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TABLE OF CONTE NTS
7.5. Dynamic Multipoint Span Calibration............................................................................................... 195
7.6. Special Calibration Requirements for Independent Range or Auto Range ......................................... 196
7.7. References ..................................................................................................................................... 196
8. INSTRUMENT MAINTENANCE............................................................................................................197
8.1. Maintenance Schedule .................................................................................................................... 197
8.2. Predictive Diagnostics..................................................................................................................... 201
8.3. Maintenance Procedures ................................................................................................................. 202
8.3.1. Changing the Sample Particulate Filter .................................................................................... 202
8.3.2. Changing the IZS Permeation Tube ......................................................................................... 203
8.3.4. Changing the External Zero Air Scrubber ................................................................................. 205
8.3.5.1. Predicting When the Converter Catalyst Should Be Replaced. ............................................ 206
8.3.6. Checking for Light Leaks ......................................................................................................... 209
8.3.7. Changing the Critical Flow Orifice ............................................................................................ 209
9. TROUBLESHOOTING & SERVICE .......................................................................................................211
9.1. General Troubleshooting................................................................................................................. 211
9.1.1. Fault Diagnosis with Warning Messages ................................................................................... 212
9.1.2. Fault Diagnosis with Test Functions ......................................................................................... 216
9.1.3. Using the Diagnostic Signal I/O Function ................................................................................. 217
9.1.4. Status LEDs ............................................................................................................................ 218
9.1.4.1. Motherboard Status Indicator (Watchdog) ........................................................................ 219
9.1.4.2. CPU Status Indicator ........................................................................................................ 219
9.1.4.3. Relay Board Status LEDs .................................................................................................. 219
9.2. Gas Flow Problems ......................................................................................................................... 220
9.2.1. Zero or Low Sample Flow ........................................................................................................ 221
9.2.2. High Flow ................................................................................................................................ 221
9.3. Calibration Problems ...................................................................................................................... 221
9.3.1. Negative Concentrations.......................................................................................................... 221
9.3.2. No Response ........................................................................................................................... 222
9.3.3. Unstable Zero and Span .......................................................................................................... 222
9.3.4. Inability to Span - No SPAN Button.......................................................................................... 222
9.3.5. Inability to Zero - No ZERO Button .......................................................................................... 223
9.3.6. Non-Linear Response............................................................................................................... 223
9.3.7. Discrepancy Between Analog Output and Display ..................................................................... 224
9.4. Other Performance Problems .......................................................................................................... 224
9.4.1. Excessive Noise....................................................................................................................... 224
9.4.2. Slow Response ........................................................................................................................ 224
9.4.3. The Analyzer Doesn't Appear on the LAN or Internet................................................................ 225
9.5. Subsystem Checkout ...................................................................................................................... 225
9.5.1. Detailed Pressure Leak Check .................................................................................................. 225
9.5.2. Performing a Sample Flow Check ............................................................................................. 226
9.5.3. AC Power Configuration ........................................................................................................... 226
9.5.4. DC Power Supply..................................................................................................................... 227
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C Bus ................................................................................................................................... 228
9.5.6. Touchscreen Interface ............................................................................................................. 228
9.5.7. LCD Display Module................................................................................................................. 228
9.5.8. Relay Board ............................................................................................................................ 228
9.5.9. Motherboard ........................................................................................................................... 229
9.5.9.1. A/D functions ................................................................................................................... 229
9.5.9.2. Analog Output Voltages .................................................................................................... 229
9.5.9.3. Status Outputs ................................................................................................................. 230
9.5.9.4. Control Inputs .................................................................................................................. 230
9.5.10. CPU....................................................................................................................................... 230
9.5.11. RS-232 Communication ......................................................................................................... 231
9.5.11.1. General RS-232 Troubleshooting .................................................................................... 231
9.5.11.2. Modem or Terminal Operation ........................................................................................ 231
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Scrubber ................................................................................................. 203
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Scrubber Should Be Replaced. ................................................... 203
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Scrubber ...................................................................... 204
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Scrubber Material................................................................................. 204
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S SO
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Converter Catalyst Material ....................................................... 207
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Teledyne ML - T101 Operation Manual
Converter......................................................... 206
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Table of Contents
Troubleshooting
