Datex-Ohmeda Aestiva 7900 SmartVent Manuals

Manuals and User Guides for Datex-Ohmeda Aestiva 7900 SmartVent. We have 2 Datex-Ohmeda Aestiva 7900 SmartVent manuals available for free PDF download: Technical Reference Manual, Service Manual

Datex-Ohmeda Aestiva 7900 SmartVent Technical Reference Manual

Datex-Ohmeda Aestiva 7900 SmartVent Technical Reference Manual (204 pages)

Anesthesia Ventilator

Brand: Datex-Ohmeda | Category: Medical Equipment | Size: 2.85 MB

Table of Contents

Table of Contents

5
- Important
  4
- Technical Competence
  4
  - Table of Contents
    5
- 1 Introduction
  11
  - What this Manual Includes
    12
    
    Software Versions
    12
  - Standard Service Procedures
    13
    
    Operation Manuals
    13
    
    Service Manuals
    13
    
    Ventilator Tests
    13
  - Symbols Used in the Manual or on the Equipment
    14
2 Theory of Operation

17
- Aestiva 7900 Ventilator Features
  18
  - Safety Features
    19
- General Description
  18
- Aestiva 7900 Ventilator Components
  19
  - Ventilator Control Electronics
    20
  - Control Panel and Display
    22
  - Sensor Interface Board (SIB)
    23
  - Pneumatic Engine
    23
- Electrical
  24
  - Electrical (Original)
    24
  - Electrical (Integrated)
    25
  - Power Supply (Original)
    26
  - Power Supply (Integrated CPU)
    27
  - Sealed Lead Acid Battery
    28
  - CPU Assembly
    29
  - Sensor Interface Board (SIB)
    36
- Mechanical Subsystems
  39
  - Supply Gas
    39
  - Gas Inlet Valve (GIV)
    40
  - Flow Control Valve
    40
  - Drive Gas Check Valve (DGCV)
    41
  - Bellows Pressure Relief Valve
    41
  - Exhalation Valve
    42
  - Mechanical Overpressure Valve
    42
  - Bleed Resistor
    42
  - Free Breathing Valve
    43
  - Breathing Circuit Flow Sensors
    43
- 3 Post-Service Checkout
  45
  - Test the Aestiva 7900 Ventilator
    46
  - Test the Aestiva Anesthesia Machine
    46
4A Tests and Calibration - Software Revision 4.X

47
- 4 Tests and Calibration - Software Revision
  47
  - 4A.1 Self Tests
    49
  - 4A.2 Service Mode Confirmation Menu
    50
  - 4A.3 Main Menu - Service Mode
    51
    
    4A.3.1 Alarm Log
    52
    
    4A.3.2 Error Log
    53
    
    4A.3.3 System Configuration
    54
    
    4A.3.4 User Select Defaults
    58
    
    4A.3.5 Test CPU and Memory
    60
    
    4A.3.6 Test EEPROM
    61
    
    4A.3.7 Test GIV
    62
    
    4A.3.8 Test Flow Valve
    63
    
    4A.3.9 Test Drive Pressure Limit Switch
    64
    
    4A.3.10 Test 5V Fail Alarm
    65
    
    4A.3.11 Test Serial Ports
    66
    
    4A.3.12 Breathing System Leak Test
    67
    
    4A.3.13 Display A/D Channels
    68
    
    4A.3.14 Display Discrete I/O Signals
    70
    
    4A.3.15 Display Battery Status
    71
    
    4A.3.16 Test Panel Switches
    72
    
    4A.3.17 Flow Valve Test Tool
    73
    
    4A.3.18 Adjust Drive Gas Regulator
    74
    
    4A.3.19 O2 Calibrations
    75
    
    4A.3.20 Calibrate Flow Sensors
    76
    
    4A.3.21 Pressure Sensitivity
    77
    
    4A.3.22 Calibrate Flow Valve
    78
    
    4A.3.23 Bleed Resistor Calibration
    79
    
    4A.3.24 Service Calibrations Required
    80
4B Tests and Calibration - Software Revisions 1.X and 3.X

83
- 4B.1 Self Tests
  85
- 4B.2 Service Mode Confirmation Menu
  86
- 4B.3 Main Menu - Service Calibration Mode
  88
- 4B.4 Diagnostic Tests
  89
  - 4B.4.1 Test CPU
    89
  - 4B.4.2 Test External RAM
    89
  - 4B.4.3 Test Display RAM
    90
  - 4B.4.4 Test Flash ROM
    90
  - 4B.4.5 Test EEPROM
    91
  - 4B.4.7 Test Serial Ports
    92
  - 4B.4.8 Test Flow Valve
    93
  - 4B.4.9 Test GIV (Gas Inlet Valve)
    94
  - 4B.4.10 Test DPL (Drive Pressure Limit) Switch
    95
  - 4B.4.11 Test 5V Fail Alarm
    96
- 4B.5 Diagnostic Tools
  97
  - 4B.5.1 Display A/D Channels
    97
  - 4B.5.2 Display I/O Signals
    99
  - 4B.5.3 Battery Charge Status
    100
  - 4B.5.4 System Error Log
    101
  - 4B.5.5 Alarm Log
    101
- 4B.6 Flow Valve Test Tool
  102
- 4B.7 Test Breathing System for Leak
  103
- 4B.8 Adjust Drive Gas Regulator
  104
- 4B.9 Calibrations
  105
  - 4B.9.1 Calibrate O2 Sensor
    105
  - 4B.9.2 Calibrate Flow Sensors
    106
  - 4B.9.3 Pressure Sensitivity Calibration
    107
  - 4B.9.4 Calibrate Flow Valve
    108
  - 4B.9.5 Calibrate Bleed Resistor
    109
- 4B.10 Schedule Service Calibration - Software 3
  110
- 4B.11 Sensor(S) Cal Due - Software 1
  111
- 4B.12 User Settings
  112
  - 4B.12.1 Select Altitude
    112
  - 4B.12.2 Select Drive Gas
    112
  - 4B.12.3 Adjust Brightness
    113
  - 4B.12.4 Select Heliox Mode
    113
  - 4B.12.5 VE Alarm Limits
    114
  - 4B.12.6 User Select Defaults
    114
5 Troubleshooting

117
- 5 Troubleshooting
  118
  - Troubleshooting Instructions
    118
  - System Error Log
    119
    
    Error Messages for Software Revision 4.X
    119
    
    Error Codes for Software Revisions 1.X and 3.X
    119
  - Alarm Messages
    123
  - Mechanical/Electrical Troubleshooting Guide
    140
  - Troubleshooting Flowcharts
    142
    
    Ventilator Assessment Process
    142
    
    No Display Troubleshooting
    143
    
    Inaccurate Volume Ventilation Troubleshooting
    144
    
    No Ventilation Troubleshooting
    145
    
    High Intrinsic PEEP Troubleshooting
    146
  - Power Supply Test Points
    147
    
    Power Supply Board (Original CPU)
    147
    
    Original CPU
    148
    
    Power Supply (Integrated CPU)
    149
6 Maintenance

151
- Supply Gas Inlet Filter
  153
- Free Breathing Valve Maintenance
  154
- MOPV Differential Relief Valve Test
  155
- MOPV Pressure Relief Valve Test
  156
7 Repair Procedures

159
- Control Panel Assembly
  160
- Keyboard and el Display
  161
- Encoder Switch
  162
- Alarm Speaker
  163
- Access to Electrical Enclosure Components
  164
  - CPU Board
    165
  - CPU Board
    166
  - Firmware Replacement Procedure
    167
  - Power Supply Board (for Original CPU)
    168
  - Power Supply (for Integrated CPU)
    169
  - Toroid (Original CPU Only)
    170
  - Battery
    171
- Vent Engine
  172
- Non-Relieving Regulator
  174
8 Illustrated Parts

183
- Service Tools
  184
- Special Instructions
  184
- Ventilator Harnesses
  185
- Electrical Enclosure Parts (Original CPU)
  186
- Electrical Enclosure Parts (Integrated CPU)
  188
- Display Module
  190
  - Rear Housing Parts
    190
  - Front Housing Parts
    191
- Aestiva 7900 Vent Engine
  192
  - Gas Inlet Valve
    193
  - Inlet Filter
    195
  - Free Breathing Valve
    196
  - Manifold
    197
  - Tube Assembly
    198
  - Twin Tube Lifter
    199
- Vent Engine Mounting Bracket
  200
- Sensor Interface Board (SIB)
  201

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Datex-Ohmeda Aestiva 7900 SmartVent Service Manual

Datex-Ohmeda Aestiva 7900 SmartVent Service Manual (181 pages)

Brand: Datex-Ohmeda | Category: Fan | Size: 1.96 MB

Table of Contents

Table of Contents

5
List of Illustrations

11
- 1/ Introduction
  14
- What this Manual Includes
  14
- Symbols
  15
- 7900 Ventilator Configuration
  17
- Operation and Service Manuals
  17
- Software Versions
  17
- Standard Service Procedures
  17
- Ventilator Tests
  17
- 2/Theory of Operation
  19
- General
  19
- 7900 Ventilator Features
  20
- Mechanical
  21
- Safety Features
  21
- Electrical
  27
- Power Supply
  28
- Power Supply Assembly
  28
- Synchrononus Step-Down Regulator
  30
- Communication Interface (RS232C)
  32
- External Interface
  32
- External Interface Connector
  32
- Input
  32
- Output
  32
- Sealed Lead Acid Battery
  32
- Functional Specifications
  33
- Microcontroller Assembly
  33
- Flash EPROM
  35
- Non-Volatile Memory
  35
- Program Memory
  35
- Safety Relevant Computing
  35
- System RAM
  35
- 68040 Software Watchdog Timer
  36
- Error Response Sequence
  36
- Operating Mode Watchdog
  36
- Watchdog Systems
  36
- Analog to Digital Converter System
  37
- DATA Acquisition
  37
- A/D Converter
  38
- Multiplexer and Buffer Amplifier
  38
- Flow Valve Control
  39
- Voltage Reference
  39
- EL Display Controller
  40
- Front Panel Display Interface
  40
- Gas Inlet Valve Drive Circuit
  40
- LED Driver Outputs
  40
- Membrane Switch Inputs
  40
- Rotary Encoder Input
  40
- Video Display Memory
  40
- Audio Alarm
  41
- Front Panel Assembly
  41
- Manifold Pressures
  41
- Mechanical Ventilation Switch
  41
- Inspiratory and Expiratory Flow Measurement
  42
- Patient Airway Pressure Measurement
  42
- Sensor Interface Board (SIB)
  42
- O2 Concentration Measurement
  43
- Switch Connections
  43
- 3/Post Service Checkout
  45
- Test All Options and Accessories
  45
- Test the Anesthesia System
  45
- Test the Ventilator
  45
- 4/Tests and Troubleshooting
  47
- Overview
  47
- Testing Requirements
  47
- Service Mode Menu
  49
- Diagnostic Tests
  50
- Test CPU
  50
- Test Display RAM
  51
- Test External RAM
  51
- Test Flash ROM
  52
- Test EEPROM
  53
- Test Panel Switches
  54
- Test Serial Ports
  56
- Test Flow Valve
  57
- Gas Inlet Valve FAIL Instructions
  58
- Test Gas Inlet Valve (GIV)
  58
- Test Pressure Limit Switch
  59
- Pressure Limit Switch FAIL Instructions
  60
- Diagnostic Tools
  61
- Display A/D Channels
  61
- Display I/O Signals
  62
- Display Battery Charge Status
  63
- System Error Log
  64
- System Error Log Codes
  65
- Verify Flow
  69
- Calibrations
  70
- Calibrate Flow Sensors
  71
- Calibrate Pressure Sensitivity
  74
- Calibrate Flow Valve
  76
- Calibrate Bleed Resistor
  77
- Sensor(S) Cal Due
  80
- Select Altitude
  81
- Select Drive Gas
  81
- User Settings
  81
- Adjust Brightness
  82
- Select Heliox Mode
  82
- Exit Service Mode
  83
- Troubleshooting Guides
  84
- Troubleshooting Mechanical/Electrical
  84
- Troubleshooting by Alarm Messages
  86
- Maintenance
  91
- Maintenance Schedule
  91
- Two Year Maintenance
  91
- Yearly Maintenance Checks
  91
- Exhalation Valve Maintenance
  92
- Maintenance Procedures
  92
- Supply Gas Inlet Filter
  92
- Free Breathing Valve Maintenance
  93
- 6/ Repair Procdures
  95
- Assemblies -- Tools for Removal and Installation
  95
- General
  95
- Removing the 7900 Ventilator from the Integrated Machine
  96
- Removing the 7900 Ventilator from the Ohmeda Excel/Modulus SE Gas Machine
  96
- Removing the 7900 Ventilator from the Non-Integrated Machine
  98
- Setting up the Service Shelf
  101
- Removing the Top Cover
  103
- Printed Circuit Board and Power Module Removal
  105
- Removing Power Supply Circuit Board
  105
- Removing the Power Supply Circuit Board and the Microcontroller Circuit
  105
- Removing Microcontroller Circuit Board
  108
- Firmware Replacement Procedure
  110
- Ohmeda Software Upgrade Tool
  111
- Software Upload Procedure
  111
- To Install Ohmeda Software Upgrade Tool
  111
- Microcontroller Board
  112
- To Install 7900 Software Field Upgrade
  112
- To Perform Software Upgrade
  112
- Removing the Front Panel
  113
- Replacing the Display Board
  113
- Replacing the Encoder Switch
  115
- Removing the Battery
  116
- Testing after Maintenance
  117
- Removing the Power Module
  118
- Replacing the Isolation Transformer
  118
- Prepare Power Module for Removal
  119
- Isolation Transformer Removal
  120
- Alarm Speaker Removal
  121
- Power Cord Inlet Removal
  122
- Pneumatic Subassembly Removal
  123
- Removing the Non-Relieving Regulator
  123
- Removing the Flow Control Valve
  124
- Removing the GIV Assembly
  126
- Removing the Solenoid and Gas Inlet Valve Assembly
  126
- Removing the Solenoid Switch
  126
- Gas Inlet Valve Repair
  127
- Removing the Mechanical Over-Pressure Bleed off Valve (MOBO)
  129
- MOBO Installation and Low Pressure Operation Check
  130
- MOBO Removal (See Figure 6-30)
  130
- Mechanically Cycle MOBO Weights (See Figure 6-30)
  132
- Removing the Drive Gas Check Valve Assembly
  133
- Removing the Pressure Sensing Switch Assembly
  134
- SIB Removal from Excel/Modulus SE
  135
- SIB (Sensor Interface Board) Assembly Removal
  136
- Patient Interface Harness Removal from Excel SE
  137
- Replacement Calibration Instructions (SIB)
  137
- Patient Interface Panel/Harness Assembly Removal from Modulus SE
  138
- Sib/Machine Interface Harness Removal
  140
- Test Unit after Repair as Follows
  140
- 7/ Illustrated Parts List
  141
- 7900 Service Kits
  141
- General
  141
- Special Instructions
  141
- Stock Numbers for Replacement Parts
  141
- Figure 7-1 Top Cover
  142
- Figure 7-9 Chassis Bottom View
  146
- Figure 7-10 Power Module Mounting
  147
- Figure 7-11 Power Module Components
  147
- Figure 7-12 Alarm Speaker
  148
- Figure 7-14 Battery
  149
- Figure 7-16 Manifold Components
  150
- Figure 7-18 Gas Inlet Valve
  151
- Figure 7-23 Free Breathing Valve
  154
- SIB Harnesses
  156
- Figure 8-7 Microcontroller Board Schematic Diagram
  164
- Figure 8-8 Microcontroller Board Schematic Diagram
  165
- Figure 8-9 Microcontroller Board Schematic Diagram
  166
- Figure 8-10 Microcontroller Board Schematic Diagram
  167
- Figure 8-11 Microcontroller Board Schematic Diagram
  168
- Figure 8-12 Microcontroller Board Schematic Diagram
  169
- Figure 8-13 Microcontroller Board Schematic Diagram
  170
- Figure 8-14 Microcontroller Board Schematic Diagram
  171
- Figure 8-15 Microcontroller Board Schematic Diagram
  172
- Figure 8-17 Power Supply Board Schematic Diagram
  174
- 9/ Accessories, Miscellaneous Parts
  179
- O&M Manuals
  180

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