Table of Contents
4 046-001141-00 A5/A3™ Service Manual
Startup Alarm Messages ...................................................................................................................................................................................5 - 3
CPU Board Runtime Alarm ...............................................................................................................................................................................5 - 6
Power Board Runtime Alarm...........................................................................................................................................................................5 - 6
Fresh Flow Sensor Board Alarm .....................................................................................................................................................................5 - 8
Ventilator Control Board Runtime Alarm................................................................................................................................................. 5 - 10
Real-time Alarms of External AG Module................................................................................................................................................. 5 - 13
Pneumatic Circuit System Problems......................................................................................................................................... 5 - 17
Tools for on-site Maintenance ..................................................................................................................................................................... 5 - 17
Gas Supplies and Drive Gas .......................................................................................................................................................................... 5 - 26
Anesthetic Gas Delivery System.................................................................................................................................................................. 5 - 35
Breathing System ............................................................................................................................................................................................. 5 - 50
Tidal Volume ...................................................................................................................................................................................................... 5 - 64
Sensors and Valves Problems ...................................................................................................................................................... 5 - 67
Correspondence with Pneumatic Circuit Components ..................................................................................................................... 5 - 67
Correspondence with Hardware Components ..................................................................................................................................... 5 - 67
Preparations before Using Diagnostic Tests........................................................................................................................................... 5 - 68
Zero Points of Flow & Pressure Sensors Problems ............................................................................................................................... 5 - 68
Connections and Measurement of the Flow Sensors Problems...................................................................................................... 5 - 69
Connections and Measurement of the Pressure Sensors Problems .............................................................................................. 5 - 70
Opening State of the Inspiratory Valve Problems ................................................................................................................................ 5 - 71
Opening States of the PEEP Safety Valve Problems............................................................................................................................. 5 - 71
Opening State of the PEEP Valve Problems............................................................................................................................................ 5 - 72
Hardware and Electrical Problems............................................................................................................................................. 5 - 73
Software Update and Software Configuration Activation................................................................................................ 5 - 75
Repair and Disassembly ...................................................................................................................................... 6 - 1
Prepare for Disassembly...................................................................................................................................................................6 - 2
Tools.........................................................................................................................................................................................................................6 - 2
Preparations ..........................................................................................................................................................................................................6 - 2
Bleed Gas Pressure..............................................................................................................................................................................................6 - 2
Disassemble the Assemblies...........................................................................................................................................................6 - 3
Disassemble the Internal Assemblies of the Machine Upper Half.....................................................................................................6 - 3
Disassemble Hardware Box .............................................................................................................................................................................6 - 8
Disassemble the Work Surface .................................................................................................................................................................... 6 - 19
Disassemble the Display ................................................................................................................................................................................ 6 - 29
Remove the Module Rack Assembly ......................................................................................................................................................... 6 - 38
Remove the Module Rack Fan ..................................................................................................................................................................... 6 - 39
Remove the Panel of Pressure Gauges ..................................................................................................................................................... 6 - 40
Remove the Auxiliary Gas Outlet Assembly............................................................................................................................................ 6 - 42
Remove the Rotating Block Cover of Breathing Circle........................................................................................................................ 6 - 43
Remove the AGSS Assembly ........................................................................................................................................................................ 6 - 43
Disassemble the Base Assembly ................................................................................................................................................................. 6 - 44
Disassemble the Breathing System........................................................................................................................................... 6 - 47
Remove the O2 Sensor and Cable.............................................................................................................................................................. 6 - 47
Remove the Breathing Tubes....................................................................................................................................................................... 6 - 48
Remove the Flow Sensor ............................................................................................................................................................................... 6 - 49
Remove the Manual Bag................................................................................................................................................................................ 6 - 50
Remove the Absorbent Canister................................................................................................................................................................. 6 - 50
Remove the CO2 Bypass Assembly............................................................................................................................................................ 6 - 52
Remove the Patient Circle Assembly......................................................................................................................................................... 6 - 54
Remove the Bellows Assembly.................................................................................................................................................................... 6 - 54
Remove the Pop-off Valve Assembly ........................................................................................................................................................ 6 - 55
Disassemble the Expiratory/Inspiratory Check Valve Assemblies .................................................................................................. 6 - 57
Remove the Water Collection Cup............................................................................................................................................................. 6 - 58
Remove the Airway Pressure Gauge ......................................................................................................................................................... 6 - 59
Remove the Bag Arm ...................................................................................................................................................................................... 6 - 59
Remove the Back Upper Cover and Back Lower Cover Assemblies............................................................................................... 6 - 60
Remove the Front Upper Cover, Median Plate and Front Lower Cover Assemblies ............................................................... 6 - 62
Disassemble the Automatic/Manual Ventilation Switch Assembly............................................................................................... 6 - 64
Remove the APL Valve Assembly ............................................................................................................................................................... 6 - 66
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