Thermo Scientific 42i Instruction Manual page 19

Figures
Figures
Figure 1-1. Model 42i Trace Level Flow Schematic.......................................... 1-3
Figure 2-1. Remove the Packing Material ......................................................... 2-2
Figure 2-2. Model 42i Trace Level Rear Panel .................................................. 2-3
Figure 2-3. Atmospheric Dump Bypass Plumbing ............................................. 2-3
Figure 2-4. Twin-Head Vacuum Pump Installation............................................ 2-4
Figure 2-5. I/O Terminal Board Views ............................................................... 2-6
Figure 2-6. D/O Terminal Board Views.............................................................. 2-7
Figure 2-7. 25-Pin Terminal Board Views.......................................................... 2-8
Figure 3-1. Front Panel Display.......................................................................... 3-2
Figure 3-2. Front Panel Pushbuttons.................................................................. 3-2
Figure 3-3. Flowchart of Menu-Driven Software .............................................. 3-5
Figure 3-4. Pin-Out of Rear Panel Connector in Single Range Mode ............... 3-9
Figure 3-5. Pin-Out of Rear Panel Connector in Dual Range Mode ................ 3-10
Figure 3-6. Analog Output in Auto Range Mode............................................. 3-11
Figure 3-7. Pin-Out of Rear Connector in Auto Range Mode.......................... 3-12
Figure 4-1. GPT System...................................................................................... 4-3
Figure 5-1. Inspecting and Replacing the Capillaries ....................................... 5-3
Figure 5-2. Rebuilding the Pump........................................................................ 5-6
Figure 6-1. Board-Level Connection Diagram - Common Electronics............... 6-6
Figure 6-2. Board-Level Connection Diagram - Measurement System ............ 6-7
Figure 7-1. Properly Grounded Antistatic Wrist Strap ...................................... 7-4
Figure 7-2. Component Layout........................................................................... 7-7
Figure 7-3. Removing the Measurement Bench and Lowering the Partition
Panel ..................................................................................................................... 7-8
Figure 7-4. Replacing the Pump....................................................................... 7-10
Figure 7-5. Vacuum Pump - Head Plate and Motor View .............................. 7-13
Figure 7-6. Replacing the Fan .......................................................................... 7-14
Figure 7-7. PMT Cooler and Reaction Chamber .............................................. 7-16
Figure 7-8. Replacing the PMT ........................................................................ 7-17
Figure 7-9. Replacing the PMT HVPS .............................................................. 7-19
Figure 7-10. Cleaning or Removing the Reaction Chamber ............................ 7-21
Figure 7-11. NO -to-NO Molybdenum Converter Assembly ........................... 7-23
2
Figure 7-12. Replacing the Solenoid Valve ..................................................... 7-24
Figure 7-13. Replacing the Ozonator Assembly .............................................. 7-26
Figure 7-14. Replacing the Input Board........................................................... 7-28
Figure 7-15. Replacing the DC Power Supply.................................................. 7-30
Thermo Fisher Scientific Model 42i Trace Level Instruction Manual xv