Maquet SERVO-air User manual

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User's Manual
SERVO-air Ventilator System
Cleaning and Maintenance

Table of contents
4|Introduction
1
7|Patient unit and user interface
2
11|Expiratory cassette
3
15|O2cell (maintenance)
4
17|Inspiratory channel (maintenance)
5
20|Aerogen Pro nebulizer
6
23|Accessories
7
24|Recommended intervals and disinfectants
8
SERVO-air Ventilator System, User's Manual
Infologic 1.18 3
| Table of contents |

1 Introduction
Table of contents
5|Introduction1.1
5|General information1.2
5|Safety guidelines1.3
6|Symbols1.4
4SERVO-air Ventilator System, User's Manual
| 1| Introduction |

1.1 Introduction
Unless otherwise stated, the information in
this User's Manual is valid for the SERVO-air
ventilator system.
Here you will find the information needed to
safely clean and maintain the ventilator
system.
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 Safety guidelines
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.
CAUTIONS:
•All personnel should be aware of the risk
of parts being infected when
disassembling and cleaning the ventilator
system.
•The expiratory channel and expired gas
from the exhaust port may be
contaminated.
•All disposable parts must be discarded
according to hospital routines and in an
environmentally safe way.
SERVO-air Ventilator System, User's Manual 5
| Introduction | 1|

Important:
•Follow your hospital's routines for
handling infectious material when
handling any part of the ventilator
system.
•If possible, cleaning should be performed
immediately after use and always before
steam autoclaving/disinfection. Blood or
other residues should not be allowed to
dry onto the devices.
•Water quality affects
cleaning/disinfection. Maquet
recommends drinking water quality 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
cassette to the ambient air.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.
•Steam autoclaving is normally not
necessary for the expiratory cassette, as
it is not an invasive instrument, but when
applied, use processes recommended
by Maquet.
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.
•Maquet recommends that the equipment
is inspected regularly.
•A preventive maintenance must be
performed by authorized personnel at
least once every year as long as the unit
is not used more than normal. Normal
operation during one year is estimated
to correspond to approximately 5000
hours of operation.The current operating
time and time to next preventive
maintenance is presented in SERVICE &
SETTINGS/BIOMED/STATUS/General
on the user interface.
1.4 Symbols
Hazardous waste The device
contains parts which must not be
disposed of with ordinary waste.
Special waste
This product contains electronic
and electrical components.
Discard disposable, replaced and
left-over parts in accordance with
appropriate industrial and
environmental standards.
6SERVO-air Ventilator System, User's Manual
| 1| Introduction |

2 Patient unit and user interface
2.1 Preparations
Note: Cleaning should be done after each
patient or according to hospital routines.
•Switch off the ventilator system using the
on/off switch on the patient unit.
•Disconnect the ventilator system from the
mains power and gas supply.
•Disconnect any optional equipment from
the mains power and from the ventilator
system.
•Discard disposable items according to
hospital routines and environmental
regulations.
- Servo Duo Guard viral/bacterial filter
- SERVO humidifier/HME
- disposable patient tubing
- disposable airway adapter
- Aerogen Solo nebulizer
•Remove the expiratory cassette.
2.1.1 Remove the expiratory cassette
Important: The expiratory cassette is a
precision instrument and must be handled
carefully.
•Tilt the user interface backwards.
•Press the button on the expiratory cassette.
•Tilt the cassette upwards and remove.
Important: After removing the expiratory
cassette, do not pour any fluid into the
expiratory cassette compartment. Avoid
contact with electrical connectors.
SERVO-air Ventilator System, User's Manual 7
| Patient unit and user interface | 2|

2.2 Wiping and discarding
Wipe all parts with cleaning wipes or a soft
lint-free cloth moistened in soap & water or
detergent-based disinfectant.
In case of more contaminated surfaces, use
ethyl alcohol (70%) or isopropyl alcohol (70%).
Avoid contact with electrical connectors.
Important: Do not use abrasive or sharp
tools to clean the user interface.
2.3 Assembling
2.3.1 Insert the expiratory cassette
•Hinge a clean expiratory cassette and press
it firmly down into lock position.
Important: 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
routines.
8SERVO-air Ventilator System, User's Manual
| 2| Patient unit and user interface |

2.3.2 Pre-use check
After cleaning, always perform a pre-use
check.
Refer to the ventilator system 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.
2.4 Preventive maintenance
2.4.1 Check fan filters
Regularly check that the fan filter on both sides
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.
2.4.2 Check air inlet filter
The air inlet filter must be exchanged once a
year during preventive maintenance or more
often when necessary.
2.4.3 Replace the dust filter
Check the dust filter and replace it once a
month or more often when necessary.
Note: The dust filter must be replaced. If it
is washed it will lose its characteristics.
•Open the air inlet filter lid by pressing the
two latches towards each other.
•Replace dust filter.
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| Patient unit and user interface | 2|

•Close the lid.
10 SERVO-air Ventilator System, User's Manual
| 2| Patient unit and user interface |

3 Expiratory cassette
3.1 Preparations
•Remove the expiratory cassette
Refer to section Remove the expiratory
cassette on page 7.
3.2 Disinfection
There are two disinfection procedures for the
expiratory cassette and associated parts when
no bacterial filter is used:
•Washer-Disinfector (ISO 15883-1)
(recommended)
•Disinfectant
3.2.1 Washer-disinfector
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: Immediate rinsing in water
(<35°C/95°F) can remove particles and
reduces the risk of cross-contamination
between patients.
•Wash the parts with water only in a
washer-disinfector at a temperature of
85-95°C (185-203°F).
Refer to section Recommended intervals and
disinfectants on page 24.
•Place the expiratory cassette on its side
with the electrical connector uppermost.
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.
SERVO-air Ventilator System, User's Manual 11
| Expiratory cassette | 3|

3.2.2 Disinfectant
•Let the parts soak in disinfectant.
Refer to section Recommended intervals
and disinfectants on page 24.
Important: Follow the disinfectant
manufacturer’s recommendations and
instructions, otherwise the cassette may be
damaged or not disinfected properly.
Rinse after disinfection
Important:
Follow the disinfectant manufacturer's
recommendation and instructions regarding
rinsing.
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.
•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 at least 5-7 times.
12 SERVO-air Ventilator System, User's Manual
| 3| Expiratory cassette |

3.3 Drying alternatives
Important: The expiratory cassette must
be dried before use (if not dry, the
expiratory cassette may not pass the
pre-use check).
Always shake/tilt the cassette carefully (5-7
times).
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.
3.3.1 Recommended position in a drying
cabinet
3.3.2 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.
Notes:
•Never dry the cassette by applying
high-pressure air as the internal tubing
may be damaged.
•Drying may not be necessary if the
washer-disinfector has a drying phase.
SERVO-air Ventilator System, User's Manual 13
| Expiratory cassette | 3|

3.4 Steam autoclaving
Note: Steam autoclaving procedures are
not recommended.
Steam autoclaving will reduce the lifetime of
the expiratory cassette and is not recommend
as a cleaning method.
Steam autoclaving is normally not necessary
for the expiratory cassette, as it is not an
invasive instrument, but when applied, use
validated processes only.
Refer to section Recommended intervals and
disinfectants on page 24.
3.4.1 Cleaning
•Clean before steam autoclaving.
Refer to section Washer-disinfector on
page 11.
3.4.2 Rinse
•Rinse the parts thoroughly in water
(<35°C/95°F).
•Let the water flow through the parts.
3.4.3 Drying before steam autoclaving
Before placing the expiratory cassette in a
steam autoclave, make sure that no water
remains inside the cassette.
Refer to section Drying alternatives on
page 13.
3.4.4 Steam autoclave
Refer to section Recommended intervals and
disinfectants on page 24.
3.4.5 Drying after steam autoclaving
Refer to section Drying alternatives on
page 13.
3.5 Assembling
Refer to section Assembling on page 8.
14 SERVO-air Ventilator System, User's Manual
| 3| Expiratory cassette |

4O
2cell (maintenance)
4.1 Preventive maintenance
Regularly check the cell status in quick menu
SYSTEM STATUS/O2cell. The O2cell should
be exchanged if <10% estimated remaining
capacity is indicated.
Refer to the ventilator system User's manuals
for O2cell adjustment.
4.2 Preparations
WARNING! The sealed unit of the O2 cell
contains a caustic liquid which may cause
severe burns to the skin and eyes. In case
of contact, immediately wash the affected
area continuously with water for at least 15
minutes and seek medical attention,
especially if the eyes are affected.
Important:
•Make sure the O2 cell is for the intended
ventilator model.
•Replacement of the O2cell and filter and
extended cleaning must only be
performed by trained personnel.
•Unpack the O2cell at least 15 minutes
before replacement.Turn the ventilator
system off using the on/off switch on the
patient unit.
•Disconnect the ventilator system from the
power and gas supply.
•Remove the expiratory cassette.
•Remove the front cover.
•Remove the O2cell.
WARNING! The inspiratory channel cover
shall be kept in place once maintenance
has been performed. Otherwise the gas
modules can be affected and deliver the
wrong flow.
4.2.1 Remove the O2cell
•Unfasten and turn out the locking latch.
•Disconnect the O2cell connector.
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| O2cell (maintenance) | 4|

•Remove the O2cell.
4.3 Assembling
4.3.1 Insert the O2cell
•Connect the O2cell connector.
•Put the O2cell in position.
•Fasten the locking latch.
•Put the lower part of the front cover in
position.
•Press the upper part of the front cover into
position.
•Perform a pre-use check.
16 SERVO-air Ventilator System, User's Manual
| 4| O2cell (maintenance) |

5 Inspiratory channel (maintenance)
5.1 Preventive maintenance
Important: It is recommended that a regular
cleaning and an extended cleaning of the
inspiratory channel should be performed
before carrying out preventive maintenance.
5.2 Preparations
•Remove the expiratory cassette.
•Remove the front cover.
•Remove the O2cell.
Refer to section Remove the O2cell on
page 15.
5.2.1 Remove inspiratory channel and tube
•Press the latch and gently pull out the
inspiratory channel.
•Disconnect the tube and remove the
bacterial filter. Discard the filter to
hazardous waste.
5.3 Disinfection
5.3.1 Rinse before disinfection
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: Immediate rinsing in water
(<35°C/95°F) can remove particles and
reduces the risk of cross-contamination
between patients.
SERVO-air Ventilator System, User's Manual 17
| Inspiratory channel (maintenance) | 5|

5.3.2 Washer-disinfector
•Place the inspiratory channel so that the
water flows through it.
Clean the inspiratory channel and tube
the same way as the expiratory cassette.
•
•Refer to section Disinfection on page 11.
5.4 Assembling
5.4.1 Insert inspiratory channel and tube
•Put a new bacterial filter in position and
connect the filter to the tube.
18 SERVO-air Ventilator System, User's Manual
| 5| Inspiratory channel (maintenance) |

•Push the inspiratory channel until it clicks
into locked position.
•Re-insert the O2cell.
Refer to section Insert the O2cell on
page 16.
•Mount the front cover.
Refer to section Assembling on page 16.
•Note on a log sheet that an extended
cleaning of the inspiratory channel has been
performed.
•Insert the expiratory cassette.
•Perform a pre-use check.
Refer to the ventilator system User's
Manual.
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| Inspiratory channel (maintenance) | 5|

6 Aerogen Pro nebulizer
6.1 Preparation
Important: Do not use abrasive or sharp
tools to clean the nebulizer unit.
Note: The Aerogen Solo nebulizer unit is
intended for single patient use only, do not
re-use, clean or sterilize.
Cleaning should be done after each patient or
according to hospital routines.
Disconnect the nebulizer unit from the control
cable, and remove the nebulizer unit, T piece
and adapters from the patient circuit or mask.
6.2 Wiping and discarding
•Wipe the control cable with a damp cloth.
Do not autoclave.
•Check for exposed wiring, damaged
connectors, or other defects and replace if
any are visible.
Note: In case of more contaminated
surfaces, use ethyl alcohol (70%).
6.3 Disinfection
6.3.1 Cleaning
•Ensure there is no medication remaining in
the nebulizer.
•Disassemble the nebulizer unit and adapters
into individual components.
•Remove the filler cap from nebulizer unit.
•Clean all parts with warm water and mild
liquid detergent.
•Rinse all parts in sterile water.
•Shake excess water from parts and allow
parts to air dry.
•Assemble the nebulizer.
Refer to the ventilator system User's
Manual.
6.3.2 Washer-disinfector
Two different washing cycles are validated for
the Aerogen Pro nebulizer:
•Liquid alkaline cleaner (diluted as per
manufacturer instruction) and mains water.
Load the components in the
washer-disinfector.
-
- Pre-rinse the components for 3 minutes.
- Clean the components with liquid alkaline
cleaner at 55 °C (131 °F) for 10 minutes.
- Rinse for 1 minute.
- Rinse using thermal disinfection cycle at
93 °C (199.4 °F) for 10 minutes.
•Mains water and without the use of a
detergent.
Load the components in the
washer-disinfector.
-
20 SERVO-air Ventilator System, User's Manual
| 6| Aerogen Pro nebulizer |