iv
Table of Content
Fluid Infusion, Continuous .............................................................................. 3-30
Automatic Warming ................................................................................... 3-30
Pressure Control ....................................................................................... 3-30
Automatic Air Purging ............................................................................... 3-31
Bolus Infusion, Infuse a Fixed Volume ............................................................ 3-31
Recirculation Mode ......................................................................................... 3-31
Protection from Accidental Power Off ............................................................. 3-32
End of Procedure ............................................................................................ 3-32
Battery Operation............................................................................................ 3-33
Low Battery ............................................................................................... 3-33
Restarting the System .................................................................................... 3-34
Emergency Manual Operation ........................................................................ 3-34
Chapter 4: Theory Of Operation
Wiring Interconnect Diagram .......................................................................... 4-35
Theory of Operation ........................................................................................ 4-35
1. Power Module ..................................................................................... 4-35
• EMI Filter Board ......................................................................... 4-36
• Driver ‘A’ and ‘B’ Boards ............................................................. 4-36
• Heater Control Board .................................................................. 4-36
• Heatsink Assembly ..................................................................... 4-37
Operation ............................................................................................ 4-37
2. Daughter Board ................................................................................... 4-38
Operation ............................................................................................ 4-39
• Battery Control Circuitry.............................................................. 4-39
• DC/DC Power Supply ................................................................. 4-39
• Pump Motor Driver ..................................................................... 4-39
• Valve Motor Driver ...................................................................... 4-39
• Valve Position Sensors ............................................................... 4-39
• Pressure Transducer .................................................................. 4-39
• RS232 Port ................................................................................. 4-40
• Air Detector Electronics .............................................................. 4-40
• Air Detector ................................................................................ 4-40
• Sound Circuit .............................................................................. 4-40
• Door Status ................................................................................ 4-40
• Ambient Temperature Circuitry ................................................... 4-40
3. Computer Board .................................................................................. 4-41
• The CPU .................................................................................... 4-42
4. AC/DC Power Supply Board................................................................ 4-44
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