viii Table of Contents 083730300A DCN8101
4.5.1 Dark Calibration Test .......................................................................................................................99
4.5.2 Pressure Calibration .........................................................................................................................99
4.5.3 Flow Calibration .............................................................................................................................100
4.6 Calibration of Optional Sensors .................................................................................................................100
4.6.1 O
2
Sensor Calibration ....................................................................................................................100
4.6.2 CO
2
Sensor Calibration Procedure ................................................................................................101
4.7 EPA Protocol Calibration ...........................................................................................................................101
5. Maintenance and Service ......................................................................................................... 102
5.1 Maintenance Schedule ..............................................................................................................................102
5.2 Predicting Diagnostics ...............................................................................................................................105
5.3 Operational Health Checks ........................................................................................................................106
5.4 Software/Firmware Updates ......................................................................................................................107
5.4.1 Remote Updates ............................................................................................................................107
5.4.2 Manual Reload/Update Procedures ...............................................................................................107
5.4.3 Instrument Display Calibration (for earlier instruments) .................................................................108
5.5 Time Zone Changes ..................................................................................................................................109
5.6 Maintenance Procedures ...........................................................................................................................110
5.6.1 Replacing the Sample Particulate Filter .........................................................................................110
5.6.2 Rebuilding the Sample Pump ........................................................................................................111
5.6.3 Performing Leak Checks ................................................................................................................111
5.6.3.1 Vacuum Leak Check and Pump Check...........................................................................111
5.6.3.2 Pressure Leak Check ......................................................................................................111
5.6.4 Performing a Sample Flow Check .................................................................................................112
5.6.5 Cleaning the Optical Bench............................................................................................................112
5.7 Service and Troubleshooting .....................................................................................................................112
5.7.1 Cleaning Exterior Surfaces of the T300/T300M .............................................................................113
5.7.2 Fault Diagnosis with Alerts .............................................................................................................114
5.7.3 Fault Diagnosis with Dashboard Functions ....................................................................................115
5.7.4 The Diagnostic Signal I/O Function ...............................................................................................117
5.7.5 Status LEDs ...................................................................................................................................117
5.7.6 Motherboard Status Indicator (Watchdog) .....................................................................................117
5.7.7 Sync Demodulator Status LEDs.....................................................................................................118
5.7.8 Relay Board Status LEDs ..............................................................................................................119
5.7.9 Flow Problems ...............................................................................................................................121
5.7.9.1 Flow is Zero .....................................................................................................................122
5.7.9.2 Low Flow .........................................................................................................................122
5.7.9.3 High Flow .........................................................................................................................122
5.7.9.4 Displayed Flow = “Warnings” ..........................................................................................123
5.7.9.5 Actual Flow Does Not Match Displayed Flow .................................................................123
5.7.9.6 Sample Pump ..................................................................................................................123
5.7.10 Calibration Problems ......................................................................................................................123
5.7.10.1 Miscalibrated ...................................................................................................................123
5.7.10.2 Non-Repeatable Zero and Span .....................................................................................124
5.7.10.3 Inability to Span – No SPAN Button (CALS) ...................................................................124
5.7.10.4 Inability to Zero – No ZERO Button (CALZ) ....................................................................124
5.7.11 Other Performance Problems ........................................................................................................125
5.7.12 Temperature Problems ..................................................................................................................125
5.7.12.1 Box Temperature .............................................................................................................125
5.7.12.2 Sample Temperature .......................................................................................................125
5.7.12.3 Bench Temperature .........................................................................................................125
5.7.12.4 GFC Wheel Temperature ................................................................................................126
5.7.12.5 IR Photo-Detector TEC Temperature ..............................................................................127
5.7.13 Excessive Noise .............................................................................................................................127
To Next Page
Loading...