Datex-Ohmeda Aestiva Reference Manual

Aestiva Anesthesia Machine

Technical Reference Manual

Aestiva

Datex-Ohmeda products have unit serial numbers with coded logic which indicates a product group code, the year of manufacture, and a sequential unit number for identification. The serial number can be in one of two formats.

AAAX11111 AA AXX111111A A

The X represents an alpha character indicating the year the product was manufactured; H = 2004, J = 2005, etc. IIII and O are not used.

The XX represents a number indicating the year the product was manufactured;

= 2004, 05 = 2005, etc.

Aestiva, SmartVent,

and

Link-25

are registered trademarks of Datex-Ohmeda Inc.

Other brand names or product names used in this manual are trademarks or registered trademarks of their respective holders.

09/06 1006-0452-000

Technical Reference Manual

estiva Anesthesia Machine

This document is not to be reproduced in any manner, nor are the contents to be disclosed to anyone, without the express authorization of the product service department, Datex-Ohmeda, Ohmeda Drive, PO Box 7550, Madison, Wisconsin,

53707.

2006 Datex-Ohmeda Inc.

1006-0452-000 09/06

Aestiva

Important

The information contained in this Technical Reference manual pertains only to those models of products which are marketed by Datex-Ohmeda as of the effective date of this manual or the latest revision thereof. This Technical Reference manual was prepared for exclusive use by Datex-Ohmeda service personnel in light of their training and experience as well as the availability to them of parts, proper tools and test equipment. Consequently, Datex-Ohmeda provides this Technical Reference manual to its customers purely as a business convenience and for the customer's general information only without warranty of the results with respect to any application of such information. Furthermore, because of the wide variety of circumstances under which maintenance and repair activities may be performed and the unique nature of each individual's own experience, capacity, and qualifications, the fact that customer has received such information from Datex-Ohmeda does not imply in anyway that DatexOhmeda deems said individual to be qualified to perform any such maintenance or repair service. Moreover, it should not be assumed that every acceptable test and safety procedure or method, precaution, tool, equipment or device is referred to within, or that abnormal or unusual circumstances, may not warrant or suggest different or additional procedures or requirements.

This manual is subject to periodic review, update and revision. Customers are cautioned to obtain and consult the latest revision before undertaking any service of the equipment. Comments and suggestions on this manual are invited from our customers. Send your comments and suggestions to the Manager of Technical Communications, Datex-Ohmeda, Ohmeda Drive, PO Box 7550, Madison, Wisconsin

53707.

wwww CAUTION

Servicing of this product in accordance with this should never be undertaken in the absence of proper tools, test equipment and the most recent revision to this service manual which is clearly and thoroughly understood.

Technical Competence

The procedures described in this Technical Reference manual should be performed by trained and authorized personnel only. Maintenance should only be undertaken by competent individuals who have a general knowledge of and experience with devices of this nature. No repairs should ever be undertaken or attempted by anyone not having such qualifications.

Datex-Ohmeda strongly recommends using only genuine replacement parts, manufactured or sold by Datex-Ohmeda for all repair parts replacements.

Technical Reference

manual

Read completely through each step in every procedure before starting the procedure; any exceptions may result in a failure to properly and safely complete the attempted procedure.

09/06 1006-0452-000

Table of Contents

Important . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

Technical Competence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

1 Introduction

1.1 What this manual includes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2 Standard service procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2.1 Operation manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2.2 Service manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.3 What is an Aestiva . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

1.4 Configuration options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

1.5 Symbols used in the manual or on the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

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2 Theory of Operation

2.1 Theory overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

2.2 Gas flow through the anesthesia machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

2.2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

2.2.2 Physical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

2.2.3 Induction machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8

2.2.4 Wall-rail mount machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.2.5 System switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.2.6 Flow control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2.3 Flow through the breathing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2.3.1 Overview of flow paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2.3.2 Manual ventilation — Circle Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.3.3 Mechanical ventilation — Circle Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

2.3.4 Fresh gas flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

2.3.5 Different breathing circuit modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

2.3.6 CO2 Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

2.3.7 Auxiliary Common Gas Outlet (ACGO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2.4 Electrical and pneumatic signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

2.4.1 Summary of signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

2.4.2 Subfloor tubing and wiring connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

2.4.3 Breathing circuit module ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

2.4.4 Control panel switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

2.4.5 Canister switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

2.5 Ventilator monitoring and control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

2.5.1 Summary of ventilator function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

2.5.2 Volume Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

2.5.3 Pressure Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

2.5.4 PEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

2.5.5 O2 Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

2.5.6 Volume Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

2.5.7 Volume Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

2.5.8 Pressure Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

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3 Checkout Procedure

3.1 Inspect the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

3.2 Electrical safety tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

3.3 Power failure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.4 Minimize alarms (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.5 Pipeline and cylinder tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

3.6 Flow control and pressure relief tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

3.7 Vaporizer back pressure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9

3.8 Flow sensor check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

3.9 Low-pressure leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

3.10 Alarm tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

3.11 Breathing system tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

3.12 Auxiliary O2 flowmeter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

3.13 Integrated Suction Regulator tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

4 Repair Procedures

4.1 Servicing the ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

4.2 How to bleed gas pressure from the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

4.3 How to remove the rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

4.4 How to remove the side panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7

4.5 Service the pipeline inlet (pneumatic) manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8

4.5.1 Remove pneumatic manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8

4.5.2 Replace pipeline inlet fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9

4.5.3 Replace pipeline inlet filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9

4.5.4 Replace pipeline inlet check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.5.5 Replace pneumatic O2 power outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

4.5.6 Rebuild flush regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

4.5.7 Replace high-pressure relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

4.5.8 Change drive gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

4.6 Service the cylinder supply modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

4.6.1 Tightening procedure for high-pressure tube fittings . . . . . . . . . . . . . . . . . . . . . . 4-16

4.6.2 Replace primary regulator module (complete replacement) . . . . . . . . . . . . . . . 4-16

4.6.3 Replace cylinder inlet filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

4.6.4 Replace cylinder check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

4.6.5 Replace 4th- and 5th-gas cylinder supply module . . . . . . . . . . . . . . . . . . . . . . . 4-18

4.7 Service pipeline and cylinder pressure gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

4.7.1 Remove gauge panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

4.7.2 Replace pipeline or cylinder pressure gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

4.8 Replace system switch assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

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4.9 Service the flowmeter module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

4.9.1 Remove front flowmeter panel shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

4.9.2 Remove flowtubes for cleaning or replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

4.9.3 Remove complete flowmeter head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

4.9.4 Replace flowmeter modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

4.9.5 Replace flowmeter frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32

4.9.6 Replace O2 supply switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

4.9.7 Checkout procedure for O2 supply switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

4.9.8 Replace secondary regulator manifold or balance regulator manifold . . . . . . . 4-35

4.9.9 Replace O2 or N2O needle valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36

4.9.10 Replace 3rd or 4th gas needle valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38

4.10 Service vaporizer manifold parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

4.10.1 Repair manifold port valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

4.10.2 Checkout procedure for manifold port valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40

4.10.3 Replace vaporizer manifold check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41

4.10.4 Replace vaporizer pressure relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43

4.10.5 Replace vaporizer manifold (complete replacement) . . . . . . . . . . . . . . . . . . . . 4-44

4.11 Service common gas manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45

4.11.1 Replace common gas manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45

4.11.2 Replace common gas manifold check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46

4.11.3 Replace O2 flush switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47

4.12 Service the breathing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48

4.12.1 Replace control panel cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48

4.12.2 Replace control panel microswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49

4.12.3 Replace Bag-to-Vent toggle or microswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50

4.12.4 Replace adjustable pressure limiting (APL) knob assembly . . . . . . . . . . . . . . . 4-55

4.12.5 Replace APL disc or cage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-57

4.12.6 Replace airway pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58

4.12.7 Remove or replace canister and dishes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-59

4.12.8 Replace breathing system canister release handle and release mechanism . 4-59

4.12.9 Replace canister microswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-60

4.12.10 Remove the front and rear subfloors and the bulkhead cover . . . . . . . . . . . . 4-61

4.12.11 Replace circuit module identification printed circuit board (ID PCB) . . . . . . 4-62

4.12.12 Replace common gas outlet (CGO) assembly . . . . . . . . . . . . . . . . . . . . . . . . . 4-63

4.12.13 Remove the bulkhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63

4.12.14 Replace ACGO or ACGO microswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64

4.12.15 Disassemble ACGO to replace seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65

4.12.16 Replace sensor interface board (SIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67

4.13 CO2 Bypass repair procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69

4.13.1 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69

4.13.2 Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70

4.13.3 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70

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4.14 Service the breathing system with an articulating arm . . . . . . . . . . . . . . . . . . . . . . . . . 4-75

4.14.1 Removing the rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75

4.14.2 Latch adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75

4.14.3 Check/adjust tension of absorber arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75

4.15 Remove or replace drawer slides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76

4.15.1 Replace drawer lock assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-77

4.15.2 Remove or replace lower shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-78

4.15.3 Replace side panel for drawer enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-78

4.16 Replace O2 Flush components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-79

4.16.1 Replace O2 flush button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-79

4.16.2 Replace O2 flush valve block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-80

4.17 Replace auxiliary flowmeter or suction regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-81

4.18 Repair or replace display arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82

4.19 Display mount adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84

4.19.1 Standard mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84

4.19.2 Heavy duty mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84

4.20 Replace Front Casters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-86

4.21 Replace Back Casters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-88

4.22 Replace flip-up shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-89

4.23 Replace light package bulbs or panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-90

5 Installation and Maintenance

5.1 Aestiva/5 Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

5.2 Aestiva/5 Planned Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

5.2.1 Every six (6) months . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

5.2.2 Every twelve (12) months . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5

5.2.3 Every twenty-four (24) months . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

5.3 Lubricate absorber canister locking mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8

5.4 Dressing leaky seats in bellows pop-off and APL valve . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9

5.5 Auxiliary O2 flowmeter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5.6 Integrated Suction Regulator tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

5.7 Cleaning and inspecting the bag to ventilator toggle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

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6 Calibration

6.1 Primary Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

6.1.1 Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

6.1.2 Testing Primary Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3

6.1.3 Adjusting Primary Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

6.2 Secondary Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

6.2.1 Testing/Adjusting Secondary Regulators or Balance Regulators . . . . . . . . . . . . 6-16

6.3 Needle Valve Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

6.3.1 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

6.3.2 O2 Needle Valve Calibration (Minimum Flow) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

6.3.3 N2O, CO2, and Heliox Needle Valve Calibration (Minimum Flow) . . . . . . . . . . . . 6-19

6.3.4 Air Needle Valve Calibration (Minimum Flow) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

6.3.5 Needle Valve Calibration (Maximum Flow) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26

6.4 Link system calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27

6.5 O2 Flush Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32

6.6 Zero the pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34

6.6.1 Checking the pressure gauge accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35

6.7 O2 Supply Failure Alarm — Induction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36

7 Troubleshooting

7.1 General Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

7.2 Breathing System Leak Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

7.2.1 Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5

7.2.2 Breathing System Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6

7.2.3 Breathing system leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

7.2.4 Leak Isolation Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

8 Illustrated Parts

8.1 Service tools — Anesthesia machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

8.1.1 Secondary regulator pilot pressure tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5

8.2 Touch-up paint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6

8.3 Casters, brake, and work surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-7

8.4 Rear panel — upper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-8

8.5 Rear panel — lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9

8.6 Side panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

8.7 Upper shroud parts (lighting and bezel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

8.8 Compact/Induction Trolley label set and headframe parts . . . . . . . . . . . . . . . . . . . . . . . 8-13

8.9 Wall-rail mount label set and headframe parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14

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Table of Contents

8.10 Wall-rail mount wrapper components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15

8.11 Induction machine pneumatic components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16

8.12 Compact/Induction wall-rail mount components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17

8.13 Flush Button/Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18

8.14 AC inlets and Power cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19

8.14.1 AC Inlet Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20

8.15 Display folding mount —7900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22

8.16 Display folding mount — 7100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23

8.17 Display Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24

8.17.1 Arm parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24

8.17.2 Shoulder parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-26

8.17.3 Display mount parts (standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28

8.17.4 Display mount parts (heavy duty) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29

8.18 Cylinder Gas Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-30

8.18.1 Cylinder inlet fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31

8.19 Main manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-32

8.19.1 O2 flush regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-32

8.20 Pipeline inlet manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33

8.20.1 Pipeline inlet fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34

8.21 Power outlets and Heliox pipeline inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-35

8.22 Common gas manifold — for units with O2 Flush regulator . . . . . . . . . . . . . . . . . . . . . . 8-36

8.23 Common gas manifold — for units without O2 Flush regulator . . . . . . . . . . . . . . . . . . . 8-37

8.24 Pressure gauges and gauge panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38

8.24.1 Pressure gauge labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-39

8.25 Flowmeter components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-40

8.25.1 Flowtube parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-42

8.25.2 Secondary regulator components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-44

8.26 Vaporizer manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-46

8.27 Breathing System - service parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-48

8.27.1 Breathing System - user replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-50

8.27.2 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-56

8.27.3 Chassis Upper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-58

8.27.4 Bulkhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-60

8.27.5 Chassis Lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-62

8.27.6 Absorber (CO2) bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-63

8.27.7 Bag Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-64

8.27.8 Auxiliary common gas outlet (ACGO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-65

8.28 Anesthetic Gas Scavenging System — AGSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-66

8.28.1 Passive AGSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-66

8.28.2 Active AGSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-68

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8.29 Articulating Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-70

8.29.1 Support Column and Arm Assembly: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-70

8.29.2 Articulating arm accessory items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-72

8.30 Lower Shelve Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-74

8.30.1 Parts List for Shelf Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-74

8.31 Drawer and Shelf Accessory Mounting Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-76

8.32 Drawer, Standard 11 cm Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-77

8.33 Drawer, Optional 15 cm Non-locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-78

8.34 Flip up shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-79

8.35 Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-80

8.36 Legris quick-release fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-81

8.37 Tubing charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-82

8.37.1 Main manifold tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-82

8.37.2 Individual pipeline inlet manifold tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-84

8.37.3 2nd Cylinder (Air, N2O, O2) and CO2 or Heliox tubing . . . . . . . . . . . . . . . . . . . . 8-86

8.37.4 Copper tubing kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-87

8.37.5 Induction machine with pneumatic manifold . . . . . . . . . . . . . . . . . . . . . . . . . . 8-88

8.37.6 Induction machine with individual pipeline inlets . . . . . . . . . . . . . . . . . . . . . . . 8-90

8.37.7 Wall mount machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-92

8.37.8 Breathing System tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-94

8.38 Integrated Suction Regulator and Auxiliary O2 Flowmeter . . . . . . . . . . . . . . . . . . . . . . . 8-95

8.38.1 Major Components(vacuum suction) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-95

8.38.2 Suction Housing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-96

8.38.3 Regulator Assembly (3 mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-97

8.38.4 Rear-Panel Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-98

8.38.5 Auxiliary O2 Flowmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-99

8.38.6 Venturi Suction Housing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-100

8.38.7 Venturi Suction Regulator front view (2 mode) . . . . . . . . . . . . . . . . . . . . . . . . 8-101

8.38.8 Venturi Suction Regulator rear view (2 mode) . . . . . . . . . . . . . . . . . . . . . . . . . 8-102

8.39 Service parts for optional kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-103

8.39.1 Wall-rail cylinder mounting kit 1006-4657-000 . . . . . . . . . . . . . . . . . . . . . . . 8-103

8.39.2 ALM Pendant mounting kit 1006-8316-000 for wall-rail mount machines . 8-103

9 Schematics and Diagrams

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1 Introduction

In this section

This section provides a general overview of the Aestiva Anesthesia Machine.

1.1 What this manual includes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2 Standard service procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2.1 Operation manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2.2 Service manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.3 What is an Aestiva . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

1.4 Configuration options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

1.5 Symbols used in the manual or on the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

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1.1 What this manual includes

Anesthesia Machine

Ventilator

MRI Machine

This manual covers the service information for the Aestiva line of anesthesia machines. It covers the following components:

• gas delivery components,

• breathing system components,

• frame component (except those strictly associated with a specific ventilator).

The ventilators associated with the Aestiva machine have their own service manuals:

• for the Aestiva 7900 SmartVent see service manual 1006-0453-000,

• for the Aestiva 7100 Ventilator see service manual 1006-0836-000.

The Aestiva MRI Anesthesia Machine includes special components that allow it to operate in an MRI environment.

• for MRI related issues see the service manual supplement 1006-0858-000.

1.2 Standard service procedures

1.2.1 Operation manuals

You must have, and be familiar with, the operation manuals for this product. Refer to the Aestiva operation manuals if you need further information about the operation of the system.

1.2.2 Service manuals

You must determine where a problem is located before you can determine which service manual to use:

• Use this manual for machine and breathing system related issues.

• Use the appropriate Ventilator service manual for ventilator related issues.

• Use the MRI service manual supplement for MRI component issues.

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1.3 What is an Aestiva

1 Introduction

The Aestiva is a flexible anesthesia delivery machine. A wide selection of frames, gases, and vaporizers give the user full control of the system configuration.

Options include pendant mounted systems, extra gas cylinders or vaporizers, and left-hand (LH) or right-hand (RH) breathing systems (TNA).

Components Number of

2-Vap Trolley

3-Vap Trolley

Pendant

MRI

Compact

Compact wall-rail mount

Induction

Induction wall-rail mount

Ventilators and monitors

Number of gases Optional gases

vaporizers

22 or 3 Air or Heliox; CO

3 2, 3, or 4 Air, Heliox, CO2

22 or 3 Air or Heliox; CO

22 or 3 Air or CO

22 or 3

22 or 3 Air or CO

22 or 3

(

CO2 cylinder only

(up to two)

The machine can be configured with either of two microprocessor-controlled ventilators (7900 SmartVent or Aestiva 7100 Ventilator) that include monitoring of certain patient parameters.

Breathing

)

system and

ventilator display

mounting

Left or Right Up to 4

Left or Right Up to 5

Left or Right Up to 2

TNA Left;

7900 display

center

Air

Left Up to 4

Left Up to 2

None

(LH machine)

None

(LH machine)

Total number of

cylinders

2 per gas

(

maximum

)

Up to 4

Up to 2

The ventilators include communication software that can output patient data through a serial communications port.

Monitoring features can be further expanded with additional Datex-Ohmeda monitors.

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Aestiva Anesthesia Machine

1.4 Configuration options

Figures 1-1 and 1-2 show the front and rear views of the machine; Figure 1-3 shows breathing system components. There are some differences between models:

• Breathing systems can be on the left or right side. The part locations are the

Note:

Newer machine variants include individual pipeline inlet manifolds in place of the single pneumatic manifold used in previous production machines. The pipeline inlets are arranged in the same order for both the ANSI and ISO units.

• ANSI and ISO systems use the same pneumatic manifold rotated 180

• All models use the same relative cylinder positions with the O

• ANSI and ISO systems use the same flowhead assembly but the flowmeter

•Machines include active or passive gas scavenging.

• Options include an auxiliary common gas outlet (ACGO), different breathing

mirror image.

. Viewed from the rear, ANSI units have the pneumatic outlet on the right and ISO units have it on the left.

cylinder

farthest from the breathing system.

modules are in opposite order.

circuit modules (Circle and Bain/Mapleson D), a CO

(absorber) bypass, a

suction regulator and an auxiliary O2 flowmeter (in display arm), a folding mount display bracket in place of the display arm.

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1 Introduction

1. Brake

2. System switch

3. Pressure gauges (cylinder)

4. Pressure gauges (pipeline)

5. O

Flush

6. Flow controls

7. Light switch and connector

8. Ventilator display

9. Vaporizers

AA.96.054

Figure 1-1 • Aestiva with 7900 Ventilator (front view)

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Aestiva Anesthesia Machine

AA.96.053

1. Circuit breaker(Total outlet current)

2. Circuit breaker (mains inlet)

3. Pneumatic power outlet(O

— DISS or ISO)

4. Pipeline inlets

5. Cylinder connections

6. Outlet circuit breaker

7. Electrical outlet

8. Overflow safety trap (optional suction regulator)

Figure 1-2 • Aestiva (rear view)

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1 Introduction

6 5

AB.23.003

1. Canister release

2. Auxiliary common gas outlet — ACGO (optional)

3. ACGO switch

4. O

sensor

5. Flow sensor module

6. Circuit module

7. Bag arm

8. Bag/Vent switch

9. Bellows

10. Airway pressure gauge

11. APL valve

Figure 1-3 • Breathing system parts

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Aestiva Anesthesia Machine

1.5 Symbols used in the manual or on the equipment

Symbols replace words on the equipment, on the display, or in Datex-Ohmeda manuals. No one device or manual uses all of the symbols.

Warnings and Cautions tell you about dangerous conditions that can occur if you do not follow all instructions in this manual:

•Warnings tell about a condition that can cause injury to the operator or the patient.

• Cautions tell about a condition that can cause damage to the equipment.

Read and follow all warnings and cautions.

n M

†

On (power)

Alarm silence

Off (power) Alarm silence

Standby

Standby or preparatory state for part of the equipment

“ON” only for part of the equipment

“OFF” only for part of the equipment

Direct current

Alternating current

Type B equipment

Type BF equipment

Type CF equipment

Caution, ISO 7000-0434

Attention, refer to product instructions, IEC 60601-1

Dangerous voltage

1-8 09/06 1006-0452-000

Protective earth ground

Electrical input

Earth ground

Electrical output

Frame or chassis ground

Pneumatic input

Equipotential

Pneumatic output

1 Introduction

Plus, positive polarity

Minus, negative polarity

Variability

Variability in steps Read to center of float

Lamp, lighting, illumination

This way up

Pipeline

Lock

Movement in one direction

Movement in two directions

Read top of float

Vacuum inlet

Suction bottle outlet

Cylinder

Isolation transformer

U u

134°C

Unlock

Close drain

Drain (remove condensate)

Not autoclavable

Autoclavable

APL settings are approximate

O2+

Linkage system

Risk of Explosion.

Low pressure leak test

Mechanical ventilation

Bag position/ manual ventilation

O2 Flush button

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Aestiva Anesthesia Machine

< 414 kPa

< 345 kPa

Inspiratory flow

Expiratory flow

Inspiratory flow Expiratory flow

Pinch hazard Submenu

Circle breathing circuit module Bain/Mapleson D breathing circuit

module

The primary regulator is set to pressure less than 345 kPa (50 psi)

Absorber on

The primary regulator is set to pressure less than 414 kPa (60 psi)

CO2 Bypass Option

REF

EZchange Canister (CO2 bypass)

Absorber off (CO2 Bypass active)

No battery/battery failure Battery in use. Bar indicates amount of

battery power remaining.

Stock Number

Serial Number Caution: federal law prohibits dispensing

Authorized represent ative in the European Community

Manufacturer

MAX

Maximum

without prescription.

Systems with this mark agree with the European Council Directive (93/42/EEC) for Medical Devices when they are used as specified in their User’s Reference manuals. The xxxx is the certification number of the Notified Body used by Datex-Ohmeda’s Quality Systems.

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2 Theory of Operation

In this section 2.1 Theory overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2