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User's Manual
SERVO-i/s
Cleaning and Maintenance

TABLE OF CONTENTS
4|Introduction
1
7|Routine cleaning
2
26|Maintenance
3
SERVO-i/s, User's Manual
Infologic 1.45 3
| TABLE OF CONTENTS |

1 Introduction
Table of contents
5|Introduction1.1
5|General information1.2
5|Symbols1.3
5|Warning, Caution, Important and Note1.4
4SERVO-i/s, User's Manual
| 1| Introduction |

1.1 Introduction
Unless otherwise stated, the information in
this User´s Manual is valid for all SERVO-i/s
Ventilator Systems.
Here you will find the information needed to
clean and maintain the SERVO-i/s systems
safely.The manual is divided into three
sections:
•Introduction (mandatory information)
•Routine cleaning
•Maintenance
Instructions relevant only for either SERVO-i
or SERVO-s are marked. Parts included in
SERVO-i only:
•Battery module
•Y sensor
•CO2sensor
•Edi module
•Nebulizers
1.2 General information
As cleaning practices vary widely among
health care institutions, it is not possible for
Maquet to specify particular practices that will
meet all needs, or to be responsible for the
effectiveness of cleaning procedures carried
out in the patient care setting.
Maquet recommends methods that have been
validated using the specified equipment and
procedures outlined in this manual. Other
methods may work but are not covered by the
warranty unless Maquet has given written
permission.
1.3 Symbols
Hazardous waste The device
contains parts which must not be
disposed of with ordinary waste.
1.4 Warning, Caution, Important and
Note
WARNING! Indicates critical information
about a potential serious outcome to the
patient or the user.
CAUTION: Indicates instructions that must
be followed in order to ensure the proper
operation of the equipment.
Important: Indicates information intended
to help you operate the equipment or its
connected devices easily and conveniently.
Note: Indicates information requiring special
attention.
SERVO-i/s, User's Manual 5
| Introduction | 1|

CAUTIONS:
•All personnel should be aware of the risk
of parts being infected when
disassembling and cleaning the
ventilator.
•All disposable parts must be discarded
according to hospital routines and in an
environmentally safe way.
Important:
•Follow your hospital‘s guidelines for
handling infectious material when
handling any part of the SERVO-i/s
ventilator system.
•If possible, cleaning should be performed
immediately after use and always before
disinfection/sterilization. Blood or other
residues should not be allowed to dry
onto the devices.
•Water quality affects
cleaning/disinfection. Maquet
recommends drinking quality water as
the minimum quality level.
•Maquet recommends the use of Servo
Duo Guard bacterial filter or equivalent
to reduce the transmission of bacteria
from the patient via the expiratory
channel to the expiratory cassette. This
reduces the risk of infection spread and
prolongs the life of the expiratory
cassette due to reduced cleaning
requirements.
•The use of a washer-disinfector for
cleaning/disinfection is recommended if
bacterial filters are not used.
•Sterilization is normally not necessary for
the expiratory cassette, as it is not an
invasive instrument, but when applied,
use validated processes only.
Notes:
•Single use (i.e. disposable) items shall
not be reused. Cleaning of single use
items can damage the item and
compromise its intended use. Reuse of
single use items increases the risk of
spreading infections and compromises
the durability of the item.
6SERVO-i/s, User's Manual
| 1| Introduction |

2 Routine cleaning
Table of contents
8|Cleaning/disinfection procedures - a summary2.1
9|Preparations and dismantling2.2
11|Wiping and discarding2.3
13|Disinfection procedures2.4
16|Sterilization procedures (not recommended)2.5
17|Assembling2.6
18|SERVO Ultra Nebulizer cleaning2.7
20|Aerogen Pro Nebulizer2.8
23|SERVO-i NAVA system cleaning2.9
24|SERVO CO2analyzer cleaning2.10
25|Accessories2.11
SERVO-i/s, User's Manual 7
| Routine cleaning | 2|

2.1 Cleaning/disinfection procedures
- a summary
A summary of the procedures for cleaning,
disinfection and sterilization is given here.
Details for each step are given in the following
sections.
Cleaning when bacterial filter is used
Dismantle
Wipe off/discard
Assemble
Wipe off and discard filter, see page 11.
Disinfection when no bacterial filter is used
D2
D1
Dismantle
Wipe off/discard
Rinse
Disinfectant
Rinse
Washer-
Disinfector
Dry
Assemble
There are two disinfection procedures for the
expiratory cassette and associated parts, D1
and D2. In D1 (recommended) a
Washer-Disinfector (EN-ISO-15883-1) is used,
and in D2 a disinfectant is used.
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Sterilization with autoclave (NOT
recommended)
Dismantle
Wipe off/discard
Rinse
Dry
Dry
Autoclave
Assemble
Autoclaving will reduce the lifetime of the
expiratory cassette and is not recommend as
a cleaning method.
Sterilization is normally not necessary for the
expiratory cassette, as it is not an invasive
instrument, but when applied, use validated
processes only. See further instructions about
autoclaving on page 16.
2.2 Preparations and dismantling
D2D1
Dismantle
Wipe off/discard
Rinse
Disinfectant
Rinse
Washer-
Disinfector
Dry
Assemble
2.2.1 Preparations
•Switch off the ventilator using the switch
on the rear of the User Interface.
•Disconnect the ventilator from the power
and gas supply.
•Disconnect any optional equipment from
the power supply and from the ventilator.
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| Routine cleaning | 2|

2.2.2 Remove the expiratory cassette
SERVO-i
SERVO-i
•Lift the locking handle and pull out the
patient unit.
•Press the button on the expiratory cassette,
tilt it upwards and remove.
SERVO-s
•Press the locking arm on the rear to tilt the
User Interface.
•Press the button on the expiratory cassette,
tilt it upwards and remove.
WARNING! After removing the expiratory
cassette, do not pour any fluid into the
expiratory cassette compartment. Avoid
contact with electrical connectors.
Important: The expiratory cassette can be
exchanged between different SERVO-i/s
ventilator systems.The ventilator may be
used immediately* by connecting a clean
expiratory cassette.
* After replacing the expiratory cassette, a
Pre-use check must be performed (except in
emergencies, when it should be performed as
soon as possible).
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| 2| Routine cleaning |

2.3 Wiping and discarding
D2D1
Dismantle
Wipe off/discard
Rinse
Disinfectant
Rinse
Washer-
Disinfector
Dry
Assemble
•Wipe the ventilator and all removable parts
with a soft lint-free cloth moistened in soap
& water or detergent-based disinfectant.
3M Respirator Cleaning Wipes-
- Clorox Bleach Germicidal Wipes (may
cause discoloration)
- Super Sani-Cloth Germicidal Wipes (may
cause discoloration)
- Virkon S
- Accel TB (Virox 5)
Note: In case of more contaminated
surfaces, use ethyl alcohol (70%) or
isopropyl alcohol (70%). Avoid contact with
electrical contacts.
CAUTION: Do not immerse battery, CO2
analyzer, Edi module orY sensor module
(SERVO-i only) in any fluid.
•Discard disposable items:
- Servo Duo Guard viral/bacterial filter
- Servo Humidifier/HME
- Y sensors
- disposable patient tubing
- disposable airway adapter
- Edi catheters
- Aerogen Solo nebulizer
- disposable CO2adapter
Notes:
•Single use (i.e. disposable) items shall
not be reused. Cleaning of single use
items can damage the item and
compromise its intended use. Reuse of
single use items increases the risk of
spreading infections and compromises
the durability of the item.
Regularly check that the fan filter looks clean
(i.e. black). If dusty, remove (snap off/snap on)
and rinse in water. Shake out, ensuring that
the filter is free from excess water.
This is all the cleaning that is required when a
Servo Duo Guard filter (or equivalent) is used.
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| Routine cleaning | 2|

2.3.1 Rinse before disinfection
D2D1
Dismantle
Wipe off/discard
Rinse
Disinfectant
Rinse
Washer-
Disinfector
Dry
Assemble
If rinsing before disinfection is not included in
the washer disinfector program:
•Rinse the parts thoroughly in water
(<35°C/95°F).
•Let the water flow through the parts.
Important: Rinsing the cassette in water
(<35°C/95°F) immediately after use may be
a useful alternative to disinfection.
Immediate rinsing can remove particles and
reduces the risk of cross-contamination
between patients.
12 SERVO-i/s, User's Manual
| 2| Routine cleaning |

2.4 Disinfection procedures
D2D1
Dismantle
Wipe off/discard
Rinse
Disinfectant
Rinse
Washer-
Disinfector
Dry
Assemble
Important:
•The expiratory cassette is a precision
instrument and must be handled
carefully.
•After disinfection procedure, all parts
must be dried before use. If the
expiratory cassette is not dry it may not
pass the Pre-use check.
2.4.1 Washer-Disinfector (D1)
•Wash the parts with water only in a
washer-disinfector at a temperature of
85-95°C (185-203°F).
The following cleaning agent can be used:
•neodisher® MediClean forte
•Getinge MIS Detergent (for the expiratory
cassette)
1
•Place the expiratory cassette on its side
with the electrical connector (1) uppermost
as shown in the picture above.
Notes:
•The water pressure in the
washer-disinfector should not exceed
1.5 bar.
•The maximum water flow should not
exceed 10 l/min.
•The water must have free passage
through the cassette.
The expiratory cassette will last at least 200
cycles.
SERVO-i/s, User's Manual 13
| Routine cleaning | 2|

2.4.2 Disinfectant (D2)
Let the parts soak in disinfectant.
Pre-disinfectant
•Aniosyme DD1
•Gigazyme Plus
•Salvanios pH7
Disinfectant
•Alcohol (ethyl or isopropyl alcohol 70%)
•Anioxyde 1000
•Cidex OPA
•Actanios HLD (prion decontamination
agent), may cause discoloration
Important: Follow the disinfectant
manufacturer’s recommendations and
instructions, otherwise the cassette may be
damaged.
2.4.3 Rinse after disinfection (D2)
•Rinse the parts thoroughly in water to
remove all traces of disinfectant. Let the
water flow through the parts.
•Carefully shake and tilt the cassette, turn
upside down and repeat.
•Repeat these steps at least 5-7 times.
Important: Mineral deposits from
disinfectant on the expiratory cassette
affect the function. It is important to rinse
the expiratory cassette thoroughly.
Residues from chemicals can affect the
patient, cause leakage and extra stress on
the material.
14 SERVO-i/s, User's Manual
| 2| Routine cleaning |

2.4.4 Drying alternatives
D2D1
Dismantle
Wipe off/discard
Rinse
Disinfectant
Rinse
Washer-
Disinfector
Dry
Assemble
The expiratory cassette must be dried before
use (if not dry, the expiratory cassette may not
pass the Pre-use check).
There are several drying alternatives for the
expiratory cassette:
•Drying cabinet 1 hour in maximum 70°C
(158°F); if available, connect a 22 mm air
hose to the expiratory cassette for extra
drying effect, or
•Drying the cassette in room air 12-24 hours,
depending on surrounding conditions.
Recommended position in a drying cabinet
Recommended position in room air
If the Pre-use check is not passed after drying
then:
•Run the cassette in a ventilator system with
a test lung for 10 minutes, or
•Dry the cassette in room air (if no drying
cabinet is available) 12-24 hours, depending
on surrounding conditions.
CAUTION: Never dry the cassette by
applying high-pressure air as the internal
tubing may be damaged.
Note: Drying may not be necessary if the
washer-disinfector has a drying phase.
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| Routine cleaning | 2|

2.5 Sterilization procedures (not
recommended)
An autoclave may be used to sterilize the
expiratory cassette but it is normally not
necessary, as the expiratory cassette is not
an invasive instrument.
2.5.1 Number of cycles in the autoclave
The expiratory cassette will last at least:
•100 autoclaving cycles with 3 minutes
sterilization time at 134ºC (273ºF).
•30 autoclaving cycles with 18 minutes
sterilization time at 134ºC (273ºF).
2.5.2 Rinse
Rinse the parts thoroughly in water
(<35°C/95°F). Let the water flow through the
parts to remove organic matter, e.g. blood,
and other residues.
2.5.3 Drying before autoclaving
Before placing the expiratory cassette in an
autoclave, make sure that no water remains
inside the cassette. For drying instructions,
see page 15.
2.5.4 Autoclave
•Instrument parts should be autoclaved in a
validated process, typically at a temperature
of 134°C (273°F) for 3 minutes.
•Rubber parts should be autoclaved in a
validated process, typically at a temperature
of 121°C (250°F).
2.5.5 Drying after autoclaving
For drying alternatives, see page 15 .
16 SERVO-i/s, User's Manual
| 2| Routine cleaning |

2.6 Assembling
Rinse
Disinfectant
Rinse
Washer-
Disinfector
Dry
Assemble
Dismantle
Wipe off/discard
2.6.1 Re-inserting the expiratory cassette
SERVO-i
CLICK
SERVO-s
CLICK
•Hinge the expiratory cassette and press it
firmly down into lock position.
WARNING! Make sure that the
cassette clicks into position. Check that
it cannot be moved upwards and that the
button on top of the cassette is
completely ejected.
•Note on a log sheet that a routine cleaning
has been performed. Refer to hospital
guidelines.
2.6.2 PRE-USE CHECK
After cleaning, always perform a Pre-use
check. For more information, please refer to
the SERVO-i/s User's Manual.
If the Pre-use check fails:
•Carefully shake/tilt the cassette (5-7 times).
•Run the cassette in a ventilator system with
a test lung for 10 minutes.
•Re-do the Pre-use check.
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| Routine cleaning | 2|

2.7 SERVO Ultra Nebulizer cleaning
The Servo Ultra Nebulizer has been
discontinued.
The information in this document applies to
devices sold with versions 6.1 and earlier of
the SERVO-i Ventilator System.
Cleaning should be done after each patient or
according to hospital routine.
Perform a function test of the SERVO Ultra
Nebulizer after the cleaning. Refer to the
SERVO-i/s User's Manual.
Preparation
Wipe off/discard
Rinse
Disinfectant Autoclave
Washer-
Disinfector
Only the T-piece and nipples can be
autoclaved.
2.7.1 Preparation
•Disconnect the Servo Ultra Nebulizer from
the ventilator.
2.7.2 Wiping and discarding
•Unscrew the T-piece and discard the
medication cup.
The medication cup must be disposed of
in an environmentally safe way in
accordance with hospital regulations.
•Empty the buffer water from the nebulizing
chamber.
Important: Do not autoclave or use a
washer-disinfector when cleaning the
nebulizing chamber.
18 SERVO-i/s, User's Manual
| 2| Routine cleaning |

•Wipe the nebulizing chamber and control
cable with a soft cloth moistened in soap &
water or detergent-based disinfectant.
Note: In case of more contaminated
surfaces, use ethyl alcohol (70%) or
isopropyl alcohol (70%).
2.7.3 Rinse
Rinse the parts thoroughly in water
(<35°C/95°F).
2.7.4 Disinfection procedure
Washer-Disinfector
Wash the T-piece and nipples in a
washer-disinfector at a temperature of
85-95°C (185-203°F).
Important: Do not put the nebulizing
chamber in a washer-disinfector.
Pre-disinfectant
•Hexanios G+R
•Aniosyme DD1
•Gigazyme Plus
Important: Follow the disinfectant
manufacturer's recommendations and
instructions.
Disinfectant
•Let the T-piece and nipples soak in a
disinfectant such as
- Cidex OPA
- Anioxyde 1000
Important: Follow the disinfectant
manufacturer's recommendations and
instructions.
•Rinse the T-piece and nipples thoroughly
in water (<35°C/95°F).
2.7.5 Sterilization procedure
Autoclave
The T-piece and nipples can be autoclaved in
a validated process, typically at a temperature
of 134°C (273°F) for 4-7 minutes.
Check that the O-ring is correctly positioned.
Important: Do not autoclave the nebulizing
chamber.
SERVO-i/s, User's Manual 19
| Routine cleaning | 2|

2.7.6 Nebulizer membrane
Replacement of membrane if needed/used:
•Peel off the old membrane.
•Put a new membrane in place.
•Make sure the new membrane is properly
attached.This is easiest to see from the
inside.
•Check the SERVO Ultra Nebulizer for
leakage (Pre-use check, SERVO-i/s User's
Manual).
2.8 Aerogen Pro Nebulizer
Cleaning should be done after each patient or
according to hospital routine.
Perform a function test of the Aerogen Pro
Nebulizer after the cleaning. Refer to the
SERVO-i User's Manual.
Disinfectant Autoclave
Washer-
Disinfector
Rinse
Wipe off/discard
Preparation
Only the Aerogen Pro Nebulizer unit, T-piece
and neonate adapters can be autoclaved.
20 SERVO-i/s, User's Manual
| 2| Routine cleaning |