Hoffrichter CARAT I, Service Manual

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Table of ConTenTs
1 Symbols in this Service Manual .......................................................................................4
2 Safety Instructions...........................................................................................................4
3 Preparing the Device when Changing Patient .................................................................5
3.1 Reprocessing Procedure 1................................................................................................5
3.2 Reprocessing Procedure 2................................................................................................5
3.3 Reprocessing Procedure 3................................................................................................6
4 Block Diagrams ...............................................................................................................6
4.1 Block Diagram – Pneumatic (CARAT I) ..............................................................................6
4.2 Block Diagram – Pneumatic (CARAT II) .............................................................................7
4.3 Block Diagram – Complete Machine .................................................................................7
4.4 Block Diagram – Controller Board .....................................................................................8
4.5 Block Diagram – Power Management Circuit Board ..........................................................8
5 Assemblies ......................................................................................................................9
5.1 Control Circuit Board ........................................................................................................9
5.1.1 Operating Section .............................................................................................................9
5.1.2 Control Section ..............................................................................................................10
5.1.3 RS232 Circuit Board .......................................................................................................10
5.2 Power Management Circuit Board ..................................................................................11
5.3 Internal Battery ...............................................................................................................11
5.4 Fan Box .........................................................................................................................11
5.5 Valve Manifold ................................................................................................................11
5.5.1 Valve Base .....................................................................................................................11
5.5.2 Sensor Manifold .............................................................................................................11
5.5.3 Flow Sensors .................................................................................................................11
5.5.4 Tube Connection ............................................................................................................12
5.6 Oxygen Manifold.............................................................................................................12
5.7 Filter Cartridge ................................................................................................................12
5.8 Power Supply .................................................................................................................12
5.9 Handle Mechanism .........................................................................................................12
6 Tools, Metering Devices ................................................................................................13
7 Opening the Machine ....................................................................................................13
8 Maintenance Hardware ................................................................................................14
8.1 Cleaning and Disinfection ...............................................................................................14
8.2 Filter Cartridge ................................................................................................................14
8.3 Check all Tubes ..............................................................................................................14
8.4 Check the Cable and Connections ..................................................................................14
8.5 Check Attachment of Printed Circuit Boards ...................................................................15
8.6 Check Air Outlet .............................................................................................................15
8.7 Check the Display and Contrast ......................................................................................15
8.8 Button Functional Check ................................................................................................15
8.9 Calibration ......................................................................................................................15
8.10 Carry out Battery Test .....................................................................................................18
8.11 Closing the Machine .......................................................................................................18
8.12 Maintenance and Replacement Kits ...............................................................................19
8.13 Check the Alarms ...........................................................................................................20
8.14 Data Backup ..................................................................................................................20
8.15 Standard Values the Factory Setting ...............................................................................20