Name: Mindray A8
Brand: Mindray
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3. Select Setup > Service > Calibrate > Vaporizer Injector to access the screen shown below.

Select vaporizer 2 (for example, Iso vaporizer). (Note: The calibration steps of vaporizer 1 are the

same as those of vaporizer 2.)

4. Select Begin to start calibration. During calibration, you can select Cancel to abort the

calibration.

Intellectual Property Statement3
Revision History3
Preface4
Manual Purpose4
Table of Contents5
Safety15
Safety Information15
Warnings15
Cautions22
Notes26
Theory of Operation29
System Overview29
Introduction29
Appearance31
Labels43
Acronyms and Abbreviations47
Subsystems50
Electrical Circuit50
Power System53
Display System56
Monitoring System60
EFCS Flowmeter System63
Auxiliary O2/Air System66
Electronic Vaporizer System (A9)72
Other Parts72
Pneumatic Part80
Symbols87
Gas Supply Subsystem87
Flowmeter Subsystem94
Vaporizer Subsystem95
Breathing Subsystem100
Auxiliary Gas Supply Subsystem107
AGSS Subsystem108
Negative Pressure Suction Subsystem112
Installation Guide115
Preparations115
Accessories115
Tools115
Installation Procedure115
Unpacking116
Installation119
Tests after Installation126
Maintenance Period127
Pre-Maintenance Check127
Parts of the Maintenance Packages127
Installation Positions of the Sealing Rings and Filters in the Maintenance Packages127
Maintenance Report132
Testing133
Power-On Self-Test133
Performing the Power-On Self-Test133
Power-On Self-Test Alarm Messages133
System Check134
Performing the System Check135
Gas Supply Tests136
O2 Supply Test136
N2O Supply Test136
AIR Supply Test136
Cylinder Supply Tests137
N2O Cylinder Supply Test137
O2 Cylinder Supply Test137
AIR Cylinder Supply Test138
EFCS Accuracy Test138
BFCS Function Tests139
Checking Needle Valve Correspondence139
Checking Needle Valve Not Closed139
Accuracy Confirmation Test140
Electronic Vaporizer Test (A9 Only)140
Vaporizer Monitoring Function Test140
Vaporizer Self-Locking Test141
Vaporizer Interlock Test141
Vaporizer Accuracy Test142
Mechanical Vaporizer Test (A8 Only)143
Vaporizer Interlock Test143
Vaporizer Back Pressure Test143
Vaporizer Accuracy Test143
Vaporizer Leak Test144
Other Functional Tests145
High-Flow O2 Supply Test145
High-Pressure O2 Output Test145
O2 Flush Test146
Mechanical ACGO Function Test146
Internal AG Module Test146
Circuit Function Tests147
O2 Concentration and Tidal Volume Test147
APL Valve Test147
Patient Circuit Heating Test148
Sample Gas Return Test148
Active AGSS Check148
Negative Pressure Suction Tests149
Alarm Tests149
Power Failure Alarm Test149
Breathing Circuit Alarm Tests149
O2 Supply Failure and Balance Gas Branch Flow Not Achieved Alarm Tests5-18150
Ventilator-Related Alarm Tests151
System Ventilation Performance Tests153
Manual Mode Ventilation Test153
VCV Adult Ventilation Mode Test153
VCV Pediatric Ventilation Mode Test154
PCV Adult Ventilation Mode Test155
Sensor Zero Point Check155
Constant Flow Test (Checking the Flow Sensor Accuracy)156
Constant Flow Test (Checking the Pressure Sensor Accuracy)157
Electrical Tests159
Auxiliary Power Receptacle Test159
Work Light Test159
Electrical Safety Inspection Test160
System Calibration163
Overview163
Precautions163
Warnings163
Cautions164
Notes164
System Calibration165
Flow Calibration (User)167
O2 Sensor Calibration (User)174
Flowmeter Zeroing (User)182
High-Flow O2 Supply Zeroing (User)185
Pressure Calibration (Service)189
Expiratory Valve Calibration (Service)201
Pressure and Flow Zeroing (Service)205
Total Flow Sensor Calibration (Service)208
Internal AG Calibration (User)213
External AG Calibration (User)214
NMT Sensor Check (User) (Canada Only)215
Vaporizer Injector Calibration (Service) (A9 Only)218
Tests after Calibration224
Troubleshooting225
Precautions225
Power-On Troubleshooting225
Power-On and Display Failures225
Auxiliary Outlet Failures226
Leak Test Failures in Auto Mode226
Leak Test Failures in Manual Mode228
Technical Alarms229
Power-On Self-Test Alarms229
CPU Board Runtime Alarms235
Power Board Runtime Alarms236
Electronic Flowmeter and BFCS Runtime Alarms239
VCM Runtime Alarms244
Electronic Vaporizer Runtime Alarms251
AGSS Module Runtime Alarms255
Auxiliary O2/Air Module Runtime Alarms255
HFNC Module Runtime Alarms256
External AG Module Runtime Alarms256
Internal AG Module Runtime Alarms260
BIS Module Runtime Alarms261
CO2 Module Runtime Alarms265
NMT Module Runtime Alarms268
Typical Troubleshooting270
Failure to Exit the Standby Mode270
Auto/Manual Switchover Failure270
Mechanical Ventilation Stop271
Inaccurate Tidal Volume Control271
Inaccurate Airway Pressure Control272
Inaccurate PEEP Control273
Irregular Flow Waveforms274
BFCS Failures275
Electronic Vaporizer Failures276
AGSS Failures278
Auxiliary O2/Air and HFNC Module Failures279
After-Service Tests281
Diagnostic Tests281
Valves Test281
Insp Valve Test286
PEEP Valve Test287
Safety Valve Test288
FCS Tests289
Vaporizer Tests (A9)293
HFNC Test299
Repair and Disassembly301
Disassemble the O2 Cell Holder Assembly301
Prepare for Disassembly301
Remove the O2 Cell Holder Assembly301
Disassemble the Sodalime Absorber Canister Assembly301
Remove the Sodalime Absorber Canister Assembly302
Disassemble the Bypass Assembly302
Prepare for Disassembly302
Remove the Bypass Assembly302
Disassemble the Bag Arm Assembly303
Prepare for Disassembly303
Remove the Bag Arm Assembly303
Disassemble the Patient Circuit Assembly303
Remove the Patient Circuit Assembly304
Disassemble the APL Valve Assembly304
Prepare for Disassembly304
Remove the APL Valve Assembly304
Disassemble the Locking Nuts of the Inspiration and Expiration Connectors305
Prepare for Disassembly305
Remove the Locking Nuts of the Inspiration and Expiration Connectors305
Disassemble the Inspiration and Expiration Connectors306
Prepare for Disassembly306
Remove the Inspiration and Expiration Connectors306
Disassemble the Water Collection Cup306
Remove the Water Collection Cup306
Disassemble the Volume Exchanger Assembly307
Prepare for Disassembly307
Remove the Volume Exchanger Assembly307
Disassemble the VE Box Assembly307
Remove the VE Box Assembly308
Disassemble the VE Mounting Box In-Position Switch308
Prepare for Disassembly308
Remove the VE Mounting Box In-Position Switch309
Pre-Disassembly (Disassemble Housings and some System Parts)309
Open the Service Door309
Remove the Auxiliary Output Assembly309
Remove the Rear Cover Plate of the Work Surface310
Remove the Work Surface Cover Plate FRU310
Remove the Instrument Panel Assembly310
Remove the Upper-Left Cover Plate311
Remove the Display Assembly312
Disassemble the N2O, Air, and O2 Inlet Assemblies312
Prepare for Disassembly312
Remove the N2O, Air, and O2 Inlet Assemblies313
Disassemble the Pipeline Negative Pressure Inlet Assembly313
Prepare for Disassembly313
Remove the Pipeline Negative Pressure Inlet Assembly314
Disassemble the Pressure Switch (Gas Inlet)314
Prepare for Disassembly314
Remove the Pressure Switch (Gas Inlet)315
Disassemble the I/O Interface Board315
Prepare for Disassembly315
Remove the I/O Interface Board315
Disassemble the Monitoring Board316
Prepare for Disassembly316
Remove the Monitoring Board316
Disassemble the AC-DC Board317
Prepare for Disassembly317
Remove the AC-DC Board317
Disassemble the DC-DC Board318
Prepare for Disassembly318
Remove the DC-DC Board318
Disassemble the Motherboard319
Prepare for Disassembly319
Pre-Disassembly319
Remove the Motherboard FRU319
Disassemble the Pressure Regulator Assembly (0645)320
Prepare for Disassembly320
Remove the Pressure Regulator Assembly (0645)320
Disassemble the EFCS Flowmeter Monitoring Board320
Remove the EFCS Flowmeter Monitoring Board321
Disassemble the EFCS Flowmeter FRU (O2/N2O/Air)321
Prepare for Disassembly321
Remove the EFCS Flowmeter FRU (O2/N2O/Air)321
Disassemble the EFCS Flowmeter Flow Sensors322
Prepare for Disassembly322
Remove the EFCS Flowmeter Flow Sensors322
Disassemble the N2O, Air, and O2 Cylinder Yoke Assemblies323
Prepare for Disassembly323
Remove the N2O, Air, and O2 Cylinder Yoke Assemblies324
Disassemble the Sensor Adapter Board PCBA324
Prepare for Disassembly324
Remove the Sensor Adapter Board PCBA325
Disassemble the High-Flow O2 Supply Assembly or Auxiliary O2/Air Assembly325
Prepare for Disassembly325
Remove the High-Flow O2 Supply Assembly or Auxiliary O2/Air Assembly8-26326
Disassemble the System Switch Assembly326
Prepare for Disassembly326
Remove the System Switch Assembly327
Disassemble the High-Flow O2 Therapy Flowmeter or Auxiliary Output Flowmeter Assembly327
Prepare for Disassembly327
Remove the High-Flow O2 Therapy Flowmeter or Auxiliary Output Flowmeter Assembly328
Disassemble the Upper-Half Drawer Assembly328
Prepare for Disassembly328
Remove the Upper-Middle Drawer Assembly328
Disassemble the Lower Drawer Assembly329
Prepare for Disassembly329
Remove the Lower Drawer Assembly329
Disassemble the CO2 Locking Assembly330
Prepare for Disassembly330
Remove the CO2 Locking Assembly330
Disassemble the AGSS Assembly331
Prepare for Disassembly331
Remove the AGSS Assembly331
Disassemble the Module Rack Assembly332
Prepare for Disassembly332
Remove the Module Rack Assembly332
Disassemble the Battery Box Assembly333
Prepare for Disassembly333
Remove the Battery Box Assembly333
Disassemble the Anesthesia Calculation Pipeline Assembly334
Prepare for Disassembly334
Remove the Anesthesia Calculation Pipeline Assembly334
Disassemble the Drive Gas Assembly334
Remove the Drive Gas Assembly335
Disassemble the ACGO Assembly335
Prepare for Disassembly335
Remove the ACGO Assembly335
Disassemble the O2 Cell Calibration Valve Assembly336
Prepare for Disassembly336
Remove the O2 Cell Calibration Valve Assembly336
Disassemble the Air Filter337
Prepare for Disassembly337
Remove the Air Filter337
Disassemble the AG Module337
Remove the AG Module338
Disassemble the Valve Cover338
Prepare for Disassembly338
Remove the Valve Cover Assembly338
Disassemble the One-Way Valve339
Prepare for Disassembly339
Remove the One-Way Valve339
Disassemble the Vaporizer Manifold Assembly (A9)339
Remove the Vaporizer Manifold Assembly340
Disassemble the Electronic Vaporizer Base Interface Board PCBA (A9)341
Prepare for Disassembly341
Remove the Electronic Vaporizer Base Interface Board PCBA341
Disassemble the O-Ring of Gas Connector (A9)341
Remove the O-Ring of Gas Connector (A9)342
Disassemble the Pneumatically-Controlled Lock Assemblies (A9)342
Prepare for Disassembly342
Remove the Pneumatically-Controlled Lock Assemblies343
Disassemble the Small-Screen CPU Board (Without the Display Cable)343
Prepare for Disassembly343
Remove the Small-Display CPU Board Assembly (Without the Display Cable)8-44344
Disassemble the Small Display344
Prepare for Disassembly344
Remove the Small Display Assembly345
Disassemble the Backup Flowmeter Assembly346
Prepare for Disassembly346
Remove the Backup Flowmeter Assembly346
Disassemble the Backup Flowmeter Door Electromagnet347
Prepare for Disassembly347
Remove the Backup Flowmeter Door Electromagnet348
Disassemble the Indicator Light Board348
Prepare for Disassembly348
Remove the Indicator Light Board348
Disassemble the Segment Display349
Prepare for Disassembly349
Remove the Segment Display349
Disassemble the Encoder Beside the Segment Display350
Prepare for Disassembly350
Remove the Encoder Beside the Segment Display350
Disassemble the BFCS Switch Control Board351
Prepare for Disassembly351
Remove the BFCS Switch Control Board352
Disassemble the BFCS Door Assembly352
Prepare for Disassembly352
Remove the BFCS Door Assembly352
Disassemble the Backup Flowmeter Keyboard353
Prepare for Disassembly353
Remove the Backup Flowmeter Keyboard353
Disassemble the Alarm Lamp Board354
Prepare for Disassembly354
Removing the Alarm Lamp Board354
Disassemble the Speaker354
Remove the Speaker355
Disassemble the Display Service Kit355
Prepare for Disassembly355
Remove the Display Service Kit355
Disassemble the CPU Board PCBA355
Remove the CPU Board PCBA356
Disassemble the Key Lighting Board356
Prepare for Disassembly356
Remove the Key Lighting Board356
Disassemble the Encoder Knob (Top Hat-Shaped)357
Prepare for Disassembly357
Remove the Encoder Knob (Top Hat-Shaped)357
Disassemble the Flow Regulator Encoder and Two Gas Knobs358
Prepare for Disassembly358
Remove the Flow Regulator Encoder and Two Gas Knobs358
Disassemble the Airway Pressure Gauge358
Remove the Airway Pressure Gauge359
Disassemble the Auto/Manual Switch Assembly359
Prepare for Disassembly359
Remove the Auto/Manual Switch Assembly360
Disassemble the Upper-Left Cover Plate FRU360
Prepare for Disassembly360
Remove the Upper-Left Cover Plate FRU361
Disassemble the O2 Cell Door Cover Assembly361
Prepare for Disassembly361
Remove the O2 Cell Door Cover Assembly362
Disassemble the O2 Cell Cable362
Prepare for Disassembly362
Remove the O2 Cell Cable362
Disassemble the Circuit Adapter Block Assembly363
Prepare for Disassembly363
Remove the Circuit Adapter Block Assembly363
Disassemble the Circuit Switch (Hook Lock)364
Prepare for Disassembly364
Remove the Circuit Switch (Hook Lock)364
Disassemble the Circuit Heater365
Prepare for Disassembly365
Remove the Circuit Heater365
Disassemble the Auto/Manual Position Detection Switch366
Prepare for Disassembly366
Remove the Auto/Manual Position Detection Switch366
Disassemble the APL Valve Mounting Base Assembly367
Prepare for Disassembly367
Remove the APL Valve Mounting Base Assembly367
Disassemble the Auto/Manual Drive Valve Assembly368
Prepare for Disassembly368
Remove the Auto/Manual Drive Valve Assembly368
Disassemble the STEINCO 5-Inch Central Control Caster368
Remove the STEINCO 5-Inch Central Control Caster369
Disassemble the STEINCO 5-Inch Standalone Brake Casters372
Prepare for Disassembly372
Remove the STEINCO 5-Inch Standalone Brake Casters373
Software Upload375
Preparations376
Upgrading the Software377
Upgrade Via USB Drive380
Test after Upgrade380
Software Function Activation381
Application of Software Function Activation Codes381
Activation Procedure382
Frus385
Mechanical Subsystem385
Display Assembly385
Cylinder Yoke Assembly387
High-Flow O2 Therapy Flowmeter Assembly, and System Switch Assembly11-4388
High-Flow O2 Supply Assembly, Anesthesia Calculation Inlet Pipeline Assembly, and EFCS Flowmeter Service Part389
Instrument Panel Assembly390
O2 Cell Door Cover Assembly, O2 Cell Calibration Valve Assembly, and ACGO Assembly392
Built-In AG Assembly (A9)393
Gas Inlet Assembly394
Drawer and Battery Box Assemblies396
Circuit Adapter Block Assembly397
Boards398
Work Surface and Left Cover Plate399
Mechanical Vaporizer Subsystem (A8)401
AGSS Assembly402
VE Mounting Box Assembly403
Sensor Adapter Board PCBA404
Drive Gas Assembly409
Gas Supply Subsystem410
O2 Inlet Assembly410
Flowmeter Subsystem411
EFCS Assembly411
Vaporizer Subsystem(A9)412
Electronic Vaporizer Base412
Breathing Circuit Subsystem413
Patient Circuit Material Package413
Patient Circuit Assembly414
Circuit Connector Adapter Assembly415
A Tube Connection Diagrams417

Brand	Mindray
Model	A8
Category	Medical Equipment
Language	English

Mindray A8 Service Manual

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