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Teledyne API T802 Paramagnetic O
2
Analyzer Operation Manual Table of Contents
xi
9.4.1. Pressure Calibration............................................................................................................................176
9.4.2. Flow Calibration...................................................................................................................................178
9.5. Calibration of the Optional CO
2
Sensor......................................................................................................179
9.5.1. CO
2
Calibration Setup .........................................................................................................................179
9.5.2. Set CO
2
Span Gas Concentration.......................................................................................................179
9.5.3. Activate CO
2
Sensor Stability Function ...............................................................................................180
9.5.4. CO
2
Zero/Span Calibration:.................................................................................................................181
10. MAINTENANCE SCHEDULE & PROCEDURES ...........................................................185
10.1. Maintenance Schedule .............................................................................................................................185
10.2. Predictive Diagnostics ..............................................................................................................................189
10.3. Maintenance Procedures..........................................................................................................................189
10.3.1. Replacing the Sample Particulate Filter ............................................................................................189
10.3.2. Rebuilding the Sample Pump............................................................................................................190
10.3.3. Performing Leak Checks ...................................................................................................................191
10.3.4. Performing a Sample Flow Check.....................................................................................................192
10.3.5. Cleaning the Optical Bench...............................................................................................................193
10.3.6. Cleaning Exterior Surfaces of the T802 ............................................................................................193
11. TROUBLESHOOTING AND SERVICE ..........................................................................195
11.1. General Troubleshooting..........................................................................................................................195
11.1.1. Fault Diagnosis with WARNING Messages ......................................................................................196
11.1.2. Fault Diagnosis with TEST Functions ...............................................................................................199
11.1.3. DIAG SIGNAL I/O: Using the Diagnostic Signal I/O Function .....................................................200
11.2. Using the Internal Electronic Status LEDs ...............................................................................................202
11.2.1. CPU Status Indicator.........................................................................................................................202
11.2.2. Relay PCA Status Indicators.............................................................................................................202
11.3. Gas Flow Problems ..................................................................................................................................203
11.3.1. T802 Internal Gas Flow Diagrams.....................................................................................................204
11.3.2. Typical Sample Gas Flow Problems .................................................................................................205
11.4. Calibration Problems ................................................................................................................................207
11.4.1. Miscalibrated .....................................................................................................................................207
11.4.2. Non-Repeatable Zero and Span .......................................................................................................207
11.4.3. Inability to Span – No SPAN Button..................................................................................................208
11.4.4. Inability to Zero – No ZERO Button...................................................................................................208
11.5. Other Performance Problems...................................................................................................................208
11.5.1. Temperature Problems......................................................................................................................208
11.6. Subsystem Checkout................................................................................................................................209
11.6.1. AC Mains Configuration ....................................................................................................................209
11.6.2. DC Power Supply ..............................................................................................................................209
11.6.3. I
2
C Bus...............................................................................................................................................210
11.6.4. Touchscreen Interface.......................................................................................................................210
11.6.5. LCD Display Module..........................................................................................................................210
11.6.6. Relay Board.......................................................................................................................................211
11.6.7. Sensor Assembly...............................................................................................................................211
11.6.8. Pressure/Flow Sensor Assembly ......................................................................................................211
11.6.9. Motherboard ......................................................................................................................................212
11.6.10. CPU .................................................................................................................................................213
11.6.11. RS-232 Communications ................................................................................................................214
11.6.12. Optional CO
2
Sensor.......................................................................................................................215
11.7. Repair Procedures....................................................................................................................................215
11.7.1. Repairing Sample Flow Control Assembly........................................................................................215
11.7.2. Disk-On-Module Replacement Procedure ........................................................................................216
11.8. FAQ’s........................................................................................................................................................217
11.9. Technical Assistance................................................................................................................................218
12. PRINCIPLES OF OPERATION ......................................................................................219
12.1. Paramagnetic Oxygen Measurement.......................................................................................................219
07275B DCN6418