HCEN12630 Revision 07.2015
Program version 1.xx
AK 98™ Dialysis Machine - Technical description 45
3 Technical description
3.1
Introduction.................................................................................................................. 47
3.1.1
General information ................................................................................................. 47
3.1.2
Fluid unit .................................................................................................................. 47
3.1.3
Blood unit................................................................................................................. 47
3.1.4
Power supply ........................................................................................................... 48
3.1.5
Operator's panel ...................................................................................................... 48
3.2
Product description..................................................................................................... 50
3.2.1
Blood unit - exterior parts ........................................................................................ 50
3.2.2
Blood unit - interior parts ......................................................................................... 52
3.2.3
Fluid unit - exterior front parts.................................................................................. 54
3.2.4
Fluid unit - exterior rear parts .................................................................................. 56
3.2.5
Fluid unit - interior parts 1........................................................................................ 58
3.2.6
Fluid unit - interior parts 2........................................................................................ 60
3.2.7
Fluid unit - interior parts 3........................................................................................ 62
3.2.8
Fluid unit - valves..................................................................................................... 64
3.3
Fluid unit description .................................................................................................. 65
3.3.1
Subsystems ............................................................................................................. 65
3.3.2
Fluid unit - flow path ................................................................................................ 66
3.3.3
Fluid unit – flow path description ............................................................................. 67
3.3.3.1
The water intake and heating system.................................................................. 67
3.3.3.2
The Temperature Control and Protective System................................................ 68
3.3.3.2.1
Description....................................................................................................... 68
3.3.3.3
Disinfectant inlet .................................................................................................. 70
3.3.3.4
Conductivity control ............................................................................................. 71
3.3.3.4.1
Mixing .............................................................................................................. 71
3.3.3.4.2
Conductivity Control System, bicarbonate....................................................... 73
3.3.3.4.3
Composition supervision ................................................................................. 73
3.3.3.5
Degassing/flow pump system.............................................................................. 74
3.3.3.5.1
Degassing circuit ............................................................................................. 74
3.3.3.5.2
Preset of the degassing pressure.................................................................... 75
3.3.3.5.3
Degassing Pressure Control System............................................................... 76
3.3.3.5.4
Adjustable dialysis fluid flow ............................................................................ 77
3.3.3.5.5
Conductivity guard........................................................................................... 77
3.3.3.6
Fluid output – UF control system......................................................................... 78
3.3.3.6.1
Fluid output...................................................................................................... 78
3.3.3.6.2
TMP calculation ............................................................................................... 78
3.3.3.6.3
Flow Calculation - UF Protective system......................................................... 79
3.3.3.6.4
Safety Guard ................................................................................................... 79
3.3.3.6.5
Deaerating ....................................................................................................... 79
3.3.3.6.6
UF control ........................................................................................................ 80
3.3.3.6.7
The UF Control System ................................................................................... 81
3.3.3.6.8
UF control taration ........................................................................................... 81
3.3.3.6.9
The UF Supervision System............................................................................ 83
3.3.3.6.10
UF protective taration ...................................................................................... 84
3.3.3.6.11
Diascan
®
- Conductivity cell C (option) ............................................................ 85
3.3.3.6.12
Blood leak detection ........................................................................................ 86