Table of Contents
iv 046-006272-00 A7™ Service Manual
EFCS Zeroing (User) ........................................................................................................................................................................................ 4 - 49
Total Flow Sensor Calibration (factory) .................................................................................................................................................... 4 - 53
Calibrate the AG Module ............................................................................................................................................................................... 4 - 56
..........................................................................................................................................................Cylinder Yoke Regulator Calibration4 - 57
Adjust the back pressure valve.................................................................................................................................................................... 4 - 60
Repair and Troubleshooting............................................................................................................................... 5 - 1
Troubleshooting Guidelines ...........................................................................................................................................................5 - 2
Identify the problem ..........................................................................................................................................................................................5 - 2
Avoid shorting component leads together...............................................................................................................................................5 - 2
Use the proper equipment ..............................................................................................................................................................................5 - 2
Clean up the repair area....................................................................................................................................................................................5 - 2
Technical Alarms Check....................................................................................................................................................................5 - 3
Startup Alarm Messages ...................................................................................................................................................................................5 - 4
CPU Board Runtime Alarm ...............................................................................................................................................................................5 - 8
Power Board Runtime Alarm...........................................................................................................................................................................5 - 8
Runtime Alarms of Flow Sensor Board ..................................................................................................................................................... 5 - 10
Ventilator Control Board Runtime Alarm................................................................................................................................................. 5 - 16
Real-time Alarms of External AG Module................................................................................................................................................. 5 - 19
Runtime Alarms of Internal AG Module ........................................................... 5 - 22
Pneumatic Circuit System Problems......................................................................................................................................... 5 - 23
Tools for on-site Maintenance ..................................................................................................................................................................... 5 - 23
Gas Supplies and Drive Gas .......................................................................................................................................................................... 5 - 32
Anesthetic Gas Delivery System.................................................................................................................................................................. 5 - 41
Breathing System ............................................................................................................................................................................................. 5 - 53
Tidal Volume ...................................................................................................................................................................................................... 5 - 68
Sensors and Valves Problems ...................................................................................................................................................... 5 - 71
Correspondence with Pneumatic Circuit Components ..................................................................................................................... 5 - 71
Correspondence with Hardware Components ..................................................................................................................................... 5 - 71
Preparations before Using Diagnostic Tests........................................................................................................................................... 5 - 72
Zero Points of Flow & Pressure Sensors Problems ............................................................................................................................... 5 - 72
Connections and Measurement of the Flow Sensors Problems...................................................................................................... 5 - 73
Connections and Measurement of the Pressure Sensors Problems .............................................................................................. 5 - 73
Opening State of the Inspiratory Valve Problems ................................................................................................................................ 5 - 75
Opening States of the PEEP Safety Valve Problems............................................................................................................................. 5 - 75
Opening State of the PEEP Valve Problems............................................................................................................................................ 5 - 76
Basal Flow Adjustment of O2 Needle Valve............................................................................................................................................ 5 - 77
Hardware and Electrical Problems............................................................................................................................................. 5 - 79
Software Update and Software Configuration Activation................................................................................................ 5 - 81
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 - 14
Disassemble the Work Surface .................................................................................................................................................................... 6 - 27
Disassemble the Auxiliary Work Surface.................................................................................................................................................. 6 - 36
Disassemble the Display ................................................................................................................................................................................ 6 - 38
Remove the Module Rack Assembly ......................................................................................................................................................... 6 - 47
Remove the Module Rack Fan ..................................................................................................................................................................... 6 - 48
Remove the Panel of Pressure Gauges ..................................................................................................................................................... 6 - 49
Disassemble the Vacuum Suction Related Assembly ......................................................................................................................... 6 - 57
Remove the Auxiliary Gas Outlet Assembly............................................................................................................................................ 6 - 59
Remove the Rotating Block of Breathing Circle .................................................................................................................................... 6 - 60
Remove the AGSS Assembly ........................................................................................................................................................................ 6 - 61
Remove the Electronically Controlled ACGO Drive Valve.................................................................................................................. 6 - 62
Remove the Built-in Anesthesia Module.................................................................................................................................................. 6 - 63
Remove the ACGO Assembly (electronically controlled)................................................................................................................... 6 - 65
Remove Anesthesia Module Inlet Pipeline Assembly ......................................................................................................................... 6 - 66
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