0 MAINTENANCE AND TROUBLESHOOTING.........................................................................................4-1
4-1 Overview................................................................................................................................4-1
4-2 PCB Replacement.................................................................................................................4-1
4-3 Power Fuse Replacement .....................................................................................................4-2
4-4 Module Fan Replacement .....................................................................................................4-3
4-5 Chopper Motor Replacement ................................................................................................4-4
4-6 Source Replacement.............................................................................................................4-4
4-7 Detector Removal..................................................................................................................4-5
4-8 Flow Sensor Replacement ....................................................................................................4-6
4-9 Case Temperature Sensor Replacement..............................................................................4-6
4-10 Thermal Fuse Replacement ..................................................................................................4-6
4-11 Oscillator Tune/Source Balance Shutter Adjustment............................................................4-6
4-12 Cleaning Cells........................................................................................................................4-8
4-13 Cell Desiccant........................................................................................................................4-10
4-14 Modulation Check..................................................................................................................4-11
5-0 REPLACEMENT PARTS..........................................................................................................................5-1
5-1 Matrix.....................................................................................................................................5-1
5-2 Replacement Parts................................................................................................................5-2
6-0 RETURN OF MATERIAL..........................................................................................................................6-1
6-1 Return Of Material .................................................................................................................6-1
6-2 Customer Service..................................................................................................................6-1
6-3 Training..................................................................................................................................6-1
7-0 APPENDIX A. MENU DISPLAYS ...........................................................................................................7-1
8-0 INDEX 8-1