
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