AS 66 – Proven Hospital Sterilizers
The AS 66 Series Steam Sterilizers manufactured by SMS have been designed in conformance
with valid Polish and European standards, to be operated with standard charge units with the
size of 300x300x600 mm. Such standards are also complied with packaging systems (baskets,
trays, cans) and conveyance systems (charge and transport carts).
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Te c h n i c a l f e a t u r e s :
Double–ended sterilizer – loading and unloading doors are located on opposite sides of the sterilizing
chamber, or single–ended sterilizer – loading–unloading door is located on one side of the chamber
Steam supplied either from an external source, or from own (integral) steam generator
Sterilizing chamber with heating jacket and doors made of stainless steel
Outer walls (housing) made of stainless steel
Support structure (main and side frame) made of stainless steel
Deaeration stage consisting of fractioned vacuum phase
Selectable drying methods: vacuum, vacuum–ventilation
and vacuum–steam drying
Automatic microprocessor control
Control of particular sterilizing cycle stages
Simplicity of programs operation by multifunction keyboard
Possibility to set up user’s own programs
Operation codes for non–standard programs
Password–protected access to menu
RS 485 port for connection of an external PC system
LCD graphic, colour display, equipped with touch–screen – to display complete information on process
parameters and its progress. Additionally it can be used as an accessory keypad
Sterilizing cycle parameters recording unit, independent from control system
Built–in printer for printing out sterilizing cycle protocols (identification of a sterilizer, selected program
parameters, sterilizing chamber pressure and temperature, date and time etc.)
Digital indication of sterilizing chamber temperature
Digital indication of steam pressure in the chamber and jacket
Independent temperature sensor for controlling sterilizing cycle
Absolute pressure transmitter – to provide reading unaffected by atmospheric pressure
Systems to reduce water consumption and to lower drain water temperature
Easy to install
Easy to operate, comfort in use
Easy access to all components for maintenance from the side and through pivoting front covers
The AS 66 Sterilizers can be tailor made
to individual requirements.
Unique construction solutions are SMS area
of expertise. Any Client involved in purchase
of a single sterilizer or furnishing the entire
sterilizing plant can rely on the expertise
and advice of our personnel. All equipment
ordered in our company is tailor–made to
suit individual technical requirements and
architectonic features; it is easy to operate,
providing an easy access for maintenance.
Uniform Heating of Sterilizer Chamber
The sterilizing chamber, together with the heating jacket
and door, is made of chromium–nickel–molybdenum
stainless steel. All inner surfaces have undergone special
finishing treatment – by grinding and polishing.
The sterilizing chamber is equipped with the heating
jacket that ensures uniform heating of chamber walls
to reach the sterilizing temperature. Properly shaped
deflectors, fitted in steam inlets to the chamber, allow
uniform and quick spreading of steam in the chamber,
and prevent local overheating. Our many years experience
and temperature distribution research made it possible
for us to construct a chamber, in which temperature
variations at any point do not exceed 1°C.
The chamber with heating jacket are insulated with a layer
of mineral wool, to reduce loos of heat and to ensure safe
operation.
Versatility of the sterilizer ensures separation of the sterilizing chamber from heating space and heating jacket from
steam generator or from an external steam source. Steam
from the generator or from external source is fed through
a cut–off valve to the heating jacket. In turn steam,
through another cut–off valve, reaches the interior of
sterilizing chamber. Such a configuration makes it possible
to sufficiently heat the chamber walls before its charging
and closing, what in turn substantially reduces steam
condensation on walls while the chamber is being filled
in with steam, and reduces consequential moisturising
of the sterilized items.
Furthermore, separation of the chamber from heating
jacket allows – prior to exposure phase – to create
fractional vacuum inside, to ensure sufficient deaeration
of the charged chamber, and – following the exposure
phase – to generate negative pressure ensuring rapid
drying of the charged material. During drying process,
both in the steam generator and in the chamber the steam
operating pressure is maintained, to make the sterilizer
readily available for another sterilizing cycle. This ensures
maximum efficiency and an uninterrupted operation
of the unit.
The sterilizing chamber is equipped with two measuring
connections for validation procedure: test connection for
pressure gauge – pipe thread acc. to ISO 228–G 1/2 A,
and connection for temperature sensors – pipe thread acc.
to ISO 228–G 1 A.
Practical Door
Chamber door, in a form of flat, rectangular finished slab
is guided on rails. Rails are provided with special interlocks
to prevent door fall in case of actuator pressure failure.
The interlock is released for opening the chamber by
compressed air. The door opens under its own weight
once the pressure is released from the actuators.
It is possible to stop the door in any position. To do so, press
the emergency strip on the door upper edge. The door is
opened and closed automatically, by pressing a key.
The basic sealing element of the door is a gasket of round
cross section, located in the chamber groove. Once a program is started, the gasket is pressed against the door by
steam pressure present in the groove, what ensures a seal
between the door and the sterilizing chamber.
High–Performance Steam Filter
The sterilizer can be externally supplied by steam. For such
an application, it will be fitted with high–performance
steam filter (separator), which is to separate water droplets
from steam.
Economic Steam Generator
The steam generator is made of stainless steel and fitted
with water gauge glass terminated outside the sterilizer
housing front wall.
The generator is provided with the so–called economic
heating mode, in which two heaters are on. Six heaters
operate only at the beginning of the initial process, and
during the exposure phase.
Ecological Vacuum Generating System
The AS 66 Steam Sterilizers are equipped with efficient
vacuum pump with a spinning water ring. The process
liquid (water) forming a spinning ring is continuously
supplied. As a result the space between vanes is
leak–proof, and water is consequently removed together
with air being pumped out of the chamber. In order to
reduce water consumption, the process liquid is separated
from air and reused. The vacuum generating system allows
to achieve negative pressure equal or less –93 kPa
(7 kPa of the absolute pressure).
Air is removed from the sterilizing chamber by means of
fractioned vacuum method. During that phase multiple
pressure changes take place in a pre–programmed manner, ensuring effective air removal from various charge
types. At the same time the charge is preheated. The
deaeration phase comprises several repeated stages. Each
stage commences by achieving required negative pressure,
followed by pulsatory steam rinsing followed by steam
supply.
Efficient Air Filter
Programs involving vacuum drying phase at the end of
sterilizing cycle require air to be drawn into the sterilizing
chamber from the immediate atmosphere. Therefore, the
AS 66 Steam Sterilizers are provided with sterile air filter,
which stops not less than 99.999% of particles larger than
0.30 µm.
Control System
The sterilizer and the built–in steam generator are
controlled by the microprocessor ESS–405 controller,
designed by ELMI especially for the needs of automation
systems in steam sterilizers.
All the operations: feeding steam into the chamber,
maintaining constant exposure phase temperature, cycle
progress, door opening and closure, and – in case of
built–in steam generator – automatic filling of the generator boiler with water, maintaining constant water level in
the boiler, controlling the operation of heating elements in
a manner to ensure keeping constant steam pressure,
are continuously managed by the control system. There
are sterilization programs and test modes permanently
saved in the controller’s memory namely: Bowie–Dick test
and sterilizing chambers air leakage test.
The control system is provided with self–test mode
which can detect over 60 scenarios of sterilizer
operation:
• Supply media levels (water, air, steam) – shortage of any
is responded to
• Pressure under the door gaskets
• Correctness of door opening and closure
• Analogue sensor system – shorting or opening of individual sensor and exceeding measuring range is signalled
• Status of individual automation system components
i.e. such as: contactors and door interlocks
• Exceeding set up pump operation time
• Selection of components prior to assembly
Response to the malfunction detected varies depending
on location of fault (i.e. which of the control system
components operates incorrectly), time of occurrence
(another reaction can occur during sterilizing process
or anytime), and on the extent to which it affects the
proper process. The decision on how to respond is made
automatically in the sterilizer control system. The fault
messages are displayed on the control panel.
• Moisture and temperature sensors to warn the operator
any time the environment parameters of the controller
are exceeded
Modifications of the program parameters are protected
by password, which must be entered to allow modification
to be made. Another code allows access to service menu.
• Controller testing procedures
Additionally the so–called ‘intelligent keypad’ solution
has been incorporated, in which only those keys are active
which are currently used by the control system. The
others, despite being pressed, stay inactive (e.g. only stop
and process parameter display keys are active).
The reliability of the controller is ensured by the
following:
• Surface assembly technologies SMD
Sterilizer Control Unit (Clean Side)
Process Recording
On the clean side of the sterilizer a control
panel is located. The panel includes:
The lower part of the control panel houses a printer which
cooperates with sterilization cycle parameters recording
unit, which is independent from the control system.
• LCD display with touch–screen
• Program selection keys
• Program start and termination key
• Door operation keys
• Emergency process termination key
The cycle parameter recording system meets the EN 285
standard requirements, in terms of digital registering
instruments. The inlet and outlet circuits, read and write
accuracy and operational algorithms ensure conformance
to all other requirements of the a/m standard.
• Sterilizing cycle change key
All basic (required) sterilizing cycle parameters – listed
below – are subject to recording and printing:
• Mains switch
• Temperature in the chamber
• Emergency switch
• Pressure in the chamber
• Printer
• Date and time of cycle start
The LCD display (colour graphic display
with touch–screen feature) provides
complete information on the process
parameters and at the same time serves as
an accessory keypad. The display provides
the following information:
• Parameters of selected and
executed program
• Selected program number
• Current sterilizing cycle phase (including division into
individual stages of given phase)
• Progress of the current phase during a cycle
• Value and type of parameter necessary to complete
given stage or phase (set parameter, e.g. exposure temperature or duration)
• Current values of temperature (with accuracy reaching
0.1°C) and pressure present both in the chamber and
sterilizer jacket
• Duration of the current sterilizing cycle, counted from
the beginning, as well as duration of the active phase
in a given cycle and of the subsequent stage during
a phase, time remaining until phase completion
(e.g. during exposure or drying phase)
• Sterilizing cycle temperature and pressure inside the
chamber – in a form of graph
• Messages on malfunctions detected by automatic control
system during operation of the equipment – information
for operators
• Statistical data concerning individual sterilizer, such as:
number of the cycle performed, number of the cycle
within a given day, dates of last test programs, sterilizer
operation time
• Sterilizer identification data: type, manufacture version,
factory number, date of manufacture etc.
Additionally, the display serves as an accessory keypad
(active touch–screen), once an additional password is
entered the following additional data will be displayed:
service menu, maintenance and configuration data
including calibration setting options.
• Sterilizing cycles counter
• Sterilizer identification data
(type, factory number, date
of manufacture)
Additionally, the printout
will include:
• Messages relating to malfunctions
detected during equipment
operation by the automatic
control system
• Sterilizer operation time
• Number of cycles executed
within a given day
• Last Bowie–Dick test execution
date
• Last air leakage test date
• Summary including detailed
durations of particular phases
of sterilizing cycle and information
on the correctness of cycle progress
• Sterilizer user identification (e.g. hospital name)
Once the sterilizer is turned on, the recording unit
automatically prints all cycles executed in the sterilizer,
including Bowie–Dick and air leakage tests. The only
user–intervention required is to replenish paper in the
printer bin and to change ink ribbon anytime the print
quality gets low.
The process data printing is effected synchronically after
any sterilizing cycle is activated. The operator has no
possibility to interfere with recording process of the
sterilizing cycle data.
The device requires no control operations by the staff –
recording process is fully automated.
Sterilizer Control Unit
(Sterile Side)
The control panel of the sterile side includes
signalling fields, which display current sterilizing
cycle progress, condition of doors on the clean
side and occurrence of faults, door operation
and emergency process termination
pushbuttons, as well as the emergency switch.
The control panel is provided with
the emergency switch, having
two functions:
• While the door is moving, pressing
the button causes the door stop instantly;
alarm message is displayed
• During the sterilizing cycle, pressing
the button stops the cycle – all valves supplying media to the chamber will
be closed
Cooperation with an external
PC system
Each sterilizer can operate in computer network environment. As an optional
feature, SMS offers the MEDOK system – special dedicated software created
by ELMI, and designed for evidencing operation of individual sterilizers
or central sterilizing departments. The main component of the system
is the module called “DOKUMENTATOR”.
The program automatically evidences operation of the entire sterilizer
(cycle data, sterilizer configuration data, service data and many others)
by writing them on a computer hard disc in a protected database.
The evidenced data can be recalled in various screens which are defined
based on the data displayed.
During the sterilizing cycle,
the application delivers
comprehensive information
on the process progress in a form
of progress bar and messages.
The software can be also used
for registering and evidencing
operation of an entire central
sterilizing plant. Versatility
of the application consist not
only in the possibility to connect
sterilizers, but also other
equipment, such as washing units,
disinfectors, and rotary welders.
The DOKUMENTATOR application
allows also data transfer in other
formats (such as xls – MS Excel
format), and provides opportunity
to analyse the stored data, making
lists, reports and printouts.
TECHNICAL SPECIFICATIONS
Type
Total sterilizing
chamber capacity
Usable space
dimensions
(width, height,
length)
Load capacity of the
chamber with standard
charge units
(300x300x600)
Overall dimensions
width
height
depth
Weight
PA version*
WPA version
Sterilizer weight
during water test
PA version
WPA version
Sterilization temp.
dm3
mm
STE
mm
kg
AS 666
AS 669
AS 6612
AS 6618
334
459
605
897
662x662x950
662x662x1250
662x662x1850
4
6
8
12
1170
1900
970
780
850
1170
1900
1225
950
1050
1170
1900
1525
1150
1250
1170
1900
2125
1750
–
662x662x694
1130
1400
1750
1200
1500
1850
°C
programmable within the range 110÷138
Supplying media
Water steam – supply pressure 2,5 bar
max consumption
kg/min
0,9
1,2
1,5
avg. consumption
kg/cykl
8,5
11
13
Water – condenser and vacuum pump supply – supply pressure 1÷6 bar
25
25
25
max consumption
dm3/min
avg. consumption
dm3/cykl
100
100
150
Water – steam generator supply – supply pressure 1÷6 bar – WPA version
5
5
5
max consumption
dm3/min
3
avg. consumption
dm /cykl
10
13
15
Compressed air – supply pressure 5÷8 bar
Capacity
Ndm3/h
600
600
600
Power rating – 3N~ 400V; 50Hz
Installed power
PA version
2,5
2,5
2,5
kW
WPA version
36+2,5
36+2,5
36+2,5
Heat emission
PA version
3,2
3,8
4,4
kW
WPA version
3,6
4,2
4,8
Sound
dB (A)
<65
power level
Max
allowable chamber
bar
2,8
pressure
Max allowable
°C
142
chamber temperature
kg
* PA - one-sided with no steam generator; WPA - double-ended with built-in steam generator
2820
–
1,8
16
25
200
–
–
600
2,5
–
5,7
–
SMS has been present in the medical equipment market for several dozen years.
The company’s core activity comprises
manufacturing steam sterilizers. In addition
the offer includes complex solutions and
supplies of disinfecting and sterilizing
equipment together with necessary
accessories, such as: special furniture,
water treatment systems, steam generators,
welders for sterilizing packages and
consumables for sterilization.
Equipment offered by SMS meets all requirements of valid Polish and European
standards. The sterilizers have necessary certificates and approvals, such as the
Certificate of Compliance with Medical Directive 93/42/EEC and the Certificate
of Compliance with the Pressure Equipment Directive 97/23/EC. Also the EN 285 and
EN 554 standards are conformed with.
The quality management system in accordance with ISO 9001:2000, implemented
and maintained in the company, ensures highest quality of performance at any stage
of activity: design, manufacturing, assembly and service.
Consulting services
SMS offers consulting in the scope of selection of equipment to suit clients’s individual
needs. Also assistance is available in designing complete central sterilizing plants or
sterilizing departments in operation blocks, hospital departments, milk kitchens etc.
8 Konstruktorska Str., 02-673 Warsaw, Poland
tel. +48 22 843 27 61, fax +48 22 843 28 81
e-mail: sms@sms.com.pl, www.sms.com.pl