600 Series Technical Reference Manual April 2018 Rev N

Table of Contents 1 Introduction 1.1 General information...1-3 1.1.1 Main Machine Model Information...1-3 1.1.2 Main Machine SN Information... 1-3 1.1.3 Main Machine UDI Information... 1-3 1.1.4 Technical competence... 1-4 1.1.5 Trademarks...1-5 1.1.6 Important...1-5 1.2 What this manual includes... 1-7 1.2.1 Other equipment...1-7 1.3 User's Reference Manual... 1-8 1.4 Overview... 1-9 1.5 System overview... 1-11 1.6 Feature overview...1-15 1.7 Display control... 1-18 1.7.1 Touch points... 1-18 1.8 Anesthesia system display... 1-21 1.8.1 Digit field...1-22 1.8.2 Waveform fields... 1-22 1.8.3 Split screen field... 1-22 1.9 Display navigation... 1-24 1.9.1 Using menus...1-24 1.9.2 Using the ComWheel... 1-25 1.9.3 Using quick keys... 1-25 1.10 System information... 1-26 1.10.1 System classification... 1-26 1.10.2 Device standards IEC 60601-1:2005...1-26 1.10.3 Device standards IEC 60601-1:1988...1-26 1.10.4 Environmental requirements... 1-27 1.10.5 Physical specifications... 1-27

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Carestation 620/650/650c (A1/A2) 1.10.6 Communication with external devices... 1-30 1.11 Symbols used in the manual or on the equipment... 1-32 1.11.1 Symbols used on the equipment... 1-32 1.11.2 Symbols used on the user interface...1-35 1.12 Abbreviations...1-36

2 Theory of Operation 2.1 Electrical system... 2-3 2.2 Power subsystem... 2-5 2.2.1 AC-DC power supply... 2-5 2.2.2 Power Management Board... 2-6 2.2.3 Battery... 2-8 2.3 System communication... 2-9 2.3.1 Software Power On Self Test (POST)... 2-9 2.4 Display Unit... 2-11 2.4.1 Display Unit connections... 2-12 2.5 Anesthesia Control Board... 2-14 2.6 Frame Interface Board... 2-16 2.7 Lights and digital LED flow display boards... 2-19 2.7.1 Digital LED flow display board... 2-19 2.7.2 Top task light boards... 2-19 2.7.3 Bottom task light board... 2-20 2.7.4 ACGO LED light and microswitch... 2-20 2.7.5 Aux O2 + Air LED light and microswitch... 2-21 2.8 Sensor Interface Board... 2-22 2.9 Mixer solenoid valves... 2-24 2.10 Gas flow through the anesthesia machine... 2-25 2.10.1 Overview...2-25 2.10.2 System pneumatic circuits... 2-27 2.10.3 Suction regulators... 2-28 2.10.4 Flow control... 2-29 2.11 Flow through the breathing system... 2-32 2.11.1 Overview of flow paths... 2-32

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Table of Contents 2.11.2 Manual ventilation...2-32 2.11.3 Mechanical ventilation... 2-35 2.11.4 Fresh gas and O2 flush flow (with ACGO)...2-38 2.12 Ventilator... 2-40 2.12.1 Safety features... 2-40 2.13 Ventilator mechanical subsystems... 2-41 2.13.1 Drive gas filter and Gas Inlet Valve... 2-41 2.13.2 Pressure regulator... 2-42 2.13.3 Inspiratory flow control valve... 2-42 2.13.4 Drive gas flow sensor...2-43 2.13.5 Drive gas check valve... 2-43 2.13.6 Bellows pop-off valve... 2-44 2.13.7 Exhalation valve... 2-45 2.13.8 Mechanical Over Pressure Valve...2-46 2.13.9 Reservoir and bleed resistor... 2-47 2.13.10 Free breathing valve... 2-47 2.13.11 Breathing circuit flow sensors... 2-48

3 Checkout Procedures 3.1 Inspect the system... 3-3 3.1.1 Verify annunciators...3-3 3.2 System checkout overview... 3-4 3.3 System checkout procedure... 3-5 3.3.1 Full Test... 3-5 3.3.2 Test Results... 3-8 3.4 Individual tests...3-10 3.4.1 Ventilator Leak test...3-10 3.4.2 Vaporizer Leak test...3-10 3.4.3 Gas Controls test... 3-11 3.4.4 Circuit Leak test... 3-13 3.4.5 Calibration... 3-13 3.5 Low pressure leak test... 3-14 3.5.1 Low pressure leak test (with ACGO)... 3-14

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Carestation 620/650/650c (A1/A2) 3.5.2 Low pressure leak test (without ACGO)... 3-15 3.6 Bellows drop test... 3-18 3.7 Pipeline and cylinder tests... 3-19 3.7.1 Cross-Connect and high pressure leak test... 3-19 3.7.2 O2 supply alarm test... 3-20 3.8 Flow sensing test...3-21 3.9 Flow control test... 3-23 3.10 Flush flow test... 3-25 3.11 Vaporizer back pressure and interlock test... 3-26 3.12 Alarm tests...3-27 3.13 Auxiliary O2 flowmeter tests... 3-29 3.14 Integrated suction regulator tests (if equipped)... 3-30 3.14.1 Gauge accuracy... 3-30 3.14.2 Flow test... 3-30 3.14.3 Regulation test... 3-31 3.14.4 Vacuum bleed test... 3-31 3.14.5 Vacuum leak test... 3-31 3.15 Power failure test...3-32 3.16 Electrical safety test... 3-33

4 Installation and Service Menus 4.1 Installation and Service menu structure... 4-3 4.1.1 Menu structure... 4-3 4.2 Super User...4-4 4.2.1 Setting alarm defaults...4-4 4.3 Service menu...4-6 4.4 Installation menu... 4-7 4.4.1 Configuration menu... 4-7 4.4.2 Units... 4-8 4.4.3 Leakage Limits... 4-9 4.4.4 Factory Defaults... 4-9 4.5 Options... 4-10 4.5.1 Options Key-Code... 4-10

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Table of Contents 4.5.2 Installed Options...4-10 4.5.3 Options Upgrade...4-11 4.6 Copy Configuration... 4-12 4.6.1 Configurable Checklist... 4-12 4.7 Software/Hardware Information menu... 4-14 4.8 Service Logs... 4-15 4.9 Calibrations... 4-16 4.9.1 User Calibrations... 4-17 4.9.2 Manifold P Span... 4-18 4.9.3 Inspiratory Flow Valve... 4-19 4.9.4 Bleed Resistor... 4-20 4.9.5 Paw Span (or Paw and ACGO Span)... 4-21 4.9.6 Zero Gas Transducers... 4-23 4.9.7 Mixer Flow Sensor Zero... 4-24 4.9.8 Zero ACGO (or Zero AGSS or Zero ACGO and AGSS) ... 4-24 4.10 Display Diagnostics... 4-26

5 Calibration 5.1 Primary regulators... 5-3 5.1.1 Test setup for primary regulators... 5-3 5.1.2 Testing primary regulators... 5-4 5.1.3 Adjusting primary regulators... 5-6 5.2 Secondary regulators... 5-8 5.2.1 Testing/Adjusting secondary regulators or balance regulators...5-8 5.3 Flow control needle valves calibration... 5-10 5.3.1 O2 needle valve calibration (minimum flow)... 5-10 5.3.2 N2O needle valve calibration (minimum flow)... 5-12 5.3.3 Air needle valve calibration (minimum flow)... 5-17 5.4 Link system calibration... 5-20 5.5 Adjust drive gas regulator... 5-25 5.6 Ventilator calibrations... 5-26 5.6.1 Manifold P Span... 5-27

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Carestation 620/650/650c (A1/A2) 5.6.2 Inspiratory Flow Valve... 5-29 5.6.3 Bleed Resistor... 5-30 5.6.4 Paw Span... 5-31 5.6.5 Paw and ACGO Span... 5-32 5.6.6 Zero Gas Transducers... 5-34 5.6.7 Mixer Flow Sensor Zero... 5-34 5.6.8 Zero ACGO (or Zero AGSS or ACGO and AGSS)... 5-34

6 Installation and Functional Checks 6.1 Installation checklist... 6-3 6.2 Free breathing valve maintenance... 6-5 6.3 Pressure limit circuit test... 6-6 6.3.1 Test procedure... 6-6 6.4 MOPV pressure relief valve test... 6-8 6.4.1 Test setup... 6-8 6.4.2 Test procedure... 6-8 6.5 ACGO pressure relief valve test... 6-10 6.6 Scavenger positive relief functional check (for machine with Passive AGSS)... 6-11 6.7 Auxiliary O2 flowmeter tests... 6-12 6.7.1 Functional test... 6-12 6.7.2 Flow accuracy test... 6-12 6.8 Integrated suction regulator tests... 6-13 6.8.1 Gauge accuracy... 6-13 6.8.2 Flow test... 6-13 6.8.3 Regulation test... 6-14 6.8.4 Vacuum bleed test... 6-14 6.8.5 Vacuum leak test... 6-14 6.9 Battery capacity test... 6-15 6.9.1 Test procedure... 6-15 6.10 Installing a secondary monitor... 6-16

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7 Troubleshooting 7.1 Troubleshooting guidelines... 7-3 7.2 Troubleshooting high pressure and low pressure leaks... 7-4 7.3 Troubleshooting Failed state... 7-6 7.4 Troubleshooting Startup Screen (POST) messages... 7-7 7.5 Troubleshooting the display... 7-8 7.6 Breathing system leak test guide... 7-9 7.6.1 Check valves... 7-9 7.7 System Troubleshooting Flowcharts... 7-11 7.7.1 Display Troubleshooting...7-12 7.7.2 Inaccurate Volume Ventilation Troubleshooting... 7-13 7.7.3 No Ventilation Troubleshooting... 7-14 7.7.4 High Intrinsic PEEP Troubleshooting...7-15 7.7.5 ACB Troubleshooting... 7-16 7.7.6 ACB - FIB Communication Troubleshooting... 7-17 7.7.7 DU - ACB Communication Troubleshooting... 7-18 7.7.8 FIB troubleshooting... 7-19 7.7.9 LED related troubleshooting... 7-20 7.7.10 Airway Module Troubleshooting...7-21 7.7.11 System Malfunction Screen Troubleshooting... 7-22 7.8 System Malfunction and Gas Control Failure Flowchart Table ... 7-23 7.9 Technical alarms... 7-24 7.10 SIB Pneumatic Sense Tubing Leak Test... 7-44 7.11 Flow sensor accuracy test...7-45

8 Software Download 8.1 Overview... 8-2 8.1.1 Main Menu and System Information... 8-2 8.2 Software Download... 8-3 8.2.1 Download process... 8-4 8.2.2 Download complete... 8-4

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Carestation 620/650/650c (A1/A2) 8.3 Software compatibility check...8-5

9 Repair Procedures 9.1 Safety information... 9-5 9.2 Circuit board replacement precautions... 9-7 9.3 KEY/BID label (Key Code)... 9-9 9.4 How to bleed gas pressure from the machine... 9-10 9.5 How to remove the rear panels... 9-11 9.5.1 How to remove the cylinder cover... 9-11 9.5.2 How to remove the rear upper panel... 9-11 9.5.3 How to remove the rear lower panel... 9-12 9.6 How to remove the tabletop... 9-13 9.7 How to remove the top shelf... 9-14 9.8 Servicing the power components... 9-15 9.8.1 Replacing the PMB...9-15 9.8.2 Replacing the universal AC-DC power supply board . . . 9-16 9.8.3 Replacing the batteries... 9-18 9.8.4 Replacing the fan... 9-19 9.8.5 Replacing the fuse... 9-20 9.9 Replacing the ACB... 9-22 9.10 Replacing the FIB... 9-24 9.11 Replacing the SIB... 9-25 9.11.1 Replacing the SIB filters and rubber ports... 9-26 9.12 Servicing the Vent Engine... 9-28 9.12.1 Removing the Vent Engine... 9-28 9.12.2 Servicing the Vent Engine components... 9-29 9.12.3 Replacing Gas Inlet Valve components... 9-32 9.13 Servicing the pipeline inlet manifold components... 9-33 9.13.1 Replacing pipeline inlet filter... 9-33 9.13.2 Replacing pipeline inlet check valve... 9-33 9.13.3 Replacing the pipeline inlet manifold... 9-34 9.13.4 Replacing the pipeline gas-supply pressure transducers... 9-35 9.14 Servicing the cylinder supply modules... 9-37

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Table of Contents 9.14.1 Replacing the primary regulator module... 9-37 9.14.2 Replacing the cylinder inlet filter... 9-38 9.14.3 Replacing the cylinder check valve... 9-38 9.15 Replacing the O2 flush valve... 9-39 9.16 Servicing the breathing system components... 9-40 9.16.1 Replacing the inspiratory/expiratory ports... 9-42 9.16.2 Replacing the Bag/Vent switch and the CO2 bypass . . 9-43 9.16.3 Replacing the APL valve... 9-44 9.16.4 Replacing the flow sensors... 9-45 9.16.5 Replacing the inspiratory/expiratory check valve... 9-46 9.16.6 Replacing the canister holder... 9-47 9.16.7 Servicing the bellows assembly... 9-48 9.17 Replacing the bag arm... 9-52 9.18 Servicing the gas control components... 9-53 9.18.1 Replacing the secondary regulator manifold or balance regulator manifold... 9-53 9.18.2 Replacing the O2 or N2O needle valve (on machines with N2O)...9-54 9.18.3 Replacing an Air needle valve on all machines or an O2 needle valve on machines without N2O... 9-56 9.18.4 Replacing the Link - 25 assembly... 9-57 9.19 Servicing vaporizer manifold parts... 9-58 9.19.1 Repairing manifold port valve... 9-58 9.19.2 Checkout procedure for manifold port valve... 9-59 9.19.3 Replacing the vaporizer manifold...9-60 9.20 Replacing the auxiliary O2 flowmeter... 9-62 9.21 Replacing the suction regulator... 9-63 9.22 Replacing the On/Standby switch... 9-65 9.23 Servicing the ACGO module... 9-67 9.23.1 Removal... 9-67 9.23.2 Replacement... 9-69 9.23.3 Test procedure... 9-70 9.24 Servicing the AGSS...9-71 9.24.1 Servicing the scavenger positive relief valve (for machines with Passive AGSS)... 9-71

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Carestation 620/650/650c (A1/A2) 9.24.2 Servicing the Active AGSS...9-71 9.25 Servicing the task lights... 9-73 9.25.1 Replacing the left top task light... 9-73 9.25.2 Replacing the central vaporizer task light... 9-74 9.25.3 Servicing the right top task light assembly... 9-74 9.25.4 Replacing the bottom task light... 9-75 9.26 Replacing the casters... 9-77 9.26.1 Replacing the casters (without central brake)... 9-77 9.26.2 Replacing the front casters (with old central brake linkage system)... 9-79 9.26.3 Replacing the front casters (with new central brake linkage system)... 9-84 9.27 Servicing the display unit... 9-88 9.27.1 Disassembling the DU... 9-89 9.27.2 Replacing the Carrier board and Com Express board assembly... 9-90 9.27.3 Replacing the front assembly (including LCD/Touch Bezel assembly)... 9-91 9.27.4 Replacing the CPU “coin” battery... 9-93 9.27.5 Replacing the encoder... 9-93 9.27.6 Replacing the speaker... 9-94 9.28 Replacing the display unit cables... 9-95 9.29 Replacing the display arm...9-96 9.30 Display arm adjustments...9-98 9.31 Replacing the transformer...9-101 9.31.1 Replacing the transformer (for machines with drawers) ... 9-101 9.31.2 Replacing the transformer (for machines without drawers)...9-103 9.32 Replacing the Tec 7 filler cap or filler cap O-ring... 9-106

10 Illustrated Parts 10.1 Service tools... 10-4 10.1.1 Software tools...10-4 10.1.2 Test devices... 10-4

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Table of Contents 10.1.3 Manifold pressure test adapter... 10-5 10.1.4 Flow sensing test adapter... 10-5 10.1.5 Lubricants and Adhesives... 10-6 10.1.6 Touch-up Paint... 10-6 10.1.7 Test tools... 10-6 10.2 External components - front view... 10-8 10.3 External components - front view references... 10-10 10.4 External components - rear view...10-11 10.5 Tabletop components... 10-12 10.6 Middle pan components... 10-13 10.7 Vent Engine assembly...10-14 10.7.1 Gas Inlet Valve... 10-15 10.7.2 Vent Engine subassemblies...10-16 10.7.3 Vent Engine manifold... 10-17 10.7.4 Drive gas check valve... 10-18 10.8 Top shelf components... 10-19 10.9 AC power cords...10-21 10.10 AC Inlet/Outlet components... 10-22 10.11 Drawer... 10-24 10.12 Display Unit... 10-25 10.13 Light boards...10-27 10.14 AUX O2 assembly... 10-28 10.15 AUX O2 + Air...10-29 10.16 O2 flush assembly...10-30 10.17 ACGO assembly... 10-31 10.18 Vaporizer manifold...10-32 10.19 Rear upper panel and enclosure components... 10-33 10.20 Pipeline inlet fittings... 10-35 10.21 Cylinder gas supplies... 10-37 10.21.1 Cylinder inlet fittings... 10-38 10.22 Breathing system...10-39 10.22.1 Bellows assembly...10-40 10.22.2 Breathing system upper assembly...10-41 10.22.3 Breathing system lower assembly... 10-42

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Carestation 620/650/650c (A1/A2) 10.22.4 Bag/Vent switch... 10-43 10.22.5 Bypass... 10-44 10.22.6 Inspiratory/Expiratory ports assembly... 10-45 10.22.7 O2 cell assembly... 10-46 10.22.8 Breathing system lower housing... 10-47 10.22.9 APL valve assembly...10-48 10.22.10 Absorber canister... 10-49 10.22.11 Canister lifter... 10-50 10.23 Bag arm and breathing system protector... 10-51 10.24 Passive AGSS...10-52 10.25 Active AGSS*... 10-54 10.26 Integrated suction regulator - major components...10-56 10.27 Suction control module... 10-57 10.28 Venturi assembly... 10-58 10.29 Display arm... 10-59 10.30 Flip shelf... 10-60 10.31 Pendant... 10-61 10.32 Cables and harnesses... 10-62 10.33 Cable management arms... 10-63 10.34 Tubing for use with Legris fittings... 10-64 10.35 Tubing - Gas supplies... 10-66 10.36 Tubing - Mixed gas... 10-68 10.37 Tubing - Suction control... 10-70 10.38 Legris quick-release fittings... 10-71 10.39 Vaporizer service parts... 10-72 10.39.1 G-Flange seal replacement kits... 10-72 10.39.2 Tec 6 Plus Fixed Filler service parts kits... 10-72 10.39.3 Tec 7 service parts... 10-73

11 Schematics and Diagrams 11.1 System pneumatic circuits... 11-2 11.2 Colorful system pneumatic circuits... 11-4 11.3 Electrical system block diagram... 11-5

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Table of Contents 11.4 Anesthesia Control Board block diagram... 11-6 11.5 Power Management Board block diagram... 11-7 11.6 Sensor Interface Board block diagram... 11-8 11.7 Frame Interface Board block diagram... 11-9 11.8 Cabling block diagram... 11-10 11.9 AC inlet module schematics...11-11

12 Service Application 12.1 Service Application (PC based)... 12-3 12.1.1 PC requirements... 12-3 12.2 Startup screen - System Status... 12-4 12.2.1 Schematics... 12-4 12.3 System schematics... 12-5 12.3.1 Power Schematic... 12-5 12.3.2 Gas Delivery Schematic...12-5 12.3.3 Vent Schematic... 12-6 12.4 Menu items... 12-8 12.5 File menu...12-9 12.5.1 File - Preferences... 12-9 12.6 Tools menu... 12-10 12.6.1 Communication Status... 12-10 12.6.2 System Calibrations... 12-10 12.6.3 Transfer Logs... 12-11 12.6.4 Planned Maintenance...12-11 12.7 Power Diagnostics menu... 12-13 12.7.1 Power Diagnostics - Power Management Board...12-13 12.7.2 Power Diagnostics - Anesthesia Control Board Power ... 12-14 12.7.3 Power Diagnostics - Frame Interface Board Power . . 12-14 12.7.4 Power Diagnostics - Sensor Interface Board Power . . 12-14 12.7.5 Power Diagnostics - Display Unit Power... 12-14 12.8 Gas Delivery Subsystem menu...12-16 12.8.1 Gas Delivery Subsystem - Gas Supply Status... 12-16

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Carestation 620/650/650c (A1/A2) 12.8.2 Gas Delivery Subsystem - Mixer Output/Gas Delivery Status...12-16 12.9 Vent Subsystem menu... 12-18 12.9.1 Vent Subsystem - Vent Status... 12-18 12.9.2 Vent Subsystem - Vent Flow and Pressure... 12-18 12.10 Gas Monitor menu...12-20 12.10.1 Gas Monitor Service...12-20 12.11 Window menu... 12-21 12.12 Help menu - About... 12-22

13 Maintenance Procedures 13.1 Planned Maintenance... 13-3 13.1.1 Parts replacement... 13-3 13.1.2 Planned Maintenance Checklist...13-4 13.2 Planned maintenance checkout procedure... 13-5 13.2.1 Visual inspection procedures... 13-5 13.2.2 Breathing system inspection... 13-7 13.2.3 Ventilator...13-10 13.2.4 Verify annunciators... 13-11 13.2.5 Power failure test... 13-11 13.2.6 Pipeline and cylinder tests... 13-11 13.2.7 Flow sensing test... 13-13 13.2.8 Flow control test... 13-14 13.2.9 Display diagnostics... 13-16 13.2.10 Ventilator tests... 13-17 13.2.11 Auxiliary O2 flowmeter tests...13-19 13.2.12 Integrated suction regulator tests (if equipped)... 13-20 13.2.13 ACGO pressure relief valve test... 13-22 13.2.14 AGSS inspection and testing (only equipped with passive AGSS)... 13-22 13.2.15 Flush flow test... 13-23 13.2.16 Vaporizer back pressure and interlock test... 13-24 13.2.17 Calibrating the airway module... 13-24 13.2.18 Alarm tests... 13-25

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Table of Contents 13.2.19 System checkout... 13-27 13.2.20 Electrical safety checks... 13-27 13.2.21 Final machine checks...13-28

Index

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Carestation 620/650/650c (A1/A2)

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1 Introduction

Introduction

In this section 1.1 General information... 1-3 1.1.1 Main Machine Model Information... 1-3 1.1.2 Main Machine SN Information... 1-3 1.1.3 Main Machine UDI Information... 1-3 1.1.4 Technical competence... 1-4 1.1.5 Trademarks... 1-5 1.1.6 Important... 1-5 1.2 What this manual includes... 1-7 1.2.1 Other equipment... 1-7 1.3 User's Reference Manual... 1-8 1.4 Overview... 1-9 1.5 System overview... 1-11 1.6 Feature overview... 1-15 1.7 Display control... 1-18 1.7.1 Touch points...1-18 1.8 Anesthesia system display... 1-21 1.8.1 Digit field... 1-22 1.8.2 Waveform fields... 1-22 1.8.3 Split screen field... 1-22 1.9 Display navigation...1-24

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Carestation 620/650/650c (A1/A2) 1.9.1 Using menus... 1-24 1.9.2 Using the ComWheel...1-25 1.9.3 Using quick keys... 1-25 1.10 System information... 1-26 1.10.1 System classification... 1-26 1.10.2 Device standards IEC 60601-1:2005... 1-26 1.10.3 Device standards IEC 60601-1:1988... 1-26 1.10.4 Environmental requirements... 1-27 1.10.5 Physical specifications...1-27 1.10.6 Communication with external devices...1-30 1.11 Symbols used in the manual or on the equipment... 1-32 1.11.1 Symbols used on the equipment... 1-32 1.11.2 Symbols used on the user interface... 1-35 1.12 Abbreviations... 1-36

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1 Introduction

1.1 General information 1.1.1 Main Machine Model Information The Carestation 620/650/650c (A1/A2) series products have two models. Carestation 620/650/650c (A1) assembled in USA is sold globally; Carestation 620/650/650c (A1) made in China is exported globally (except China). Carestation 620/650/650c (A2) made in China is sold only in China. CE mark is applicable for A1 model only, no CE mark for A2 model product.

1.1.2 Main Machine SN Information The Carestation 620/650/650c (A1/A2) series products have unit serial numbers with coded logic, which indicates a product group code, the year the machine was manufactured, the week the machine was manufactured, the sequential unit number for identification, the manufacture site and the product type. XXX YY FW XXXX S M The XXX represents the product code; SM6 = Carestation 620, SM7 = Carestation 650, SM8 = Carestation 650c. YY represents a number indicating the year the product was manufactured; 14 = 2014, 15 = 2015, and so on. FW represents the week the product was manufactured; 01 = FW01, 02 = FW02, and so on. XXXX represents the serial number of the machine. The S site information (W or M) represents the location the machine was manufactured. W = Wuxi, M = Madison The M machine information (P or A) represents the production type. P is used for the prototype machines, A is for the mass production machines.

1.1.3 Main Machine UDI Information Each machine has a UDI (Unique Device Identifier) label. The UDI label is located on the left frame, together with the machine SN and REF labels.

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