Heyer Modular+ User manual

HEYER Modular+
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Anesthesia System
Service Manual
Rev.2.1.0
Software version Service software: 1.8

Table of Contents
2
HEYER MEDICAL AG
Carl-Heyer-Strasse 1-3
56130 Bad Ems
Germany
Tel. +49 - 2603 – 791 - 3
Fax. +49 - 2603 – 791 - 209
E-mail: [e-mail]

Theory of Operation
0 Table of Contents
0 Table of Contents............................................................................................................................. 3
0.1 Table of Figures........................................................................................................................ 6
1 General Information.......................................................................................................................... 7
1.1 Guidelines ................................................................................................................................. 7
1.2 Product improvements.............................................................................................................. 7
1.3 Manufacturer’s Liability ............................................................................................................. 7
1.4 Manufacturer’s specification ..................................................................................................... 8
1.5 Updating status ......................................................................................................................... 8
1.6 Warning, Precautions and Notes .............................................................................................. 9
1.6.1 Warnings............................................................................................................................ 9
1.6.2 Precautions...................................................................................................................... 10
1.6.3 Notes................................................................................................................................ 11
2 Theory of Operation ....................................................................................................................... 13
2.1 Microprocessor-Controlled Ventilator...................................................................................... 13
2.2 Patient Module........................................................................................................................ 13
2.3 Gas Conditioning Unit............................................................................................................. 13
2.4 The Ventilator Unit .................................................................................................................. 13
2.5 Adjustable Alarms................................................................................................................... 13
2.5.1 P
max
limiting on alarm violation......................................................................................... 14
2.6 Fresh Gas Decoupling ............................................................................................................ 14
2.7 Compliance compensation...................................................................................................... 14
2.8 Electrical supply...................................................................................................................... 15
2.8.1 Electrical components...................................................................................................... 16
2.9 Power supply module.............................................................................................................. 17
2.9.1 Connectors on power supply board AVM 2-1.................................................................. 18
2.9.2 Fuses on power supply board AVM 2-1........................................................................... 19
2.9.3 Charging / discharging control for the battery:................................................................. 20
2.9.4 Status Indicators Of Battery Control:...............................................................................20
2.10 Module 1.............................................................................................................................. 21
2.10.1 Connectors on module 1..............................................................................................22
2.11 Ventilator Module 2, AVM 3-1 and AVM 3-2 ....................................................................... 23
2.11.1 Parts list module 2........................................................................................................ 24
2.11.2 Connectors on module 2..............................................................................................24
2.11.2.1 Plug connectors on board AVM 3-1 ........................................................................24
2.11.2.2 Plug connectors on board AVM3-2 ......................................................................... 25
2.12 Display................................................................................................................................. 25
2.13 Battery ................................................................................................................................. 25
2.14 Ventilator pneumatic............................................................................................................ 26
2.14.1 Ventilator pneumatic drive............................................................................................ 27
2.14.2 HP pressure reducer.................................................................................................... 27
2.14.3 LP- double stage pressure reducer.............................................................................. 27
2.14.4 Solenoid valves MV1 to MV4....................................................................................... 27
2.14.5 Pneumatic driving module............................................................................................ 28
2.14.6 Flow metering module.................................................................................................. 28
2.14.7 Tube color coding......................................................................................................... 28
2.15 The patient module (circle system) ..................................................................................... 29
2.15.1 Front and back side view on the patient module.......................................................... 29
2.15.2 Bottom and back side view on the patient module....................................................... 30
2.15.3 Functional representations of the patient module........................................................ 31
2.15.3.1 CMV mode, inspiration............................................................................................ 32
2.15.3.2 CMV mode, expiration............................................................................................. 33
2.15.3.3 Manual mode, inspiration ........................................................................................ 34
2.15.3.4 Manual mode, expiration......................................................................................... 35
2.15.3.5 Spontaneous mode, inspiration............................................................................... 36
2.15.3.6 Spontaneous mode, expiration................................................................................ 37
2.15.4 Components of the patient module..............................................................................38
2.15.4.1 Ventilation bellows system ...................................................................................... 38
2.15.4.2 Manual Respiration Bag / Reservoir........................................................................ 38
2.15.4.3 CO
2
absorber........................................................................................................... 38

Theory of Operation
4
2.15.4.4 Inspiratory and expiratory valves............................................................................. 38
2.15.4.5 Airway pressure relief valve .................................................................................... 38
2.15.4.6 Room Air valve........................................................................................................ 38
2.15.4.7 Diaphragm valves.................................................................................................... 38
2.15.2.7.1 Status of the diaphragm valves:....................................................................... 39
2.15.2.7.2 Machine OFF Or Ventilator In Standby............................................................ 39
2.15.2.7.3 Manual / Spontaneous Mode, INSPIRATION And EXPIRATION.................... 39
2.15.2.7.4 CMV Child / Adult Mode, INSPIRATION.......................................................... 39
2.15.2.7.5 CMV Child / Adult, EXPIRATION..................................................................... 39
2.15.2.7.6 CMV Adult, EXPIRATION And PEEP .............................................................. 39
2.15.2.7.7 Compliance Test Patient Module ..................................................................... 40
2.15.2.7.8 Leak Test Patient Module and Fresh Gas Module........................................... 40
3 Repair Information.......................................................................................................................... 41
3.1 Introduction ............................................................................................................................. 41
3.2 Warnings and precautions ...................................................................................................... 41
3.2.1 Precautions...................................................................................................................... 41
3.2.2 Warnings.......................................................................................................................... 41
3.3 Troubleshooting Guidelines .................................................................................................... 42
3.4 Troubleshooting Charts........................................................................................................... 42
3.4.1 Error Messages during ventilation................................................................................... 42
3.4.2 Alarm messages during the compliance test, leak test and O2 calibration.....................46
3.4.2.1 Messages during the system tests........................................................................... 47
3.4.3 Symptoms of Fuse Failures............................................................................................. 49
3.5 Required Tools........................................................................................................................ 50
3.6 Disassembly instructions......................................................................................................... 50
3.6.1 Connecting and disconnecting vaporizers....................................................................... 50
3.6.2 Removing the compressed gas tanks (PIN-Index).......................................................... 50
3.6.3 Removing the Patient Module..........................................................................................51
3.6.4 Removing the CO
2
Absorber Canister............................................................................. 51
3.6.5 Removing the Bellows and Dome System ......................................................................51
3.6.6 Removing the Airway Pressure Limiting Valve (APL)...................................................... 51
3.6.7 Inspecting/replacing the Decoupling, Bellow and Expiratory Valves............................... 52
3.6.8 Disassembling the Room Air, Inspiration and expiration valves...................................... 52
3.6.9 Removing the Gas Block Module .................................................................................... 52
3.6.10 Removing the flow tubes.............................................................................................. 52
3.6.11 Removing the pressure gauges ................................................................................... 53
3.6.12 Removing the Module 2 Circuit Board Set................................................................... 53
3.6.13 Removing Module1 Circuit Board Set.......................................................................... 53
3.6.14 Removing the Power Supply Module........................................................................... 53
3.6.15 Removing Internal Regulators, Proportional Valve and Flow Divider.......................... 54
4 Maintenance and Calibration ......................................................................................................... 55
4.1 Introduction ............................................................................................................................. 55
4.2 Calibration Warnings and Precautions.................................................................................... 55
4.3 Test Procedure........................................................................................................................ 56
4.3.1 General ............................................................................................................................ 56
4.3.2 Inspecting/replacing consumable parts ........................................................................... 56
4.3.3 Power supply checks....................................................................................................... 61
4.3.4 Functional Tests............................................................................................................... 62
4.3.4.1 Pneumatic tests........................................................................................................ 62
4.3.4.2 Alarm Tests............................................................................................................... 63
4.3.4.3 Electrical Tests ......................................................................................................... 65
4.4 Service Software..................................................................................................................... 66
4.5 Key code Access..................................................................................................................... 67
4.6 Navigation ............................................................................................................................... 68
4.6.1 System Testing................................................................................................................ 70
4.6.2 Coefficient programming.................................................................................................. 79
4.6.2.1 O
2
sensor calibration ................................................................................................ 79
4.6.2.2 P1 Pressure sensor calibration................................................................................. 81
4.6.2.3 P2 Pressure sensor calibration................................................................................. 83
4.6.2.4 Temperature Sensor Calibration .............................................................................. 85
4.6.2.5 Proportional Valve Calibration.................................................................................. 87
4.6.2.6 Internal Flow Sensor Calibration .............................................................................. 92

Theory of Operation
5
4.6.2.7 Characteristic of the Proportional Valve................................................................... 94
4.6.2.8 External Flow Sensor Calibration............................................................................. 96
5 Preventive Maintenance................................................................................................................. 99
5.1 6 Month Service Interval .........................................................................................................99
5.2 12 Month Service Interval .....................................................................................................100
5.3 36 Month Service Interval .....................................................................................................100
5.4 Cleaning................................................................................................................................ 101
5.4.1 Cleaning and disinfecting the apparatus ....................................................................... 101
5.4.2 Cleaning and sterilizing the Patient Module .................................................................. 101
5.5 Battery Replacement and Maintenance................................................................................ 101
5.5.1 Battery replacement....................................................................................................... 101
5.5.2 Battery Maintenance...................................................................................................... 101
6 Order Information ......................................................................................................................... 103