Datex-Ohmeda Aespire View User manual

Aespire View

User’s Reference Manual

Software Revision 6.X

Datex-Ohmeda, Inc., a General Electric Company, doing business as GE Healthcare.

User Responsibility

This Product will perform in conformity with the description thereof
contained in this User’s Reference manual and accompanying labels
and/or inserts, when assembled, operated, maintained, and repaired
in accordance with the instructions provided. This Product must be
checked periodically. A defective Product should not be used. Parts
that are broken, missing, plainly worn, distorted, or contaminated
should be replaced immediately. Should repair or replacement
become necessary, Datex-Ohmeda recommends that a telephonic or
written request for service advice be made to the nearest
Datex-Ohmeda Customer Service Center. This Product or any of its
parts should not be repaired other than in accordance with written
instructions provided by Datex-Ohmeda and by Datex-Ohmeda
trained personnel. The Product must not be altered without the prior
written approval of Datex-Ohmeda. The user of this Product shall
have the sole responsibility for any malfunction which results from
improper use, faulty maintenance, improper repair, damage, or
alteration by anyone other than Datex-Ohmeda.

CAUTION U.S. Federal law restricts this device to sale by or on the

order of a licensed medical practitioner. Outside the
U.S.A., check local laws for any restriction that may apply.

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 AAAXX111111AA
The X represents an alpha

character indicating the year
the product was manufactured;

H = 2004, J = 2005, etc. I and
O are not used.

Aespire, 7900 Ventilator, Advanced Breathing System, Link-25,
ComWheel, Disposable Multi Absorber, EZchange, Reusable
Multi Absorber, PSVPro, SmartVent, Tec 6, and Tec 7 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.

The XX represents a number
indicating the year the product
was manufactured; 04 = 2004,

05 = 2005, etc.

1 Introduction

Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Symbols used in the manual or on the equipment . . . . . . . . 1-3

Typeface conventions used . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

2 System Controls and Menus

Anesthesia system controls . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Advanced breathing system (ABS) components . . . . . . . . . 2-5

Vaporizer controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

ACGO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Table of Contents

Optional ABS components . . . . . . . . . . . . . . . . . . . . . . . 2-7

Scavenging the ACGO sample flow . . . . . . . . . . . . . . . 2-11

3 Operation

Scavenging from an auxiliary manual breathing circuit 2-11

Scavenging a gas monitor sample flow . . . . . . . . . . . . 2-11

Ventilator controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Ventilator screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Using menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Turning on the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Start mechanical ventilation . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Start manual ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Ventilator setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Using quick keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Changing ventilator modes and settings . . . . . . . . . . . . 3-4

Alarm Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Setting volume alarms . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Alarm limit setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Setup/Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

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4 Preoperative Checkout

Screen and audio setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Cardiac Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Measure circuit compliance . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Pressure waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

EZchange canister (optional) . . . . . . . . . . . . . . . . . . . . . . . 3-10

Condenser (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Passive AGSS (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Connecting passive AGSS . . . . . . . . . . . . . . . . . . . . . . 3-12

Active AGSS (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Connecting active AGSS with a flow indicator . . . . . . . 3-14

Connecting active adjustable AGSS . . . . . . . . . . . . . . 3-15

Total flow sensing (optional) . . . . . . . . . . . . . . . . . . . . . . . 3-15

Every day before your first patient . . . . . . . . . . . . . . . . . . . . 4-2

5 Preoperative Tests

Before every patient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Inspect the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Power failure alarm test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Pipeline test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Total flow sensing test (if equipped) . . . . . . . . . . . . . . . . . . 5-3

Cylinder test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Flow control test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Vaporizer installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Vaporizer back pressure test . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Low-pressure leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Negative low-pressure leak test . . . . . . . . . . . . . . . . . . . 5-9

Positive low-pressure leak test . . . . . . . . . . . . . . . . . .5-10

Alarm tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Breathing system tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Bellows test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Breathing circuit test . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

APL valve test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Monitor and ventilator tests . . . . . . . . . . . . . . . . . . . . . . . . 5-15

ii M1132382

6 Alarms and Troubleshooting

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

List of alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Alarm ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Alarm tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Breathing system problems . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Electrical problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Pneumatic problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

7 User Maintenance

Table of Contents

Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Latching alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Minimum system shutdown and monitoring alarms . . . . 6-9

Repair policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Maintenance summary and schedule . . . . . . . . . . . . . . . . . 7-2

User maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Datex-Ohmeda approved service . . . . . . . . . . . . . . . . . 7-3

Breathing system maintenance . . . . . . . . . . . . . . . . . . . . . . 7-3

O2 cell replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

O2 cell calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

21% O2 cell calibration . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

100% O2 cell calibration . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Zeroing flow sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Prevent water buildup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

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8 Setup and Connections

Canister setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

When to change the absorbent . . . . . . . . . . . . . . . . . . . 8-6

Removing a canister . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Removing an EZchange canister . . . . . . . . . . . . . . . . . . 8-7

Reusable Multi Absorber canister filling . . . . . . . . . . . . . 8-7

Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Mains inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

Serial port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

Pneumatic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

Pipeline Inlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

Scavenging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

Sample gas return port . . . . . . . . . . . . . . . . . . . . . . . . 8-11

9 Parts

Suction regulator (optional) . . . . . . . . . . . . . . . . . . . . . 8-12

Auxiliary O2 flowmeter (optional) . . . . . . . . . . . . . . . . . 8-12

How to install gas cylinders . . . . . . . . . . . . . . . . . . . . . . . . 8-13

Pin indexed cylinder yokes . . . . . . . . . . . . . . . . . . . . .8-13

DIN cylinder connections . . . . . . . . . . . . . . . . . . . . . . . 8-13

High-pressure leak test . . . . . . . . . . . . . . . . . . . . . . . . 8-14

How to attach equipment to the top of the machine . . . . . . 8-14

Flow sensor module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Exhalation valve assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Breathing circuit module . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

Bellows assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Absorber canister . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

AGSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

EZchange canister system . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8

Test tools and system parts . . . . . . . . . . . . . . . . . . . . . . . . . 9-9

iv M1132382

10 Specifications and Theory of Operation

System pneumatic circuits . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Gas supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4

O2 flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4

N2O flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4

Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4

Mixed gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

EZchange canister . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

Pneumatic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

Gas supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

ACGO Port relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

Electrical block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Electrical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7

Table of Contents

Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8

Battery information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8

Flow specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-9

Pneumatic flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-9

Breathing system specifications . . . . . . . . . . . . . . . . . . . . 10-10

Gas scavenging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12

Environmental requirements . . . . . . . . . . . . . . . . . . . . . . 10-12

Suction regulators (optional) . . . . . . . . . . . . . . . . . . . . . . 10-13

Auxiliary O2 flowmeter (optional) . . . . . . . . . . . . . . . . . . . 10-13

Ventilator theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14

O2 monitoring theory of operation . . . . . . . . . . . . . . . 10-15

Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-15

Ventilator operating specifications . . . . . . . . . . . . . . . . . . 10-23

Pneumatics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-23

Fresh gas compensation . . . . . . . . . . . . . . . . . . . . . . 10-23

Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-23

Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-23

Oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-23

Ventilator accuracy data . . . . . . . . . . . . . . . . . . . . . . . . . 10-24

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Index

Warranty

Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . 10-26

Guidance and manufacturer’s declaration -

electromagnetic emissions . . . . . . . . . . . . . . . . . . . . . 10-26

Guidance and manufacturer’s declaration -

electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . 10-27

Recommended separation distances . . . . . . . . . . . . . 10-29

Electrical safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30

IEC 60601-1 Classification . . . . . . . . . . . . . . . . . . . . . . . . 10-31

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31

System components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-32

Integral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-32

Not integral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-32

vi M1132382

1 Introduction

In this section Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Symbols used in the manual or on the equipment . . . . . . . . 1-3

Typeface conventions used . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

M1132382 1-1

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Intended use

The Aespire anesthesia system is a compact, integrated, and intuitive
anesthesia delivery system. The 7900 Ventilator provides mechanical
ventilation for patients during surgery as well as monitoring and
displaying various patient parameters.

The 7900 Ventilator uses a microprocessor-controlled ventilator with
internal monitors, electronic PEEP, Volume Mode, and other optional
features. A serial interface permits communication to external
monitoring.

This anesthesia system is not suitable for use in an MRI environment.

This system must only be operated by medical personnel authorized
and trained to use this product. It must be operated according to the
instructions in this User’s Reference manual.

Note Configurations available for this product depend on local market and

standards requirements. Illustrations in this manual may not
represent all configurations of the product. This manual does not
cover the operation of every accessory. Refer to the accessory
documentation for further information.

1-2 M1132382

Symbols used in the manual or on the equipment

Symbols replace words on the equipment, on the display, or in
manuals.

Warnings and Cautions tell about the dangerous conditions that can
occur if the instructions in the manual are not followed.

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.

On (power) Off (power)

1 Introduction

Standby

Type BF equipment Type B equipment

Dangerous voltage Frame or chassis ground

Direct current Alternating current

Caution Attention, refer to product instructions

Refer to product instructions Exhaust

Electrical input Electrical output

Electrical input/output Sample gas inlet to scavenging

O2+

O2 flush button

Pneumatic inlet Pneumatic outlet

SN

M1132382 1-3

Serial number

REF

Stock number

Aespire View

Equipotential Lamp, lighting, illumination

Protective earth ground Earth ground

Variability Variability in steps

Suction bottle outlet Vacuum inlet

Max Vacuum

+

134°C

Plus, positive polarity

Bag position/manual ventilation Mechanical ventilation

Inspiratory flow Expiratory flow

Movement in one direction Movement in two directions

Lock Unlock

Isolation transformer Low pressure leak test

Autoclavable Not autoclavable

-

Minus, negative polarity

Bellows volumes are approximate

APL settings are approximate Anesthetic Gas Scavenging System

O2%

O2 cell connection

1-4 M1132382

Pinch hazard Read to top of float

1 Introduction

EZchange Canister (CO2 bypass) Caution: federal law prohibits dispensing

Open drain (remove liquid) Close drain

Alarm silence touch key Menu touch key

Silence alarm touch key (Tec 6) Volume alarms On/Off touch key

End case touch key Cylinder

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 GE Healthcare’s
Quality Systems.

Manufacturer Date of manufacture

without prescription

Authorized representative in the European
Community

Indicates that the waste of electrical and
electronic equipment must not be disposed
as unsorted municipal waste and must be
collected separately. Please contact an
authorized representative of Datex-Ohmeda
for information concerning the
decommissioning of equipment.

This way up

GOST R Russian certification

USB port

Ethernet connection This product consists of devices that

may contain mercury, which must be
recycled or disposed of in accordance
with local, state, or country laws. (Within
this system, the backlight lamps in the
monitor display contain mercury.

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Typeface conventions used

Menu items are written in bold italic typeface; for example, Main
Menu.

Messages that are displayed on the screen are enclosed in single
quotes: for example, ‘Total pressure exceeds Pmax.’

When referring to different sections and other documents, the names
are written in italic typeface and enclosed in double quotes; for
example, “System Controls and Menus.”

Abbreviations

Abbreviation Definition

A

ABS Advanced breathing system

ACGO Auxiliary common gas outlet

AGSS Anesthetic gas scavenging system

APL Adjustable pressure-limiting valve

C

CO2 Carbon dioxide

D

DAC Digital to analog converter

E

EMC Electromagnetic compatibility

ESD Electrostatic discharge

I:E Inspiratory-expiratory ratio

F

FiO2 Fraction of inspired oxygen

M

MIN Minimum

MV Minute volume

MVexp Expired minute volume

O

O2 Oxygen

1-6 M1132382

1 Introduction

P

Paw Patient airway pressure

PCV Pressure controlled ventilation

PCV-VG Pressure controlled ventilation - volume guaranteed

PEEP Positive end expiratory pressure

Pmax Maximum pressure

Pmean Average pressure calculated over the patient breath

Pinsp Target airway pressure

Ppause Positive airway pressure measured at the end of

Tpause

Ppeak Maximum airway pressure measured during patient

breath

Psupport Pressure support

PSVPro Pressure supported ventilation with apnea backup

R

RR Respiratory rate

S

SIMV-PC Synchronized intermittent mandatory ventilation -

pressure controlled

SIMV/PSV Synchronized intermittent mandatory ventilation /

pressure supported ventilation

T

TFS Total flow sensing

Tpause Pause time

Tinsp Inspired tidal volume

TV Tidal volume

TVexp Expired tidal volume

V

VCV Volume controlled ventilation

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1-8 M1132382

2 System Controls and Menus

WARNING Explosion Hazard. Do not use this system with flammable

anesthetic agents.

w Do not use antistatic or electrically-conductive breathing

tubes or masks. They can cause burns if used near high
frequency surgical equipment.

In this section Anesthesia system controls . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Advanced breathing system (ABS) components . . . . . . . . . 2-5

Vaporizer controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

ACGO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Ventilator controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Ventilator screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Using menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

M1132382 2-1

Aespire View

AC.20.002

1

2

13

11

10

9

8

4

3

5

6

7

12

Anesthesia system controls

1. Light switch 8. Brake

2. Dovetail rails 9. O2 flush button

3. Vaporizer 10. Auxiliary O2 flow control (optional)

4. Pipeline pressure gauge(s) (upper row) 11. Breathing system

5. Cylinder pressure gauge(s) (lower row) 12. Flow controls

6. System switch 13. Ventilator display

7. Integrated suction (optional)

Figure 2-1 • Front view

2-2 M1132382

2 System Controls and Menus

Item, Figure 2-1 Description

6 System switch Set the switch to the On (|) position to permit gas flow and to turn on the system.

7 Integrated suction

(optional)

8 Brake Push down to lock. Lift to release.

9 O2 flush button Push the O2 flush button to supply high flows of O2 to the breathing system.

10 Auxiliary O2 flow

control (optional)

Turn the switch to MAX for full vacuum. Turn the switch to Off (0) for no vacuum. Turn
the switch to On (|) for adjustable vacuum. When in adjustable vacuum, turn the knob
clockwise to increase the vacuum and counterclockwise to decrease the vacuum.

Turn the knob counterclockwise to increase the flow. Turn the knob clockwise to
decrease the flow.

12 Flow controls Turn the knob counterclockwise to increase the flow. Turn the knob clockwise to

decrease the flow. The System switch must be On for gas to flow

M1132382 2-3

.

Aespire View

1

2

4

5

7

8

AC.20.012

6

3

1. Outlet circuit breaker 5. Mains inlet

2. Electrical outlet 6. System circuit breaker

3. Suction items (optional) 7. Cylinder

4. Equipotential stud 8. Pipeline connections

Figure 2-2 • Rear view

2-4 M1132382

2 System Controls and Menus

AC.20.013

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

17

16

Advanced breathing system (ABS) components

1. Expiratory check valve 10. Breathing system release

2. Inspiratory check valve 11. Manual bag port

3. Auxiliary common gas outlet (ACGO) switch 12. Adjustable pressure-limiting (APL) valve

4. ACGO 13. Bag/Vent switch

5. Inspiratory flow sensor 14. Bellows assembly

6. Expiratory flow sensor 15. Sample gas return port

7. Absorber canister 16. Scavenger flow indicator (optional)

8. Absorber canister release 17. Airway pressure gauge

9. Leak test plug

Figure 2-3 • Advanced breathing system

M1132382 2-5

Aespire View

20

30

70

M

I

N

Item, Figure 2-3 Description

3 Auxiliary common gas outlet

(ACGO) switch

5,6 Inspiratory flow sensor and

Expiratory flow sensor

8 Absorber canister release Push to remove the canister. This causes the breathing system to vent to

Sends fresh gas to the ACGO when the switch is activated. The ACGO
provides fresh gas to an external manual breathing circuit.

Flow sensors provide volume measurements for some monitoring
functions and tidal volume delivery.

the room (unless the EZchange canister option is installed). Be sure to hold
the canister by the handle before releasing the canister.

12 Adjustable pressure-limiting

(APL) valve

Adjusts breathing system pressure limit during manual ventilation. The
scale shows approximate pressures. Above 30 cmH2O, the knob will click
as it turns.

13 Bag/Vent switch Selects between manual ventilation (bag) or mechanical ventilation

(ventilator).

2-6 M1132382

Optional ABS

AB.82.043

AB.74.120

1

2

3

4

5

components

2 System Controls and Menus

1. Bag support arm

2. EZchange canister system (CO2 bypass)

3. EZchange canister release

4. Condenser drain button

5. Condenser

Figure 2-4 • Breathing system options

Item, Figure 2-4 Description

1 Bag support arm Squeeze the button to raise or lower the arm.

3 EZchange canister

release

4 Condenser drain button Push to drain water out of the condenser.

Push to drop the canister to EZchange position. This seals the breathing circuit,
permitting continued ventilation and rebreathing of exhaled gases. Be sure to
hold the canister by the handle before releasing the canister.

M1132382 2-7

Aespire View

2

1

3

4

5

6

AA43051

AB.80.009

4

3

Vaporizer controls

Refer to the vaporizer User’s Reference manual for more detailed
information on the vaporizer.

1. Tec 6 series

2. Tec 7

3. Lock lever

4. Concentration control and release

5. Indicators (Tec 6 series)

6. Silence alarm touch key (Tec 6 series)

Figure 2-5 • Vaporizer controls

2-8 M1132382

2 System Controls and Menus

Åben

Item, Figure 2-5 Description

3 Lock Lever Turn the lever fully clockwise to lock the vaporizer in position.

4 Concentration control and

release

Push the release and turn the concentration control to set the agent
concentration. The Tec 6 series concentration control does not turn as long
as the warm-up indicator is on.

5 Indicators (Tec 6 series) All indictors come on briefly at the start. The warm-up indicator goes off

after approximately 10 minutes and the operational indicator comes on.
Other indicators come on to advise the user of required action.

6 Silence alarm touch key

(Tec 6 series)

Push to silence alarms. Hold for 4 seconds to sound the speaker and light
all indicators (alarm test).

M1132382 2-9

Aespire View

ACGO

Fresh gas flow with anesthetic agent is directed through the Auxiliary
Common Gas Outlet (ACGO) on the front of the system when the
ACGO switch is in the ACGO position. Mechanical ventilation is not
available when operating an auxiliary manual breathing circuit with
fresh gas from the ACGO. The Bag/Vent switch, APL valve, and bag
arm are not part of the external circuit. Volume and pressure
monitoring are not available.

O2 monitoring of fresh gas is available automatically when the ACGO
is selected. A sample of the fresh gas is diverted to the O2 cell in the
breathing system. The sample flow to the O2 cell is dependent on the
pressure in the external circuit. The sample flow reduces the fresh
gas flow rate to the auxiliary breathing circuit equal to the amount
delivered to the O2 cell.

Fresh gas oxygen concentration is displayed on the screen. Set the
alarm limits appropriately. Note that fresh gas oxygen concentration
may not reflect FiO2 during spontaneous breathing or in rebreathing
circuits.

Important Use an external O2 monitor if using a rebreathing circuit on ACGO.

Do not use an external ventilator on the ACGO. Do not use the ACGO
to drive external ventilators or for jet ventilation.

See “Scavenging” in the “Setup and Connections” section for more
information on connections.

WARNING The maximum pressure at the ACGO can be up to 55 kPa

(8 psi). Use a breathing circuit with pressure relief.

2-10 M1132382

2 System Controls and Menus

Scavenging the

ACGO sample flow

A sample of the fresh gas is diverted to the O2 cell in the breathing
system to show the O2 numerics on the monitor display. This sample
flow should be scavenged when an auxiliary manual breathing circuit
is used with N2O or volatile anesthetics.

If scavenging is not connected, the sample flow is emptied into the
room.

To connect the scavenging:

1. Attach a circle breathing circuit to the inspiratory and expiratory
ports.

2. Occlude the circle circuit by connecting the Y-piece to the plug
located to the rear of the expiratory port.

3. Check for clinically correct settings.

4. Check the position of the Bag/Vent switch:

• If the Bag/Vent switch is set to mechanical ventilation mode,

the bellows fills slowly with the sample flow. When the
bellows is full, the sample flow goes to the AGSS
(Mechanical ventilation does not start when ACGO switch is
set to ACGO).

• If the Bag/Vent switch is set to bag mode, set the APL valve

to MIN and attach a bag. The bag fills slowly with the sample
flow. When the bag is full, the sample flow goes to the AGSS.

Scavenging from an

auxiliary manual
breathing circuit

Important Do not use these connectors as an outlet for exhaust flow.

Scavenging a gas

monitor sample flow

Scavenge the exhaust if an auxiliary manual breathing circuit is used
with N2O or volatile anesthetics.

An auxiliary inlet is available for active and passive AGSS units. It
provides a female connection with 30 mm male - 30 mm male
connector (or a 30 mm male - 19 mm male connector) into the
auxiliary port under the breathing system.

The auxiliary inlet is a convenience inlet to the air brake of active
AGSS units. There is a reservoir to capture exhaust flows higher than
the extract flow.

A separate exhaust hose is needed from the auxiliary manual
breathing circuit to the disposal point for all AGSS units.

Sample gas from a gas monitor can be scavenged using the sample
gas return port or the AGSS. To scavenge from a gas monitor using
the sample gas return port, connect the tubing from the monitor to the
sample gas return port. To scavenge from a gas monitor using the
AGSS, connect tubing from the monitor to the male luer inlet on the
bottom of the AGSS underneath the breathing system.

M1132382 2-11

Aespire View

2

3

4

5

6

789

10

11

12

13

14

AC.20.003

1

Ventilator controls

The ventilator controls include touch keys, menu screens, and a
control knob (ComWheel). The System switch provides power
functions to the ventilator display. The Bag/Vent switch starts and
stops mechanical ventilation.

1. High priority alarm indicator 8. PEEP quick key

2. Low or medium priority alarm indicator 9. Pmax or Psupport quick key

3. Alarm silence key 10. I:E or Tinsp quick key

4. Menu key 11. Respiratory rate (RR) quick key

5. End case key 12. Tidal volume (TV) or Pinsp quick key

6. ComWheel 13. Mains power indicator

7. More settings quick key 14. Volume alarms On/Off key

Figure 2-6 • Ventilator controls

2-12 M1132382

Ventilator screen

AC.20.004

Total

TV

ml

Vent On

RR

/min

I:E Pmax

cmH2O

PEEP

cmH2O

More

Settings

VCV - Volume Control

Circle

Fresh Gas Flow

l/min

O2

Air

N2O

Push the knob to confirm the change. Turn the
knob to change the setting.

Time (sec)

Paw

O2% low

Ppeak

Pmean

Ppause

O2

%

TVexp

ml

MV

l/min

RR

/min

cmH2O

TVexp low

1

2

5

6

7

8

9

10

11

4

3

2 System Controls and Menus

1. Alarm silence indicator and countdown clock 7. Total flow sensing (optional)

2. Alarm message areas 8. Ventilator settings

3. Waveform area 9. Mechanical ventilation status

4. Alarm limit settings 10. Ventilation mode

5. Measured values area 11. User message area

6. Circuit type

Figure 2-7 • Normal view

M1132382 2-13

Aespire View

TV

ml

Vent On

RR

/min

I:E Pmax

cmH2O

PEEP

cmH2O

More

Settings

VCV - Volume Control

Circle

Time (sec)

Ppeak

Pmean

Ppause

O2

%

TVexp

ml

MV

l/min

RR

/min

cmH2O

Main Menu

Ventilation Mode

Alarm Setup

Setup/Calibration

Screen and Audio Setup

Cardiac Bypass

Normal Screen

VCV

PCV

SIMV/PSV

PSVPro

SIMV-PC

AC.20.009

Using menus

Figure 2-8 • Menu example

1. Push the Menu key to show the Main Menu.

2. Turn the ComWheel counterclockwise to highlight the next menu
item. Turn the ComWheel clockwise to highlight the previous
menu item.

3. Push the ComWheel to enter the highlighted window or a sub
menu.

4. Turn the ComWheel clockwise or counterclockwise to highlight
the desired selection.

5. Push the ComWheel to confirm the selection.

6. Push the Menu key to exit the menu and return to the normal
monitoring screen.

2-14 M1132382

3 Operation

WARNING Maintain sufficient fresh gas flow when using sevoflurane.

In this section Turning on the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Start mechanical ventilation . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Start manual ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Ventilator setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Alarm Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Setup/Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Screen and audio setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Cardiac Bypass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Measure circuit compliance . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Pressure waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

EZchange canister (optional) . . . . . . . . . . . . . . . . . . . . . . . 3-10

Condenser (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Passive AGSS (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Active AGSS (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Total flow sensing (optional) . . . . . . . . . . . . . . . . . . . . . . . . 3-15

M1132382 3-1

Aespire View

Turning on the system

1. Plug the power cord into an electrical outlet. Make sure the
system circuit breaker is on.

• The mains indicator comes on when AC power is connected.

• The battery is charging if not already fully charged.

2. Check that the breathing system is properly connected.

CAUTION Do not turn on the system with the right-hand (inspiratory)

port plugged.

3. Turn the System switch to On.

• The display shows the power-up screen.

• The system does a series of automated self tests.

• A status bar is provided to show progress.

Start mechanical ventilation

WARNING Make sure that the patient circuit is correctly assembled

and that the ventilator settings are clinically appropriate
before starting ventilation.

1. Set the ACGO switch to the circle system position.

2. Set the Bag/Vent switch.

3. Push the O2 flush button to inflate the bellows if needed.

Start manual ventilation

1. Connect a manual breathing circuit.

2. Make sure that the APL valve is set to a clinically appropriate

3. Set the Bag/Vent switch to Bag.

• If Bag/Vent switch is set to Vent, move Bag/Vent switch to

Bag and then back to Vent to start mechanical ventilation.

• If Bag/Vent switch is set to Bag, move Bag/Vent switch to

Vent to start mechanical ventilation.

setting.

3-2 M1132382

Ventilator setup

3 Operation

The system has the following mechanical ventilation modes:

• Volume Control Ventilation (VCV).
The ventilator delivers the tidal volume to the patient at the set
respiratory rate (RR).

• Pressure Control Ventilation (PCV) (optional).
The airway pressure is controlled to the value of Pinsp in every
breath.

• Synchronized Intermittent Mandatory Ventilation with Pressure
Support Ventilation (SIMV/PSV) (optional).
Sets a minimum number of mechanical breaths using volume
control to be delivered to the patient, but allows the patient to
have spontaneous breaths which can be pressure supported.

• Pressure Support Ventilation (PSVPro) (optional).
This is a spontaneous mode that provides the set amount of
pressure to the patient during each triggered breath or, if the
patient does not have any spontaneous breaths in a set period of
time, the ventilator transitions to SIMV-PC where it delivers a
minimum number of mechanically controlled breaths.

• Synchronized Intermittent Mandatory Ventilation with Pressure
Control (SIMV-PC) (optional).
Sets a minimum number of mechanical breaths using pressure
control to be delivered to the patient, but allows the patient to
have spontaneous breaths which can be pressure supported.

• Pressure Control Ventilation-Volume Guaranteed (PCV-VG)
(optional).
A tidal volume is set and the ventilator delivers that volume using
a decelerating flow and a constant pressure. The ventilator
adjusts the inspiratory pressure needed to deliver the set tidal
volume breath-by-breath so that the lowest pressure is used.

Note See the “Specifications and Theory of Operation” section for more

information on ventilation modes.

Using quick keys The ventilator settings for each mode can be easily changed using

the ventilator quick keys.

1. Push a ventilator quick key to select the corresponding ventilator
setting.

2. Turn the ComWheel to make a change.

3. Push the ComWheel or quick key to activate (confirm) the
change.

M1132382 3-3

Aespire View

Changing ventilator modes and settings

1. Push the Menu key.

2. Select Ventilation Mode from the Main Menu.

Main Menu

Ventilation Mode VCV

Alarm Setup PCV

Setup/Calibration SIMV/PSV

Screen and Audio Setup

Cardiac Bypass Off SIMV-PC

Normal Screen

PSVPro

PCV-VG

3. Use the ComWheel to highlight the desired setting (PSVPro
shown), and push the ComWheel to confirm the change.

4. Set the values for the selected ventilation mode.

• The value is highlighted while being set.

5. Push the ComWheel or the quick key to activate the change.

• The system returns to the normal monitoring screen.

• The ventilation mode shows on the screen.

3-4 M1132382

Alarm Setup

3 Operation

Setting volume

alarms

Use the volume alarms key to turn the volume alarms on and off.
When the alarms are off, an X covers the alarm limits. Use this control
during manual ventilation when constant attention is on the patient.

Use the End case key to minimize alarms between cases. The alarms
will reactivate when two or more breaths are detected within 30
seconds.

WARNING Do not turn off volume alarms for a spontaneously

breathing patient. The system will not alarm for low
volume.

Alarm limit setup To set or change alarm limits:

1. Push the Menu key.

2. Select Alarm Setup from the Main Menu.

Alarm Setup

O2 21 99

MV 3.0 7.0

TVexp 200 600

Leak Audio On

Go to Main Menu

3. To set an alarm limit, use the ComWheel to scroll to the desired
alarm limit. Push the ComWheel to select the limit. The following
alarm limits can be set or changed:

• O2, MV, and TVexp - Alarm limits for both high and low can

be set. The low limit is the left numeric field, and the high limit
is the right numeric field.

• Leak Audio - The patient circuit leak alarm activates during

mechanical ventilation if less than half of the inspired volume
returns through the expiratory flow sensor. Prevent expected
alarms from known circuit leaks by setting the Leak Audio to
Off.

4. Change the value with the ComWheel.

5. Select Go to Main Menu to return to the Main Menu, or push the
Menu key to return to the normal monitoring screen.

M1132382 3-5

Aespire View

Setup/Calibration

Note See the “Specifications and Theory of Operation” section for more

To change or enter Setup and Calibration information:

1. Push the Menu key.

2. Select Setup/Calibration from the Main Menu.

Setup/Calibration

More Vent Settings

O2 Sensor Calibration

About Ventilator...

Go to Main Menu

3. Use the ComWheel to scroll to the desired submenu. Push the
ComWheel to confirm the selection. Select More Vent Settings
to set the following ventilator values:

•Pmax.

• Trig Window.

• Trigger.

• End of Breath.

• Backup Mode Active.

• Tpause.

• Rise Rate.

information on individual settings.

4. After selecting a ventilator setting, set it to the desired value by
turning the ComWheel. Confirm the value is correct by pushing
the ComWheel.

5. Select Go to Setup/Calibration Menu to return to the
Setup/Calibration, or push the Menu key to return to the normal
monitoring screen.

3-6 M1132382

Screen and audio setup

To change the audio and visual appearance of the screen:

1. Push the Menu key.

2. Select Screen and Audio Setup from the Main Menu.

Screen and Audio Setup

Brightness 5

Alarm Volume 4

Alarm Limits Show

Units of Measure Show

Go to Main Menu

3. Use the ComWheel to select the desired setting and push the

3 Operation

ComWheel to confirm the change. The following settings are
available:

• Brightness - Sets the brightness of the screen.

• Alarm Volume - Sets the volume, or loudness of audible

alarms.

• Alarm Limits - Simplifies the screen by hiding the alarm limits.

To do this, select Hide for this option. If the screen is set to
hide the alarm limits, the limits automatically show when the
corresponding alarm occurs.

• Units of Measure - Simplifies the screen by hiding the units of

measure. To do this, select Hide for this option.

4. Select Go to Main Menu to return to the Main Menu, or push the
Menu key to return to the normal monitoring screen.

M1132382 3-7

Aespire View

Cardiac Bypass

WARNING Cardiac Bypass mode should only be used when the

Cardiac Bypass suspends alarms for patients on cardiac bypass
when the ventilator is not mechanically ventilating. Mechanical
ventilation must be off. When mechanical ventilation is turned on,
Cardiac Bypass is automatically turned off, the alarms are enabled,
and monitoring is available.

patient is receiving extra-corporeal oxygenation by means
of a heart-lung machine. This mode of ventilation is not
intended to provide metabolic levels of ventilation to the
patient.

1. Set the Bag/Vent switch to Bag.

2. Push the Menu key.

3. Select Cardiac Bypass.

4. Set Cardiac Bypass to On.

5. Push the ComWheel to activate the change.

• The screens shows ‘Cardiac bypass’ and ‘Apnea alarm off’ in

the alarm area.

6. Select Go to Main Menu to return to the Main Menu, or push the
Menu key to return to the normal monitoring screen.

3-8 M1132382

Measure circuit compliance

Exhaled tidal volume (TVexp) measures the gas needed to fill the
patient circuit at the measured pressure. The compliance factor can
be used to calculate the approximate gas which goes into expanding
the compliant patient tubing and not delivered into the patient.

1. Set the ventilator to volume control ventilation (VCV) mode.

2. Set the ventilator parameters.

•TV = 25 ml.

• RR = 20.

•I:E = 1:1.

• Pmax = 100 cmH2O.

• PEEP = Off.

3. Occlude the patient Y.

4. Turn on mechanical ventilation.

5. Monitor the exhaled tidal volume (TVexp) and the measured peak
airway pressure (Ppeak).

6. Calculate the tubing compliance factor.

• TVexp/(Ppeak - 2.5* cmH2O) = Compliance factor in

ml/cmH2O.

• Example:

— Ppeak = 30 cmH2O.
— TVexp = 25 ml.
— 25/(30 - 2.5) = 0.9 ml/cmH2O.

*Pressure created by the force of the bellows.

3 Operation

Pressure waveform

Note See the “Specifications and Theory of Operation” section for more

The pressure waveform shows the measured value of the airway
pressure. The waveform automatically adjusts the time and pressure
scales. The time scale changes with the respiratory rate. The
pressure scale changes with the pressure limit.

waveform information on the ventilation modes.

Respiratory Rate (breaths per minute) Time scale (seconds)

0 to 25 0 to 16
26 to 75 0 to 8
76 to 100 0 to 4

M1132382 3-9

Aespire View

AB.82.042

AB.74p.043

EZchange canister (optional)

Push the absorber canister release to activate the EZchange canister
mode. The canister will swing down to the EZchange position. The
EZchange canister mode seals the breathing circuit when the canister
holder is down. This permits continued ventilation and rebreathing of
exhaled gases while replacing the absorber canister.

Systems with EZchange canister have the following label on the
canister holder. When the system is in EZchange position, the
message ‘No CO2 absorption’ shows on the ventilator display.

To return to absorber mode, reinsert the canister into the holder, push
the canister back up and snap it into absorber position. When the
canister is in the absorber position, the exhaled gas flows through the
absorber, removing CO2.

Note Check the absorber canister to ensure it has side rails. If the canister

does not have side rails, it will not work on the EZchange canister
holder.

3-10 M1132382

Condenser (optional)

12

3

AB.75p080

3 Operation

Visually check the condenser reservoir daily. Drain the reservoir daily.

1. Place a container under the reservoir.

2. Push the drain button to empty any water in the condenser.

1. Drain button

2. Reservoir

3. Condenser

Figure 3-1 • Condenser

M1132382 3-11

Aespire View

Passive AGSS (optional)

WARNING Always verify the proper operation of any gas scavenging

system; ensure the scavenging system is not occluded.

The passive AGSS (Anesthesia Gas Scavenging System) contains
both positive and negative pressure relief valves to protect the
breathing system and the patient. The outlet is a 30-mm connector on
the bottom of the receiver.

There is also a connector that may be used for scavenging the
sample from a gas monitor. The male luer inlet connection is located
near the 30-mm connector.

Passive AGSS is intended primarily for use in operating room
environments which have no active gas extraction system for waste
gas disposal. The disposal system generally consists of large
diameter tubing directly linking the passive AGSS with the building
exterior. The tubing should be as large in diameter and as short as
possible for the particular application.

Passive AGSS may also be used with a non-recirculating facility
ventilation system for waste gas disposal. The tubing connection from
passive AGSS to the non-recirculating facility ventilation system
should be an open connection, essentially at atmospheric pressure,
such as to an exhaust grill.

Note See “Setup and Connections” for additional scavenging connection

information.

Connecting passive

AGSS

Note The tubing connection from the passive AGSS to the non-circulating

Note In the event that excess gas accumulates in the scavenging system

To use the optional passive AGSS installed on the system, connect it
as follows:

1. Connect the proper large diameter tubing to the AGSS 30 mm
outlet connector on the bottom of the AGSS underneath the
breathing system.

facility ventilation system should be an open connection, essentially
an atmospheric pressure, such as to an exhaust grill.

2. Connect the free end of the tubing to the building exterior or
outside ventilation system.

3. The passive scavenging system relies on slight positive pressure
of gases, or on slight negative pressure caused by an exhaust
fan, to move gases through the system. For this reason, all
unused ports must be capped to prevent gas from leaking into the
room and to maintain the expected pressures.

and cannot exit the machine properly, pressure could build. If this
pressure reaches 10cmH20, the brass weight of the positive relief
valve will be lifted up allowing the gas to escape into the room. This
prevents the pressure from backing up into the patient circuit.

3-12 M1132382

Active AGSS (optional)

WARNING Always verify the proper operation of any gas scavenging

system; ensure the scavenging system is not occluded.

There are several versions of the optional active AGSS (Anesthesia
Gas Scavenging System) available depending on the hospital’s type
of waste gas disposal system.

Each version has a two-liter reservoir to capture peak exhaust flows
that briefly exceed the extract flow. Active scavenging systems
contain two relief valves to protect the patient from excess gas
pressure, or from the opposite situation, gas being drawn from the
breathing circuit.

The positive relief valve for the scavenging system is mounted on the
exhalation valve assembly. In the event that excess gas accumulates
in the scavenging system and cannot exit the machine properly,
pressure could build. If this pressure reaches 10 cmH2O, the positive
relief valve will be lifted up, allowing gas to escape into the room. This
prevents the pressure from backing up into the patient circuit.

3 Operation

The negative relief valve (which is located in the same place on all
scavenging receivers) serves to protect the patient in the event that
the extract flow exceeds system input flow. That is, it prevents gas
from being pulled out of the breathing circuit. If more than a small
amount of negative pressure (-0.3 cmH2O) is applied to the
scavenging system, the negative relief valve opens, allowing room air
to be drawn into the scavenging system instead of pulling gas from
the patient circuit. Its effectiveness is limited by the extract flow of the
particular active AGSS device:

• The active low flow system is for use with high vacuum disposal
systems. It requires a vacuum system capable of a continuous
nominal flow of 36 l/min and 300 mmHg (12 inHg) or greater
vacuum pressure. A flow indicator on the system indicates when
the unit is in operation.

• The active high flow system is for use with low vacuum (blower
type) disposal systems. This requires a system capable of
providing 50 to 80 l/min extract flow. A flow indicator on the
system indicates when the unit is in operation.

• Another version is the active adjustable flow. It provides the
capability to adjust the flow with a needle valve (located in a
receiver beneath the breathing system) and a visual indicator bag
which should be properly inflated. It requires a vacuum system
capable of a continuous nominal flow of 36 l/min and 300 mmHg
(12 inHg) or greater vacuum pressure. The extract flow is limited
to 36 l/min and 300 mmHg (12 inHg) vacuum.

• The active low flow system with a 12.7 mm hose barb connector
is for use with a low vacuum disposal system. It requires an
external venturi/ejector system with a flowmeter and a minimum
36 l/min extract flow.

M1132382 3-13

Aespire View

• The active low flow system with a 25 mm barb connector is for
use with low vacuum disposal systems. It requires an external
venturi/ejector system with a 40 to 50 l/min extract flow. A flow
indicator on the system indicates when the unit is in operation.

• The active low flow system with 30-mm ISO taper is for use with
low vacuum disposal systems. It requires an external venturi/
ejector system with a 40 to 50 l/min extract flow. A flow indicator
on the system indicates when the unit is in operation.

See “Setup and Connections” for additional scavenging connection
information.

Connecting active

AGSS with a flow

indicator

Note The ball in the upper red zone indicates excessively high extraction

To use the optional active AGSS on a system that has a flow
indicator, connect it as follows:

1. Connect the proper hose to the AGSS outlet connector on the
bottom of the AGSS, beneath the breathing system. Attach the
other end to the hospital disposal system.

2. With the AGSS operating, verify that the flow indicator ball on the
flow indicator rises to the green zone, indicating adequate flow.

flow. The ball in the lower red zone indicates extraction flow rate is
too low or the filter is blocked.

3. Complete the tests in the “Preoperative Tests” section of this
manual.

3-14 M1132382

3 Operation

AB.75p.110

Connecting active

adjustable AGSS

The active adjustable AGSS option flow rate is limited to 30 l/min with
this option.

To use the optional active AGSS installed on the system which uses
the three-liter bag as a visual indicator, connect it as follows:

1. Connect a disposal hose to the DISS connector on the needle
valve on the bottom of the AGSS (beneath). The hose should be
flexible and reinforced to help prevent kinking and crushing.

2. Attach the other end of the hose to the hospital disposal system.

3. Attach the three-liter bag to the 30-mm auxiliary 1 port on the
bottom of the AGSS.

4. Use the needle valve to adjust the flow rate to match the amount
of gas being scavenged. Use the visual indicator bag when
adjusting the flow rate. The bag should remain partially inflated.

5. Complete the tests in the “Preoperative Tests” section of this
manual.

Total flow sensing (optional)

The total flow sensing (TFS) option electronically measures the fresh
gas flow at the mechanical flow tubes. The total fresh gas flow
measurement displays on the bottom right corner of the screen. The
measurement specifies:

• Total gas flow.

• O2 gas flow.

• Air gas flow.

• N2O gas flow.

M1132382 3-15

Aespire View

3-16 M1132382

4 Preoperative Checkout

WARNING Read each component’s User’s Reference manual and

understand the following before using this system:

• All system connections.

• All warnings and cautions.

• How to use each system component.

• How to test each system component.

w Before using this system:

• Complete the preoperative checkout.

• For in-depth test instructions, see the “Preoperative
Tests” section.

• Test all other system components.

w If a test fails, do not use the equipment.

Have a Datex-Ohmeda trained service representative
repair the equipment.

In this section Every day before your first patient . . . . . . . . . . . . . . . . . . . . 4-2

Before every patient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

M1132382 4-1

Aespire View

Every day before your first patient

 Check that necessary emergency equipment is available and in good

condition.

 Check that the equipment is not damaged and that components are

correctly attached.

 Check that pipeline gas supplies are connected and cylinders are

installed and adequately filled.

 Check the system suction connections.

 Check the vaporizer installation:

• The top of each vaporizer is horizontal (not on crooked).

• Each vaporizer is locked and cannot be removed.

• The alarms and indicators operate correctly (Tec 6 series
vaporizers).

• More than one vaporizer cannot be turned on at the same time.

• All vaporizers are full.

 Check that the breathing circuit is correctly connected, not damaged,

and the breathing system contains sufficient absorbent.

 Turn the System switch to On.

 Connect the scavenging and verify proper operation.

 Do the Pipeline test and Cylinders test.

 Do the Flow control tests.

 Do the Vaporizer back pressure tests.

 Do a Low-pressure leak test.

 Do the Alarm tests.

 Do the Breathing system tests.

 Set the appropriate controls and alarm limits for the case.

4-2 M1132382

Before every patient

Note This check does not need to be done before the first case of the day if

 Check that necessary emergency equipment is available and in good

 Check the vaporizer installation:

 Do the Breathing system tests.

4 Preoperative Checkout

the “Every day before your first patient” check was done.

condition.

• The top of each vaporizer is horizontal (not on crooked).

• Each vaporizer is locked and cannot be removed.

• The alarms and indicators operate correctly (Tec 6 series
vaporizers).

• More than one vaporizer cannot be turned on at the same time.

• All vaporizers are full.

 Set the appropriate controls and alarm limits for the case.

M1132382 4-3

Aespire View

4-4 M1132382

5 Preoperative Tests

In this section Inspect the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Power failure alarm test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Pipeline test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Total flow sensing test (if equipped) . . . . . . . . . . . . . . . . . . . 5-3

Cylinder test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Flow control test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Vaporizer installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Vaporizer back pressure test . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Low-pressure leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Alarm tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Breathing system tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Monitor and ventilator tests. . . . . . . . . . . . . . . . . . . . . . . . . 5-15

M1132382 5-1

Aespire View

Inspect the system

WARNING Do not exceed the top shelf weight limit of 34 kg (75 lb).

w Make sure that the breathing circuit is correctly connected

w Do not leave gas cylinder valves open if the pipeline

and not damaged. Replace the breathing circuit if it is
damaged.

supply is in use. Cylinder supplies could be depleted,
leaving an insufficient reserve supply in case of pipeline
failure.

Before using the system, make sure that:

• The equipment is not damaged.

• Components are correctly attached.

• The breathing circuit is correctly connected, not damaged, and
the breathing system contains sufficient absorbent.

• The vaporizers are locked in position and contain sufficient agent.

• Pipeline gas supplies are connected and the pressures are
correct.

• Cylinder valves are closed on models with cylinder supplies.

• Models with cylinder supplies have a cylinder wrench attached to
the system.

• Models with cylinder supplies have a reserve supply of O2
connected to the machine during system checkout.

• The necessary emergency equipment is available and in good
condition.

• Equipment for airway maintenance, manual ventilation, tracheal
intubation, and IV administration is available and in good
condition.

• Applicable anesthetic and emergency drugs are available.

• If an auxiliary O2 flowmeter is present, ensure there is adequate
flow.

• If an optional suction regulator is present, ensure proper
connections and that there is adequate suction.

• The brakes are set and prevent movement.

• The power cord is connected to a wall outlet. The mains indicator
comes on when AC power is connected. If the indicator is not on,
the system does not have mains (electrical) power. Use a
different outlet, close the circuit breaker, or replace or connect the
power cable.

• The O2 flush button is in working condition.

5-2 M1132382

Power failure alarm test

1. With the System switch set to On, unplug the power cord.

2. Make sure that the power failure alarm sounds.

3. Connect the power cord to the electrical outlet.

4. Verify that the alarm tone stops.

Pipeline test

1. Disconnect the pipeline supplies and close all cylinder valves.

2. If the pipeline and cylinder pressure gauges are not at zero.

3. Connect the pipeline supplies.

4. Verify the pipeline pressure is between 280-600 kPa (41-87 psi).

5 Preoperative Tests

• Connect an O2 supply.

• Set the System switch to On.

• Set the flow controls to mid range.

• Make sure that all of the gauges except for O2 go to zero.

• Disconnect the O2 supply.

• Make sure that the O2 gauge goes to zero. As the pressure

decreases, the alarms for O2 supply failure should occur.

Total flow sensing test (if equipped)

1. Connect the pipeline supplies to the anesthesia system.

2. Set the System switch to On.

3. Set the Bag/Vent switch to Bag.

4. Set each gas flow to 0.80 l/min using flow tubes. Refer to “Flow
controls” for more information.

5. Verify that the flow readings on the display for each gas read
between 0.60 l/min and 1.0 l/min.

M1132382 5-3

Aespire View

Cylinder test

WARNING Do not leave gas cylinder valves open if the pipeline

CAUTION To prevent damage to the system, open the cylinder

valves slowly and do not force the flow controls.

supply is in use. Cylinder supplies could be depleted,
leaving an insufficient reserve supply in case of pipeline
failure.

1. Disconnect the pipeline supplies and close all cylinder valves.

2. If the pipeline and cylinder pressure gauges are not at zero:

• Connect an O2 supply.

• Set the System switch to On.

• Set the flow controls to mid range.

• Make sure that all of the gauges except for O2 go to zero.

• Disconnect the O2 supply.

• Make sure that the O2 gauge goes to zero. As the pressure

decreases, the alarms for O2 supply failure should occur.

3. Make sure that the cylinders are full.

• Open each cylinder valve.

• Make sure that each cylinder has sufficient pressure.

• If the cylinder does not have sufficient pressure, close the

cylinder valve and install a full cylinder.

4. Set the System switch to Standby.

5. Turn off the auxiliary O2 flowmeter (if equipped).

6. Turn off the suction (if equipped).

7. Test one cylinder at a time for high-pressure leaks.

• Open the cylinder.

• Note the cylinder pressure.

• Close the cylinder valve.

• Wait for one minute and record the cylinder pressure again.

• If the cylinder pressure for Air or O2 decreases more than

690 kPa (100 psi), there is a leak.

• If the cylinder pressure for N2O decreases more than

690 kPa (100 psi), there is a leak.

5-4 M1132382

Flow control test

WARNING The Link-25 system cannot replace an O2 monitor.

5 Preoperative Tests

Sufficient O2 in the fresh gas may not prevent hypoxic
mixtures in the breathing circuit.

w Nitrous oxide (N2O), if available, flows through the system

during this test. Use a safe and approved procedure to
collect and remove the N2O.

w Incorrect gas mixtures can cause patient injury. If the

Link-25 system does not supply O2 and N2O in the
correct proportions, do not use the system.

w This procedure tests for significant malfunction of the

Link-25 system. It does not confirm the proper calibration
of the Link-25 system. Perform periodic calibrations using
an accurate and properly calibrated O2 monitor as
recommended in the “User Maintenance” section.

1. Connect the pipeline supplies or slowly open the cylinder valves.

2. Turn all flow controls fully clockwise for minimal flow.

3. Set the ACGO switch to ABS.

4. Set the System switch to On.

Note Do not use the system if the Low battery or any ventilator failures

occur.

5. Make sure that the O2 flow tube shows approximately 0.025 to

0.075 l/min.

WARNING Keep the Link-25 system engaged. Adjust only the test

control for the following steps.

• Test N2O first and then O2.

• The O2 cell must be correctly calibrated.

M1132382 5-5

Aespire View

6. Test the Link-25 system by increasing the N2O flow.

• Slowly turn the N2O flow control counterclockwise.

• Increase the N2O flow as specified in the following table and

make sure the O2 flow is as specified.

N2O flow l/min O2 flow greater than l/min

0.8 0.2
2 0.5
4 1.0
10 2.5

7. Test the Link-25 system with O2 flow decreasing.

• Set the N2O flow to 9 l/min.

• Set the O2 flow to 3 l/min or higher.

• Slowly turn the O2 flow control clockwise. Set the N2O flow to

the rates shown in the following table.

N2O flow l/min O2 flow greater than l/min

82
4 1

0.8 0.2

8. Adjust the flow of all gases through the full range and make sure
that the flow tube floats move smoothly.

9. Disconnect the O2 pipeline supply or close the O2 cylinder valve.

10. Make sure that:

• The low O2 supply alarm occurs.

• The N2O and the O2 flows stop. The O2 flow should stop

last.

• The air flow continues (if equipped).

• The gas supply alarms occur on the ventilator if the ventilator

uses O2 as the drive gas.

11. Turn all the flow controls fully clockwise for minimum flow.

12. Reconnect the O2 pipeline supply.

5-6 M1132382

Vaporizer installation

WARNING Use only Datex-Ohmeda, Inc. Selectatec series

w Do not use a vaporizer if it lifts off the manifold when the

w Do not use the system if more than one vaporizer can be

w Tec 6 series vaporizers need the power cable to go

5 Preoperative Tests

vaporizers Tec 4 or greater.

lock lever is in the locked position.

turned on at the same time.

through the channel on the bottom of the vaporizer for
proper alignment. Do not put the power cable on the top
of the manifold or between the vaporizers.

1. Place the vaporizer straight on the manifold.

2. Make sure that the top of each vaporizer is horizontal.

• If a vaporizer is not horizontal, remove it and reinstall it.

3. Set each vaporizer lock lever to the locked position.

4. Try to lift each vaporizer straight up off the manifold.

• Do not pull forward on the vaporizer.

• Do not rotate the vaporizer on the manifold.

5. If the vaporizer lifts off of the manifold, install it again and repeat
this “Vaporizer installation” procedure. If the vaporizer lifts off a
second time, do not use the system.

6. For a Tec 6 series vaporizer:

• Connect the vaporizer to an electrical outlet.

• Hold the Silence alarm touch key (minimum of 4 seconds).

• Make sure all indicators turn on and that the alarm tone

occurs.

• Release the Silence alarm touch key.

7. Try to turn on more than one vaporizer at the same time.

• Test each possible vaporizer combination.

• If more than one vaporizer turns on at the same time, remove

the vaporizers, install them again, and repeat the “Vaporizer
installation” procedure. If the test continues to fail, contact a
Datex-Ohmeda trained service representative.

M1132382 5-7

Aespire View

Vaporizer back pressure test

WARNING Anesthetic agent comes out of the common gas outlet

during this test. Use a safe, approved procedure to
remove and collect the agent.

CAUTION To prevent damage to the vaporizer, turn the flow controls

fully clockwise (minimum flow or off) before turning on the
system.

1. Set the System switch to On. Alarms may occur.

2. Set the O2 flow to 6 l/min.

3. Make sure that the O2 flow stays constant and the float moves
freely.

4. Adjust the vaporizer concentration from 0 to 1%. The O2 flow
must not decrease more than 1 l/min through the full range.

• If the O2 flow decreases more than 1 l/min, install a different

vaporizer and repeat the steps 1 through 4.

• If the O2 flow decreases less than 1 l/min when testing a

different vaporizer, the malfunction is in the vaporizer that
failed the test.

• If the O2 flow decreases more than 1 l/min with the different

vaporizer, the malfunction is most likely in the system. Do not
use the system.

5. Repeat steps 1 through 4 for each vaporizer.

5-8 M1132382

Low-pressure leak test

WARNING Do not use a system that has a low-pressure leak.

Anesthetic agent will go into the atmosphere instead of
into the breathing circuit.

Perform either the “Negative low-pressure leak test” or the “Positive
low-pressure leak test” depending on local requirements. It is not
necessary to perform both tests.

5 Preoperative Tests

Negative low-

pressure leak test

1. Make sure the System switch is set to Standby.

2. Turn off all vaporizers.

3. Turn the ACGO switch to the ACGO position.

4. Compress and release the bulb until all air is removed from the
bulb.

• Occlude the inlet of the test device. Make sure it is a tight

seal.

• If the bulb of the test device inflates in less than 60 seconds,

use a different test device.

5. Test the system for low-pressure leaks.

• Turn the flow controls one and a half turns counterclockwise.

• Connect the test device to the auxiliary gas outlet.

• Compress and release the bulb until all air is removed from

the bulb.

• The floats will move. If the bulb inflates in 30 seconds or less,

there is a leak in the low-pressure circuit. See “Pneumatic
problems” in the “Alarms and Troubleshooting” section.

• Disconnect the test device.

6. Test each vaporizer for low-pressure leaks.

• Turn on one vaporizer.

• Set the vaporizer to 1%.

• Perform step 5.

• Repeat this test with each vaporizer.

• If a low-pressure leak occurs while testing any of the

vaporizers, see “Pneumatic problems” in the “Alarms and
Troubleshooting” section.

• Turn off all vaporizers.

7. Turn all flow controls fully clockwise for minimum flow. Do not
overtighten.

M1132382 5-9

Aespire View

WARNING Agent mixtures from the low-pressure leak test stay in the

system. Clear the system by flowing O2 at 1 l/min for one
minute.

8. Clear the system of agent.

• Set the System switch to On.

• Set the O2 flow to 1 l/min.

• Flow O2 for one minute.

• Turn the O2 flow control fully clockwise for minimum flow.

Positive low-

pressure leak test

Note Push the positive-pressure leak test adapter into the ACGO port

CAUTION Do a positive low-pressure leak test at the ACGO port

Note Keep the test device flow tube vertical for accurate results.

CAUTION If the needle valve is not fully open, this test can damage

1. Connect the test device to the ACGO port with the positive­pressure leak test adapter.

throughout the test to maintain a tight seal.

only.

2. Turn the ACGO switch to the ACGO position.

3. Turn all flow controls fully clockwise for minimum flow.

4. Turn all vaporizers off.

5. Fully open the needle valve on the test device.

the pressure gauge on the test device.

6. Open the O2 flow control and set for a total flow on the test
device of 0.4 l/min.

7. Make sure that the pressure gauge on the test device is at zero,
and make sure that all other flow controls are fully closed.

8. Close the needle valve on the test device until the gauge reads
20 kPa (3 psi) for (BSI) or 3 kPa (.4 psi) for ISO.

9. If the flow through the test device is less than 0.35 l/min ISO or

0.3 l/min (BSI), there is a low pressure leak in the system. See
“Pneumatic problems” in the “Alarms and Troubleshooting”
section.

10. Test each vaporizer.

• Turn on the vaporizer being tested, and set it to 1%.

• Perform steps 5 through 9 of this test for each vaporizer.

11. Make sure all vaporizers are turned off.

5-10 M1132382

Alarm tests

5 Preoperative Tests

WARNING Agent mixtures from the low-pressure leak test stay in the

system. Clear the system by flowing O2 at 1 l/min for one
minute.

12. Clear the system of agent.

• Set the O2 flow to 1 l/min.

• Flow O2 for one minute.

• Turn the O2 flow control fully clockwise for minimum flow.

1. Connect a test lung to the patient connection.

2. Set the Bag/Vent switch to Vent.

3. Set the System switch to On.

4. Push the Menu key.

5. Select Ventilation Mode - VCV.

6. Set the ventilator parameters.

• TV 400 ml.

• Rate 12.

• I:E 1:2.

•Pmax 40 cmH2O.

• PEEP Off.

7. Set the O2 flow to the minimum flow.

8. Turn off all other gases.

9. Push the O2 flush button to fill the bellows.

10. Set the Bag/Vent switch to Bag and then to Vent. Make sure that:

• Mechanical ventilation starts.

• A subatmospheric pressure alarm does not occur.

• The ventilator shows the correct data based on settings.

• The bellows inflate and deflate during mechanical ventilation.

11. Set the O2 flow control to 5 l/min. Make sure that:

• The pressure at the end of the breath is approximately

2 cmH2O. This can be seen on the pressure waveform
displayed below.

• The ventilator shows the correct data based on settings.

• The bellows inflate and deflate during mechanical ventilation.

M1132382 5-11

Aespire View

12. Test the O2 monitor and alarms (alarms other than Low O2 and
High O2 may occur).

• Remove the O2 cell, and make sure that the cell measures

approximately 21% O2 in room air.

• Push the Menu key.

•Select Alarm Setup from the Main Menu.

• Set the Low O2 alarm to 50%, and make sure that a Low O2

alarm occurs.

• Set the Low O2 alarm to 21%, and make sure that the Low

O2 alarm stops. This will create a latched alarm,
acknowledge this by pushing the Alarm silence key.

• Put the O2 cell back into the circuit.

• Set the High O2 alarm to 50%.

• Push the O2 flush button to fill the breathing system, and

make sure that the High O2 alarm occurs.

• Set the High O2 alarm to Off, and make sure that the alarm

stops.

• Flow 100% O2 for 2 minutes, and make sure that the O2 cell

measures 100% O2.

13. Test the low minute volume alarm.

• Push the Menu key.

•Select Alarm Setup from the Main Menu.

• Set the alarm limit for low minute volume to 6 l/min.

• Make sure that the low minute volume alarm occurs.

• Set the low minute volume alarm to Off.

14. Test the low airway pressure alarm.

• Remove the test lung from the patient connection.

• Make sure that the low airway pressure alarm occurs (other

alarms may occur).

15. Test the sustained airway pressure alarm.

• Set the APL valve to 70 cmH2O.

• Set the Bag/Vent switch to Bag.

• Occlude the patient connection and push the O2 flush button.

• Make sure that the Ppeak high. Blockage? (sustained airway

pressure) alarm occurs after approximately 15 seconds at the
sustained pressure limit.

5-12 M1132382

Breathing system tests

1. Make sure that the auxiliary equipment is functioning correctly.

2. Verify that AGSS is functioning correctly.

3. Make sure that the check valves on the breathing circuit module

WARNING Objects in the breathing system can stop gas flow to the

patient, causing injury or death. Use a test plug that is the
appropriate size so that it will not fall into the breathing
system.

5 Preoperative Tests

• Some breathing systems with active AGSS have a flow

indicator on the side. Make sure that the flow indicator shows
a flow in the green range.

work correctly.

• The expiratory check valve rises during expiration and falls at

the start of inspiration.

• The inspiratory check valve rises during inspiration and falls

at the start of expiration.

After performing the breathing system tests, make sure
that there are no test plugs or other objects caught in the
breathing system.

Bellows test 1. Set the System switch to Standby.

2. Set the Bag/Vent switch to Vent.

3. Set all flow controls to minimum flow.

4. Occlude the patient connection.

5. Push the O2 flush button to fill the bellows. Release the O2 flush
button.

6. Make sure that the pressure does not increase to more than
15 cmH2O on the pressure gauge.

7. If the bellows falls lower than the top of the indicator, there is a
leak. See “Breathing system problems” in the “Alarms and
Troubleshooting” section.

M1132382 5-13

Aespire View

Breathing circuit test 1. Set the System switch to On.

2. Set the Bag/Vent switch to Bag.

3. Occlude the bag port.

4. Set the APL valve to 70 cmH2O.

5. Set the O2 flow to 250 ml/min.

6. Occlude the patient connection.

7. Push the O2 flush button and pressurize the bag to approximately
30 cmH2O.

8. Release the O2 flush button. The pressure must not decrease.
Any pressure decrease shown on the pressure gauge indicates a
leak. Repair any leaks in the breathing circuit.

APL valve test 1. Set the System switch to On.

2. Occlude the patient connection.

3. Occlude the bag port.

4. Set the APL valve to 70 cmH2O.

5. Set the O2 flow to 3 l/min. Make sure that the value on the
inspiratory pressure gauge does not exceed 85 cmH2O. Some
pressure fluctuation is normal.

6. Set the APL valve to MIN.

7. Make sure that the value on the inspiratory pressure gauge is
less than approximately 5 cmH2O.

8. Push the O2 flush button. Make sure that the value on the
inspiratory pressure gauge stays near zero.

9. Set the O2 flow to minimum and make sure that the value on the
inspiratory pressure gauge does not decrease below 0 cmH2O.

5-14 M1132382

Monitor and ventilator tests

1. Connect a test lung to the patient connection.

2. Set the Bag/Vent switch to Bag.

3. Set the System switch to On.

4. Push the Menu key.

5. Select Ventilation Mode - VCV.

6. Set the ventilator parameters.

• TV 400 ml.

• Rate 12.

• I:E 1:2.

•Pmax 40 cmH2O.

• PEEP Off.

7. Set the Bag/Vent switch to Vent.

8. Push the O2 flush button to fill the bellows.

9. Make sure that:

• Mechanical ventilation starts.

• A subatmospheric pressure alarm does not occur.

• The ventilator shows the correct data based on settings.

• The bellows inflate and deflate during mechanical ventilation.

10. Set the O2 flow control to 5 l/min.

5 Preoperative Tests

11. Make sure that:

• The end expiratory pressure is approximately 2 cmH2O.

Positive end expiratory pressure that occurs when PEEP is
Off may indicate that the scavenging system is not removing
enough gas.

• The ventilator shows the correct data based on settings.

• The bellows inflate and deflate during mechanical ventilation.

M1132382 5-15

Aespire View

12. Set the ventilator controls and alarm limits to clinically appropriate
levels.

13. Prepare the system.

• Turn all vaporizers off.

• Set the APL valve to MIN.

• Set the Bag/Vent switch to Bag.

• Set all flow controls to minimum.

• Set sufficient patient suction.

• Make sure that the breathing system is correctly connected

and not damaged.

WARNING Flush the system with 5 l/min of O2 for at least one minute

to remove any gas mixtures or by-products from the
system.

5-16 M1132382

6 Alarms and Troubleshooting

WARNING Set alarm levels appropriately before starting ventilation

(manual or mechanical).

w If an alarm occurs, safeguard the patient first before

performing troubleshooting or doing repair procedures.

w Do not use malfunctioning equipment. Contact a

Datex-Ohmeda trained representative for service.

w No repair should ever be attempted by anyone not having

experience in the repair of devices of this nature. See the
“Repair policy” in the “User Maintenance” section.

In this section Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

List of alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Alarm ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Alarm tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Breathing system problems . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Electrical problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Pneumatic problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

M1132382 6-1

Aespire View

Alarms

When an alarm occurs during a case, an alarm tone sounds and the
alarm message is displayed in the alarm message field. The alarm
message area has room for four alarms to be shown at one time. If
more than four alarms occur, the alarms cycle every two seconds.

Alarms have three general causes:

• Malfunctions - Result in reduced system function or prevent
mechanical ventilation.

• Patient monitoring - Are caused by high and low limit settings that
are adjusted by the user.

• Informational - Are caused by control settings or system
conditions that may change system operation.

Audio Alarm priority is dependent on the level of risk to the patient.

A high-priority alarm tone sounds in two bursts of five tones, a 10
second pause, and then repeats. Some high-priority alarms can be
silenced for 120 seconds.

Medium-priority alarm tones sound in three tones with a 25 second
pause, then repeats. Medium priority alarms can be silenced for 120
seconds.

Informational alarms have a single alarm tone and the tone does not
repeat.

Silencing an alarm stops the audible tone for 120 seconds. Pushing
the Alarm silence key when no medium or high-priority alarms are
active suspends audible alarm tones for 90 seconds.

Display Messages for alarms are displayed as follows:

• High-priority alarms show in white text on a red background.

• Medium priority alarms show in yellow text on a dark gray
background.

• Informational messages show in white text on a dark gray
background.

6-2 M1132382

6 Alarms and Troubleshooting

Latching alarms Some patient parameter alarms continue to be displayed (latch) when

the alarm condition is corrected. When an alarm is latched, the alarm
messages show in white text on a black background.

Latching alarm Flashing parameter

O2% low O2
No O2 pressure None
Ppeak high Ppeak
PEEP high. Blockage? Ppeak
Negative airway pressure None
Apnea > 120 s TVexp
Inspiration stopped None

The alarm remains in this condition until it is acknowledged by
pushing the Alarm silence key or until the alarm reoccurs. When the
alarm is acknowledged, it is removed from the screen. If an alarm has
latched and the alarm reoccurs before it is acknowledged, the alarm
will revert to an active state.

M1132382 6-3

Aespire View

List of alarms

If corrective action does not resolve the alarm, contact a
Datex-Ohmeda trained service representative.

Message Priority Cause Action

+15V Analog out­of-range

+6V Analog out-of­range

-6V Analog out-of­range

5V Ref out-of-range Minimum shutdown

1.225 V Ref out-of­range

12 hour test
recommended

A/D converter
failure

Absorber panel
open
ACGO on Medium

Apnea > 120 s High No mechanical breaths or

Apnea Medium No mechanical breaths or

Apnea alarm off Informational The Cardiac Bypass option is set to

Apnea alarm
standby

Backup mode
active

Battery charger fail Informational The current in the battery charging

Battery charging Informational Battery is not fully charged. Leave the system plugged in to charge the

Battery circuit
failure

Battery current high Informational Battery current greater than 6 amps

Minimum shutdown
(High)

Minimum shutdown
(High)

Minimum shutdown
(High)

(High)

Minimum shutdown
(High)

Informational System is in use for more than 12

Minimum shutdown
(High)

Medium The breathing system is not fully

(Informational after
acknowledge)

Informational Normal condition after End Case,

Informational No spontaneous breaths in set period

Informational Battery measures less than 7 V or

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

hours without a power-up self test.
Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

latched.
The outlet selection switch is set to
the auxiliary common gas outlet.

spontaneous breaths greater than 5
ml in last 120 seconds.

spontaneous breaths greater than 5
ml in last 30 seconds.

On in the Main Menu.

power-up, or ACGO change from On
to Off.

of time and 30 seconds have elapsed
since starting PSVPro mode.

circuit is too high.

higher than 16.5 V.

for 10 seconds.

Contact a Datex-Ohmeda trained service
representative.

Contact a Datex-Ohmeda trained service
representative.

Contact a Datex-Ohmeda trained service
representative.

Contact a Datex-Ohmeda trained service
representative.

Contact a Datex-Ohmeda trained service
representative.

At end of the case, move the System switch
from On to Standby to On.

Contact a Datex-Ohmeda trained service
representative.
Fully latch the breathing system.

Connect the patient circuit to the auxiliary outlet.
For mechanical ventilation or ventilation with
monitoring, select the circle system setting.
Check the patient. Bag as needed. Check for
disconnects. If the patient is on a heart lung
machine, select Cardiac Bypass from the Main
menu.
Check the patient. Bag as needed. Check for
disconnects. If the patient is on a heart lung
machine, select Cardiac Bypass on the Main
Menu.

Set Cardiac Bypass to Off in the Main Menu.

Monitoring resumes after first breath
(mechanical) or two breaths within 30 seconds
(non-mechanical).

Select a new ventilation mode or switch to
manual ventilation.

System is operational, but may fail on battery if
mains power is lost. Contact a Datex-Ohmeda
trained service representative.

battery.
System is operational, but may fail on battery if

mains power is lost. Contact a Datex-Ohmeda
trained service representative.
System is operational, but may fail on battery if
mains power is lost. Contact a Datex-Ohmeda
trained service representative.

6-4 M1132382

6 Alarms and Troubleshooting

Message Priority Cause Action

Battery failure high Informational Battery voltage greater than 16 V for

Battery failure low Informational The battery voltage is too low (less

Calibrate flow
sensors

Calibrate O2
sensor

Cardiac bypass Informational The Cardiac Bypass option is set to

Check flow sensors Medium

Circuit leak Medium Exhaled volume less than 50% of

Circuit leak audio
off
Connect O2 sensor Medium O2 cell is not installed in the breathing

CPU failure Minimum shutdown

Display failure Medium Backlight input supply is less than

Dry or replace flow
sensors

Gas inlet valve
failure

Increase low MV
limit
Inspiration stopped High Drive gas safety switch activated (high

Internal ventilator
clock too fast

Internal ventilator
clock too slow

Informational The last flow sensor calibration failed. Zero the flow sensors. Look for water in the flow

Informational Calibration failure or O2% > 110%. Calibrate the O2 sensor. Replace the sensor if

(Informational after
acknowledge)

Informational Leak Audio is set to Off on the Alarm

(High)

Medium
(Informational after
acknowledge)

Minimum shutdown
(High)

Medium The low MV limit is set to Off. Turn on the MV low setting.

Minimum shutdown
(High)

Minimum shutdown
(High)

10 seconds.

than 7 V) to supply the system if
power fails.

On. Apnea alarms are off.
System has detected an improper flow
pattern in the breathing circuit.

inspired volume for at least 30
seconds (mechanical ventilation).

Setup menu.

system. The O2 cell is not measuring
gas in the breathing circuit.

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

9.35V or greater than 13.65V. This
alarm message may not always be
viewable.

Expired volume is greater than
inspired volume for six breaths with a
circle module.

Ventilator pressure sensor
malfunction.

pressure).

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

System is operational, but may fail on battery if
mains power is lost. Contact a Datex-Ohmeda
trained service representative.

System is operational, but will fail on battery if
mains power is lost. Leave the system plugged
in to charge the battery. If the battery does not
charge in 24 hours, contact a Datex-Ohmeda
trained service representative.

sensor tubes and dry if necessary. Replace
sensor if necessary. Contact a Datex-Ohmeda
trained service representative if calibrating or
replacing the sensor does not correct the
problem.

calibration is unsuccessful. Contact a Datex­Ohmeda trained service representative if
calibrating or replacing the sensor does not
correct problem.

Set Cardiac Bypass to Off in the Main Menu.

Check if the flow sensors are correctly installed.
Check for water buildup in the flow sensor
tubes. Inspect one way valves (breathing circuit
module.) Check the condition of the flow sensor
and its tubing.
Check breathing circuit and flow sensor
connections. Patient circuit leak audio can be
turned off in the Alarm Setup menu.
Turn Leak Audio to On on the Alarm Setup
menu.
Install or replace the O2 cell.

Contact a Datex-Ohmeda trained service
representative.
Continue to use the system normally. Contact a
Datex-Ohmeda trained service representative.

Check patient condition. Check that the flow
sensors are installed correctly. Check that there
is no water buildup in the flow sensor tubes.
Verify proper check valve operation. Inspect one
way valves (breathing circuit module). Replace
flow sensors.

Ventilate manually. Monitoring is not available.
Contact a Datex-Ohmeda trained service
representative.

Adjust the controls. Check the system for
blockages. Contact a Datex-Ohmeda trained
service representative if problem continues.

Contact a Datex-Ohmeda trained service
representative.

Contact a Datex-Ohmeda trained service
representative.

M1132382 6-5

Aespire View

Message Priority Cause Action

Invalid circuit
module

Limit task light use Informational The system is operating on battery

Loss of backup
audio

Low battery voltage Medium Voltage is less than 11.65V while

Memory
(EEPROM) failure

Memory (flash)
failure

Memory (redundant
storage) fail

Monitoring only Medium A severe malfunction prevents

MVexp high Medium Exhaled minute volume is greater

MVexp low Medium Exhaled minute volume less than the

Negative airway
pressure

No CO2 absorption Medium

No exp flow sensor Medium

No insp flow sensor Medium

No O2 pressure High (cannot be

O2 flush stuck on? Informational O2 flush flow is detected for greater

O2% high Medium O2% is greater than the alarm high

Informational Absorber switches do not detect a

Medium
(Informational after
acknowledge)

Informational The system cannot access some

Minimum shutdown
(High)

Minimum shutdown
(High)

High Subatmospheric pressure (less than

(Informational after
acknowledged)

(Informational after
acknowledge)

(Informational after
acknowledge)

silenced)

valid breathing circuit module.

power.

Alarm audio malfunction. Continue to use normally. Contact a Datex-

using battery power.

stored values.

Ventilator malfunction. Ventilate manually. Monitoring is not reliable.

Ventilator malfunction. Ventilate manually. Monitoring is still available.

mechanical ventilation. Other alarms
may also occur.

than the high limit setting. This alarm
is suspended for nine breaths or one
minute (whichever is greater) after the
ventilator settings are changed.

low limit alarm setting. This alarm is
suspended for nine breaths or one
minute (whichever is greater) after the
ventilator settings are changed.

-10 cmH2O).

Absorber canister is not latched when
CO2 bypass is in place.

Electrical signals show the flow
sensor is not connected.

Electrical signals show the flow
sensor is not connected.

The O2 supply has failed for 10
seconds.

than or equal to 30 seconds.

limit setting.

Make sure the breathing system is correctly
installed. Continue to use normally. Contact a
Datex-Ohmeda trained service representative.

Manually ventilate the patient to save power.
Make sure power is connected and circuit
breakers are closed.

Ohmeda trained service representative.

Manually ventilate the patient to save power.
Make sure power is connected and circuit
breakers are closed.

Default settings are used. Ventilation is still
possible but service is necessary. Contact a
Datex-Ohmeda trained service representative.

Contact a Datex-Ohmeda trained service
representative.

Contact a Datex-Ohmeda trained service
representative.
Ventilate manually. Cycle system power (On­Standby-On). If the alarm clears, restart
mechanical ventilation. Contact a Datex­Ohmeda trained service representative.
Check patient for spontaneous breathing. Adjust
control settings.

Check patient condition. Check tubing
connections. Check alarm settings.

Check the patient condition for spontaneous
activity. Increase fresh gas flow. Look for high
flow through gas scavenging. Calibrate the flow
sensors. With active scavenging, check the
negative relief valve on the receiver.
Check that the absorber canister is properly
latched. Continue to use the system normally.
Contact a Datex-Ohmeda trained service
representative.
Connect the flow sensors. Make sure the flow
sensor module is on all the way.

Connect the flow sensors. Make sure the flow
sensor module is on all the way.

Air flow will continue. Ventilate manually if
necessary. Connect a pipeline supply or install
an O2 cylinder.

Stop pressing the O2 flush button. If this alarm
occurs when flush is not in use, contact a Datex­Ohmeda trained service representative.
Verify that the limit it set correctly. Check that
the O2 flow is adequate. Calibrate the O2
sensor. If calibration fails, replace the O2
sensor.

6-6 M1132382

6 Alarms and Troubleshooting

Message Priority Cause Action

O2% low High O2% is less than the alarm low limit

PEEP high.
Blockage?

PEEP high.
Blockage?

Plug in power
cable. On battery.

Positive SIB Vref
out-of-range

Ppeak high High Ppeak is greater than Pmax. The

Ppeak low. Leak? Medium Ppeak is less than 4 cm above Pmin

Pressure/volume
monitor inactive

Replace exp flow
sensor

Replace insp flow
sensor

Replace O2 sensor Informational O2% is less than 5%. Make sure the patient receives O2. Use a

Reverse exp flow Medium

Reverse insp flow Medium

Select gas outlet Medium With ACGO On, the flow sensors

Service calibration Informational Corrupt or invalid calibration data for

Software error Minimum

Software/Hardware
Incompatibility
System leak? Medium

TFS module error Informational TFS module connected but not

Minimum shutdown
(High)

High Paw greater than or equal to

Medium
(Informational after
acknowledge)

Minimum shutdown
(High)

Medium
(Informational after
acknowledge)

Informational The system cannot read the

Informational The system cannot read the

(Informational after
acknowledge)

(Informational after
acknowledge)

Shutdown (High)

Minimum
Shutdown (High)

(Informational after
acknowledge)

setting.

Paw greater than 100 cmH2O for 10
seconds.

sustained pressure limit for 15

1

seconds
The mains supply is not connected or
has failed and the system is using

battery power.

Ventilator malfunction. Ventilate manually. Monitoring is still available.

ventilator cycles to expiration.

for 20 seconds when RR is greater
than or equal to four.
Ppeak is less than 4 cm above Pmin
for 35 seconds when RR is less than
four.

The outlet selection switch is set to
the ACGO.

calibration data stored in the sensor.

calibration data stored in the sensor.

Flow through the expiratory sensor
during inspiration (for six breaths in a
row).

Flow through the inspiratory sensor
during expiration (for six breaths in a
row).

have detected three breaths in patient
circuit during the last 30 seconds.

the flow valve.
Indicates that a software error has

occurred.

Compatibility error between the
software and the hardware.
Leak detected between ventilator and
patient circuit.

operating correctly.

.

Verify that the limit it set correctly. Check that
the O2 flow is adequate. Calibrate the O2
sensor. If calibration fails, replace the O2
sensor. As the cell wears out, the measured %
of O2 decreases.

Check the tubing and breathing system for
blockages. Ventilate manually. Contact a Datex­Ohmeda trained service representative.

Check tubing for kinks, blockages, disconnects.
Calibrate the flow sensors.

Ventilate manually to save power. At full charge,
the battery permits approximately 90 minutes of
mechanical ventilation. Make sure power is
connected and circuit breakers are closed.

Contact a Datex-Ohmeda trained service
representative.
Verify Pmax and other controls are set correctly.
Look for blockages. Check patient connection.
Verify circuit connections are okay. Look at the
Paw gauge on the absorber. Look for circuit
disconnection.

Connect the patient circuit to the auxiliary outlet.
For mechanical ventilation or ventilation with
monitoring, select the circle system setting.

Operation continues with reduced accuracy.
Replace the flow sensor.

Operation continues with reduced accuracy.
Replace the flow sensor.

different monitor. Calibrate the O2 sensor.
Replace the O2 cell.
Look at the check valves. Check for water
buildup in the flow sensor tubes. Check the flow
sensor condition. Replace the expiratory check
valve.

Look at the check valves. Check for water
buildup in the flow sensor tubes. Check the flow
sensor condition. Replace the expiratory check
valve.

Turn the ACGO off or connect the non-circle
patient circuit to the ACGO. Note: The bag arm
will not ventilate a patient at the auxiliary outlet.

The system is operational. Contact a Datex­Ohmeda trained service representative.

Ventilate manually. Monitoring is not reliable.
Contact a Datex-Ohmeda trained service
representative.

Ventilate manually. Contact a Datex-Ohmeda
trained service representative.
Look for leaks in the absorber system. Check
the integrity of the flow sensors. Zero the flow
sensors. Inspect for leaks (repair). Inspect or
replace flow sensors.

System is operational, but TFS is not
functioning correctly. Contact a Datex-Ohmeda
trained service representative.

M1132382 6-7

Aespire View

Message Priority Cause Action

TFS module error ­Air sensor

TFS module error ­N2O sensor

TFS module error ­O2 sensor

TVexp high Medium Exhaled tidal volume is greater than

TVexp low Medium Exhaled tidal volume is less than the

TV not achieved Informational Tidal volume measured by inspiratory

Unable to drive
bellows

Ventilator has no
drive gas

Vol vent only. No
PEEP or PSV.

Informational TFS module connected but the Air

Informational TFS module connected but N2O fresh

Informational TFS module connected but O2 fresh

Informational Manifold pressure is greater than

Medium
(Informational after
acknowledge)

Medium Manifold pressure error. Pressure

sensor is reporting an error.

gas sensor is reporting an error.

gas sensor is reporting an error.

the high alarm limit. This alarm is
suspended for nine breaths after a
change in the ventilator settings.

low alarm limit. This alarm is
suspended for nine breaths after a
change in the ventilator settings.

flow sensor is less than the set value
for six breaths in a row after the first
minute of mechanical ventilation.

Paw.
The ventilator does not detect supply

pressure.

control unavailable.

System is operational, but the Air flow sensor is
not functioning correctly. Contact a Datex­Ohmeda trained service representative.

System is operational, but N2O sensor is not
functioning correctly. Contact a Datex-Ohmeda
trained service representative.
System is operational, but the O2 flow sensor is
not functioning correctly. Contact a Datex­Ohmeda trained service representative.

Check patient for spontaneous breathing.
Check ventilator and alarm settings.

Check patient condition. Check tubing
connections. Check alarm settings.

Adjust controls to supply adequate tidal
volumes. Check I:E, Pmax, and volume
settings. Possible leak. Modify settings or check
for system leaks.

Check the drive gas. Increase fresh gas flow (or
push the O2 flush button) to fill the bellows.

Manually ventilate the patient. Make sure that
the appropriate gas supplies (O2 or Air) are
connected and pressurized.

Continue to use volume control ventilation or
ventilate manually. Shut down system as soon
as possible. Contact a Datex-Ohmeda trained
service representative.

1

The sustained pressure threshold is calculated from the pressure limit setting. The sustained limit is

calculated as follows:

Mechanical
ventilation with
PEEP Off

Mechanical
ventilation with
PEEP On

Mechanical
Ventilation Off

For Pmax less than or equal to 30 cmH2O, the sustained pressure limit is 6 cmH2O.
For Pmax between 30 and 60 cmH2O, the sustained pressure limit is 20% of Pmax.
For Pmax greater than or equal to 60 cmH2O, the sustained pressure limit is 12 cmH2O.

For Pmax less than or equal to 30 cmH2O, the sustained pressure limit is 6 cmH2O plus
“set PEEP” minus 2 cmH2O.
For Pmax between 30 and 60 cmH2O, the sustained pressure limit is 20% of Pmax plus
“set PEEP” minus 2 cmH2O.
For Pmax greater than 60 cmH2O, the sustained pressure max is 12 cmH2O plus “set
PEEP” minus 2 cmH2O.
For Pmax between 12 and 60 cmH2O, the sustained pressure limit is 50% of Pmax.
For Pmax greater than 60 cmH2O, the sustained pressure limit is 30 cmH2O.

6-8 M1132382

6 Alarms and Troubleshooting

Minimum system

shutdown and

monitoring alarms

There are two special alarm types:

• Minimum system monitoring alarms stop mechanical ventilation.

• Minimum system shutdown alarms stop mechanical ventilation
and monitoring.

The software goes to minimum system monitoring when a non­recoverable error occurs during bootup or normal operation. The
ventilator shows data and mechanical ventilation stops. ‘Monitoring
only’ appears in the Alarm message area and a specific failure
message appears in the User message area.

The following are minimum system monitoring alarms:

• Manifold pressure sensor failure.

• Pressure limit switch failure.

• Flow valve (DAC) failure.

• Flow valve (current) failure.

• Valve power failure.

A severe malfunction causes minimum system shutdown alarms.
This condition prevents mechanical ventilation and monitoring. If this
condition occurs:

• Ventilate manually.

• Use a stand-alone monitor.

• Cycle system power (On-Standby-On).

If the alarm clears, restart mechanical ventilation. If the alarm does
not clear, contact a Datex-Ohmeda

trained service representative.

M1132382 6-9

Aespire View

Alarm ranges

Alarm tests

Alarm Range Increment Default

O2% high Off, 21-99% 1% Off

O2% low 18-99% 1% 21%

MVexp high Off, 0.5-30 l/min 0.5 l/min 10.0 l/min

MVexp low Off, 0.1-10 l/min 0.1 l/min 2.0 l/min

TVexp high 20-1600 ml 20 ml 1000 ml

TVexp low Off, 5-1500 ml 5 ml for less than

20 ml,

otherwise 20 ml

Leak Audio On, Off N/A On

Test the system to verify that alarms are functioning:

1. Connect a test lung to the patient connection.

2. Start a case.

3. Set the Bag/Vent switch to Vent.

Off

4. Set the controls.

• Ventilation mode: Volume Control (VC).

• Ventilator.

— Tidal Vol: 400 ml
— Rate: 12
— I:E Ratio: 1:2
— Plimit: 40 cmH2O
— PEEP: Off

• Anesthesia machine.

— O2 flow: minimum flow (25-75 ml/min).
— All other gases: Off
— Push O2 flush button to fill bellows.

5. Set the O2 concentration to 30% and allow the O2 reading to
stabilize.

6-10 M1132382

6 Alarms and Troubleshooting

6. Test the O2 alarms.

• Remove the O2 cell from the breathing circuit and make sure

it measures approximately 21% O2 in room air.

• Set the O2 low alarm limit to 50%. Make sure the O2% low

alarm occurs.

• Set the O2 low alarm limit back to 21% and make sure that

the O2% low alarm cancels.

• Install the O2 cell in the breathing circuit.

• Set the O2 high alarm limit to 50%.

• Push the O2 flush button to fill the breathing system.

• Make sure the O2% high alarm occurs.

• Set the O2 high alarm limit back to Off. Make sure that the

O2% high alarm cancels.

• After two minutes in pure O2, the O2 cell measures

approximately 100% O2.

7. Test the MVexp low alarm.

• Go to the Alarm Setup menu.

• Set the MV low alarm limit to 6.0 l/min

• Make sure the MVexp low alarm occurs.

• Set the MV low alarm limit to Off.

8. Test the Ppeak high alarm.

•Set Pmax to less than the peak airway pressure.

• Make sure the Ppeak high alarm occurs.

•Set Pmax to the desired level.

9. Test the PEEP high. Blockage? alarm.

• Close the APL valve.

• Set the Bag/Vent switch to Bag. Mechanical ventilation stops.

• Block the patient connection and push the O2 flush button.

• Make sure the PEEP high. Blockage? alarm occurs after

approximately 15 seconds.

10. Test the Ppeak low. Leak? alarm.

• Unblock the patient connection.

• Set the Bag/Vent switch to Vent.

• Set the tidal volume and total flow to minimum.

• Other alarms such as MVexp low can occur.

• Make sure that the Ppeak low. Leak? alarm occurs.

11. Set all alarm limits to approved clinical values.

M1132382 6-11

Aespire View

Breathing system problems

System Problem Solution

Gas scavenging flow is
too low or too high.

The bellows fills when the
Bag/Vent switch is set to
Bag or the bag fills when
the switch is set to Vent.

The ventilator does not
read the position of the
Bag/Vent switch.

APL valve does not
operate correctly.
Large breathing system
leak not quickly located.

Bellows falls below top of
indicator during “Bellows

test.”

Scavenging extract flow
problem.

Filter blockage. Active systems
have a flow indicator.

Leak through the Bag/Vent
switch.

Ventilator or absorber
malfunction.

APL valve problem. Replace APL valve seal and

Bag hose not connected
properly.

Absorber canister not installed
correctly.
Leak in the breathing system. Check, clean or reposition the

Use a different scavenging
extraction system. Verify flow is
within specification.

Replace the filter. See

“Remove the AGSS Receiver
Filter” in the “ABS Cleaning
and Sterilization” manual.

Contact a Datex-Ohmeda
trained service representative
to repair the system.

Ventilate manually. Contact a
Datex-Ohmeda trained service
representative to repair the
system.

diaphragm.
Ensure that the bag hose is
connected to the bag port
(below the APL valve).
Reinstall the absorber canister,
ensure both pins are engaged.

pressure relief valve. If the
problem persists, replace the
pressure relief valve, bellows
base, or bellows assembly.

6-12 M1132382

Electrical problems

WARNING If a circuit breaker opens frequently, do not use the

System Problem Solution

Mains indicator is not on. The electrical power cable is not

One electrical outlet does
not have power.
A circuit breaker opens
frequently.

Tec 6 series vaporizer
has no power.

6 Alarms and Troubleshooting

system. Have a Datex-Ohmeda trained service
representative repair the system.

Connect the power cable.
connected.
The inlet circuit breaker (switch)
is off.
The power cable is damaged. Replace the power cable.
The electrical socket the power
cable connects to had no power.
An internal fuse is open. Have a Datex-Ohmeda trained

The outlet circuit breaker is off. Turn the circuit breaker on.

Equipment connected to the
outlet uses more current than
the circuit breaker rating.
The equipment connected to the
outlet has a short.

Not plugged into outlet. Connect power cable.
The outlet circuit breaker is off Turn the circuit breaker on.

Turn the circuit breaker on.

Use a different electrical

socket.

service representative repair

the system.

Use a different power supply

for some of the equipment.

Have a Datex-Ohmeda trained

service representative repair

the system.

M1132382 6-13

Aespire View

Pneumatic problems

System Problem Solution

High-pressure leak test
fails.

Low-pressure leak test
fails with a vaporizer on.

Low-pressure leak with a
vaporizer off.

Controls are not set correctly. Make sure that no gas is

flowing, turn off the auxiliary

flowmeter, and repeat the test.
Incorrect cylinder connection. Make sure that there is only

The vaporizer is not correctly
installed.
The vaporizer filler is loose
(funnel fill type vaporizer).
Vaporizer port o-rings (external)
are damaged or not installed.
A vaporizer malfunction (the leak
stops if a different vaporizer is
used in the same manifold
position).
A port valve malfunction (the
leak continues if a different
vaporizer in the same manifold
position).
Anesthesia machine problem. Contact a Datex-Ohmeda

one cylinder gasket, the gasket

is in good condition, and the

connection is tight.

Correctly install the vaporizer.

Tighten the filler.

Install new o-rings.

Send the vaporizer to an

approved service center for

repair.

Contact a Datex-Ohmeda

trained service representative

to repair the vaporizer

manifold.

trained service representative.

6-14 M1132382

7 User Maintenance

WARNING To help prevent fires:

• Only use lubricants approved for anesthesia or O2
equipment, such as Krytox.

• Do not use lubricants that contain oil or grease. They
may burn or explode in high O2 concentrations.

• All materials used to cover the system must be made
from antistatic (conductive) materials. Static electricity
can cause fires.

• Desiccated (dehydrated) absorbent material may
produce dangerous chemical reactions when exposed
to inhalation anesthetics. Adequate precautions
should be taken to ensure that absorbent does not dry
out. Turn off all gases when finished using the system.

w Obey infection control and safety procedures. Used

equipment may contain blood and body fluids.

w Moveable parts and removable components may present

a pinch or a crush hazard. Use care when moving or
replacing system parts and components.

In this section Repair policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Maintenance summary and schedule . . . . . . . . . . . . . . . . . . 7-2

Breathing system maintenance. . . . . . . . . . . . . . . . . . . . . . . 7-3

O2 cell replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

O2 cell calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Zeroing flow sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Prevent water buildup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

M1132382 7-1

Aespire View

Repair policy

Do not use malfunctioning equipment. Make all necessary repairs or
have the equipment serviced by a Datex-Ohmeda trained service
representative. After repair, test the equipment to ensure that it is
functioning properly in accordance with Datex-Ohmeda’s published
specifications.

To ensure full reliability, have all repairs and service done by a
Datex-Ohmeda trained service representative.

No repair should ever be attempted by anyone not having training
and experience in the repair of devices of this nature.

Replace damaged parts with components manufactured or sold by
Datex-Ohmeda. Then test the unit to ascertain that it complies with
Datex-Ohmeda’s published specifications.

Contact a Datex-Ohmeda Field-Service Representative for service
assistance.

Maintenance summary and schedule

These schedules indicate the minimum frequency of maintenance
based on typical usage of 2000 hours per year. Equipment should be
serviced more frequently if it is used more than the typical yearly
usage.

For detailed cleaning instructions, refer to the Advanced Breathing
System Cleaning and Sterilization manual which accompanies the
machine.

Note Local policies or regulations may require that maintenance be

performed more frequently than stated here.

7-2 M1132382

User maintenance

7 User Maintenance

Minimum Frequency Maintenance

Daily • Clean the external surfaces.

Two weeks Drain the vaporizers and discard the agent. This is not

Monthly • Perform 100% O2 calibration.

During cleaning and
setup

Annually Replace the external o-rings on the vaporizer ports.
As necessary • Install new cylinder gaskets on cylinder yokes.

• Perform 21% O2 calibration.

• Check the condenser reservoir (if equipped). Drain if
needed.

• Zero the flow sensors.

necessary for the Tec 6 series vaporizers.

• Lubricate all cylinder supply tee handle threads with
Krytox or a lubricant approved for use with 100% O2.

Inspect the parts for damage. Replace or repair as
necessary.

• Empty the water reservoir and replace the absorbent in
the canister.

• Empty the overflow trap on the optional suction
regulator (if equipped).

• Replace the circuit O2 cell (under typical use the cell
meets specifications for 1 year).

• Replace the disposable (plastic) flow sensors (under
typical use the non-offset flow sensors meet
specifications for a minimum of three months and the
offset flow sensors meet specifications for a minimum
of six months).

• Replace the autoclavable (metal) flow sensors (under
typical use the sensors meet specifications for a
minimum of one year).

• Replace the receiver filter (if equipped - active gas
scavenging only).

Datex-Ohmeda

approved service

This is the minimum level of maintenance recommended by
Datex-Ohmeda. Local regulations may contain additional
maintenance requirements. Datex-Ohmeda advocates compliance
with local regulations which meet or exceed this minimum level of
maintenance.

Minimum Frequency Maintenance

12 months Have a Datex-Ohmeda trained service representative

Breathing system maintenance

Replace any parts that are visibly cracked, chipped, distorted, or worn
when cleaning the breathing system.

complete the scheduled service maintenance checks, tests,
calibrations, and parts replacement as defined in the
Technical Reference manual.

M1132382 7-3

Aespire View

AB.74p.052

AB.74p.065

AB.74p.083

O2 cell replacement

WARNING Handle and dispose of O2 cells according to site

biohazard policies. Do not incinerate.

1. Pull the latch to unlock the flow sensor module.

2. Pull the flow sensor module out of the breathing system.

3. Remove the cable connector from the O2 cell, and unscrew the
cell counterclockwise.

Important Make sure that the o-ring is on the replacement O2 cell before

installation.

4. Install the replacement O2 cell and reconnect the O2 cell cable.

5. Put the flow sensor module back into the system and push the
latch closed to secure the flow sensor module.

6. Perform “O2 cell calibration” after O2 cell replacement.

7-4 M1132382

O2 cell calibration

WARNING Do not perform O2 cell calibration while the system is

Important It may take a new O2 cell 90 minutes to stabilize. If the O2 cell

7 User Maintenance

connected to a patient.

w The O2 cell must be calibrated at the same environment

pressure at which it will be used to monitor oxygen
delivery in the patient circuit.

w Operation at pressures other than the pressures present

during calibration may result in readings outside of the
stated monitoring accuracy.

calibration fails after a new O2 cell has been installed, wait 90
minutes and repeat the calibration.

21% O2 cell

calibration

Complete a 21% O2 cell calibration before performing the 100% O2
cell calibration.

1. Push the Menu key.

2. Select Setup/Calibration.

3. Select O2 Sensor Calibration.

4. Select 21% O2.

5. Remove the O2 cell from the circuit.

• Pull the latch to unlock the flow sensor module.

• Pull the flow sensor module out of the breathing system.

• Remove the O2 cell by unscrewing the cell counterclockwise.

This exposes the O2 cell to room air.

6. Select Start Calibration. ‘Calibrating . . .’ shows on the screen
while the O2 cell is being calibrated to the room air.

7. ‘Complete’ shows on the screen upon successful calibration:

• Reinstall the O2 cell.

•Select Go to Setup/Calibration Menu.

8. If the screen shows ‘Failure,’ repeat the 21% O2 cell calibration.

9. If the calibration fails after another attempt, perform a 100% O2
cell calibration. Then try the 21% O2 cell calibration again.

10. Replace the O2 cell if repeated failures occur.

M1132382 7-5

Aespire View

100% O2 cell

calibration

Zeroing flow sensor

Complete a 21% O2 cell calibration before performing a 100% O2 cell
calibration.

1. Make sure that the O2 cell is in the circuit.

2. After performing a 21% calibration, select 100% O2.

3. Push the O2 flush button for 5 seconds and set the O2 flow to
5 l/min and set other gases to minimal flow.

4. Select Start Calibration.

5. ‘Complete’ shows on the screen upon successful calibration.

6. If ‘Failure’ shows on the screen, repeat the 100% O2 cell
calibration.

• If the calibration fails after another attempt, decrease the

airway pressure and try the 100% O2 cell calibration again.

• If calibration fails after repeated attempts, perform a 21% O2

cell calibration. Then try a 100% O2 cell calibration again.

• If the 100% O2 cell calibration does not pass, replace the O2

cell.

7. Perform the “Breathing system tests” in the “Preoperative Tests”
section before using the system.

WARNING Do not perform calibration while system is connected to a

patient.

Note The system automatically corrects for zero offset when the flow

sensor connectors are unplugged and the system power is on.

1. Set the Bag/Vent switch to Bag.

2. Remove the flow sensor module.

• Pull the latch to unlock the flow sensor module from the

breathing system.

• Pull the flow sensor module out of the breathing system.

3. ‘No insp flow sensor’ and ‘No exp flow sensor’ show on the
display when the zeroing is complete.

4. Reinstall the flow sensor module.

5. Perform the “Breathing system tests” in the “Preoperative Tests”
section before using the system.”

7-6 M1132382

Prevent water buildup

Note Pooled water in the flow sensor or water in the sensing lines can

7 User Maintenance

Water is created from exhaled gas and a chemical reaction between
CO2 and the absorbent. Water buildup increases when the system is
used at low fresh gas flows. At low flows, more CO2 stays in the
absorber producing water and more moist exhaled gas remains in the
absorber.

cause inaccurate alarms. Small beads of water or a foggy
appearance in the flow sensors is acceptable.

To manage excess water:

• Empty the water reservoir in the absorbent canister when
changing the absorbent.

• Make sure that any water condensing in the breathing circuit
tubes is not allowed to drain into the flow sensors.

• Water condensation in the breathing circuit tubing might be
lessened by using a Heat and Moisture Exchange (HME) filter at
the airway connection.

• Install the condenser or EZchange canister option.

M1132382 7-7

Aespire View

7-8 M1132382

8 Setup and Connections

In this section Canister setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Pneumatic connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

How to install gas cylinders. . . . . . . . . . . . . . . . . . . . . . . . . 8-13

How to attach equipment to the top of the machine . . . . . . 8-14

M1132382 8-1

Aespire View

WARNING Datex-Ohmeda strongly recommends the use of O2

monitoring with this equipment. Refer to local standards
for mandatory monitoring.

w European, international, and national standards require

the following monitoring be used with this system:

• Exhaled volume monitoring.

• O2 monitoring.

• CO2 monitoring.

• Anesthetic agent monitoring be used when anesthetic
vaporizers are in use.

w Always make sure that the pipeline supply hoses and the

breathing circuit components are not toxic and will not:

• Cause an allergic reaction in the patient.

• React with the anesthetic gases or agent to produce
dangerous by-products.

w To prevent incorrect values or equipment malfunction,

use only cables, hoses, and tubing approved by
Datex-Ohmeda.

w This system operates correctly at the electrical

interference levels of IEC 60601-1-2. Higher levels can
cause nuisance alarms that may stop mechanical
ventilation.

w To help prevent false alarms from devices with high-

intensity electrical fields:

• Keep the electrosurgical leads away from the
breathing system, flow sensors, and O2 cell.

• Do not allow the electrosurgical leads to contact any
part of the anesthesia system.

• Do not use cell phones near the anesthesia system.

8-2 M1132382

8 Setup and Connections

w To protect the patient when electrosurgical equipment is

used:

• Monitor the correct operation of all life support and
monitoring equipment.

• Keep backup manual ventilation available in case the
electrosurgical equipment prevents safe use of the
ventilator.

w Do not use antistatic or electrically-conductive breathing

tubes or masks. They can cause burns if used near high
frequency surgical equipment.

w Use only reservoir bags that comply with EN1820 on this

system.

w Use only breathing tubes that comply with EN12342 on

this system.

w A malfunction of the medical gas central supply system

may cause all connected devices to stop.

M1132382 8-3

Aespire View

7

1

2

3

4

5

6

AB.74p042

AB.74p043

Canister setup

1. Canister support pin

2. Canister handle

3. Disposable Multi Absorber canister

4. Absorbent

5. Expiratory water reservoir

6. Canister release latch

7. Reusable Multi Absorber canister

Figure 8-1 • Canister

8-4 M1132382

8 Setup and Connections

WARNING Obey applicable safety precautions:

• Do not use the absorber with chloroform or
trichloroethylene.

• The Disposable Multi Absorber is a sealed unit which
should not be opened or refilled.

• The Disposable Multi Absorber cannot be disinfected
and is not autoclavable. Be aware that cross­contamination is possible.

• Avoid skin or eye contact with the contents of the
absorber. In the event of skin or eye contact,
immediately rinse the affected area with water and
seek medical assistance.

• Do not change the absorber during ventilation unless
the EZchange canister system is installed.

• Change absorbent often to prevent the buildup of
non-metabolic gases when the system is not in use.

• Inspect absorbent color at the end of a case. During
non-use, absorbent can go back to the original color.
Refer to the absorbent labeling for more information
about color changes.

• If the absorbent completely dries out, it may give off
carbon monoxide (CO) when exposed to anesthetic
agents. For safety, replace the absorbent.

• Desiccated (dehydrated) absorbent material may
produce dangerous chemical reactions when exposed
to inhalation anesthetics. Adequate precautions
should be taken to ensure that absorbent does not dry
out. Turn off all gases when finished using the system.

The absorber canister is available in two versions:

• Disposable Multi Absorber.

• Reusable Multi Absorber.

Both versions are removed and installed on the breathing system in
the same way.

Each canister holds 800 grams of loose absorbent. Datex-Ohmeda
recommends Medisorb

Both absorber versions should only be used with mixtures of air,
oxygen, nitrous oxide, halothane, enflurane, isoflurane, desflurane
and sevoflurane.

TM

absorbent.

M1132382 8-5

Aespire View

AB.74p058

When to change the

absorbent

Important Read the canister instructions completely before using the product.

A gradual color change of the absorbent in the canister indicates
absorption of carbon dioxide. The color change of the absorbent is
only a rough indicator. Use carbon dioxide monitoring to determine
when to change the canister.

Discard the absorbent when it has changed color. If left standing for
several hours, absorbent may regain its original color giving a
misleading indication of activity.

Removing a canister 1. Hold the canister by the handle and push on the release latch to

unlock the canister.

2. Remove the canister by tilting it downward and off the two
support pins.

8-6 M1132382

8 Setup and Connections

AB.75p088

AB.75p089

AC.20p003

Removing an

EZchange canister

1. Hold the canister by the handle and push the canister cradle
release latch to unlock the canister cradle.

2. Slide the canister up and out of the cradle.

Reusable Multi

Absorber canister

1. Turn the canister upside down and, using your thumbs, turn the
cover locking ring counterclockwise to unlock it.

filling

2. Push up to release the seal.

M1132382 8-7

Aespire View

AC.20p003

AC.20p0004

3. Lift off the cover to remove it.

4. Remove and properly discard the foam filters, the absorbent, and
any water in the reservoir.

WARNING Be careful when draining condensate from the absorber.

The liquid is caustic and may burn skin.

5. To clean and disinfect the canister, see “Absorber canister” in the
“Cleaning and Sterilization” manual.

6. Assemble canister.

• Place a new filter in the bottom of the canister.

• Pour absorbent into the canister.

• Place a new filter over the absorbent.

• Align the cover slots with the canister locking tabs and press

the cover down into place.

• Turn the cover locking ring clockwise to lock the cover in

place.

• Ensure cover is properly sealed to prevent leaks and spillage.

• Wipe off any absorbent dust.

Note Alignment of the arrows helps to indicate correct assembly.

8-8 M1132382

8 Setup and Connections

AB.82p001

AB.74p049

WARNING The filters must be in place to help prevent dust and

particles from entering the breathing circuit.

Electrical connections

Outlets Labels show outlet voltage ratings and circuit breaker amp ratings.

WARNING Equipment connected to electrical outlets that are not

7. When replacing the canister, make sure that it is seated properly
on the support pins or in the EZchange canister module before
latching it into place.

These are isolated outlets. Regularly test the leakage current.

isolated outlets can increase the leakage current.
Regularly test the leakage current.

M1132382 8-9

Aespire View

AB.74p048

AB.91p040

Mains inlet Arrow shows the mains power inlet and cord.

Serial port The system has an RS-232C electrical interface. The RS-232C

connector allows serial input/output of commands and data. The 15­pin connector is located on the back of the display unit.

The 15-pin female D connector - Data Communications Equipment
(DCE) configuration:

• Pin 1 - Monitor On/Standby.

• Pin 5 - Signal ground.

• Pin 6 - Receive data.

• Pin 9 - Monitor On/Standby Return.

• Pin 13 - Transmit data.

Pneumatic connections

CAUTION Use only medical grade gas supplies. Other types of gas

supplies may contain water, oil, or other contaminants
which could affect the operation of the pneumatic system.

The gas supplies provide gas to these optional devices through
internal connections:

• Venturi suction regulator (optional).

• Auxiliary O2 flowmeter (optional).

Pipeline Inlets

8-10 M1132382

8 Setup and Connections

AB.91p045

AC.82p001

Scavenging The scavenging assembly is located below the bellows on the

breathing system. Adapters may be necessary to interface to the
scavenging connector.

See the “Operation” section for more scavenging information.

Sample gas return

port

Connect the sample gas exhaust tube from the airway module to the
gas return port. Exhaust gas will be directed to the scavenging
system.

M1132382 8-11

Aespire View

1

2

3

4

5

AB.74p032

AB.74p189

1

2

AB.91p039

Suction regulator

(optional)

Auxiliary O2

flowmeter (optional)

Venturi regulators use the system air or O2 supply. Vacuum
regulators must be connected to an external vacuum supply.

1. External vacuum (non-venturi) connection

2. Venturi muffler

3. Collection bottle connection

4. Splash guard

5. Overflow safety trap

1. Auxiliary O2 outlet

2. Auxiliary O2 flow control

8-12 M1132382