GE Aestiva 5 Operation Manual

GE Healthcare

Aestiva/5

Operation Manual - Part 2

Software Revision 4.X

Setup, Cleaning, Maintenance, Troubleshooting

User Responsibility

w

CAUTION

This Product will perform in conformity with the description thereof contained in
this Operation 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.

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.

AAA F 12345

This alpha character indicates the year of product
manufacture and when the serial number was assigned;
“D” = 2000, “E” = 2001, “F” = 2002, etc. “I” and “O” are
not used.

Aestiva, S/5, PSVPro, Tec 5, Tec 6

Datex-Ohmeda Inc.

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

and

Tec 7

are registered trademarks of

1/Introduction

Table of Contents

2/Cleaning and Sterilization

How to use this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

Maintenance summary and schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Operator maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Datex-Ohmeda approved service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Patient path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Scavenging path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Clean and sterilize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

To wash (by hand or machine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Autoclave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Special requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Assemble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Disassemble the patient path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7

i

3/Setup and Connections

Canister disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10

Disassemble the scavenging path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12

How to clean and disinfect the flow sensors . . . . . . . . . . . . . . . . . . . . . . . .2-13

How to clean and sterilize the optional CO

bypass assembly . . . . . . . . . 2-15

2

Breathing system setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Canister setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Pneumatic and electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

How to install gas cylinders (high-pressure leak test) . . . . . . . . . . . . . . . .3-11

Cylinder yokes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

DIN connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

How to install the gooseneck lamp (12 V) . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

How to attach equipment to the top shelves . . . . . . . . . . . . . . . . . . . . . . .3-15

How to install equipment on the foldout shelf . . . . . . . . . . . . . . . . . . . . . .3-17

Installation notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-18

1006-0939-000

i

Aestiva

4/User Maintenance

ii

Repair policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Manifold maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Expiratory valve maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

Receiver maintenance (active gas scavenging only) . . . . . . . . . . . . . . . . . .4-8

Flow sensor maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9

Breathing circuit maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Bellows maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Bellows tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

5/Alarms and Troubleshooting

6/Illustrated Parts

sensor calibration - 21% O

O

2

sensor calibration - 100% O

O

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

2

Flow sensor calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

How to prevent water build-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

About alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Alphabetical list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Breathing system problems (no alarm) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Electrical problems (power failure, etc.) . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Pneumatic problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Breathing system parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Top level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Main manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5

Exhalation valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

Bellows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9

Test tools and system parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

7/Theory of Operation and Specifications

Ventilator Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

ii

1006-0939-000

Table of Contents

Breathing system schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Electrical block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Pneumatic circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Suction regulators (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-12

flowmeter (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-12

O

2

Breathing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Breathing system specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-15

Pneumatic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-17

Flow specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18

iii

Index

Warranty

Electrical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20

Electrical fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-20

Battery information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-20

Electro-magnetic compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-20

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

Environmental requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-22

Ventilation operating specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

Aestiva ventilator accuracy data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-25

1006-0939-000

iii

Aestiva

iv

iv

1006-0939-000

1 Introduction

1-1

In this section

1006-0939-000

How to use this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

Maintenance summary and schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-1

Aestiva

How to use this manual

This is part two of the Aestiva operation and maintenance manual. It tells you
how to:

• Remove and clean parts

OO

22

22

mm

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ss

rr

••••SSSSeeeetttt uuuupppp tttthhhheeee ssssyyyysssstttteeeemm

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••••CCCCaaaalllliiiibbbbrrrraaaatttteeee tttthhhheeee OO

The second half of this section is a maintenance schedule.

The last section, troubleshooting, tells you what causes each alarm and what
you can do about it.

Use this manual together with Part 1, which includes the operating
instructions and preoperative checkout.

w

WARNING If an alarm occurs, safeguard the patient first, before

troubleshooting or repair procedures.

1-2

1006-0939-000

N

N

Symbols used in the manual or on the equipment

w

Warnings and

occur if you do not follow all instructions in this manual.

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

Cautions tell about a condition that can cause damage to the equipment. Read
and follow all warnings and cautions.

Other symbols replace words on the equipment or in Datex-Ohmeda manuals.
No one device or manual uses all of the symbols. These symbols include:

Cautions tell you about dangerous conditions that can

w

1 Introduction

1-3

l

O
o
q
p
œ
†

~

x

On (power)

Not autoclavable

Í

Off (power)

Type B equipment

m

Standby

Type BF equipment

µ

Standby or preparatory state for part of
the equipment

“ON” only for part of the equipment

H

Type CF equipment

Caution, ISO 7000-0434

w

“OFF” only for part of the equipment

wW

Direct current

Alternating current Dangerous Voltage

Protective earth ground

Attention, refer to product
instructions, IEC 601-1

This way up

Earth ground

y

r

1006-0939-000

Electrical input Electrical output

Pneumatic inlet Pneumatic outlet

Frame or chassis ground

REF

Stock Number

1-3

Aestiva

å
Y

t

T

+

-

Alarm silence button

Equipotential Systems with this mark agree with

Variability Read top of float

Variability in steps Vacuum inlet

Plus, positive polarity Suction bottle outlet

Minus, negative polarity

SN

O2+

Serial Number

the European Council Directive
(93/42/EEC) for Medical Devices
when they are used as specified in
their Operation and Maintenance
Manuals. The xxxx is the
certification number of the
Notified Body used by Datex­Ohmeda’s Quality Systems.

O2 Flush button

P

N

ˆ

z

Z

Lamp, lighting, illumination Cylinder

Movement in one direction Isolation transformer

Movement in two directions Linkage system

Lock Risk of Explosion

Unlock Low pressure leak test

1-4

1006-0939-000

1 Introduction

134°C

R
u
q
t

Autoclavable

Bag position/ manual ventilation

Mechanical ventilation

r

Open drain (remove liquid)

Close drain

U

Inspiratory flow

Expiratory flow

Q

O2 sensor connection End case

The primary regulator is set to pressure
less than 345 kPa.

European Union Representative

The primary regulator is set to
pressure less than 414 kPa.

1-5

1006-0939-000 1-5

Aestiva

Maintenance summary and schedule

These schedules show the minimum frequency. You will have to service the
equipment more frequently if you use it:

• In unusual conditions (dirty gas supplies, high temperature, high humidity,
etc.).

• More frequently than normal.

Operator maintenance

Examine all components and do the maintenance procedures more frequently
if necessary.

Minimum
Frequency

Maintenance

Daily • Clean the external surfaces.

• 21% O

calibration (circuit O2 sensor).

2

• Flow sensor calibration

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

necessary for Tec 6 vaporizers.

Monthly • 100% O

calibration (cIrcuit O2 sensor).

2

• Put Krytox (or a lubricant approved for use with 100%
) on all tee handle threads.

O

2

During cleaning
and setup

• Inspect the parts for damage. Replace or repair as

necessary

Annually • Replace the external o-rings on the vaporizer ports.

As necessary • Install new cylinder gaskets on cylinder yokes.

• Replace the absorbent in the absorber.

• Drain the breathing system.

• Drain the breathing circuit module.

1

• Drain the overflow trap on the optional suction

regulator.

• Replace the circuit O

• Replace the disposable flow sensors (plastic)

sensor.

2

2

• Replace the autoclavable flow sensors (metal)3.

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

1. This is included in the preoperative test procedure.

2. Under typical use the sensor meets specifications for 3 months

3. Under typical use the sensor meets specifications for 1 year.

1-6 1006-0939-000

Datex-Ohmeda approved

service

1 Introduction

Minimum
Frequency Maintenance

6 months Have an approved service person do the service tests

and scheduled service maintenance.

1-7

1006-0939-000 1-7

Aestiva

1-8 1006-0939-000

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

2 Cleaning and Sterilization

2-1

Obey applicable safety precautions:

• During the cleaning of the liquid collecting tray, 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.

• Read the material data sheet for each cleaning agent.

• Read the operation and maintenance manual for all sterilization equipment.

• Wear gloves and safety glasses. A damaged O

sensor can leak and cause

2

burns (contains potassium hydroxide).

• Do not breathe the fumes.

CCAAAAUUUUTTTTIIIIOOOONNNN

w CC

To prevent damage:

• Refer to the manufacturer’s data if you have questions about a cleaning agent.

• Do not use organic, halogenated, or petroleum based solvents, anesthetic
agents, glass cleaners, acetone, or other harsh cleaning agents.

• Do not use abrasive cleaning agents (such as steel wool, silver polish or
cleanser).

• Keep all electronic parts away from liquids.

• Do not permit liquid to go into the equipment housings.

• Do not soak synthetic rubber parts for more than 15 minutes. Swelling or faster
aging can occur.

• Only autoclave parts that are marked 134°C.

In this section Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Clean and sterilize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Disassemble the patient path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Canister disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Disassemble the scavenging path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

How to clean and disinfect the flow sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

How to clean and sterilize the optional CO

1006-0939-000 2-1

bypass assembly . . . . . . . . . . . . . . . . . 2-15

2

Aestiva

Summary

2-2

Patient path

The parts in Figure 2-1 send exhaled gas back to the patient. They may require
more frequent cleaning/sterilization than parts in Figure 2-2. Refer to your
hospital’s infection control policy.

Autoclave (134°C) or
wash (mild detergent pH <10.5)

AB.23.003

*

If plastic, refer to cleaning/disinfection
procedure. If metal, autoclave (134°C)

Wipe with a damp cloth.

*

Figure 2-1 • These parts return

exhaled

gas to the patient

AB.23.079

2-2 1006-0939-000

Scavenging path

AB.23.003

2 Cleaning and Sterilization

Autoclave (134°C) or
wash (mild detergent pH <10.5)

2-3

Figure 2-2 • These parts do not send gas back to the patient

AB.23.080

1006-0939-000 2-3

Aestiva

Clean and sterilize

2-4

To wash (by hand or

machine)

The Disassembly part of this section tells you how to remove parts for
cleaning.

Patient path

AB.23.085

Scavenging path

AB.23.083

Use a mild detergent (pH <10.5). Then, rinse and dry completely. All parts
except the O

User maintenance tells you how to disassemble parts and clean inside them if
necessary.

2-4 1006-0939-000

sensor, and flow sensors can be washed.

2

Autoclave

Metal Only

2 Cleaning and Sterilization

Patient path

2-5

AB.23.087

Upside down

AB.23.086

Scavenging path

AB.23.083

Autoclave at 134°C. Inspect the parts for deterioration. The User Maintenance
section tells you how to do this.

1006-0939-000 2-5

2-6

Aestiva

Special requirements

*

AB.23.088

* Hang the bellows upside down

(extended) to dry. If not, the

convolutions can stick together.

•To clean the circuit O2 sensor, wipe it with a damp cloth. Do not put the sensor
in liquid.

• To clean/disinfect metal/or plastic flow sensors, use the flow sensor
cleaning procedure. Do not get the connectors wet.

• Disassemble the bellows before you wash it. If not, it will take a very long time
to dry. Hang the bellows upside down to dry.

• Assemble the bellows before you autoclave. Autoclave the bellows upside
down.

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

CCAAAAUUUUTTTTIIIIOOOONNNN

w CC

Assemble

Do not use talc, zinc stearate, calcium carbonate, corn starch or
equivalent materials to prevent tackiness. These materials can go
into the patient’s lungs and airways and cause irritation or injury.

Do not put the circuit O2 sensor or flow sensor connector in liquid.

w Do not autoclave the Circuit O

sensor or the plastic flow sensors.

2

w Do not clean the interior surfaces of the flow sensors. Use a damp

on external surfaces only.

cloth

The Setup section tells you how to assemble the breathing system.

Inspect all parts for deterioration. Replace them if necessary.

The Preoperative tests in Part 1 (the first half of this manual), tell you how to
test the system for correct operation.

2-6 1006-0939-000

Disassemble the patient path

2 Cleaning and Sterilization

Step 1

Open the access panel.

Step 2

Push up on the latch located under the
flow sensor module.

Step 3

Remove the flow sensor module. You
will feel some resistance. Continue to
pull.

2-7

AA.96p.009

AA.96p.010

AA.96p.011

Step 4

Disconnect the cable and remove the
O

sensor.

2

AA.96p013, 014

1006-0939-000 2-7

2-8

Aestiva

Step 5

Completely loosen the thumbscrew on
the breathing circuit module.

AA.96p016

Step 6

Remove the module. You will feel some
resistance. Continue to pull.

Step 7

Push the metal button to the first stop.
Pull out the bag arm.

Step 8

Push the metal button to the
second stop and open the top panel.

AA.96p017

AA.96p018

AA.96p020

2-8 1006-0939-000

Step 9

Push the release button and remove
the bellows assembly (pull up).

Step 10

Remove the main manifold.

2 Cleaning and Sterilization

2-9

AA.96p021, 23

AA.96p024

Autoclave assemblies marked 134°C. Refer to the Section “Clean and
sterilize” for complete instructions. To assemble the circuit refer to the Setup
section.

1006-0939-000 2-9

Aestiva

Canister disassembly

2-10

w CCCCAAAAUUUUTTTTIIIIOOOONNNNTo prevent damage, pull the release handle forward. Then turn the handle

Step 1

Pull the release forward.

AA.96p026

wZ

Step 2

Turn the release clockwise.

AA.96p028

Step 3

Pull down and out on the canisters.

AA.96p029

2-10 1006-0939-000

Step 4

Push in the buttons on each side of the
top dish.

Step 5

Lift up the drain dish.

Remove the top dish and drain dish.

2 Cleaning and Sterilization

2-11

AA.96p053

AA.96p054

Continue with the next section or go to "Clean and sterilize". To assemble,
refer to the Setup section.

1006-0939-000 2-11

Aestiva

Disassemble the scavenging path

These parts send exhaled gas to the disposal system, not the patient.

2-12

Exhalation valve

Complete the basic disassembly
procedure.

Push in the latches and pull out the
exhalation valve.

AB.23.089

Scavenging reservoir

Loosen the knob and remove the rear
cover.

Pull the reservoir up and to the rear.

Twist and pull down to remove the tube.

AB.23.090

2-12 1006-0939-000

How to clean and disinfect the flow sensors

wwwwCCCCAAAAUUUUTTTTIIIIOOOONNNNDo not autoclave plastic flow sensors.

wwwwDo not use high-pressure gas, or brushes to clean the flow sensors.

wwwwDo not use cleaning solvents that are not approved for use with

Polycarbonates (e.g. CIDEX Plus).

CIDEX sterilization Both Datex-Ohmeda and the manufacturer of CIDEX (Johnson & Johnson)

have tested this procedure.

• CIDEX must be 14 day mixture, with activator vial REF REORDER # 2245

• One liter of this solution cleans four (4) flow sensors

2 Cleaning and Sterilization

2-13

Procedure (Figure 2-3) 1. Remove the flow sensor module from the absorber. Refer to “Disassemble

the patient path” in this section.

2. Remove the flow sensors from the module.

• Push in the latch.

• Pull off the cover.

• Remove the flow sensors.

3. Submerge the flow sensor and tubes in activated CIDEX solution. Keep the
connector dry.

4. Keep the solution in the tubes for the sterilization period.

5. Submerge the flow sensor and tubes in distilled water. Again, do not get the
connector wet.

6. Rinse as indicated in CIDEX instructions.

7. Do steps 5 and 6 again to remove all CIDEX.

8. COMPLETELY dry the flow sensor and the tubes before you use the sensor.

Use a dry syringe, or connect vacuum or pressure to remove all liquid from the
sensor (sensor, tubes, and connector):

•Minimum time: 1 min

•Maximum vacuum: 30 in Hg

•Maximum flow: 10 L/min flow

•Maximum pressure: 345 kPa (50 psi).

1006-0939-000 2-13

2-14

Aestiva

Step 2

Steps 3 and 4

Steps 5, 6 and 7

Step 8

Dry for > 1 min with these precautions:

• Maximum vacuum 30 in Hg

• Maximum flow 10 L/min

• Maximum pressure 345 kPa (50 psi)

Figure 2-3 • Steps 2-8

2-14 1006-0939-000

2 Cleaning and Sterilization

HHHHoooowwww ttttoooo cccclllleeeeaaaannnn aaaannnndddd sssstttteeeerrrriiiilllliiiizzzzeeee tttthhhheeee ooooppppttttiiiioooonnnnaaaallll CCCCOO

These instructions assume that the system has the optional CO2 bypass

feature installed.

11

SSSStttteeeepppp 11

Remove the absorber canisters. (Also described in “Canister disassembly” in this section.)

a. Pull the canister release handle forward.

w CCCCAAAAUUUUTTTTIIIIOOOONN

b. Turn the release handle clockwise.

c. Lift out the canisters.

Note: The canisters should drop under their own weight when released. If they do not, clean and lubricate the pins in
the drain dish and sockets in the base.

22

SSSStttteeeepppp 22

Release the CO2 bypass assembly by

pushing both buttons (one on each side
of the assembly).

NN

To prevent damage, pull the canister release handle forward before turning the

handle.

OO

bbbbyyyyppppaaaassssssss aaaasssssssseeeemmmmbbbbllllyy

22

22

yy

2-15

33

SSSStttteeeepppp 33

Pull down on the CO2 bypass assembly

(a) to remove it and lift the drain dish
(b) up.

a

b

1006-0939-000 2-15

2-16

Aestiva

44

SSSStttteeeepppp 44

Clean and sterilize the bypass
assembly:

a. Immerse the assembly into a

solution of mild detergent and
water.

b. Agitate the assembly in the

solution while repeatedly
actuating and releasing the
plate.

c. Rinse the assembly by

immersing it in clean water and
agitating it again with the plate
actuated and released.

d. Autoclave the assembly at

134°C.

e. Cool about 40 minutes at room

temperature.

a

Note: Optionally, the bypass assembly can be divided into two smaller sections for easier cleaning by releasing the
top clamp (a) and pulling the hose from the assembly. When reassembling, reattach the hose to the bottom part of the
assembly. Secure the hose with the clamp and pinch the clamp one notch past finger-tight with pliers.

55

SSSStttteeeepppp 55

Reinstall the bypass assembly:

a. Reinstall the drain dish.

b. Insert the bypass assembly.

c. Push back and adjust to locate

the access holes for the top
ports.

d. Push the buttons on each side of

the assembly and push the
assembly up; both buttons
should snap into place.

e. Pull down on the assembly to

make sure it is locked into place.

c

b

a

d

2-16 1006-0939-000

66

SSSStttteeeepppp 66

Reinstall the canisters:

2 Cleaning and Sterilization

a. Ensure seals and rim are free of soda lime dust.

b. Place the canisters in the drain dish.

c. Turn the canister release handle counterclockwise to its locked position while gently applying pressure on the

canisters to hold them against the canister guides.

77

SSSStttteeeepppp 77

Test the Bag circuit for leaks according to the Breathing System tests in the Appendix section of Part 1 of the Operation
manual.

• Do the test in both the Absorber mode and the Bypass mode.

• Ensure the alarm message “No CO
in section 3 of Part 1 of the Operation manual.

88

SSSStttteeeepppp 88

Before you use the system, complete the Preoperative Test procedure. Refer to the ‘Appendix - Preoperative Tests’
section of the Operation Manual Part 1, System Controls, Operation and Checkout.

Absorption” activates when in Bypass mode. See “CO2 Bypass mode operation”

2

2-17

1006-0939-000 2-17

2-18

Aestiva

2-18 1006-0939-000

3 Setup and Connections

IIIImmmmppppoooorrrrttttaaaannnnttttDatex-Ohmeda strongly recommends that you use O2 monitoring with this equipment.

Refer to local standards for mandatory monitoring.

IIIImmmmppppoooorrrrttttaaaannnnttttEuropean Standard EN 740 requires anesthetic agent monitoring when anesthetic

vaporizers are in use.

IIIImmmmppppoooorrrrttttaaaannnnttttEuropean Standard EN 740 requires CO2 monitoring during ventilation.

ww

WWWWAAAARRRRNNNNIIIINNNNGGGGSSSSAlways make sure that the pipeline supply hoses and the breathing circuit

ww

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.

ww

ww

To prevent incorrect values or equipment malfunction, use only
Datex-Ohmeda cables, hoses and tubing.

ww

ww

This system operates correctly at the electrical interference levels of IEC
601-1-2. Higher levels can cause nuisance alarms that may stop
mechanical ventilation.

ww

ww

To help prevent false alarms from devices with high-intensity electrical
fields:

• Keep the electrosurgical leads away from the breathing system and the

flow and oxygen sensors.

• Do not put the electrosurgical leads on any part of the anesthesia system.

3-1

ww

ww

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.

• Do not use conductive masks or hoses.

In this section Breathing system setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Canister setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Pneumatic and electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

How to install gas cylinders (high-pressure leak test) . . . . . . . . . . . . . . . . . . . . . . .3-11

How to attach equipment to the top shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15

How to install equipment on the foldout shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17

Installation notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-18

1006-0939-000 3-1

Aestiva

Breathing system setup

Step 1

To assemble the patient circuit, start at step 5.

3-2

Install the main manifold.

AA.96p024

Step 2

Install the Bellows.

•Make sure the release
button aligns correctly.

AA.96p022

Step 3

Gently close the control
panel.

AA.96p012

Step 4

Install the bag arm.

• Install a rebreathing bag
on the bag arm.

AA.96p019

3-2 1006-0939-000

Step 5

Identify the breathing circuit
module (Circle or Mapleson).

3 Setup and Connections

Look at the tabs on the rear or
the label on the front.

Step 6

Install the breathing circuit
module. You will feel some
resistance. Continue to push.

Step 7

Completely tighten the
thumbscrew.

AB.23.211

Circle

Mapleson

3-3

AA.96p017

AA.96p016

Step 8

Install the O2 sensor.

• Completely tighten the
sensor.

• Connect the cable.

AA.96p013, 014

1006-0939-000 3-3

3-4

Aestiva

Step 9

Install the flow sensor
module.

• You will hear a “click”
when it locks into
position.

• Refer to Note 1 or the User
Maintenance
section.

Step 10

Close the front panel.

AA.96p011

AA.96p009

Step 11

Connect the patient circuit.

Circle Module

AB.23.104

Mapleson D / Bain Module

To-fro

AB.23.152

3-4 1006-0939-000

Note 1

Flow sensor assembly

3 Setup and Connections

3-5

AA.96p039

AA.96p038

1006-0939-000 3-5

Aestiva

Canister setup

Each canister holds 1.35 kg of loose absorbent or 1.13 kg of commercially
packaged (pre-pack) absorbent. Datex-Ohmeda recommends Sodium or Bar­ium hydroxide based absorbent.

3-6

WWWWAAAARRRRNNNNIIIINNNNGGGG

w

Step 1

Pull the release forward.

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

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

If the absorbent completely dries out, it may give off CO (carbon monoxide)
the next time you use it. For safety, replace the absorbent.

AB.23.061

Step 2

Turn the release clockwise.

AB.23.061

3-6 1006-0939-000

Step 3

Push in the buttons and install
the top dish and drain dish.

Pull down to make sure the top
dish is locked in place.

Step 4

Fill the canisters with absorbent
and install them. Push down on
the drain dish if necessary.

3 Setup and Connections

AA.96p054

3-7

AA.96p029

Step 5

Turn the release
counter-clockwise.

Step 6

Push in the release.

AA.96p028

AA.96p026

1006-0939-000 3-7

Aestiva

Pneumatic and electrical connections

WWAAAARRRRNNNNIIIINNNNGGGG

wWW

Equipment connected to the electrical outlets can increase the leakage
current. Regularly test the leakage current.

3-8

Mains inlet

CCAAAAUUUUTTTTIIIIOOOONNNN

wCC

Use only medical grade gas supplies. Other types of gas supplies may
contain water, oil, or other contaminants.

The Aestiva gas supplies also supply these devices through internal connec­tions:

• The venturi suction regulator (optional)

• The external O

• Ventilator drive gas

• Pneumatic outlets

flowmeter (optional)

2

AA.96.116

Outlets

Labels show outlet voltage
ratings and circuit breaker
amp ratings.

AA.96.116

Tec 6 power

AA.96.095

3-8 1006-0939-000

Pipeline inlets

Label identifies the gas.

Pneumatic outlet

Labels identify the gas.

3 Setup and Connections

AA.96.116

3-9

Note: The outlet pressures
range from pipeline pressure
to 550-690 kPa when
cylinder supplies are used.

Scavenging

Adapters may be necessary.
Refer to the Illustrated Parts
section.

AA.96.116

AA.96.137

1006-0939-000 3-9

3-10

Aestiva

Suction regulator

Optional item.

Note: Venturi regulators use
the system Air or O

Standard regulators must be
connected to an external
vacuum supply.

supply.

2

External vacuum
(non-venturi)

Filter

Patient

External O2 flowmeter

Optional item.

Serial port

Refer to the communications
appendix for command and
data formats.

Collection Bottle

AA.96.172

AA.96.045

AA.96.116

3-10 1006-0939-000

How to install gas cylinders (high-pressure leak test)

3 Setup and Connections

Cylinder yokes

1. Find the cylinder wrench.

AA.96.123

2. Close the cylinder valve on the cylinder to be replaced.

AA.96.122

3. Fully loosen the tee handle.

AA.96.124

4. Open the cylinder yoke.

3-11

AA.96.125

5. Remove the used cylinder and the used gasket.

AA.96.126

6. Remove the cap from the cylinder valve on the new cylinder.

7. Point the cylinder valve away from all flammable items and items that can
be damaged by a release of pressure.

8. Quickly open and close the cylinder valve. This removes dirt from the

cylinder outlet.

1006-0939-000 3-11

3-12

Aestiva

w CC

CCAAAAUUUUTTTTIIIIOOOONNNN

No gasket or more than one gasket can cause a leak.

9. Install a new gasket.

10.Align the cylinder post with the index pins.

11.Close the yoke gate and tighten the tee handle.

12.Install a cylinder plug and gasket in all empty cylinder yokes.

13.Do a high-pressure leak test:

• Disconnect pipeline supplies.

• Disconnect all equipment from the pneumatic outlet and turn Off the
auxiliary flowmeter.

• Set the system switch to Standby.

• Open the cylinder.

• Record the cylinder pressure.

• Close the cylinder.

• If the cylinder pressure decreases more than 690 kPa in one minute,
there is a leak.

To repair a leak:

• Install a new cylinder gasket and tighten the tee handle.

• Do this step again. If the leak continues, do not use the system.

ww

ww

WWWWAAAARRRRNNNNIIIINNNNGGGGDo not leave gas cylinder valves open if the pipeline supply is in use. Cylinder supplies

could be depleted, leaving an insufficient reserve supply in case of pipeline failure.

DIN connections

1. Close the cylinder valve on the cylinder to be replaced.

AA.96.127

2. Loosen the adapter and remove the cylinder.

AA.96.129

3. Remove the cap from the cylinder valve on the new cylinder.

4. Point the cylinder outlet away from all items that can be damaged by a
release of high-pressure gas.

3-12 1006-0939-000

3 Setup and Connections

5. Open and immediately close the cylinder valve to remove dirt or contaminants.

6. Do a high pressure leak test:

• Disconnect pipeline supplies.

• Disconnect all equipment from the pneumatic outlet and turn Off the
auxiliary flowmeter.

• Set the system switch to Standby.

• Open the cylinder.

• Record the cylinder pressure.

• Close the cylinder.

• If the cylinder pressure decreases more than 690 kPa in one minute,
there is a leak.

To repair a leak:

• Tighten the cylinder connection.

• Do this step again. If the leak continues, do not use the system.

3-13

wwww WWWWAAAARRRRNNNNIIIINNNNGGGGDo not leave gas cylinder valves open if the pipeline supply is in use.

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

1006-0939-000 3-13

Aestiva

How to install the gooseneck lamp (12 V)

wWWWWAAAARRRRNNNNIIIINNNNGGGGUse ONLY 2.4 Watt bulbs. Higher wattage bulbs can get hot enough to burn

you.

3-14

1. Align the connector with the cable towards you.

AA.96.173

2. Push the connector firmly into the socket until you hear a click.

3. Move the light into position.

3-14 1006-0939-000

How to attach equipment to the top shelves

The basic system has two straps for equipment. Accessory shelves use clips
and straps.

w CCCCAAAAUUUUTTTTIIIIOOOONNNNEach accessory shelf has a weight limit of 23 kg (50 lb).

w Systems without accessory shelves have a weight limit of 23 kg (50 lb).

1. Install or find the clips:

•With an accessory shelf, install the clips in the two slots nearest to the
equipment.

3 Setup and Connections

3-15

• Systems without accessory shelves have the clips attached.

AA.96.130

AA71.145

1006-0939-000 3-15

3-16

Aestiva

2. Install the straps:

•With an accessory shelf:

A

Large equipment.

Loop one time

(A, B, C)

A

Small equipment.

Loop two times

(A, B, C, D)

B

C

B

C

AA.50.015

D

A

A

B

B

C

C

•Without an accessory shelf:

D

C

B

A

3. Fully tighten the straps.

4. Make sure that the straps hold the equipment in position.

AA.96.135

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

3-16 1006-0939-000

If you do not fully tighten the strap, equipment can fall off the shelf.

How to install equipment on the foldout shelf

This is a hidden shelf for equipment that you do not need to look at, adjust, or
touch. To access the shelf, you must remove the cylinders.

1. Make sure you have a cylinder wrench (if necessary).

2. Close the valves on all gas cylinders.

3. Remove all gas cylinders.

4. Loosen the thumbscrews and open the rear door.

3 Setup and Connections

3-17

AA.96.118

AA.96.119

AA.96.120

5. Put the equipment on the shelves.

6. Make sure the item does not hang over the raised edge.

7. Connect all cables and route them through the cutouts in the door.

8. Close the door.

9. Test the equipment.

AA.96.114

10.Install the cylinders.

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

1006-0939-000 3-17

Items that hang over the raised edge can fall off.

Aestiva

Installation notes

When the system is installed the service representative will check these set­tings and change them if necessary.

3-18

wWWWWAAAARRRRNNNNIIIINNNNGGGGThese settings can only be changed by Qualified Service personnel.

• Language

• Power up defaults: When you turn the system off, should it save the current
settings or go back to the facility defaults.

• Automatic calculation of

• Altitude

• Ventilator drive gas

• Heliox mode availability

◊E alarm limits during mechanical ventilation.

3-18 1006-0939-000

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

4 User Maintenance

TO PREVENT FIRES:

• Use lubricants approved for anesthesia or O2 equipment, such as Krytox

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

concentrations.

2

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

Obey infection control and safety procedures. Used equipment may
contain blood and body fluids.

®

4-1

1

.

In this section Repair policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Manifold maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Expiratory valve maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Receiver maintenance (active gas scavenging only) . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Flow sensor maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Breathing circuit maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Bellows maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Bellows tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15

sensor calibration - 21% O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

O

2

sensor calibration - 100% O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

O

2

Flow sensor calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

How to prevent water build-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

1.

® Krytox is a registered trademark of Dupont de Nemours E.I. & Company Inc

1006-0939-000 4-1

4-2

Aestiva

Repair policy

CCAAAAUUUUTTTTIIIIOOOONNNN

w CC

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

To ensure full reliability, have all repairs and service done by an authorized Datex­Ohmeda service representative. If this cannot be done, replacement and maintenance
of those parts listed in this manual may be undertaken by a competent, trained
individual having experience in the repair of devices of this nature.

No repair should ever be attempted by anyone not having 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 the manufacturer’s published
specifications.

Contact the Datex-Ohmeda Customer Service Center for service assistance. In all cases,
other than where Datex-Ohmeda’s warranty is applicable, repairs will be made at Datex­Ohmeda’s current list price for the replacement part(s) plus a reasonable labor charge.

4-2 1006-0939-000

Manifold maintenance

Step 1

Complete the basic
disassembly (Refer to the
Cleaning and Sterilization
section).

4 User Maintenance

AB.23.094

4-3

Step 2
(APL valve)

Remove the diaphragm.
Replace it if:

• The disk, cage, or
diaphragm is damaged.

• The diaphragm looks
worn.

• The diaphragm fits over
the rim.

1

Step 3
(Seals)

Loosen the thumbscrew and
remove the plate.

• Replace the seal if
damaged or worn.

AB.23.069

AB.23.070

1006-0939-000 4-3

Aestiva

Step 4
(Seals con.)

Loosen the thumbscrews.

4-4

AB.23.073

Step 5
(Seals con.)

Open the manifold (top
middle, and bottom parts).

AB.23.074

Step 6
(Seals con.)

Replace the parts if they are
damaged or worn.

Top

4-4 1006-0939-000

Bottom

Side

AB.23.071

Step 7

(Bag/Vent)

Replace the parts if they are
damaged or worn.

2

4 User Maintenance

4-5

AB.23.077

Step 8

Put the parts together

•Make sure all gaskets are
fully seated.

• Fully tighten the
thumbscrews.

AB.23.075

1. When you turn the APL knob, you change the pressure that is necessary to push the disk up and permit gas
to exit.

2. The Bag/Vent switch pushed down plungers to close the other path. In the Bag position, the vent path is
closed, etc.

Before you use the system, complete the preoperative test procedure. Refer to

"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

1006-0939-000 4-5

4-6

Aestiva

Expiratory valve maintenance

Disassemble the manifold and examine the seals at 12 autoclave cycles.

These conditions indicate a possible leak in the exhalation valve:

•A decrease in airway pressure during the inspiratory pause in the volume control
mode of ventilation.

• Alarms for low tidal volume.

• The ventilator circuit has a leak, but the bellows pass the bellows tests in this
section.

Step 1

Remove the exhalation valve
(Cleaning and Sterilization
section).

AB.23.089

Step 2

Remove the top cover.

AB.23.093

4-6 1006-0939-000

Step 3

Unscrew the lock ring (one
quarter turn) and remove the
cap.

Step 4

4 User Maintenance

AB.23.072

4-7

Put the parts together

• Align the dimples in the
cap with the valve seat.

• To install the top, align it
with the base and push
down.

AB.23.021

Dimples

Before you use the system, complete the preoperative test procedure. Refer to
"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

1006-0939-000 4-7

Aestiva

Receiver maintenance (active gas scavenging only)

A blocked filter decreases flow through the scavenging system. In extreme cases this can
open the high-pressure relief valve and vent to room air.

Note: Passive gas scavenging does not require maintenance.

Step 1

4-8

Remove the receiver:

• Loosen the thumbscrew.

• Remove the rear cover.

• Pull out and up on the
receiver.

Step 2

Replace the filter (friction fit
with gasket).

AB.23.091

AB.23.092

Filter

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

This system operates correctly at the electrical interference levels of IEC
601-1-2. Higher levels can cause nuisance alarms that may stop
mechanical ventilation.

• Always make sure that the rear cover is installed.

• Completely tighten the thumbscrew.

Before you use the system, complete the preoperative test procedure. Refer to
"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

4-8 1006-0939-000

Flow sensor maintenance

Step 1

Remove the flow sensor
module (Cleaning and
Sterilization section).
Push in the tab and remove
the cover.

Step 2

4 User Maintenance

4-9

AA.96p.037

Install the new sensor with
the arrows up.

Keep the tubes straight.

Step 3

Slide on the cover. Do not
pinch the tubes.

AA.96p.039AA.96p.038

Before you use the system, complete the preoperative test procedure. Refer to
"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

1006-0939-000 4-9

Aestiva

Breathing circuit maintenance

Disassemble the patient circuit module to replace check valves or seals.

Step 1

4-10

Remove the patient circuit
module (Cleaning and
Sterilization section).

AA.96p.017

Step 2

Hold in the tab.

AA.96p.041

Step 3

Remove the rear cover.
Note: The rear seal is keyed
to fit a specific module.

AA.96p.042

4-10 1006-0939-000

Step 4

Push in the tabs and remove
the top cover.

Step 5

Remove the seals.
Turn and pull to remove the
check valves.

4 User Maintenance

AA.96p.043

4-11

AA.96p.044

AA.96p.045

Do the steps in the opposite order to assemble the module.

Before you use the system, complete the preoperative test procedure. Refer to
"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

1006-0939-000 4-11

4-12

Aestiva

Bellows maintenance

Step 1

Remove the bellows from the
breathing system.

AA.96p.023

Step 2

Turn the housing
counter-clockwise and lift.

Step 3

Remove the bottom edge of
the bellows from the rim.

AA.96p.051

AA.96p.052

4-12 1006-0939-000

Step 4

Remove the disk from the
bellows.

4 User Maintenance

AA.96p.031

Step 5

Remove the ring from inside
the top of the bellows.

Step 6

Push the latch toward the
center and remove the rim.

4-13

AA.96p.032AA.96p.033

Step 7

Remove the pressure relief
assembly.

AA.96p.034

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

1006-0939-000 4-13

Do not disassemble the pressure relief valve. This can damage the seat or
diaphragm and cause injury to the patient.

Aestiva

Step 8

Push the latch towards the
center and remove the
locking tabs.

4-14

AA.96p.035

Step 9

Remove the seal.

AA.96p.036

Do these steps in the opposite order to assemble the bellows. If you see a dust-like
powder on the housing or the bellows, apply a thin layer of KRYTOX lubricant to the ribs
of the bellows housing. Make sure the lubricant is applied smoothly and there are no
lumps.

Make sure that:

• The arrow on the seal points up.

• You hear a double click when you install the rim.

• The rim is locked in position.

• The inner ring is correctly installed inside the top of the bellows.

• Only the bottom ring of the bellows fits over the rim.

• The housing is locked in position. You cannot lift it off.

4-14 1006-0939-000

Bellows tests

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

4 User Maintenance

Objects in the breathing system can stop gas flow to the patient. This can
cause injury or death:

• Do not use a test plug that is small enough to fall into the breathing
system.

4-15

• Make sure that there are no test plugs or other objects caught in the
breathing system.

The bellows assembly test does not replace the preoperative tests. Always
complete the tests in the section Preoperative Tests before you use the
system with a patient.

Step 1

Hold the bellows assembly
vertical and close the
ports (A and B).

This test makes sure that all components are correctly assembled. It is not an alternative
to a complete system checkout.

If the bellows operates correctly, install it in the system.

If there is a problem, disassemble the bellows. Look for and replace damaged parts.

A
B

1006-0939-000 4-15

4-16

Aestiva

Step 2

Invert the bellows. They must
not fall more than
100 mL/min.

If it does:

• The ports are not tightly
sealed.

• The bellows is incorrectly
installed.

• The seal inside the
bellows is not correctly
installed (with its groove
pointed up).

• Parts are damaged.

Step 3

Remove the plugs from the
ports. Permit the bellows to
fully extend.

Step 4

Close port C.

C

AA.96p.124

4-16 1006-0939-000

Step 5

The bellows must not fall
more than 100 mL/min.

If it does:

• The port is not tightly
sealed.

• The bellows or the
pressure relief valve is
not correctly installed.

• Parts are damaged.

4 User Maintenance

4-17

If the result for all the bellows tests was “passed,” install it in the system.

Before you use the system, complete the preoperative test procedure. Refer to
"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

1006-0939-000 4-17

Aestiva

4-18

O2 sensor calibration - 21% O

Note: The 21% O2 calibration must be done before the 100% O2 calibration. During O2

calibration the screen replaces O
perform calibration.

This procedure takes three minutes or less.

Step 1

Push the menu key.

AB.29.013

Step 2

Turn the knob to select
Setup/Calibration (highlight).

AB.90.036

2

data with - - -. Mechanical ventilation must be off to

2

AB29.002

Step 3

Push the knob to show the
next screen.

AB.90.037

AB.90.091

4-18 1006-0939-000

Step 4

Tur n, then push the knob to
select O

2 Sensor Cal.

Step 5

Select 21%. Then, push the
knob.

4 User Maintenance

AB29.002

AB.90.048

AB.29.012

4-19

AB.90.049

Step 6

Complete the steps shown on
the screen.

• Remove the O

sensor from

2

the circuit.

• Do not twist or stress the

cable.

•Make sure the cable is

connected.

Step 7

Select Start Cal.
Then, push the knob.

AB.48.080

The screen shows “Calibrating. . .”, followed by the result (“Complete” or “Failure”).

1006-0939-000 4-19

Aestiva

If the calibration fails:

• perform the calibration again.

• do a 100% O

sensor calibration. If this passes, repeat the 21% O2 calibration.

2

4-20

If the calibration passes, install the O

sensor. If necessary, do the 100% O2 calibration.

2

Before you use the system, complete the preoperative test procedure. Refer to
"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

4-20 1006-0939-000

O2 sensor calibration - 100% O2

Note: If w appears on the screen, the 21% O2 calibration must be completed before the

100% O

This procedure takes three minutes or less.

Step 1

calibration. Mechanical ventilation must be off to perform calibration.

2

4 User Maintenance

Push the menu key.

Step 2

Turn the knob to select
Setup/Calibration (highlight).

Step 3

Push the knob to show the
next screen.

4-21

AB.29.003

AB29.002

AB90.036

AB90.037

1006-0939-000 4-21

Aestiva

Step 4

Tur n, then push the knob to
select O

2 Sensor Cal.

AB29.002

AB90.048

4-22

Step 5

Select 100%. Then, push the
knob.

Step 6

With the O2 sensor in the

circuit, fill the circuit with
100% O2:

• Push the flush button.

• Then flow 100% O2 at

5 L/min. (circuit should
be open).

AB.29.046

AB.90.050

AB.90.088

Step 7

Select Start Cal.
Then, push the knob.

AB48.081

4-22 1006-0939-000

4 User Maintenance

The screen shows “Calibrating . . . ”, followed by the result (“Complete” or “Failure”).

If the calibration fails,

• perform the calibration again.

• decrease the airway pressure, and repeat the calibration.

Before you use the system, complete the preoperative test procedure. Refer to
"Appendix - Preoperative Tests" section of Part 1 of the Operation Manual.

4-23

1006-0939-000 4-23

4-24

Aestiva

Flow sensor calibration

Minimum Frequency: Weekly

The system automatically corrects for zero offset when you unplug the flow sensor
connectors with power on. You must stop mechanical ventilation before you calibrate the
flow sensors.

Step 1

Push up on the latch under
the flow sensor module.

AA.96p.010

Remove the flow sensor
module. You will feel some
resistance. Continue to pull.

Step 2

When calibration is complete,
the screen shows, "No Insp
flow sensor" and "No Exp
flow sensor".

No Insp Flow Sensor
No Exp Flow Sensor

Step 3

• Install the flow sensor
module.

4-24 1006-0939-000

How to prevent water build-up

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

During the cleaning of the liquid collecting tray, 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.

4 User Maintenance

Why is water buildup a

problem?

How much water is too

much?

Where does the water

come from?

Solutions • Drain the absorber each morning.

Pooled water in the sensor or water in the sensing lines causes false alarms.

A thin layer of water or a foggy look in the flow sensors is OK. Drops of water is too much.

Water comes from exhaled gas and a chemical reaction between CO2 and the soda lime
in the absorber.

At lower fresh gas flows more water builds up because less gas is scavenged and:

•More CO

•More moist, exhaled gas stays in the absorber.

• Drain all hoses as necessary.

• Flow sensor tubes must point up so that they do not collect water.

•With a circle breathing circuit, push the drain button before every case (listed in
preoperative procedures).

• If Check Flow Sensors alarm occurs during a VERY LONG case, replace the flow
sensors. Allow the original flow sensors to dry before you use them again.

stays in the absorber to react and produce water.

2

4-25

1006-0939-000 4-25

4-26

Aestiva

4-26 1006-0939-000

CCAAAAUUUUTTTTIIIIOOOONNNN

wCC

5 Alarms and
Troubleshooting

5-1

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

In this section About alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Alphabetical list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Breathing system problems (no alarm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-15

Electrical problems (power failure, etc.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16

Pneumatic problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18

1006-0939-000 5-1

5-2

Aestiva

About alarms

WWAAAARRRRNNNNIIIINNNNGGGG

w WW

If an alarm occurs, safeguard the patient first, before troubleshooting

or repair procedures.

Two areas on the screen show alarms. The area at the top of the display shows
most alarms. If there are more than 4 alarms at the same time, the lower priority
alarms cycle every two seconds.

During severe malfunctions that prevent mechanical ventilation and/or
monitoring, the area under the waveform shows minimum system messages.
During normal operation, this area shows instructions (push the knob, etc.).

Alarms

Alarm priority depends on the level of danger to the patient. High priority alarms
require immediate attention.

Priority Alarm tone Alarm silence Note

High 10 tones,

10 second pause,
repeat

Medium 3 tones,

25 second pause,
repeat

Low Single tone Tone does not repeat ---

120 seconds or
cannot be silenced

120 seconds ---

Reverse video

AB.90.025

5-2 1006-0939-000

5 Alarms and Troubleshooting

Alarm messages have three general causes.

• Malfunctions: Some malfunctions cause reduced function (for example, no
PEEP). Others prevent mechanical ventilation (Minimum shutdown).

• Patient monitoring: These are high and low limit settings that you adjust.

• Informational: Control settings or system conditions can change operation. For
example, if the audible circuit leak alarm is Off, the screen shows “Circuit Leak
Audio Off” as a low priority alarm.

5-3

1006-0939-000 5-3

5-4

Aestiva

Alphabetical list

The instructions in this section tell you what you can do:

• During a case to protect the patient

• After the case to repair a problem

This table does not include operator instructions.

There are two special types of alarms:

•Minimum monitoring alarms stop mechanical ventilation.

• Minimum shutdown alarms stop mechanical ventilation and monitoring.

Message Priority Cause Action/Concerns Repair

+15V Analog Out­of-Range

-15V Analog Out­of-Range

12 Hour Test Low System in use for more

A/D Converter
Failure

Absorber panel
open

Adjust Low Ve Limit Medium The audible circuit leak

Min. shutdown
(High)

Min. shutdown
(High)

Min. shutdown
(High)

Medium The top panel is not

Ventilator malfunction. Ventilate manually.

Ventilator malfunction. Ventilate manually.

than 12 hours without a
power-up self test.

Ventilator malfunction. Ventilate manually.

completely closed.

alarm is Off (Alarm menu)
but the low VE alarm is not
set.

Contact a qualified

Monitoring is not reliable.

Monitoring is not reliable.

To do the test, move the
system switch from Standby
to On.

Monitoring is not reliable.

Close the panel. - - -

Set the low VE alarm. - - -

service
representative.

Contact a qualified
service
representative.

Not necessary,
informational.

Contact a qualified
service
representative.

VE alarm is Off in SIMV or
PSVPro modes.

5-4 1006-0939-000

5 Alarms and Troubleshooting

Message Priority Cause Action/Concerns Repair

Apnea Alarm
Standby

Low Normal condition after

End Case, power-up, or
ACGO change from On to
Off

Apnea Alarm Off Low The cardiac bypass option

is selected (alarm limit
menu).

Aux Gas Outlet On Medium

(low after
acknowledged)

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

Backup Mode
Active

Battery Charger
Fail

Low SIMV-PC + PSV mode

entered.

Low The current in the battery

charging circuit is too
high.

Monitoring resumes after first
breath (mechanical) or 2
breaths within 30 seconds
(non-mechanical).

Apnea alarms are normally
turned off when this option is
selected.

Connect the patient circuit to
the auxiliary outlet. For
mechanical ventilation or
manual ventilation with
monitoring, select the
common gas outlet.

Spontaneous breath rate fell
below the set breath rate

The system is operational, but
may fail later depending on
what caused this alarm.

- - -

- - -

- - -

5-5

- - -

Contact a qualified
service
representative.

Battery Charging Low The battery is not fully

charged. If power fails,
the total backup time will
be less than 30 minutes.

Battery Current
High

Battery Failure
High

Low Battery current >

6 amps

for 10 seconds.

Low Battery voltage > 16 V for

10 seconds.

Battery Failure Low Low The battery voltage is too

low (<7 V) to supply the
system if power fails.

Leave the system plugged in
to charge the battery.

The system continues to
operate, but may fail.

The system continues to
operate, but may fail.

The battery does not have
enough charge to power the
equipment if power fails.
Leave the system plugged in
to charge the battery.

- - -

Contact a qualified
service
representative.

Contact a qualified
service
representative.

If the battery does
not charge in 24
hours, contact a
service
representative.

1006-0939-000 5-5

Aestiva

Message Priority Cause Action/Concerns Repair

5-6

Cal Flow Sensors Low The last flow sensor

calibration failed.

Calibrate O2

Low O

%>110% Does the sensor measure

2

Sensor

Canister open Medium The canister release is

open (large leak) without
a bypass mechanism.

Cannot Drive
Bellows

Low The internal manifold

pressure is higher than
Paw + tolerance.

Cardiac Bypass Low The alarm limit settings

are set for a patient on
cardiac bypass. Apnea
alarms are off.

Check Flow
Sensors

Medium
(low after
acknowledged)

No flow or negative flow
on inspiratory sensor
during inspiration in a
circle system or negative
flow on expiratory sensor
in expiration (for 6
breaths in a row).

Calibrate the flow sensors.
Look for water in the flow
sensor tubes. Dry if

Contact a qualified
service
representative.

necessary.

sensor.

2

21% O

in room air?

2

Calibrate O

Close the canister release. A switch checks the

release position.

Fill the bellows if empty. - - -

Use the alarm limits menu to

- - -

change this setting.

Are the flow sensors correctly
installed?

Inspect one way
valves (breathing

circuit module).
Water build-up in the flow
sensor tubes?

Replace flow sensor

module with the
Is a flow sensor tube cracked
or broken?

spare. Check the

condition of the flow

sensor and its tubing.

Circuit Leak Audio
Off

Low Control setting on the

Alarm limit menu.

This message tells you that
the audio alarm for circuit

- - -

leaks was turned off.

Connect O

Sensor Low The O2 sensor is not

2

connected to the cable.

Connect the sensor. Contact a qualified

service

representative to

replace the cable.

5-6 1006-0939-000

5 Alarms and Troubleshooting

Message Priority Cause Action/Concerns Repair

Control Settings
Input has Failed

Minimum
monitoring
(Medium)

CPU Failure Minimum

shutdown
(High)

CPU Internal Error Minimum

shutdown
(High)

Display Voltage
Out-Of-Range

Minimum
shutdown
(High)

Exp Flow Sensor

Low The system cannot read

Fail

Exp Reverse Flow Medium

(low after
acknowledged)

Ventilator malfunction. Ventilate manually.

Monitoring is still available.

Ventilator malfunction. Ventilate manually.

Monitoring is not reliable.

Ventilator malfunction. Ventilate manually.

Monitoring is not reliable.

Ventilator malfunction. Ventilate manually.

Monitoring is not reliable.

Operation continues with
the calibration data
stored in the sensor.

Flow through the

default values.

Replace the flow sensor.

Look at the check valves.
expiratory sensor during
inspiration (for 6 breaths
in a row).

Water build-up in the flow

sensor tubes?

Is a flow sensor tube cracked

or broken?

Contact a qualified
service
representative.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

- - -

Replace the
expiratory check
valve.

Check the condition
of the flow sensor.

5-7

Flow Valve (DAC)
Failure
Flow Valve (current)

Minimum
monitoring
(Medium)

Ventilator malfunction. Ventilate manually.

Monitoring is still available.

Contact a qualified
service
representative.

Failure

Gas Inlet Valve
Failure

Hardware
Watchdog Failure

1006-0939-000 5-7

Minimum
shutdown

1

(High)

Minimum
shutdown
(High)

Ventilator malfunction. Ventilate manually.

Monitoring is still available.

Ventilator malfunction. Ventilate manually.

Monitoring is not reliable.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

Aestiva

Message Priority Cause Action/Concerns Repair

5-8

Heliox Mode is On Low Control setting on

ventilation setup menu.

High O

2

Medium O2% > alarm high limit

setting.

High Paw High Paw is greater than Plimit.

The ventilator cycles to
expiration.

High Ve Medium The minute volume is

greater than the set high
limit. This alarm is
suspended for 9 breaths
after you change the
ventilator settings.

When Heliox is used, the
ventilator must adjust volume
calculations.

Is the limit set correctly? What
is the O

flow?

2

Did you just push Flush? Does
the sensor see 21% O2in

room air?

Are Plimit and other controls
set correctly? Look for
blockages.
Check the patient connection.

Check patient for
spontaneous breathing.
Adjust control settings.

- - -

Calibrate O

Replace O

sensor.

2

sensor.

2

Calibrate the flow
sensors.
Replace the receiver
filter.

- - -

High Vte Medium VTE is greater than high

alarm limit. This alarm is
suspended for 9 breaths
after you change the
ventilator settings.

Insp Flow Sensor
Fail

Low The system cannot read

the calibration data
stored in the sensor.

Inspiration
Stopped

Insp Reverse Flow Medium

High Drive gas safety switch

activated (high pressure)

Flow through the
(low after
acknowledged)

inspiratory sensor during

expiration (for 6 breaths

in a row).

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

Operation continues with
default values.
Replace the flow sensor.

Adjust controls. Check
systems for blockages.

Look at the check valves.

Water build-up in the flow
sensor tubes?

Is a flow sensor tube cracked
or broken?

- - -

- - -

- - -

Replace the
inspiratory check
valve.

Check the condition
of the flow sensor.

5-8 1006-0939-000

5 Alarms and Troubleshooting

Message Priority Cause Action/Concerns Repair

Internal Ventilator
Clock Too Fast

Minimum
shutdown

Ventilator malfunction. Ventilate manually.

(High)

Internal Ventilator
Clock Too Slow

Minimum
shutdown

Ventilator malfunction. Ventilate manually.

(High)

Invalid Circuit
Module

Low The system does not

recognize the type of
circuit module installed.
Normally the system uses
the ID tabs to Identify
circuits.

Limit Task Light Use Low The system is running on

battery power. Turn off the
light to save power.

Loss of Backup
Audio

Medium
(low after

The audio alarm will not
sound for a CPU failure.

acknowledged)

Contact a qualified

Monitoring is not reliable.

service
representative.

Contact a qualified

Monitoring is not reliable.

service
representative.

Make sure the module is
correctly installed. Look for
broken ID tabs or tape on the

Contact a qualified
service
representative

tabs

Turn off the light to extend

- - -

battery backup.

Monitor system operation. Contact a qualified

service
representative.

5-9

Low Battery
Voltage

Medium Voltage is <11.65V while

using battery power.

Low Drive Gas Pres Medium The ventilator did not

detect a rise in internal
pressure when the flow
valve opened.

Low O

2

High O2% < alarm low limit

setting

Manually ventilate the patient
to save power.

Manually ventilate the
patient.

Is the limit set correctly? Is
the O

flow sufficient? Does

2

the sensor see 21% O

in

2

room air?

Make sure power is
connected and
circuit breakers are
closed. Check
ventilator fuse.

Make sure that the
appropriate gas
supplies (O

or Air)

2

are connected and
pressurized.

Calibrate O2 sensor.

Replace O

sensor.

2

As sensors wear out,
the measured % O

2

decreases.

1006-0939-000 5-9

Aestiva

Message Priority Cause Action/Concerns Repair

5-10

Low Paw Medium Paw does not rise at least

4 cm from the lowest

pressure measured

during the last 20

seconds.

Low Ve Medium Exhaled minute volume

<low limit alarm setting.

This alarm is suspended

for 9 breaths after you

change the ventilator

settings.

Low Vte Medium Exhaled tidal volume <low

limit alarm setting. This

alarm is suspended for 9

breaths after you change

the ventilator settings.

Manifold Pressure
Sensor Failure

Minimum
monitoring

Ventilator malfunction. Ventilate manually. Contact a qualified

(Medium)

Are circuit connections OK?
Look at the Paw gauge on the
absorber.

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

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

Look for circuit
disconnection.

- - -

- - -

service
representative.

Memory (EEPROM)
Fail

Memory (flash)
Failure

Memory (RAM)
Failure

Memory
(Redundant
Storage) Fail

Memory (video)
Failure

Minimum
shutdown
(High)

Minimum
shutdown
(High)

Minimum
monitoring
(Medium)

Minimum
shutdown
(High)

The system cannot access

some stored values.

Default settings are used.
Ventilation is still possible but
service is necessary.

Ventilator malfunction. Ventilate manually.

Monitoring is not reliable.

Ventilator malfunction. Ventilate manually.

Monitoring is not reliable.

Ventilator malfunction. Ventilate manually.

Monitoring is still available.

Ventilator malfunction. Ventilate manually.

Monitoring is not reliable.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

5-10 1006-0939-000

5 Alarms and Troubleshooting

Message Priority Cause Action/Concerns Repair

Monitoring Only Medium A severe malfunction

prevents mechanical
ventilation. Other alarms
may also occur.

No Circuit Module Low The patient circuit module

is not installed.

No CO

Absorption Medium

2

(low after
acknowledged)

The canisters are open
(out of the circuit) but the
bypass mechanism
prevents a leak (optional
feature).

No Exp Flow Sensor

No Insp Flow

Medium
(low after
acknowledged)

Electrical signals show
the flow sensor is not
connected.

Sensor

Ventilate manually. Cycle
system power (On- Standby­On). If the alarm clears,
restart mechanical
ventilation.

Install a module. Refer to the
Setup section.

User setting. Close the
canister release to remove
CO

from exhaled gas

2

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

Contact a qualified
service
representative.

Optical sensors look
for tabs on the back
of the module. Is the
module assembled?
are the sensors
dirty?

- - -

- - -

5-11

No message, only
specific shutdown
message

High A severe malfunction

prevents mechanical
ventilation and
monitoring. Other alarms
may also occur.

Ventilate manually. Use a
stand-alone monitor. Cycle
system power (On- Standby­On). If the alarm clears,
restart mechanical

Contact a qualified
service
representative

ventilation.

No O

Pressure High

2

(cannot be
silenced)

The O2 supply has failed. Air flow will continue.

Ventilate manually if
necessary. Connect a pipeline
supply or install an O

- - -

2

cylinder.

Flush Failure Low The pressure switch that

O

2

detects flush flow has
seen a very long flush
(≥30 seconds).

This alarm occurs if you hold
down the Flush button for
more than 30 seconds.

If the alarm occurs
when flush is not in
use, contact a
qualified service
representative.

1006-0939-000 5-11

Aestiva

Message Priority Cause Action/Concerns Repair

5-12

O2 Sensor out of

circ

On Battery - Power
OK?

Patient Circuit
Leak?

Paw < -10 cmH

O High Subatmospheric pressure

2

Low O2 sensor not installed in

breathing circuit module;

sensor not measuring gas

in breathing circuit.

Medium
(low after
acknowledged)

The mains supply is not

connected or has failed

and the system is using

battery power.

Medium Exhaled volume <50% of

inspired volume for at

least 30 seconds

(mechanical ventilation).

(<-10 cmH

O).

2

Install a breathing circuit
module and an O

sensor.

2

Ventilate manually to save
power. At full charge, the
battery permits approx. 30
minutes of mechanical
ventilation.

Check breathing circuit and
flow sensor connections.

Check patient condition,
spontaneous activity?
Increase fresh gas flow. Look
for high flow through gas
scavenging.

- - -

Make sure power is
connected and
circuit breakers are
closed. Check
ventilator fuse.

- - -

Calibrate the flow

2

sensors.

With active
scavenging, check
the negative relief
valve on the receiver.

PEEP Not Achieved Low Pmin does not reach

within 2 cmH

O of PEEP

2

by the end of mechanical
expiration for 6
consecutive breaths.

Positive SIB Vref
Out-of- Range

Minimum
shutdown

Ventilator malfunction. Ventilate manually.

(High)

Pres Mode Not
Avail

Medium
(Pressure,
PSVPro and
SIMV modes)

Manifold pressure not
tracking airway pressure,
or manifold pressure
≤ -15 cmH

O.

2

Low (Volume
mode)

Check tubing connections.
Rate and/or I:E ratio may
prevent ventilator from
reaching desired PEEP level.

Monitoring is not reliable.

Pressure control mode and
PEEP are not available.
Switch to Volume mode or
ventilate manually.

- - -

Contact a qualified
service
representative.

Contact a qualified
service
representative.

5-12 1006-0939-000

5 Alarms and Troubleshooting

Message Priority Cause Action/Concerns Repair

Pres/Vol Mon
Inactive

Pressure Limit
Switch Failure

Replace O

Sensor Low O2% < 5% Makes sure patient receives

2

Medium Outlet selection switch is

set to auxiliary gas outlet.

Minimum
monitoring
(Medium)

A pressure safety switch
activated at a Paw <90
cmH

O and Pmanifold

2

<80 cm H

O.

2

Select Gas Outlet Medium Fresh gas may not flow to

the patient. Auxiliary gas
outlet is On, but flow
sensors have seen 3
breaths in patient circuit
during the last 30
seconds.

Connect the patient circuit to
the auxiliary gas outlet or set
the switch to the common gas
outlet for normal operation.

Ventilate manually.
Monitoring is still available.
Extreme control combinations
may cause this alarm.
Check control settings.

O

. Does the sensor see 21%

2

in room air? Use different

O

2

monitor.

Select the common gas outlet
or connect the patient circuit
to the auxiliary outlet.

- - -

Contact a qualified
service
representative.

Calibrate O2 sensor.

Replace O

sensor.

2

Note: the bag arm
will not ventilate a
patient at the
auxiliary outlet.

5-13

Service Calibration Low Internal calibrations are

necessary for maximum
accuracy.

Software Error Minimum

Ventilator malfunction. Ventilate manually.
shutdown
(High)

Software
Watchdog Failure

Minimum
shutdown

Ventilator malfunction. Ventilate manually.

(High)

Sustained Airway
Pressure

Minimum
shutdown

Paw > 100 cmH

seconds.

O for 10

2

The system is operational. Contact a qualified

service
representative.

Contact a qualified

Monitoring is not reliable.

service
representative.

Contact a qualified

Monitoring is not reliable.

service
representative.

Check tubing for kinks,
blockages, disconnects.

Calibrate the flow
sensors.

(High)

1006-0939-000 5-13

Aestiva

Message Priority Cause Action/Concerns Repair

5-14

Sustained Paw High Paw > sustained pressure

limit for 15 seconds

3

.

System Leak? Medium Delivered volumes do not

match set volumes.

Vaux_ref Out-of­Range

Minimum
shutdown

Ventilator malfunction. Ventilate manually.

(High)

Vext_ref Out-of­Range

Minimum
shutdown

Ventilator malfunction. Ventilate manually.

(High)

Volume Apnea Medium No mechanical breaths or

spontaneous breaths >20
mL in last 30 seconds.

Check tubing for kinks,
blockages, disconnects.

If you are using Heliox, select
Heliox on the ventilator setup
menu. Look for leaks in the
manifold. Compare set to
delivered volumes.

Monitoring is not reliable.

Monitoring is not reliable.

Check patient. Bag as needed.
Check for disconnects. If the
patient is on a heart lung
machine, select Cardiac Bypass
on the main menu.

Calibrate the flow
sensors.

Calibrate the flow
sensors.
Drain water buildup
from the breathing
system.

Contact a qualified
service
representative.

Contact a qualified
service
representative.

- - -

Vol Apnea > 2 min High No mechanical breaths or

See above. - - ­spontaneous breaths >20
mL in last 120 seconds.

Vt Not Achieved Low Tidal volume measured by

inspiratory flow sensor
< set value 6 breaths in a
row after the first minute

Adjust controls to supply

adequate tidal volumes.

Check I:E; Plimit; and volume

settings.

Possible leak.

of mechanical ventilation.

Vte > Insp Vt Medium Expired volume > inspired

Check patient condition. - - ­volume for 6 breaths with
a circle module.

1. When power is first turned on.

2. Flow sensors are also used to measure pressures.

3. The sustained pressure threshold is calculated from the pressure limit setting. When mechanical ventilation is on, the sustained limit is calculated as
follows: for pressure limits < 30 cmH2O, the sustained pressure limit is 6 cmH2O; for Plimit between 30 and 60 cmH2O, the sustained limit is 20% of

the pressure limit (Plimit); for pressure limits > 60 cmH
the sustained pressure limit increases by PEEP - 2 cmH
pressure limit is calculated as follows: for pressure limits ≤ 60 cmH
limits > 60 cmH

5-14 1006-0939-000

O, the sustained pressure limit is 30 cmH2O.

2

O, the sustained pressure limit is 12 cmH2O. If both PEEP and mechanical ventilation are on,

2

O (the compensated weight of the bellows). When mechanical ventilation is off, the sustained

2

O, the sustained pressure limit is 50% of the pressure limit (Plimit); for pressure

2

Breathing system problems (no alarm)

Symptom Problem Solution(s)

Gas scavenging flow is too low. Suction supply problem. Use a different suction

5 Alarms and Troubleshooting

supply.

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.
Use manual ventilation, if
necessary.

The ventilator does not correctly
identify the breathing circuit
module.

Filter blockage. Active
systems have a flow
indicator to show this.

Leak through Bag/Vent
switch. Causes include dirt
or damage to the o-ring.

Ventilator or absorber
malfunction.

Broken identification tabs. Remove the module and look

Dirt on the optical sensors
that read the tabs.

Ventilator malfunction. Ask a qualified service

Replace the filter. Refer to
“Disassemble the scavenging
path” in Section2, Cleaning
and Sterilization.

Refer to “Manifold
maintenance” in Section 4,
User Maintenance.

Ventilate manually. Ask a
qualified service
representative to repair the
system.

at the tabs on the rear. If there
is damage, use a different
module.

Use a DAMP alcohol prep to
gently clean. Squeeze dry the
prep before you use it.

representative to repair the
system.

5-15

APL valve does not operate
correctly.

Bellows falls > 100 mL/min
during bellows tests.

1006-0939-000 5-15

APL valve problem. Replace APL Valve seal and

diaphragm - Refer to User
Maintenance.

Leak in the breathing
system.

Check/clean/reposition the
pressure relief valve. If the
problem persists, replace the
pressure relief valve, bellows
base, or bellows assembly.

Aestiva

Electrical problems (power failure, etc.)

wwwwWWWWAAAARRRRNNNNIIIINNNNGGGGIf a circuit breaker opens frequently, do not use the system. Have

an approved service representative repair the system

Symptom Problem Solution

5-16

Mains indicator is not on. The electrical power

cable is not connected.

The inlet circuit breaker
(toggle switch) is open.

The power cable is
damaged.

The electrical socket the
power cable connects to
has no power.

An internal fuse is open. Have a service

The electrical outlets do not
have power but the mains
indicator is on.

One electrical outlet does not
have power.

A circuit breaker opens
frequently.

The main outlet circuit
breaker is open.

The outlet circuit breaker
is open.

Equipment connected to
the outlet(s) uses more
current than the circuit
breaker rating
(Figure 5-1).

The equipment
connected to the outlet
has a short.

Connect the power cable.

Close the circuit breaker
(Figure 5-1).

Replace the power cable.

Use a different electrical
socket.

representative repair the
system.

Close the circuit breaker.

Close the circuit breaker.

Use a different power
supply for some of the
equipment.

Do not use the equipment
until it is repaired.

Tec 6 has no power. Not plugged into outlet. Connect power cable.

5-16 1006-0939-000

5 Alarms and Troubleshooting

Out

(No Power)

In

(OK)

AA.96.109

123

Open

(No Power)

Closed

(OK)

AA.96.108

5-17

AB.29.007

5

4

AA.96.117

1. Outlet CIrcuit Breakers*

2. Master Circuit Breaker (all outlets)*

3. Inlet Circuit Breaker*

4. Ventilator Fuse

5. Mains Indicator

* Labels show ratings.

Figure 5-1 • Circuit breakers, fuse, and the mains indicator

1006-0939-000 5-17

Aestiva

Pneumatic problems

Symptom Problem Solution

High-pressure leak Controls are not set correctly. Set the system switch to

Standby and the auxiliary
flowmeter to Off.

5-18

Equipment connected to pneumatic
outlet.

High-pressure leak Incorrect cylinder connection (cylinder

yokes).

Incorrect cylinder connection (DIN
connection.)

Low-pressure leak with
a vaporizer on.

The vaporizer is not correctly installed. Correctly install the

The vaporizer fill spout is loose (fill port
type vaporizer).

Vaporizer port o-rings (external) are
damaged or not installed.

A vaporizer malfunction (the leak stops if
you use a different vaporizer in the same
position).

A port valve malfunction (the leak
continues if you use a different vaporizer
in the same manifold position).

Disconnect the
equipment.

Make sure that there is
only one cylinder gasket,
the gasket is in good
condition, and the
T handle is tight.

Make sure the nut is tight.

vaporizer.

Tighten the fill spout.

Install new o-rings.

Send the vaporizer to a
Datex-Ohmeda Service
Center.

Have an approved service
person repair the vaporizer
manifold.

CCAAAAUUUUTTTTIIIIOOOONNNN::::

wCC

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

5-18 1006-0939-000

6 Illustrated Parts

6-1

In this section Breathing System Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Main manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Exhalation valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

Bellows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Test tools and system parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10

1006-0939-000 6-1

Aestiva

Breathing system parts

Top level

Item Description (Figure 6-1) Stock Number

1 Flow sensor module (cover & holder) 1406-8208-000

a. Cover only 1406-3401-000

b. Holder only 1406-3400-000

2 Flow sensor (plastic) 1503-3856-000

Flow sensor (metal - autoclavable) 1503-3244-000

6-2

3O

4Breathing circuit module, circle 1406-8102-000

5 Bag arm long (adjustable) 1406-3350-000

6 Main manifold assembly 1406-8209-000

7Autoclavable Bellows Assembly 1406-8105-000

8 Blank, pop-off valve 1406-3240-000

9 Exhalation valve assembly 1503-8114-000

10 Rear column cover 1406-3455-000

11 Gas scavenging (4 options) --------

sensor, cell 6050-0004-110

2

O-ring 1406-3466-000

Breathing circuit module, Mapleson/Bain 1406-8211-000

Bag arm short (not adjustable) 1406-3380-000

Active gas scavenging assembly, 6.35 mm
(ANSI, Not European Community)

Active gas scavenging assembly,
30 mm threaded outlet

1406-8216-000

1406-8214-000

Passive gas scavenging assembly, 30 mm
ISO taper

Passive gas scavenging assembly, 25 mm
taper (DEU)

12 AGSS nylon filter, 225 µ 1406-3521-000

6-2 1006-0939-000

1406-8215-000

1406-8217-000

6 Illustrated Parts

Item Description (Figure 6-1) Stock Number

13 Upper dish (2 options) ------

Upper dish absorber plastic (seal not

1406-3413-000

included)

bypass assembly metal (seal not

CO

2

1406-3500-000

included)

14 Upper seal 1406-3414-000

15 Tube corrugated 210 mm 1400-3009-000

16 Elbow transfer tube 1406-3576-000

17 Transfer tube 1406-3575-000

18 Drain dish assembly 1406-8218-000

19 Plug, sight glass-drain 0229-2080-100

O-ring, plug 0210-0594-300

20 Canister 0229-3015-800

--- Not Shown

Upper seal, upper dish, corrugated tube,

1406-8207-000

drain dish, canisters

Barb cap, passive scavenging 1406-3542-000

6-3

1006-0939-000 6-3

Aestiva

6-4

6

7

5

AB.23.095

8

9

4

3

2

1a

1b

* Active scavenging systems only

Figure 6-1 • Breathing system top assemblies

10

1112*13141516171820 19

6-4 1006-0939-000

Main manifold

2c

2b
2a

3

6 Illustrated Parts

11

AB.23.096

10

9

8

6-5

7

6

4

5

2

2

2

1

AB.23.071

Top Bottom

Figure 6-2 • Main manifold

1006-0939-000 6-5

Aestiva

Item Description (Figure 6-2) Stock Number

1 Seal, main manifold, APL/AGSS 1406-3316-000

2 Seal, bag/vent assy (a, b, c)

a. O-ring (Qty 2) 1406-3278-000

b. Poppet (Qty 2) 1406-3279-000

c. Seal only 1406-3314-000

3 Plate, top, main manifold 1406-3300-000

4 Plate, bottom main manifold 1406-3303-000

5 Seal, Main Manifold, Absorber 1406-3315-000

6 Body manifold, main 1406-3301-000

6-6

7 APL diaphragm assembly 1406-3331-000

8Manifold APL/AGSS 1406-3302-000

9 Split ring (Qty 3) 1406-3319-000

10 Thumbscrew, M6x43 mm w/10 mm Head 1406-3306-000

11 M6 x28.5 mm Thumbscrew (Qty 2) 1406-3305-000

6-6 1006-0939-000