Webeco A 35-S User manual

Operating Instruction

Steam Sterilizer

A 35 - S

O:\EUK\TEDOK\GA AKTUELL\A35\ENGLISCH\A35SE1-2.DOC 04/98

Table of Contents

Page

1. Preliminary Notes............................................................1

1.1 General Remarks........................................................1

1.2 Safety Indications.......................................................3

2. Apparatus Description.....................................................5

3. Area of Application...........................................................5

4. Specifications..................................................................6

4.1 Installation and Connection Data.................................6

4.2 Ambient Conditions .....................................................6

4.3 Technical Parameters.................................................7

4.4 Standards and CE-Conformity .....................................8

5. Apparatus Overview......................................................10

6. System Functions..........................................................18

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG I

Vers. 02 / 04.98

Page

7. Installation and Operation..............................................22

7.1 Installation................................................................22

7.1.1 Water Supply ......................................................23

7.1.2 Electric Supplies..................................................24

7.2 Operation..................................................................25

7.2.1 Operating Prerequisites.......................................25

7.2.2 Operating Procedure...........................................25

7.2.2.1 Loading the Sterilizer.....................................25

7.2.2.2 Cleaning of the Sterilization Material prior to

Sterilization................................................................27

7.2.2.3 Wrapping and Loading of Sterilization Load...28

7.2.2.4 Post-Treatment of Sterilization Material.........31

7.3 Programs ..................................................................32

7.3.1 Program Selection/Start......................................32

7.3.2 General Program for Instruments 134°C..............33

7.3.3 General Program for thermolabile Instruments 121°C....35

7.4 Notification- and Failure Reports ...............................36

7.4.1 Indications ...........................................................36

7.5 Automatic Safety Lock..............................................39

7.5.1 Door Spindle Interlock.........................................39

7.5.2 Unlocking of Door Spindle ....................................39

7.5.3 Opening the Door during Power Failure...............40

7.6 Shutdown of Apparatus .............................................40

7.6.1 Temporary Standstill ............................................40

7.6.2 Shutdown of apparatus for standstill or transport.40

7.7 Activating/Deactivating Additional Cooling .................41

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

II

Vers. 02 / 04.98

Page

8. Effectiveness Test.........................................................42

8.1 General.....................................................................42

8.2 Biological Test..........................................................43

9. Maintenance Work........................................................45

9.1 General.....................................................................45

9.2 Maintenance.............................................................46

9.3 Cleaning....................................................................47

9.4 Repairs.....................................................................47

10. Spare Parts, Accessories ............................................49

11. Operation Quick Guide ................................................51

12. Index...........................................................................54

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG III

Vers. 02 / 04.98

1. Preliminary Notes

1.1 General Remarks

• This instruction manual provides the basis for the training
of the operator and provides information, which is
essential for the operation and functioning of this
apparatus.

• It is appliance orientated and contains the apparatus
description, handles the assembly, starting procedure,
cleaning instructions, maintenance, and maintenance
roster, including effectiveness test and repairs, as well as
storage and transport requirements.

• This instruction manual contains important indications,
which demand particular attention. These are marked
"CAUTION ", "ATTENTION" or "INDICATION".

CAUTION!
is used when work- or operating procedures have to be
adhered by strictly, in order to avoid endangerment of
personnel. This includes indications of special risks
while handling the appliance.

ATTENTION !
refers to work- or operating procedures, which have to
be followed precisely, in order to avoid damage to, or
destruction of the apparatus. This also applies to
routine work, which is performed after particular
stresses or under unusual atmospheric influences or
operating circumstances.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 1

Vers. 02 / 04.98

INDICATION , IMPORTANT:
addresses process related technical requirements,
which demand particular attention from the appliance
user.

The references to illustration and position numbers in the

text are placed in brackets, i.e. (3/5) refers to illustration
number 3, position number 5.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

2

Vers. 02 / 04.98

1.2 Safety Indications

This instruction manual provides information about a medical
device which may cause danger by electrical voltage or
current, mechanical, thermal or, if applicable, chemical
processes, respectively. Physical injury or material and
property damage may occur.

Therefore, following safety instructions are strongly
recommended to be followed.

• The device shall be used only for its intended use as
described by its designation and within this manual.

• The user shall follow strongly the advices and
recommendations of this manual. Inappropriate use of the
device may cause damage of the equipment or be harmful
to the user.

• Please read carefully these operation instructions before
starting installation or preparing operation.

• Preparatory procedures prior to operation shall be
performed only by the user/operator according to this
manual or by personnel specifically trained for this
purpose.

• Be advised never to put the device into operation when it
is damaged or seems to be damaged.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 3

Vers. 02 / 04.98

• Service and repair actions shall be done only by qualified
trained persons considering

- these Operating Instructions

- all other applicable supplemental user instructions

- applicable national laws and safety regulations

• Preservation of the maintenance schedule shall be
ensured by the user. Maintenance and service actions
shall be performed only by the manufacturer or by its
authorized representatives. If maintenance actions will be
performed by personnel of the user, he is responsible for
the safety and maintenance indications to be followed.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

4

Vers. 02 / 04.98

2. Apparatus Description

Item Description Part-No.:
A35-S 029949

Manufacturer:
Webeco Hygiene in Medizin
und Labor GmbH & Co. KG,
Mühlenstraße 38, 23611 Bad Schwartau

3. Area of Application

This Small-Steam-Sterilizer provides sterilization of wrapped
or unwrapped surgical and dental instruments at 134°C as
well as sterilization of thermolabile sensitive to heat
materials at 121°C. It is designed for use at on-site
locations.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 5

Vers. 02 / 04.98

4. Specifications

4.1 Installation and Connection Data

Dimensions (heightxwidthxdepth) : 440x500x700mm
Installation Base (widthxdepth) : 500x550mm
Chamber Dimensions (diam.xdepth): 250x380mm
Weight : ca. 45kg
Electrical Requirements : 230V/50Hz/10A
IEC 536 Protection Class : I
Supply Connector for Cooling Water: G ¾

4.2 Ambient Conditions

Operation Storage and

Transportation
Temperature : 15-35°C 5-50°C
Pressure : 850-1100mbar 650-1150mbar
rel. Humidity : 0-85% rel. humidity 0-65% rel. humidity

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

6

Vers. 02 / 04.98

4.3 Technical Parameters

Production-No. :
Year of Delivery :
Sterilizer Pressure Chamber
Permissible

operation overpressure : 3 bar
Test pressure : 3,9 bar
Working Pressure : 1,1 / 2,2 bar
Permissible

operating Temperature : 138 °C
Working Temperature : 121 / 134 °C
Capacity of

Sterilization Chamber : 19,5 Liter
Heating System : electrical
Heating Capacity : 2,0 kW
Acoustic Power Level : <85 dB(A)

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 7

Vers. 02 / 04.98

4.4 Standards and CE-Conformity

0197

According to the EEC Medical Device Directive (MDD)
93/42/EEC the small steam sterilizer WEBECO A 35 - S is a
medical device and with reference to Annex IX of the MDD to
be classified as class IIa medical device.

WEBECO GmbH & Co. KG has established a quality
management system according to DIN EN ISO 9001 and DIN
EN 46001 which has been approved by a "Notified Body"
applying Annex II, article 3 of the MDD (reg. no. SY 9711455

01).
On this base the small steam sterilizer WEBECO A 35 - S has

been applied to a regular procedure for evaluation of
conformity and has been proved to be compliant with the
essential requirements of Annex I of the MDD. This allows the
sterilizer to be marked by the sign

A respective formal Declaration of Conformity has been duly
signed.

Conformity of the sterilizer type A 35 - S in accordance with
this instruction manual with the a.m. MDD 93/42/EEC also
includes compliance with the essential requirements of the
EEC-regulations as listed below:

• 73/23/EEC (Low Voltage Directive)
in conjunction with 93/68/EEC

• 89/336/EEC (EMC-Directive)
in conjunction with 92/31/EEC and

93/68/EEC

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

8

Vers. 02 / 04.98

As far as applicable for a.m. directives the apparatus A 35 - S
complies with the following standards:

• EN 61010-1 • EN 55011 • EN 50082-2

• EN 61010-2-041 • EN 50081-1

• applicable standards of the series DIN VDE 0100, in

compliance with IEC 364

Furthermore this sterilizer complies with DIN 58 946, part 5,
actually known requirements of the future European standards
for small steam sterilizers, requirement level S (draft prEN
13060-1 and draft prEN 13060-4).

The apparatus contains a pressure chamber of "Test Group I"
in compliance with §8 of the German Regulations for Pressure
Vessels. We thus confirm, that pressure vessel and locking
device are constructed in accordance with all applicable
Technical Regulations for Pressure Vessels and AD­regulations, have been properly manufactured and submitted
to a fluid pressure test. In addition, an acceptance test
comprising a specification test and an equipment test has
been administered by the quality assurance section.

Within the framework of a type test in accordance to the
German Regulations for Pressure Vessels the register mark
TÜV- DB 123/01 was formally issued.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 9

Vers. 02 / 04.98

5. Apparatus Overview

167

54328

Illustration 1: WEBECO A 35 - S, Front View

1. Pressure gauge 5. Drainage Valve

2. Main Switch 6. Chamber Door

3. Operation Quick Guide 7. Apparatus Name Plate

4. Aeration Filter 8. Cover Feed Water Reservoir

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

10

Vers. 02 / 04.98

5.1 Pressure Gauge (1/1)

With the black pointer of the pressure gauge the
relevant/present chamber pressure is displayed.
The red drag pointer shows the highest pressure that has
been reached during the program-run, if he has been reset to
„0“ before the program-start.

green: appropriate conditions
red : inappropriate conditions
>0< : door may be opened

5.2 Main Switch (1/2)

The main switch lightens green when it is switched on.

5.3. Aeration Filter (1/4)

Please pay attention to chapter 9.4 „Replace Aeration Filter“
when changing the filter.

5.4 Drainage Valve (1/5)

To drain the water reservoir put the draining hose onto the
valve and open it by turning it left.

5.5 Chamber Door with Rotary Closing Device (1/6)

Please pay attention to chapter 9.4 „Replace Door Sealing“
and „Grease Spindle at the Rotary Closing Device“.

5.6 Apparatus Name Plate (1/7)

If there are any questions to the customer service please
provide the production-No. which is indicated here.

5.7 Feed Water Reservoir (1/8)

When charging the feed water reservoir for the first time,
15L of demineralized or destilled water have to be filled in. If

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 11

Vers. 02 / 04.98

the red display „Water Shortage“ is enlighted, please refill 5L
demineralized or destilled water.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

12

Vers. 02 / 04.98

Illustration 2:

245

678

1

WEBECO A 35 - S, Display- and Operation Unit

3

1. Program Start 121 °C 5. Display Residual Time

2. Program Start 134°C 6. Thermometer

3. Program Indicator 121°C 7. Display Water Shortage

4. Program Indicator 134°C 8. Display Door unlocked

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 13

Vers. 02 / 04.98

5.8 Program-Start-Key 121°C (2/1)

This key starts the program „Instruments Thermolabile
121°C“.

5.9 Program-Start-Key 134°C (2/2)

This key starts the program „Instruments General, 134°C“.

5.10 Program Indicator 121°C (2/3)

During the program-run the green display is enlighted. The
end of the program is signalized by a flashing indication.

5.11 Program Indicator 134°C (2/4)

During the program-run the green display is enlighted. The
end of the program is signalized by a flashing indication.

5.12 Display „Residual Time“ (2/5)

The residual time is shown in minutes from the program-start
to the program-end.

5.13 Thermometer (2/6)

The Thermometer shows the actual temperature in the
chamber.
grey : appropriate conditions
red : inappropriate conditions

5.14 Display „Water Shortage Feed Water Reservoir“ (2/7)

Fill demineralized water or destilled water into the reservoir
when the indication is red.
The device can not be started in this situation.

5.15 Display „Door unlocked“ (2/8)

The indication is shining yellow when the door-lock is
unlocked. Please open the door only in this situation,

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

14

Vers. 02 / 04.98

additional to this the indication chamber pressure has to
show >0<.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 15

Vers. 02 / 04.98

Illustration 3: WEBECO A 35 - S, Rear View

412

3

1. Cool-water supply / condensate drainage,
connector G ¾

2. Cool-water intake, connector G ¾

3. Electrical connecting cable with sealed contact plug

4. Manufacturer Name Plate

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

16

Vers. 02 / 04.98

5.16 Cooling Water/Condensate Drainage (3/1)

Connect hose for shared outlet of condensate and - if
necessary - cooling water here.

ATTENTION !

Do not use the optional salable condensate reservoir when
using the A 35 - S with supplemental cooling. Operating the
apparatus with supplemental cooling requires the connection
of the connection pipe (contained in supply schedule) to an
outlet to be provided on-site (see chapter 7.1).

5.17 Cold Water Supply (3/2)

When using supplemental cooling (see chapter 7.7) connect
pipe here as described in chapter 7.1.1.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 17

Vers. 02 / 04.98

6. System Functions

The WEBECO Small-Steam-Sterilizer A 35-S operates with
streaming and saturated steam and functions according to
the flow processing procedure.

The feed water which is required for the production of steam
is filled in a feed water container.
This feed water container has to be filled with demineralized
or deionized water (approx. 15 liters) after removing the
cover of the housing.
From this container the required amount of feed water will be
metered into the sterilization chamber automatically during
the program run.

The chamber is designed so that the required steam is
produced in the bottom part. Cooling water can be connected
to the apparatus to shorten the program run up to 10-15% or
when the apparatus is frequently used for example 3 times
directly one after another.

The required dosage is automatically produced during the
different phases.

The drying vacuum prevents from steam exhaust when the
door is opened.

After loading the door is shut steamtight by turning the
closing spindle. For the sterilization process the respective
program will be selected and started.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

18

Vers. 02 / 04.98

The following programs may be selected:
Program 1 : General Program for Instruments 134°C

Program 2 : General Program for thermolabile

Instruments 121°C

With program start, the sterilization cycle progresses as
follows:

a) The sterilization chamber automatically fills with

a metered amount of feed water.

b) The steam, created through heating up, displaces the

remaining air from the chamber

c) The holding time phase commences when the operating

pressure and thus the sterilization temperature,
(provisions for saturated conditions), is reached.

d) At the end of the holding time, a decrease in pressure

occurs and the drying phase begins, supported by
physical vacuum.

e) The sterilization cycle is finished by ventilation of the

sterilization chamber.
This is visually displayed by a flashing program
indication (2/3;2/4). Before opening the door please
ensure the pressure indicator (1/1) showing >0< bars.

Actual pressure- and temperature values can be monitored
at the different instruments (1/1;2/6).

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 19

Vers. 02 / 04.98

After starting the program cycle it cannot be interrupted.
Interruption of the power supply (main switch 1/7) however,
is followed by a program break. After power coming back, a
failure recovery program automatically is activated (see also
chapter 7.4), which leads to a safe system condition by
which the sterilization goods can be unloaded without risk of
hazard, however not sterile . The door can not be opened
before this process (see chapter 7.5) !

CAUTION!

When loading or unloading the chamber, the door plate and
the chamber walls are preheated. Do not touch these areas!
Danger of burning!

ATTENTION!

Proper and safe sterilization requires an immaculate water
quality for the steam-generator. Use only demineralized
water or aqua. dest.!

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

20

Vers. 02 / 04.98

INDICATION:

As the connection hose (3/2) is under full pressure of the
water supply whenever the inflow of the cooling water is
automatically interrupted, the intake line should be regularly
checked to ensure its proper condition, (no tears, proper
connections)!

Optionally a water-stop-device (part-no.: 02 41 73) can be
provided to be set between the raw water valve and the
connecting hose to the sterilizer (see also chapter 10). This
is to avoid severe water damage due to burst hoses.

IMPORTANT:

After completion of the last sterilization process of the day
the apparatus and - if cooling water is used - the water are
to be turned off.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 21

Vers. 02 / 04.98

7. Installation and Operation

7.1 Installation

The installation of the apparatus should be performed by two
persons who grip lateral under the apparatus for carrying.
The location for the A 35-S may be freely chosen. The
location of the device has to provide a horizontal surface.

To avoid infringement of the device by heat stagnation, care
should be taken for free ventilation of cooling air for access
below the bottom plate and escape from the top of the back
plate, when emplacing the unit.

The apparatus is specially designed to ensure a steam-free
working environment. A Drainage-steam-line is not
necessary. If cooling-water is used, however the chosen
location must be able to facilitate a cooling water intake and
drainage-pipe connection with the apparatus.

For the working of the device without the supplemental
cooling water intake a condensate container is available
(part-no. 03 01 53). It is used for the condensate which
obtains during the sterilization process.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

22

Vers. 02 / 04.98

7.1.1 Water Supply

With regard to the water supply, the provisions of the DVGW
in accordance with DIN 1988, part 4, (Technical Regulations
for Drink-Water Installations), are to be followed.

a) Cooling Water Inflow (3/2)
The cooling water delivery pipe (hose with a connector on
both sides G3/4) is connected to the cooling water inflow
(3/2) and the on-site G ¾ water valve. The cooling water
inflow is provided with a hinged cover which is to be
removed from the cooling water delivery pipe before it is
connected. The hinged cover should be stored at a secure
place.

In the case of equipment failure, the back-flow of processed
water, (used drinking water), into the drink-water system is to
be prevented by a back-flow prevention device, either as
single safety system at the apparatus supply or via a
collective safety device system for the work area,
(department, practice, etc.).

As single safety system, a back-flow prevention device with
pipe ventilation, which screws directly onto the water valve
G 3/4, may be supplied, (article no. 5 1630 0120), (to be
installed at the wall). Please note, that the water valve must
be situated at least 150 mm above the apparatus supply, (see
chapter 10).

IMPORTANT:

When deinstalling the Water Cooling the cooling water inflow
has to be tightened with the lock again. Otherwise water
leakage is possible.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 23

Vers. 02 / 04.98

b) Cooling Water and Condensate drain (3/1)

Working with an existing drain or with an additional cooling
the drain line (hose with one connector G3/4) is connected
at the cooling water and condensate drain (3/1) and a drain
on the part of the builder.
Working without an additional cooling and if no drain is
existing on-site the drain line is connected with an optional
deliverable condensate reservoir (article no. 03 01 53). The
water level is to be inspected before every start of the
program. A filled up reservoir has to be changed at once,
otherwise the condensate reservoir might overflow.

The drainage pipe is to be installed as free drainage
(analogue dish washing machine drain or freely (> 20mm)
ending above gully). This drain must be suited lower than the
bottom of the apparatus. Care should be taken to arrange
the drainage hose such that no water backwash occurs.

IMPORTANT:

The working of the apparatus with the condensate reservoir
is only possible without the supplemental cooling. If this is
not considered the condensate reservoir is overflowing.

c) Connecting Pipes

Suitable connecting pipes for supply and drainage of cooling
water resp. condensate are included in the delivery.

7.1.2 Electric Supplies

The sterilizer may be connected to a fixed socket with sealed
contact for alternating voltage.

Electrical power
2,1 kW at 230 V AC - 50Hz

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

24

Vers. 02 / 04.98

7.2 Operation

7.2.1 Operating Prerequisites

- Ensure, that the apparatus plug is inserted into the socket.

- Ensure, that the water hoses are properly connected.

- Switch on mains

- Open the water line if supplemental cooling is connected

- Turn the red drag pointer of the pressure gauge left to „0“.

- Open door

7.2.2 Operating Procedure

7.2.2.1 Loading the Sterilizer

The sterilization material is loaded into the chamber in
sterilizing baskets, trays or dishes. Unwrapped solid material
(no hollow materials) may be sterilized up to a weight of max.
3kg. Solid material wrapped in appropriate sterilization load
wrapping may be sterilized up to 1kg max. See details in
chapter 7.223 to 7.225.

WEBECO offers containers, suitable for this sterilizer, made
from aluminium, or baskets made from stainless steel (see
accessories list).

ATTENTION !

When loading or unloading the chamber the door plate and
the chamber walls are preheated. Do not touch these areas!

Danger of burning!

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 25

Vers. 02 / 04.98

INDICATION :

The height of the wrapped and unwrapped sterilization load is
to be limited, so that the minimal distance to the upper edge
of the loading equipment or inside of the lid or stack (basket
on basket or bowl on bowl), is at least 2cm.

Instruments in sterilization wrappings (e. g. Transparent
Foil/Paper wrapping) are to be placed in aluminium dishes
flatly on the paper-side of the wrapping. The wrappings may
not be placed on top of each other res. they may not
overlap. Items with areas on which condensate may be
produced are to be arranged so that accumulating
condensate may drain out.

After loading the door is to be shut. Give the closing spindle
a firm turn clockwise. Closing of the door is monitored by a
door contact switch.

ATTENTION !

The sterilization of liquids i. e. warmth-volatile materials is
not permitted. Danger of explosion!

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

26

Vers. 02 / 04.98

7.2.2.2 Cleaning of the Sterilization Material prior to

Sterilization

In order to comply with the requirements of sterilization load
maintenance, proper cleaning of sterilization materials is
absolutely essential. The cleaning of instruments, glassware,
pipettes, etc., is also essential to avoid that oil- and protein
containing contaminants burn in and thereby discolour
instruments and sterilizer (Scalding).

Proper cleaning is possible, if the instruments are soaked in
water, which contains fat- and protein dissolving substances,
for ca. 30 minutes. This is then followed by thorough rinsing
and drying of the instruments. In addition to the removal of
contaminants, special care is to be taken that wash-active
substances (WAS) are removed. For the last rinsing act
demineralized water or destilled water shall be used!

The sterilization material then is to be dried.
If oil treatment is recommended by the manufacturer prior to

sterilization, only emulgating special instrument oil may be
used for the treatment of the sterilization material.

To avoid that oil and other contaminants from the sterilization
goods drip into the dosing container, a water separation
system has been arranged in the apparatus, i. e.
contaminated condensate will be wasted.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 27

Vers. 02 / 04.98

7.2.2.3 Wrapping and Loading of Sterilization Load

For wrapping sterilization goods and sterilization load supply,
bags made from sterilization paper according to DIN 58 953,
part 3, or from transparent sterilization wrapping, (paper and
foil), according to DIN 58 953, part 4, are to be used.
The seal seams should have a minimal width of at least 6
mm; double seams are recommended. Between seam and
sterilization load there should be a free gap of at least 30
mm.

Alternatively the sterilization goods may be sterilized
unwrapped in sterilization containers.

Using paper as sterilization wrapping keep in mind
DIN 58953, part 2.

The maximum load for massive wrapped instruments is

1.0 kg.

Instruments in sterilization wrappings are to be placed in
aluminium dishes flatly on the paper-side of the wrapping.
The wrappings may not be placed on top of each other resp.
they may not overlap. Items with areas on which condensate
may be produced are to be arranged so that accumulating
condensate may drain out.
The load has to be distributed equal on different sterilization
trays if there is a great volume of massive wrapped
sterilization goods.

ATTENTION !

Plastic bags or tubes are not suitable for sterilization wrapping
and should be avoided at all cost, i.e. only used as storage
wrapping at a later stage.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

28

Vers. 02 / 04.98

The sterilizer A 35 - S is supplied complete with an insert tray
with removable bearing rails for holding dishes and trays.
When loading a basket, the tray is removed.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 29

Vers. 02 / 04.98

IMPORTANT:

For an optimal drying transparent-sterilization wrapping is
recommended (paper and foil) according to DIN 58 953 in
relation with dishes made of aluminium. When using other
wrappings res. other materials (plastics, stainless steel) the
drying of the sterilization goods is significantly reduced so
that additional drying times (e. g. 5-10 minutes evaporation
with slightly opened door) are recommended.

ATTENTION !

Cellulose- and cotton surfaces are not suitable!

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

30

Vers. 02 / 04.98

7.2.2.4 Post-Treatment of Sterilization Material

When unloaded from the sterilizer, all material sterilized with
steam contains residual moisture, which should evaporate
freely when the material is cooled.

Compared to containers made from aluminium or wire
baskets, the conditions for stainless steel and chromium
plated brass are particularly unfavourable.

Overloading the sterilizer has negative consequences for the
drying result.
Passing the commended times of sterilization without
additional cooling the drying of the sterilization goods is
significantly reduced so that additional drying times (e. g. 5­10 minutes evaporation with slightly opened door) are
recommended (see chapter 6).

INDICATION :

If dishes or trays are used, they should not be set onto flat
and solid surfaces. The condensate coat created by cooling
down to room temperature may subsequently cause soaking
of the wrapped sterilization material. Therefore, dishes and
trays are better set on grids or other structured surfaces.

CAUTION !

When loading or unloading the chamber, the door plate and
the chamber walls are preheated. Do not touch these areas!

Danger of burning!

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 31

Vers. 02 / 04.98

7.3 Programs

7.3.1 Program Selection/Start

According to the nature of the sterilization load, the following
programs may be selected.

Program 1 : General Program for Instruments 134°C
Program 2 : General Program for thermolabile

Instruments 121°C

The programs will be started with the respective program
start-key. During operation the running program is indicated
by the respective green display (2/3;2/4). At the same time
the door spindle will be locked automatically, that means the
door can not be opened yet (see also chapter 7.5).

IMPORTANT:

The sterilization chamber is pre-heated very much after a
program run at 134°C. At a directly following program run of
thermolabile instruments (121°C) the good might be
damaged. Please wait at least 10 minutes for cooling down
leaving the chamber door open.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

32

Vers. 02 / 04.98

7.3.2 General Program for Instruments 134°C

This program is designed for sterilization of wrapped (see
chapter 7.2.2.3) or unwrapped solid sterilization material (no
narrow-lumen hollow objects). The sterilization time is 5
minutes.

ATTENTION !

The net loading weight (sterilization goods without baskets,
containers etc.) is given for:

Instruments unwrapped Instruments wrapped
max. 3,0kg max. 1,0kg

This program will proceed as depicted in the following line
graphic:

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 33

Vers. 02 / 04.98

3000

1013

Pressure
in mbar abs.

0

Pressure Increase

Pressure

Increase

Holding Time

5 Minutes at 134°C

Sterilization Drying Phase

Sterilization Cycle

Pressure Decrease

Postvacuum

Drying Time

Venting

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

34

Vers. 02 / 04.98

7.3.3 General Program for thermolabile Instruments 121°C

This program is designed for the Sterilization of wrapped or
unwrapped thermolabile solid sterilization material (no
narrow-lumen hollow objects). The sterilization time is 20
minutes.

ATTENTION !

The net loading weight (sterilization goods without baskets,
containers etc.) is given for:

Instruments unwrapped Instruments wrapped
max. 3,0kg max. 1,0kg

This program will proceed as depicted in the following line
graphic:

3000

2000

1013

0

Pressure
in mbar abs.

Pressure Increase

Holding Time

20 Minutes at 121°C

Pressure Decrease

Postvacuum

Drying Time

Venting

Pressure
Increase

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 35

Vers. 02 / 04.98

Sterilization

Sterilization Cycle

Drying Phase

7.4 Notification- and Failure Reports

Functions and operating conditions of the sterilizer are
continuously controlled by the internal computer control.
In case of malfunctions or deviations an alarmcode is
displayed in the residual time display.

7.4.1 Indications

Text in
Display Cause Countermeasure

s

A1 pressure switch

defective

A2 Pressure Increase too

long

A3 Exceeding reswitching

time of Heating
Element

A4 Failure Power Supply Failure of Power

cable break
pressure switch
defective
Water Shortage
Untightness
Heating defect

Water Shortage
unsuitable
Loading
Too much
Loading

Supply

Notify customer
service

Refill Water
Notify customer
service
Notify customer
service
Refill Water
see Operating
Instruction chapter

7.2.2
Reduce Loading
Test Power Supply
existing supply
voltage notify
customer service

ATTENTION !

If failures are indicated and the cause can not be rectified,
the appropriate customer service is to be informed.

CAUTION !

If a program ends with a failure, the sterilization material is
considered to be non-sterile.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

36

Vers. 02 / 04.98

After a failure hot water may stand in the chamber and rinse
out when opening the door.

Danger of burning!

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 37

Vers. 02 / 04.98

IMPORTANT:

If failures occur during the process, a recovery program will
run automatically, so that the device is in a predetermined
and safe operation condition and that the apparatus door
may safely be opened.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

38

Vers. 02 / 04.98

7.5 Automatic Safety Lock

To ensure the safety of the operator, the sterilizer chamber
is automatically secured by a door locking mechanism. The
condition of this mechanism is indicated by the yellow
display (2/8).

7.5.1 Door Spindle Interlock

At the start of a program cycle (pushing the „Start“ button(2/1;
2/2)), the door spindle is locked automatically. In this
condition, the door spindle may only be turned one quarter
rotation counter clockwise, until the mechanism locks.

The door spindle is not allowed to be tightened up or further to
be closed during the running program.

7.5.2 Unlocking of Door Spindle

When switching on the sterilizer or at end of one program the
door interlock device system is released and the door may be
opened. This condition is indicated by the shining of the yellow
display (2/8).

INDICATION:

If an attempt to open the door has been made while a
sterilization process was in progress, please take note of the
following:

1. After correct program run „Program End“ release the
locking device mechanism by applying a slight turn.

2. The door locking device system can then be opened as
usual, by turning the spindle counter clockwise.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 39

Vers. 02 / 04.98

7.5.3 Opening the Door during Power Failure

During power failure the door can not be opened because of
the automatic safety lock. An emergency unlocking may only
be performed by the customer service or technical trained
personnel.

7.6 Shutdown of Apparatus

7.6.1 Temporary Standstill

After the final sterilization of the day:

• Interrupt cooling water supply -if water cooling is
installed - through closing of water tap

• Switch off power supply (1/2)

7.6.2 Shutdown of apparatus for standstill or transport
(longer standstill, a few weeks)

• Pull out plug

• If necessary disassemble connecting water pipes

(3/1;3/2) and remove remaining water. Close water inlet
with lock (3/2).

• Turn open drainage valve (1/5) and thoroughly empty

feed water reservoir.

• Wipe out chamber with dry cloth.

• If necessary clean insert tray, instrument dishes and lift,

and store in chamber

• Close chamber door (1/6) without applying contact

pressure, for transport close chamber with applying
contact pressure.

• Pack apparatus and connection pipes

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

40

Vers. 02 / 04.98

7.7 Activating/Deactivating Additional Cooling

The setup-procedure informs the apparatus if cooling-water
is connected as a supplemental cooling or not.
At every change of the method of operation the setup
procedure has to be carried through.

The set-up procedure is initialized if the left key (2/1) is
pressed when switching on the main switch (1/2). As
confirmation „c“ is shown in the display of the residual time.
After releasing the key „00“ or „01“ is shown.

The meaning of the numbers is as follows:
00 : additional cooling off

01 : additional cooling on

When using the right key it is possible to switch between „0“
and „1“. Additional using of the left key (2/1) confirms the
choice.

After releasing of the key the apparatus is in its normal
operating condition. The A 35-S can work in continuos
operation with or without supplemental cooling. Thus the
process-time is shortened by approx. 10-15%.

When working without supplemental cooling after 3
sterilizations directly after one another a reduced drying
capacity or steam disturbance from the water reservoir is
possible.

IMPORTANT:

Operation with supplemental cooling without water supply
leads to highly reduced drying capacity.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 41

Vers. 02 / 04.98

8. Effectiveness Test

8.1 General

The effectiveness of the sterilization process of Automat A35

- S to be tested with:

-thermoelectric measurements and/or

-biological indicators according to DIN EN 866-3

The test is based on:

- DIN 58 946, part 8; Steam Sterilizers, Small Sterilizers,
Effectiveness Test

According to this standard the following tests are to be
conducted:

- operation procedure test prior to first use, i.e. when
acquiring the apparatus

- periodical tests in six months intervals

- special test to detect necessary repairs or
replacement of spare parts which might influence
sterilization performance

- special test, when unsatisfactory sterilization
performance is suspected

IMPORTANT:

The tests and their results are to be documented

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

42

Vers. 02 / 04.98

8.2 Biological Test

The two sterilization programs of the A35-S are to be tested.
The test is to be conducted with biological indicators
according to DIN EN 866-3, part-no. 00 92 92. For this test,
sterilization material and sterilization wrapping appropriate
for respective purpose of the sterilization program is to be
used. The biological test of the A 35 - S is to be conducted in
accordance with DIN 58 946, part 8.

For the biological test 1 to 5 bio-indicators are needed for
each container or dish dependent of the groth of the
sterilization-container respectively of the groth of the dish
with perforated bottom.

Additional to this one bio-indicator is needed. This additional
bio-indicator is the positive-control. This indicator is not
subjected to the tested method. The indicator is not put into
the sterilizer it is not treated.

volume of basket-

/container in liter

floor space of the

sterilization-dish in

quantity of bio-

indicators

cm2

< 1 < 200 1

1-5 > 200 3

> 5 - 5

The bio-indicators are placed in the load of the small-steam­sterilizer at the critical place for the process (see picture).

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 43

Vers. 02 / 04.98

Arrangement of one bio-indicator

in the sterilization-good

Distribution of 3 bio-indicators

in the sterilization-good

Distribution of 5 bio-

indicators in the sterilization-

The indicators remain in their primary-packing (paper). The
indicators have to remain in their packing even after the
sterilization process to prevent a recontamination.

They have to be send in their packing to the WEBECO­customer service or an independent hygienic-institute. There
the used bio-indicators are fertilized and tested if micro­organism grow. The untreated bio-indicator is fertilized as
well and has to show groth.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

44

Vers. 02 / 04.98

9. Maintenance Work

9.1 General

To ensure continued and proper use of the apparatus, regular
cleaning and maintenance work is required. This is to be
conducted by the operator/user or person in charge of the
equipment.

Repairs on the apparatus are to be conducted by the
manufacturer, WEBECO GmbH & Co. KG, or authorized
customer service only!

In addition, we refer to the operator requirements in
accordance with DIN 58 946, part 5, attachment A 4, (repeat
tests), and A 5, (special tests).

ATTENTION !

The apparatus is not explosion protected, therefore the
apparatus may not be treated with cleaning or desinfection
agency which with air could generate an explosive mixture.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 45

Vers. 02 / 04.98

9.2 Maintenance

Nr. Test

Location/NameTest or Activity Reference

1 Chamber floor

insert tray
instrument
dishes

cleaning - by
user/person in
charge of

equipment
Wire sieve
inside
discharge pipe

2 Spindle at

rotary closing
device

greasing - by

user/person in

charge of equip-

ment

3 Reservoir cleaning - by

user/person in

charge of

according
to chapter

9.3

according
to chapter

9.4

according
to chapter

9.4

Times to be
performed

weekly and if
required

weekly

if required,
every three
months

equipment

4 Ventilation filter replacing - by user

or customer

service

5 Entire

apparatus

safety test - by

manufacturer or

customer service

6 Chamber door replacing of seal -

by user/person in

charge of

equipment or

customer service

7 Entire

apparatus

complete overhaul

- by manufacturer

or customer

service

according
to chapter

9.5
according
to chapter

9.1
according
to chapter

9.5

every 6
months and if
required
if required,
every year

if required,
every 2 years

every 5 years

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

46

Vers. 02 / 04.98

9.3 Cleaning

Wipe out chamber with moist cloth and dry. Clean insert tray
and instrument dishes with a wetting agent, rinse off with
clean water and dry.

9.4 Repairs

1. Empty the clean water reservoir (1/5) by turning the
drainage valve.
If the reservoir contains residue, it is to be cleaned
prior to the new fill.
Depending on residue, a cleaning- or fat-dissolving agent
is to be used, which then is to be thoroughly rinsed off.

CAUTION !

Disconnect power supply prior to cleaning!

2. Grease spindle at the rotary closing device.
Remove old fat rests from the spindle, then grease

spindle with high melting point grease.

3. Replace aeration filter

• Switch on the unit and open the door.

• Remove filter and replace with new filter part-no.

02 31 79
Close the door and switch off the unit again.

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 47

Vers. 02 / 04.98

4. Replace door seal

• Switch on the unit and open the door.

• Remove door seal from the groove on the inside of the

door.

ATTENTION !

Be careful not to damage the inside of the door and of
the seal groove.

• Insert new door seal into groove and apply slight
pressure to the door with the closing spindle.

• Switch off the unit again.

ATTENTION !

• Lubricants may not be used.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

48

Vers. 02 / 04.98

10. Spare Parts , Accessories

The following spare parts and accessories are available from
the manufacturer or an authorized customer service:

Article: No. old: No. new:

Aeration Filter 5 2014 0604 02 31 79
Drainage hose reservoir 2 0120 0106 01 21 69
Delivery hose G3/4“ 5 6110 0006 02 51 49
Supply hose G3/4“-G3/4“ 5 6110 0007 02 51 50
Insert Tray 2 or 4 Parts 1 0901 3518 00 16 85
Removal lever for Traydish 1 1112 4920 00 15 93
Removal lever standard 1 1112 4750 00 15 89
Door Seal 5 5405 3502 02 48 47
Instrument Dish, aluminium 35x18x3cm 1 0901 3518 00 11 63
Sterilization Container, aluminium

1 1109 6481 00 14 69

35x18x5cm
Sterilization Container, aluminium

1 0935 1818 00 11 93

35x18x18cm
Sterilization Basket stainless steel

1 5904 3501 00 92 32

35x18x8cm
Sterilization Basket stainless steel

1 5904 3502 00 92 33

35x18x18cm
Tray dish, aluminium 28x19x4cm 1 5928 1904 00 92 74
Tray dish, aluminium 28 x 19 x 3 cm 1 5901 2819 00 92 25
Back Flow Prevention 5 1630 0120 02 29 39
Water Stop Device 5 4107 0200 02 41 73

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 49

Vers. 02 / 04.98

Condensate Reservoir - 03 01 53
Biological Indicator (one item) 1 6002 1310 00 92 92

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

50

Vers. 02 / 04.98

11. Operation Quick Guide

1. The water container has to be filled with demineralized
or destilled water. Switch on mains.

2. Load sterilizer, (see chapter 7.2.2.1).
Please see chapter 7.3 for loading instructions.

3. Close door and firmly turn closing spindle clockwise.

4. Turn the red drag pointer of the pressure gauge (1/1)
left until „0“ is displayed.

5. Start suitable program according to kind of load to be
sterilized by pressing the program-start-key (2/1;2/2).
The running sterilization-cycle is shown through the
program-display (2/3;2/4) above the „Start“ key.

6. After the start of the sterilization-cycle the residual-time­display (2/5) shows the remaining time until the
„Program End“.

7. The end of the program is indicated by a blinking
program-display (2/3;2/4).
The sterilization material may be unloaded.
While pressure reading >0< (black pointer) it has to be
tested, if the necessary sterilization pressure 1,1 bars ­121°C, 2,1 bars - 134°C, has been reached.
Otherwise the sterilization load must always be
considered non-sterile.

8. Turn the closing spindle counter clockwise for opening
of the door (see chapter 7.5).

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 51

Vers. 02 / 04.98

9. Turn off apparatus after unloading it. Opening of the
door after switching off power supply is not possible
(see chapter 7.5).

10. Attention! Indication messages need attention, although
the sterilization load may be used.

When failures occur, the sterilization load must always
considered non-sterile.
Wait always until complete automated failure recovery
cycle has passed.
If necessary, notify the customer service.

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

52

Vers. 02 / 04.98

WEBECO Hygiene in Medizin
und Labor GmbH & Co. KG
Mühlenstr. 38

D-23611 Bad Schwartau

Telefon: 0451 / 2 80 72-0
Telefax: 0451 / 2 80 72-31 + 2 80 72-53

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 53

Vers. 02 / 04.98

12. Index

A

Accessories ......................................................................44

Ambient Conditions..............................................................6

Apparatus Description.........................................................5

Attention............1; 15; 18; 23; 24; 26; 27; 30; 31; 32; 40; 43

B

Basket.........................................................................24; 38

Biological Indicators ....................................................37; 38

Biological Test...................................................................38

Break...........................................................................18; 32

C

Caution..............................................................1; 28; 32; 42

Cleaning......................................................................25; 42

Cleaning of the Sterilization Material ..................................25

Connection Data..................................................................6

Containers...................................................................23; 28

Cooling........................15; 19; 20; 21; 22; 23; 28; 29; 35; 36

D

Dimensions..........................................................................6

Door Spindle......................................................................34

Drainage....................................................10; 11; 15; 20; 44

E

Effectiveness Test.............................................................37

Electric Supplies................................................................22

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

54

Vers. 02 / 04.98

F

Failure Reports ..................................................................32

Feed Water Reservoir .................................................11; 35

I

Important ...................................2; 19; 21; 22; 27; 29; 33; 36

Indication.............................................................1; 2; 24; 28

Installation.....................................................................6; 20

Instruments....................................13; 17; 24; 26; 29; 30; 31

Interruption........................................................................18

L

Loading .................................................................23; 26; 32

M

Maintenance............................................................4; 40; 41

Manufacturer.................................................................5; 14

N

Net Loading Weight.....................................................30; 31

O

Oil Treatment.....................................................................25

Operating Prerequisites.....................................................23

Operation........................................6; 10; 12; 20; 23; 36; 45

P

Preliminary Notes................................................................1

Pressure Chamber...............................................................7

Program Selection.............................................................29

Programs...............................................................17; 29; 38

Q

Quick Guide.................................................................10; 45

R

Recovery Program......................................................18; 33

References to Illustration.....................................................2

A35SE1-2 WEBECO Hygiene in Medizin und Labor GmbH und Co. KG 55

Vers. 02 / 04.98

Repairs........................................................................40; 42

S

Safety Indications................................................................3

Safety Lock.......................................................................34

Service ................................................................................4

Shutdown of Apparatus......................................................35

Spare Parts.......................................................................44

Specifications......................................................................6

Standards............................................................................8

Standstill............................................................................35

Sterilization of Liquids........................................................24

System Functions..............................................................16

T

Table of Contents.................................................................I

Technical Parameters ..........................................................7

Thermoelectric Measurements ...........................................37

Time ............................................................................12; 13

Tray...................................................................................44

W

Water Quality....................................................................18

Water Supply...............................................................15; 21

Weight.................................................................................6

Wrapping...................................................23; 24; 26; 27; 38

Wrapping and Loading of Sterilization Load.......................26

WEBECO Hygiene in Medizin und Labor GmbH und Co. KG A35SE1-2

56

Vers. 02 / 04.98