Thermo Scientific 48i Instruction Manual page 17

Chapter 8
Thermo Fisher Scientific
Replacement Parts List ........................................................................ 7-4
Cable List ............................................................................................ 7-6
External Device Connection Components .......................................... 7-6
Removing the Measurement Case Assembly and Lowering the Partition
Panel ................................................................................................... 7-8
Fuse Replacement ............................................................................... 7-9
Fan/Filter Replacement ..................................................................... 7-10
IR Source Replacement ..................................................................... 7-11
Filter Wheel Replacement ................................................................. 7-12
Chopper Motor Replacement............................................................ 7-14
Optical Bench Replacement .............................................................. 7-15
Optical Switch Replacement ............................................................. 7-16
Bench Heater Assembly Replacement ............................................... 7-17
Detector/Preamplifier Assembly Replacement ................................... 7-18
Preamp Board Calibration ................................................................ 7-20
Pump Replacement ........................................................................... 7-20
Pressure Transducer Replacement ..................................................... 7-21
Pressure Transducer Calibration........................................................ 7-22
Flow Transducer Replacement .......................................................... 7-24
Flow Transducer Calibration ............................................................ 7-25
Capillary Cleaning or Replacement ................................................... 7-26
Optional Zero/Span and Sample Solenoid Valve Replacement .......... 7-27
Analog Output Testing ..................................................................... 7-28
Analog Output Calibration ............................................................... 7-30
Analog Input Calibration .................................................................. 7-31
Calibrating the Input Channels to Zero Volts ................................ 7-31
Calibrating the Input Channels to Full-Scale ................................. 7-32
Ambient Temperature Calibration .................................................... 7-33
I/O Expansion Board (Optional) Replacement ................................. 7-34
Internal O Sensor (Optional) Replacement ...................................... 7-36
2
Digital Output Board Replacement .................................................. 7-36
Motherboard Replacement ................................................................ 7-37
Measurement Interface Board Replacement ...................................... 7-38
Front Panel Board Replacement ........................................................ 7-39
LCD Module Replacement ............................................................... 7-40
Service Locations ............................................................................... 7-41
System Description .......................................................................................... 8-1
Hardware ............................................................................................ 8-1
Optical Bench .................................................................................. 8-2
Band-pass Filter ............................................................................... 8-2
Bench Heater Board ......................................................................... 8-2
Chopper Motor ................................................................................ 8-2
Optical Pickup ................................................................................. 8-3
Gas Filter Wheel .............................................................................. 8-3
Infrared Source ................................................................................ 8-3
Contents
Model 48i Instruction Manual xi