Download Model 42i NOx- User Manual

Contents
Thermoelectric Cooler Fins Inspection and Cleaning..............5-4
Fan Filters Inspection and Cleaning ........................................5-4
Pump Rebuilding....................................................................5-5
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Model 42i NOx Instruction Manual
Chapter 6
Troubleshooting.............................................................................. 6-1
Safety Precautions ...................................................................6-1
Troubleshooting Guides..........................................................6-2
Board-Level Connection Diagrams .........................................6-6
Connector Pin Descriptions ....................................................6-8
Service Locations...................................................................6-22
Chapter 7
Servicing .......................................................................................... 7-1
Safety Precautions ...................................................................7-3
Firmware Updates...................................................................7-4
Replacement Parts List ............................................................7-4
Cable List................................................................................7-5
Removing the Measurement Bench and
Lowering the Partition Panel...................................................7-8
Pump Replacement .................................................................7-9
Fan Replacement...................................................................7-10
PMT Cooler and Reaction Chamber
Assembly Replacement..........................................................7-11
Photomultiplier Tube Replacement ......................................7-13
PMT High Voltage Power Supply Replacement ...................7-15
PMT Voltage Adjustment .....................................................7-16
Reaction Chamber Cleaning or Removal ..............................7-17
NO2-to-NO Converter Replacement....................................7-19
Ozonator Assembly Replacement ..........................................7-21
Ozonator Transformer Replacement .....................................7-23
Input Board Replacement .....................................................7-23
Input Board Calibration........................................................7-25
DC Power Supply Replacement ............................................7-26
Analog Output Testing .........................................................7-27
Analog Output Adjustment...................................................7-29
Pressure Transducer Assembly Replacement..........................7-30
Pressure Transducer Calibration ...........................................7-31
Temperature Control Board Replacement.............................7-33
Ambient Temperature Calibration ........................................7-34
Fuse Replacement .................................................................7-35
Scrubber Replacement...........................................................7-36
I/O Expansion Board (Optional) Replacement .....................7-37
Digital Output Board Replacement.......................................7-38
Motherboard Replacement....................................................7-39
Measurement Interface Board Replacement ..........................7-40
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