Thermo Scientific 42iQHL Instruction Manual page 6

Contents
Chapter 5
Chapter 6
Chapter 7
vi 42iQHL Instruction Manual
Zero/Span Ratio ............................................................................. 4-25
Maintenance ...................................................................................................... 5-1
Safety Precautions ............................................................................... 5-1
Fan Filter Inspection and Cleaning ..................................................... 5-1
Thermoelectric Cooler Fins Inspection and Cleaning .......................... 5-2
Capillaries Inspection and Replacement .............................................. 5-3
Pump Rebuilding ................................................................................ 5-5
Leak Test ............................................................................................ 5-8
Troubleshooting ................................................................................................. 6-1
Safety Precautions ............................................................................... 6-1
Troubleshooting Guide ....................................................................... 6-1
Servicing ............................................................................................................. 7-1
Safety Precautions ............................................................................... 7-1
Firmware Updates ............................................................................... 7-3
Replacement Parts List ........................................................................ 7-3
Fuse Replacement ............................................................................... 7-5
Filter Replacement .............................................................................. 7-6
Fan Replacement ................................................................................. 7-7
Measurement Side Removal and Replacing ......................................... 7-9
LCD Module Replacement ............................................................... 7-12
I/O Replacement ............................................................................... 7-14
Peripherals Support Board and System Controller Board
Replacement ..................................................................................... 7-16
DMC Pressure and Flow Board ........................................................ 7-17
Pump Replacement ........................................................................... 7-19
Vacuum Pump Diaphragm and Valve Replacement .......................... 7-20
Diaphragm Replacement ................................................................ 7-20
Valve Replacement ......................................................................... 7-22
Capillary Cleaning and/or Replacement ............................................ 7-24
Capillary O-Ring Replacement ......................................................... 7-26
Power Supply Replacement ............................................................... 7-26
Step POL Board Replacement ........................................................... 7-28
DMC PMT Cooler and Reaction Chamber Replacement ................. 7-31
PMT Cooler Shroud Removal ....................................................... 7-31
PMT Cooler Board Replacement ................................................... 7-33
Reaction Chamber Cleaning and/or Removal ................................ 7-35
Photomultiplier Tube (PMT) Replacement ................................... 7-38
DMC Converter Replacement .......................................................... 7-41
Converter Assembly Board Replacement ........................................ 7-42
Converter Cartridge Heater Replacement ....................................... 7-43
DMC Ozonator ................................................................................ 7-45
Ozonator and Transformer Removal .............................................. 7-45
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