Service Manual ™ | ™ | ™ AnesthesANEiaSTH SystemESIA SYSTEM A5_A3_Srv Mnl Cover-046-001142-00.indd 1 10/11/11 10:59 AM Service Manual ™ | ™ | ™ ANESneTHEsthSIA esSYSTEMANEiaSTH SystemESIA SYSTEM A5_A3_Srv Mnl Cover-046-001143-00.indd 1 10/11/11 10:59 AM A5™, A4™, and A3™ are U.S. trademarks of Mindray DS USA, Inc. Selectatec® is a registered trademark of Ohmeda. Copyright © Mindray DS USA, Inc., 2010 to 2019. All rights reserved. Contents of this publication may not be reproduced in any form without permission of Mindray DS USA, Inc. Table of Contents Table of Contents Table of Contents .................................................................................................................................................................................................................1 Foreword .................................................................................................................................................................................................................................1 Warnings, Cautions, and Notes .......................................................................................................................................................................................1 Warnings..................................................................................................................................................................................................................................1 Cautions...................................................................................................................................................................................................................................2 Notes.........................................................................................................................................................................................................................................3 Theory of Operation ............................................................................................................................................ 1 - 1 Introduction..........................................................................................................................................................................................1 - 2 Electrical and Pneumatic Connections .......................................................................................................................................1 - 4 Electrical Connections (A3/A4).......................................................................................................................................................................1 - 4 Electrical Connections (A5) ..............................................................................................................................................................................1 - 7 Pneumatic Connections (A3/A4)....................................................................................................................................................................1 - 9 Pneumatic Connection (A5).......................................................................................................................................................................... 1 - 13 Connections Between Pneumatic Circuit, Breathing System and Ventilator Control Board................................................ 1 - 17 Gas Flow .............................................................................................................................................................................................. 1 - 20 Pneumatic Circuit Diagram........................................................................................................................................................................... 1 - 20 Parts List............................................................................................................................................................................................................... 1 - 21 Key to Symbols.................................................................................................................................................................................................. 1 - 22 Description.......................................................................................................................................................................................................... 1 - 22 Anesthesia System Components ............................................................................................................................................... 1 - 38 Auxiliary Outlets................................................................................................................................................................................................ 1 - 38 Work Light Board.............................................................................................................................................................................................. 1 - 38 The Breathing System .................................................................................................................................................................... 1 - 41 Brief Introduction ............................................................................................................................................................................................. 1 - 41 Automatic Mode, Inspiration ....................................................................................................................................................................... 1 - 41 Automatic Mode, Expiration ........................................................................................................................................................................ 1 - 42 Manual Mode, Inspiration ............................................................................................................................................................................. 1 - 42 Manual Mode, Expiration............................................................................................................................................................................... 1 - 43 Pneumatic PEEP ................................................................................................................................................................................................ 1 - 44 Ventilator in Standby ...................................................................................................................................................................................... 1 - 44 Breathing System Components .................................................................................................................................................................. 1 - 44 Ventilator UI ....................................................................................................................................................................................... 1 - 46 Display.................................................................................................................................................................................................................. 1 - 46 CPU Board ........................................................................................................................................................................................................... 1 - 53 Ventilator Control and Drive........................................................................................................................................................ 1 - 56 Mother Board..................................................................................................................................................................................................... 1 - 56 Ventilator Control and Drive Board ........................................................................................................................................................... 1 - 66 Battery .................................................................................................................................................................................................................. 1 - 73 Infrared Communication Board .................................................................................................................................................................. 1 - 75 Breathing System Heater............................................................................................................................................................................... 1 - 76 Ventilator Pneumatic- O2 Drive Gas ......................................................................................................................................... 1 - 77 Ventilator Pneumatic Drive........................................................................................................................................................................... 1 - 77 Drive Pressure-High Pressure Regulator (200 kPa, 29 psi)................................................................................................................. 1 - 77 Drive Gas Assembly ........................................................................................................................................................................................