Advertisement
Contents
Chapter 5
Chapter 6
Chapter 7
x
Model 42i Trace Level Instruction Manual
Zero and Span Check........................................................................ 4-20
Preventative Maintenance..............................................................................5-1
Safety Precautions ............................................................................... 5-1
Replacement Parts............................................................................... 5-2
Cleaning the Outside Case .................................................................. 5-2
Ozonator Air Feed Drying Column Replacement ............................... 5-2
Capillaries Inspection and Replacement .............................................. 5-2
Thermoelectric Cooler Fins Inspection and Cleaning.......................... 5-4
Fan Filters Inspection and Cleaning .................................................... 5-4
Pump Rebuilding ................................................................................ 5-5
Troubleshooting.................................................................................................6-1
Safety Precautions ............................................................................... 6-1
Troubleshooting Guides...................................................................... 6-1
Board-Level Connection Diagrams ..................................................... 6-6
Connector Pin Descriptions ................................................................ 6-8
Service Locations............................................................................... 6-22
Servicing .............................................................................................................7-1
Safety Precautions ............................................................................... 7-2
Firmware Updates ............................................................................... 7-4
Accessing the Service Mode................................................................. 7-4
Replacement Parts List ........................................................................ 7-4
Cable List............................................................................................ 7-6
External Device Connection Components .......................................... 7-6
Removing the Measurement Bench and Lowering the Partition Panel 7-8
Pump Replacement ............................................................................. 7-9
Vacuum Pump Diaphragm and Valve Replacement.......................... 7-10
Diaphragm Replacement................................................................ 7-11
Valve Replacement......................................................................... 7-12
Fan Replacement............................................................................... 7-14
PMT Cooler and Reaction Chamber Assembly Replacement............ 7-15
Photomultiplier Tube Replacement .................................................. 7-17
PMT High Voltage Power Supply Replacement................................ 7-18
PMT Voltage Adjustment ................................................................. 7-19
Reaction Chamber Cleaning or Removal .......................................... 7-20
NO
-to-NO Converter Replacement ................................................ 7-22
2
Solenoid Valve Replacement ............................................................. 7-23
Ozonator Assembly Replacement ...................................................... 7-25
Ozonator Transformer Replacement ................................................. 7-26
Input Board Replacement ................................................................. 7-27
Input Board Calibration.................................................................... 7-28
DC Power Supply Replacement ........................................................ 7-29
Analog Output Testing ..................................................................... 7-30
Thermo Fisher Scientific
Advertisement
Troubleshooting
