Atmos S 351 User manual

ATMOS MedizinTechnik
GmbH & Co. KG Ludwig-Kegel-Str. 16
79853 Lenzkirch / Germany
Tel. [phone] / 6 89-0
Fax [phone] / 6 89-190
[email protected]
www.atmosmed.de
444.0405.B
2017-07 Index: 25
ATMOS®
S 351
Operating Instructions
English

2
Page
1.0 Introduction
1.1 Notes on operating instructions ............................3
1.2 Function ................................................................4
1.3 Explanation of symbols .........................................5
2.0 Safety information ....................................... 6 - 7
3.0 Intended Use .......................................................8
4.0 Installation and comissioning
4.1 Indicators and controls.................................. 9 - 10
4.2 Initial start-up ...............................................11 - 15
5.0 Operation
5.1 Basic operation ........................................... 16 - 17
5.2 Intermittent function .................................... 18 - 22
5.2.1 Use of the intermittent function ...........................18
5.2.2 Starting the intermittent mode ..................... 18 - 20
5.2.3 Additional functions .............................................21
5.2.4 Use of the footswitch in intermittent mode ..........21
5.2.5 Warning signals ..................................................22
5.3 Settings ....................................................... 22 - 25
5.3.1 Final vacuum in Vac Limit menu .........................23
5.3.2 Time for vacuum build-up / vacuum release
in the Incr. Decr. Time menu ...............................23
5.3.3 Vacuum holding period in the Vac hold menu .....24
5.3.4 Pause time in the Pause menu ...........................24
5.3.5 Adjust unities.......................................................25
5.3.6 Brightness of display ...........................................25
5.4 Trolley operation .................................................25
5.5 Suction function .......................................... 26 - 28
5.5.1 Changing the secretion canister .........................27
5.5.2 Suction with footswitch........................................28
5.6 Faults .......................................................... 28 - 29
5.6.1 Emergency operation ..........................................28
5.6.2 Overheating ........................................................29
5.6.3 Fault ....................................................................29
6.0 Cleaning and Maintenance
6.1 Reprocessing of hoses and
secretion canister ................................................30
6.2 Cleaning and disinfecting the outside of
the unit ................................................................31
6.3 Recommended instrument disinfectants .............32
6.4 Recommended surface disinfectants ..................32
6.5 Recommended cleaning agents .........................32
7.0 Maintenance......................................................33
8.0 Trouble-shooting....................................... 34 - 36
9.0 Spare parts and accessories
9.1 Spare parts ................................................. 37 - 38
9.2 Accessories ................................................. 39 - 41
9.2.1 Canisters and hoses ...........................................39
9.2.2 Accessories to simplify handling .........................40
9.2.3 Accessories for General Surgery,
Anaesthesia, Intensive ........................................40
9.2.4 Cannulae, cardiovascular/thoracic surgery .........41
9.2.5 Cannulae, ENT ...................................................41
9.2.6 Aesthetic-Plastic surgery ....................................41
10.0 Technical specifi cations............................. 42-43
11.0 Disposal.............................................................44
12.0 Notes on EMC.............................................. 45-47
General Standard Terms and Conditions
Contents

3
1.1 Notes on operating
instructions
 These instructions contain important information on how to
operate the ATMOS® S 351 safely, properly and effi ciently.
It should, therefore, not only be used for new operators who
have to be instructed, but also as an ongoing source of
reference. These instructions will assist in avoiding danger
and in reducing repair costs and downtime. In addition, they
will increase reliability and the life of the equipment. For
these reasons, the operating instructions must always
be available near the equipment.
Please read Chapter 2.0 „Safety Information“ before initial
start-up so that you are prepared for any potentially danger-
ous situations.
The following applies in all cases:
Careful and prudent work is the best protection against
accidents!
The operational safety and availability of the equipment
depend not only on your ability, but also on care and
maintenance of the ATMOS® S 351. For this reason,
regular cleaning and maintenance work is essential. Major
maintenance and repair work must be carried out only by
experts authorised by ATMOS. Please insist that only origi-
nal spare parts are used for repairs. This will guarantee that
operational safety, usability and value of your equipment
are preserved.
 The ATMOS® S 351 carries the CE marking CE-0124 in
accordance with the EU Council Directive 93/42/EEC on
medical products and meets the basic requirements listed
in Appendix I of this directive.
 The product ATMOS® S 351 complies with all applicable
requirements of the directive 2011/65/EC restricting the use
of certain hazardous substances in electrical and electronic
equipment (“RoHS”).
 The declaration of conformity can be obtained on our
website at www.atmosmed.com.
 The quality management system applied by ATMOS has
been certifi ed in accordance with the international stand-
ards EN ISO 9001 and EN ISO 13485.
 Authorised service providers are issued by ATMOS with
service instructions including detailed circuit descriptions,
parameter settings and service information.
 Reproduction – even of excerpts – is permissible only with
the written permission of ATMOS.
Abbreviations / symbols in these instructions
 Marks a list
• Sub-division of a list/activity.
The recommended sequence must be observed!

ATMOS
Telefon: + (49) 7653 689-0
Fax:
+ (49) 7653 689-190
+ (49) 7653 689-393 (Service Center)
e-mail: [email protected]
Internet: www.atmosmed.de
MedizinTechnik GmbH & Co. KG
Ludwig-Kegel-Str. 16
79853 Lenzkirch
Deutschland / Germany
Marks particularly important information!
1.0 Introduction

4
1.2 Function
The ATMOS® S 351 is a mains-operated suction unit. The
quiet, maintenance free diaphragm pump forms the core of the
ATMOS® S 351. It creates a vacuum in the secretion canister
which assists in drawing off and collecting the secretions.
The fi nal vacuum required and thus the suction power can be
preselected in steps with the press of a button. The ATMOS®
S 351 produces this vacuum with the aid of a microprocessor-
based controller. The pump switches off when the set value
is reached. A control circuit ensures that the pump only runs
when the vacuum is less than the value set.
The electronic fi lling level control, a safety canister and a
bacterial fi lter prevent secretions being sucked into the unit.
Various monitoring and control functions increase the ease of
operation of the ATMOS® S 351 and ensure safe use. These
are, for example:
– Electronic level control of the secretion canister which
provides visual and acoustic signals when the maximum
level is exceeded.
– A standby function switching the unit off when not in use
(e.g. open suction cannulae) and automatically on again
when the cannulae is inserted into the material to be aspi-
rated.
– Electronic fi lter monitoring signalling a blocked (clogged)
fi lter audibly and visually.
– A monitor function which checks all main equipment func-
tions at regular intervals and activates a service request
indicator if a fault is detected.
All components which come into contact with the secretion,
such as hoses, secretion canister, suction hose or lid system
can be autoclaved (134 °C, 3 bar, 5 min 3x fractionated pre-
vacuum).
A special equipment trolley can be supplied for mobile use.
Before removing a full secretion canister,
switch off the pump and remove the connecting hoses
from the canister.

1.0 Introduction

5
1.3 Explanation of symbols
"limit"
"max."
Caution, observe operating instructions !
Equipment safety fuse
Unit off
Unit on
Fine suction
Maximum vacuum
Standby function ON/OFF
Alternating current
Protective ground terminal
Trolley
Foot regulator
Filter blocked
Full secretion canister
Bacterial fi lter
Equipotential bonding
Application part Type B
1.0 Introduction

6
 Please dispose properly all packaging.
 The doctor treating the patient is responsible for the proper
surgical procedures and technology. A trained doctor has to
decide in each case whether the treatment is appropriate
and how to carry it out.
 The ATMOS® S 351/S 351 Natal/S 351 Ophthal may be
used only by trained staff under supervision (IEC 601-1 /
EN 60601-1).
 The ATMOS® S 351/S 351 Natal/S 351 Ophthal meets the
requirements of the standard IEC 601-1-2 / EN 60601-1-2
„Electromagnetic compatibility – medical electrical equip-
ment“ with regard to resistance to interference.
 Always set up the equipment in such a way that the operator
can easily see the front panel and can reach it comfortably.
The equipment must be placed on a fi rm, level surface.
 The ATMOS® S 351/S 351 Natal/S 351 Ophthal has been
designed in accordance with IEC 601/ EN 60601. The
equipment conforms to VDE Safety Class I. It must only
be connected to a properly installed earthed socket.
 Before connecting the equipment, check that the values
for voltage and frequency indicated on the equipment
correspond to those of the mains supply.
 Use only correctly installed mains sockets and extension
cables.
 Check equipment, secretion canister, power cable, acces-
sories, connection cables and hoses for damage before
start-up. Damaged cables and hoses must be replaced
immediately. Check before use that the unit functions
properly.
 To disconnect the equipment from the mains, always pull
the plug out of the wall socket fi rst. Only then disconnect
the cable from the unit. Never touch plug or cable with wet
hands.
 After transport at low temperatures, the equipment must
be left at room temperature for up to six hours before initial
start-up. If the equipment has not been acclimatised, it must
not be operated as the diaphragms of the pump could be
damaged.
 When switching on the unit, a high vacuum value might be
present.
 The suction hose must never come into direct contact
with the patient. A suction catheter, suction attachment or
medical suction instruments must always be used.
 Too high vacuum values may lead to tissue damages.
 Only use transparent hoses.
 The environmental conditions listed in the specifi cations
(chapter 10.0) must be observed.
 Please note:
A medical insulating transformer with earth leakage
monitor or any similar safety system acc. to EN 60 601-1 is
required, if several devices are connected over one com-
mon power supply. The transformer must correspond to the
power consumption of all the devices to be connected.
 The ATMOS® S 351 must only be operated in rooms
designated for medical use. It is not designed for use in
potentially explosive areas (M and G)and in oxygen rich
enviroNments. Potentially explosive areas can arise from
use of fl ammable anaesthetic agents and agents used for
cleaning and disinfecting skin.
 The footswitch is suitable for use in the above applications.
 If demineralised/slightly mineralised water or tap water is
sucked off, the overfl ow monitor of the ATMOS® S 351 does
not function reliably as it works on an electrical basis.
 Do not allow liquid to enter the equipment. If liquid has
entered the equipment, it must be inspected by a service
engineer before further operation.
 When using on a patient (e.g. during surgery or lipectomy),
an additional equivalent unit should be ready in case of
failure of the unit (backup suction unit).
 The level of vacuum preselected and the selection of addi-
tional products must be as instructed by the specialist for
all applications on a patient, e.g. for vacuum extraction,
drainage of wounds or ophthalmologic surgery.
 These operating instructions correspond to the design of
the equipment and the latest version of the safety standards
at the time of printing. All property rights are reserved for
the circuits, processes, names, software programs and
equipment listed.
 Particularly important notes are placed in a frame in these
instructions.
 The software detects a full secretion canister or „shorting
between the contact terminals“ and issues a warning at
regular intervals. This does not interrupt the process of
vacuum extraction.
 Prior to the wound drainage treatment, check the suction
unit for correct function.
 Wound drainage may only be effected under medical su-
pervision.
 When using the equipment to drain a wound, the user (doc-
tor, nursing staff) must continuously monitor the patient’s
fl uid and electrolyte balance. It is recommended to specify
the secretion canister volume on the basis of the medical
assessment to prevent excessive removal of fl uids in case
of insuffi cient monitoring. This can be implemented by
selecting an appropriate secretion canister or limiting the
maximum secretion canister level.
 The maximum level can be restricted by, for example, top-
ping up the secretion canister with sterile water. For this,
the secretion canister is fi lled with the difference in volume
between secretion canister volume and required drainage
volume before start of treatment.
Once the quantity is reached, the unit automatically switches
off via the level monitor. Check before use on the patient
that the level monitor functions properly.
2.0 Safety Information

7
 Replace or empty the secretion canister when a fi lling level
of 2/3 (incl. foam) is reached.
 Only use appropriate, adaptable wound treatment material
and pay attention to manufacturer’s instructions.
 Continuously check tightness of the wound treatment
material.
 Prior to and during the wound drainage treatment, make
sure that the connection hoses are not kinked or clog-
ged.
 During the wound drainage treatment, continuously check
the vacuum value.
 The vacuum must be built up slowly in a controlled manner
for vacuum extraction.
 The user must continuously check the vacuum during
vacuum extraction.
 If the vacuum cannot be reduced despite correct adjust-
ment of the equipment (defective auxiliary air valve), we
recommend closing the suction hose between pump con-
nection and bacterial fi lter in an air-tight manner (pinch) and
then removing the suction hose from the pump connection
or cutting through the suction hose on the pump connection
with a scalpel. Then carefully let air back into the suction
hose (carefully release the pinched suction hose) so that
the vacuum is removed as slowly as possible.
 The ATMOS® S 351 version for vacuum extraction on
trolley 320.0070.0 must not be used as fl uid suction unit
for operations as the electronic secretion canister overfl ow
monitor on this trolley does not work.
 The buffer container for vacuum extraction must have a
volume of at least 1 litre.
 During vacuum extraction, the automatic mode can be
disabled by operation of the foot switch.
 Prior to and during the vacuum extraction resp. keratome
treatment, make sure that the connecting hoses are not
kinked and that the fi lter is not clogged. Therefore, check,
prior to each application, whether the fi lter is clogged.
 Vacuum extraction resp. keratome treatment may not be
possible at elevated altitudes as it may not be possible to
achieve the vacuum required. It is at the discretion of the
specialist whether an operation using the suction unit can
be carried out at the fi nal vacuum obtained.
 The canister overfl ow safety is not active during vacuum
extraction resp. with keratome treatment.
 In case of a failure of the mains power supply or accidental
switching off of the equipment during extraction, this must
be aborted and production of the vacuum has to be re-star-
ted after the equipment has been successfully re-started.
The best way to do this is by pinching the suction hose
to maintain the vacuum in the cup, venting by pressing
the END button and building the vacuum again (pressing
the suction cup button) and then applying the vacuum by
References
Medical product law (MPG) of 07.08.2002
EN 60601-1/1996: Medical electrical equipment. General safe-
ty information, main section 6. Protection against the danger
of ignition of fl ammable mixtures.
DIN VDE 0751 Part 1/10.90: Repair, modifi cations and testing
of medical electrical equipment, Part 1: General speci-fi ca-
tions.
Obtainable from: VDE-Verlag GmbH, Bismarckstraße 33,
12157 Berlin, Germany.
 Only approved extraction cups with CE marking in accor-
dance with RL 93/42 must be used.
 The system must not be ventilated suddenly with simul-
taneous pulling on the extraction cup.
 If the fi nal vacuum set is not achieved, the ATMOS® S
351 Natal will not issue an audible signal „fi nal vacuum
achieved“.
 The user must continuously check the vacuum prior to and
during a keratome treatment.
 The ATMOS® S 351 Ophthal is previously used with a
suction ring (keratome) but may also be used for other
application ranges.
 The suction ring may only be removed from the eye after
complete removal of the vacuum (beep).
 In case of a power failure or an inadvertent switching off
of the unit during keratome treatment, this therapy has to
be stopped and vacuum must eventually be generated
again after a restart of the unit. Best method to do so is by
kinking the suction hose in order to hold the vacuum on
the suction ring. Ventilation is done by pressing the END
button. Vacuum is then generated again by pressing the
EYE button. Following, the vacuum is present when having
released the kinked hose.
This product is not re-sterilisable. Repeated reuse of
components which are marked with a is forbidden.
In case of repeated reuse these components lose their
function and there is a high infection risk.
ATMOS do not accept liability for injury to persons
or damage to equipment if
– non-original ATMOS parts have been used.
– the information in these operating instructions
has not be observed.
– installation, adjustment, changes, extensions
and repairs have been carried out by persons
not authorised by ATMOS.

releasing the pinched hose. No venting must take place
while the equipment is switched on again. The control unit
continues to build up the vacuum or holds the vacuum.
2.0 Safety Information
2

8
Name: ATMOS® S 351
Main functions:
Suction of secretions, rinsing fl uids and temporarily collection
of body fl uids.
Med. indications/ application:
For surgeries e.g. suction of wound cavities, abscesses etc.
For endoscopy e.g. suction of secretions and rinsing fl uids.
For cardiological interventions.
For the intermittent suction.
Specifi cation of the main function:
Drainage and temporarily collection of body fl uids. By means of
a microprocessor controlled, electrical suction pump, a negati-
ve pressure will be created. The integrated secretion canister
allows a temporarily collection of the derived body fl uids. The
microprocessor enables an intermittent suction as well as a
controlled switch off of the pump.
Application organ:
Natural orifi ces as well as openings which are created by means
of a surgery (whole body)
Application time: Short-term use on the patient (< 30 days)
Application site:
The application site is the clinical, outpatient as well as the
practices area.
The application of the device may only be performed by medical
trained and introduced staff.
Contraindications:
No application in low-vacuum range e.g. thoracic and wound
drainage.
No application outside of the medical sector.
No suction of fl ammable, corrosive and explosive substances.
The product is: X active □ not active
Sterility: Not necessary
Single use product / reprocessing:
The device and the accessories are partially reusable. For
information on reprocessing, cleaning and disinfection see
user manual.
Note: For a professional smoke evacuation we
recommend you the AtmoSafe, REF 445.0000.0
3.0 Intended Use

9
4.1 Indicators and controls
Fig. 1. ATMOS® S 351
 Bracket and contact element for secretion canister
 Pump connection
 Safety secretion canister with optional fi lter
 Bracket for secretion canister
 Connection for hose to safety canister
 Connection for suction hose
 Release button for locking system (lid of secretion canister)
 ON / OFF switch
 Indicators and control panel
 Safety canister outlet (to pump connection)
Safety canister inlet (from secretion canister)
10-6 mm taper adapter
4.0 Installation and commissioning
 
 

 12
11

10
Fig. 2. ATMOS® S 351 (rear)
Mains connection
Equipment safety fuses
Connection for potential equalization
Connection for footswitch
Safety clamp for mains cable
Vent
13 14
15
16
17
18
13
14
15
16
17
18
The suction device ATMOS® S 351 is used for sucking off liquids
and small particles. During the use of laser, HF respectively radio-
frequency (RF) surgical devices, smoke gas is produced which
is not kept in the secretion container, but streams towards the
pump and then very quickly blocks the integrated bacterial fi lter
which serves as microbiological as well as overfl ow protection. In
order to prolong service life of the bacterial fi lter, a carbon fi lter,
REF 008.0758.0 can be installed in front of the bacterial fi lter. The
carbon fi lter extracts the aerosol from the smoke gas and protects
the bacterial fi lter.
Attention! The carbon fi lter is not a replacement for the bacterial fi l-
ter! But it prevents from early reduction of suction capacity caused
by a quick fi lter blocking.
Fig. 2.1
Flow
Former hose piece con-
nected to the bacterial fi lter
Hose connector 8-12
REF 000.0239.0
Hose piece, diam. 10 mm
REF 006.0026.0
Support for standard rail
system for the carbon fi lter
REF 444.0660.0
Bacterial fi lter in the
fi lter housing
Carbon fi lter
008.0758.0
4.0 Installation and commissioning

11
Fig. 4. Fitting the lid
Fig. 3. Closure system
 Locking handle
 Knurled screw to lock the cap insert and to adjust the
contact force
 Release button
 Level sensor with anti-foaming device
 Cap rim
 Opening for double socket nipple
 Contacts for fi lling level sensor
This section will explain
– how to handle the closure system of the collection
canister lid,
– how to lock and insert the secretion canister,
– which hoses have to be connected,
– how to connect the ATMOS® S 351 to mains electricity.
Please note the safety information in Section 2.0
before initial start-up.

The closure system must tightly seal the secretion canister so
that the vacuum required can build up within. Fig. 3 shows the
closure system with the locking handle open.

 Push the closure system over the secretion canister in
accordance with Fig. 3 (take care that the cap rim (, Fig.
3) is below the bead of the secretion canister) and press
the locking handle downwards until it engages.
 Tension of the lid system can be changed by turning the
knurled screw (, Fig. 3).
4.2 Initial start-up

The anti-foaming device must be placed on the fi lling
level sensor for strongly foaming secretions.




4.0 Installation and commissioning

12
Fig. 5. Attaching the 1.5 litre secretion canister
Fig. 6. Attaching the 3 litre or 5 litre secretion canister to the
equipment trolley.
 Attach the 1.5 litre secretion canister either to the lefthand
or righthand bracket in accordance with Fig. 5.
 If you are using a 3 litre or 5 litre secretion canister, attach
it to the trolley in accordance with Fig. 6.
When using the trolley, the ATMOS® S 351 must
be fi rmly connected to the trolley table using the
two fi xing screws (underside of trolley table)
(contacts for level sensor). The following symbol
will be shown on the display .

 Please do not use the secretion canister
brackets on the ATMOS® S 351 and the trolley
for any other purposes. This will prevent
malfunctions.
4.0 Installation and commissioning

13
 Finally insert the double connecting nipple into the secretion
canister cap (Fig. 7). Ensure that it engages by twisting it
slightly.
Hose connections
 Only use transparent hoses to be able to assess condition
of the hoses. Replace the hoses when they are conta-
minated.
 Connect pump connection (, Fig. 8) and bacterial fi lter
 with a short hose. Connect a second short hose to the
printed side of the bacterial fi lter and connect it to the sa-
fety canister cap. Connect the longer hose to the vertical
connection of the double connecting nipple  and the
connection  of the safety canister.
 When using the optional bacterial fi lter with the safety ca-
nister, bacterial fi lter  is not required. In this case connect
the short hose to pump connection  and directly to the
safety canister lid .
The ATMOS® S 351 must never be used without a
bacterial fi lter.


Fig. 7. Inserting the double connecting nipple
It is advisable to treat the secretion canister
opening with vaseline or silicone so that the
sealing rings seal better and are maintained.

Fig. 8. Hose connections for suction mode
 Pump connection
 Bacterial fi lter
 Safety canister lid
 Connection on safety canister
 Double connecting nipple
4.0 Installation and commissioning

14
 Now fi t the suction hose to the angled connection of the
double connecting nipple.
Fig. 9. Connecting the suction hose
 The 10 mm dia. suction hose is fi tted directly to connec-
tion (, Fig. 10) the 6 mm dia. hose is fi tted via the hose
reducer .
Fig. 10. Double connecting nipple
 Connection for hose to safety canister
 Connection for suction hose
 Hose reducer for 6 mm hose

4.0 Installation and commissioning

15
 Check whether the voltage and frequency data listed on
the equipment correspond to the power supply and connect
the ATMOS® S 351 via the connector (, Fig. 11) to mains
power. Secure the mains cable against accidental removal
using safety clamp  .
If the ATMOS® S 351 is used for surgical
procedures, we recommend connecting it to the
equipotential bonding connection of the room via
connection .

 If you have a footswitch, connect it to its connection
(, Fig. 11).
The ATMOS® S 351 is now ready for operation.
Fig. 11.
Fig. 12. Indicators and control panel
Button for selecting the maximum vacuum
Button for increasing the vacuum
Button for reducing the vacuum
 Display (graphics)
 Button for switching intermittent operating on and off
 Indicator for intermittent Mode On
 Button for switching auto standby on and off
 Indicator for auto standby on
 


4.0 Installation and commissioning

16
5.0 Operation


Please ensure that the following parts have been
reprocessed before treating a new patient.
– suction hose including suction attachment or suction
instrument,
– secretion canister lid and double socket nipple,
– connection hose to safety canister as well as safety
canister and bacterial fi lter.
Check before each use whether the bacterial fi lter has
to be replaced. You must use only a clean and dry fi lter.
The electronic fi lter monitor signals when the fi lter is
blocked (clogged).
The suction hose must never come into direct contact
with the patient. A suction catheter, a suction connector
or medical suction instruments must always be used.
5.1 Basic Operation
Switching on
The ATMOS® S 351 always starts the suction process when
switched on. The settings are those which were in operation
before the last switching off. If the vacuum value had been set
to 0 before switching off, it will be set to 0.1 bar on switching on.
Graphics display
All operating states are shown on the graphics display (Fig.
13).

Fig. 13. Graphics display
Intermittent operation
Countdown timer
Vacuum set
 Bar graph display
 Set value
 Current value
All connections between secretion canister and pump
must be absolute dry before being used !

  




17
Automatic standby
If automatic standby has been enabled, the ATMOS® S 351 au-
tomatically switches off after approx. 20 sec of non-use (open
suction connection). The unit switches on again as soon as you
hold the suction connector into the material to be aspirated,
and the full suction power is available. This avoids unnecessary
noise. For certain applications, e.g. vacuum removal with very
narrow suction tubes or with suction hoses with several suction
openings at the front or when using disposable suction bags
with fi lter stone, use of the standby function is restricted (it may
be necessary to switch it off). The Standby function is switched
on and off using the button (LED illuminated when On).
When using suction hoses with pool suction tips, the standby
function must not be used.
Fig. 14. Auto standby display
Electronic fi lling level monitoring
The ATMOS® S 351 has an electronic fi lling level monitoring
which switches off the unit when the maximum fi lling level
is reached. At the same time, an audible alarm sounds and
the Secretion canister full display is shown (Fig. 15). The
maximum fi lling level is reached when the liquid comes into
contact with the sensor (, Fig. 3, page 11) in the closure
system. If a large amount of foam is generated, you should fi t
the enclosed anti-foaming device over the sensor so that the
unit does not switch off prematurely. As soon as the sensor
is no longer in contact with the liquid (e.g. on replacing the
double socket nipple), the unit switches on again.
Electronic fi lter monitoring
The ATMOS® S 351 has an electronic fi lter monitoring which
monitors whether the fi lter is blocked. The pump does not
switch off when the Filter blocked state is detected so that
work can continue. Change the fi lter as soon as possible or
clean the fi lter in accordance with the instructions in Chapter
6.0 when this message is displayed.
Fig. 15. Secretion canister full display
Fig. 16. Filter blocked display The message is also displayed when the hose is
pinched near the unit. This message is also dis-
played while the drainage accessories are
connected. Remove the parts

Fig. 13. Graphics display
Intermittent operation
Countdown timer
Vacuum set
 Bar graph display
 Set value
 Current value
5.0 Operation

18
5.2 Intermittent function
 This function is used for gastric and wound drainage.
5.2.1 Use of the intermittent function
 The intermittent function has four phases which are repea-
ted at regular intervals. The duration of each phase and
the level of vacuum to be built up can be set in the Service
1 menu (see section 5.3, page 22, on settings).
The intermittent function for gastric and wound drainage is
factory-set and can be modifi ed on the basis of the medical
diagnosis.
 Phase 1: Soft start to a fi nal vacuum value
(default build up time = 10 sec)
 Phase 2: Final vacuum value held
(default holding time = 60 sec)
 Phase 3: Controlled venting
(default release time = 10 sec)
 Phase 4: Pause
(default pause time = 60 sec)
When setting up fi ne suction (for protecting delicate tissue),
all times are to be set to 0 sec.
5.2.2 Starting the intermittent mode
 Switch on the ATMOS® S 351. Check that the control lamp
in the switch is illuminated.
The switch-on menu (Fig. 17) is shown on the display for
about 2 sec.
Then the unit automatically goes into suction mode.
Fig. 17. Display immediately after switching on
The four phases of the intermittent mode
Vacuum
5.0 Operation
Time

19
Fig. 18. The intermittent mode is obtained by pressing
the intermittent button.
Fig. 19. Soft start
Fig. 20. Display of Phase 2: The fi nal vacuum is reached.
The time remaining until the end of phase 2 is
shown at the top left (in the example it is 28 sec).
 Press the intermittent button (Fig. 18).
The unit automatically changes into intermittent mode and
starts with phase 1: soft start (Fig. 19). The current phase
(phase 1 = 1, phase 2 = 2, …) and the time remaining (in
seconds) to the end of the current phase are displayed at
the top left.
In phase 2, the vacuum obtained is held (Fig. 20).
5.0 Operation

20
In phase 3, the vacuum is released in a controlled manner
(Fig. 21).
Fig. 22. Display of Phase 4: The vacuum has been com-
pletely released. The ATMOS® S 351 pauses. The
time remaining until the end of phase 4 is shown at
the top left (in the example it is 49 sec).
Fig. 21. Display of Phase 3: The vacuum is completely re-
leased during this phase. The time remaining until
the end of phase 3 is shown at the top left (in the
example it is 7 sec).
In phase 4, the ATMOS® S 351 pauses at a vacuum of 0 kPa
(Fig. 22).
Leaving intermittent mode
 While in intermittent mode, press the intermittent button
(Fig. 18, page 19).
The unit leaves the intermittentmode and goes into holding
mode (Fig. 23).
In this mode, the intermittent mode can be re-started by
pressing the intermittent button or the suction mode can
be called up by pressing the arrow buttons (Fig. 24).
Fig. 23. Suction unit in holding mode
5.0 Operation