Astell AMB220 User manual

MANUAL NUMBER: IM_20_80_01J
INSTRUCTION MANUAL
AMB220 |AMB230 |AMB240 | AMB420 | AMB430 | AMB440
AMA240 | AMA440
AUTOCLAVES & STERILIZERS

2Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
Introduction 3
Document issues and details 4
Safety and graphical symbols 5
Safety instructions 6
Legal and safety regulations and requirements 7
Risk assessment - health & safety 8
Climatic conditions 9
Weight and dimensions 9
Electrical specifications 9
Internal system fuses & trips 9
Safety valve test 10
Security passwords 11
Quick reference operation guide 12
Overview 13
System controls 14
Initial power up 15
Door controls 16
Selecting a program 17
Starting a cycle 18
Starting cycle (delayed start off) 19
Action after power failure 19
Security access & passwords 21
Entering passwords 22
To change your password 22
To change / add user name 22
Using CFR user logging and audit functions 24
Alarms 28
Manually jump stages 28
Stage jump & security levels 28
Safety interlocks 29
Closure system interlocks. 30
Heating system 30
Temperature control system 30
Sterilize timing systems 30
Cooling 30
Filling with water 32
Water level - visual check 32
Water quality 32
Cycle details & displays 33
Freesteam stage 33
Heat to sterilise 34
Stabilization 34
Sterilising 34
Cooling 34
Drying 34
Set clock - time and date 35
Sterilisation cycles notes and advice 36
Load sensed timing 39
Optional printers 40
Maintainance and cleaning 43
Steriliser cleaning 43
Chamber cleaning 43
Cabinet and general cleaning 43
Safety and door interlocks 44
Manual unlocking 45
Maintainance 47
Comissioning and program setting 49
Frequently asked questions 50
Sterilisation parameters 51
Spare parts and service 52
Certification 53
Pressure-temperature correlation 54
General flow diagram schematics 56
Notes space 60
TABLE OF CONTENTS

3Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
INTRODUCTION
The ”Swiftlock secure touch colour+” sterilizer models
are modern, functional benchtop or floor standing
autoclaves/sterilizers designed with ease of use in mind.
They use a rapid-action “new Swiftlock” closure system
to give easy and rapid opening of the chamber, together
with a 5 or 10 program touchscreen operated control
system, to facilitate a variety of uses.
WARNING IEC61010
In accordance with IEC61010
The safety features and protection for the operator
in this equipment are only designed to operate when
the equipment is used in the way described in these
instructions. If used in any way not specified such
protection may be impaired.
GENERAL OPERATION AND LOG-BOOK
Although the safety record of laboratory sterilisers is
good, remember at all times that they store considerable
potential energy, and should be treated with respect and
care. If correctly used and cared for, your steriliser will give
you long and safe service.
Pay attention to regular maintenance. Never force the
locking mechanism, or operate the machine with any
leaks, or incorrectly operating parts.
Report any defects to your supervisor. If deterioration
or defects are noticed, record them in a log book and
contact our Service Department. Record also the results
of annual and periodic inspections. Every 4 to 6 weeks is
recommended. Check the logbook before you start using
the machine, as someone else may have recorded a fault
of which you are not aware.
CUSTOMER SURVEY
Thank you for purchasing your equipment from Astell
Scientific. We are committed to improving our customer
experience through a continuous improvement
monitoring program, and would appreciate your
assistance in providing feedback of your experience.
We have created a short survey containing eight questions
which will take less than 5 minutes to complete – you can
find it here: http://www.astell.com/survey
Thank you for your assistance.
For your convenience, please use your mobile phone to
scan the QR code on the right.

4Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
For the associated CONTROL SYSTEM PROGRAMMING MANUAL: PM_20_80_01f
Date Issue and Edition Filename Details of changes
and revisions
08/2016 01a IM_20_80_01a Original issue
01/2017 01b IM_20_80_01b Survey request added
09/2017 01c IM_20_80_01c Pipework Schematic
Updated
01/2018 01d IM_20_80_01d SGS and UKAS logos
removed
06/2018 01e IM_20_80_01e Correct part numbers in
Parts List
07/2018 01f IM_20_80_01f Add United Kingdom to
Astell address
10/2018 01g IM_20_80_01g Add Customer Survey QR
code
10/2018 01h IM_20_80_01h Removed MDD reference
01/2019 01i IM_20_80_01i Drying option addition
04/2019 01j IM_20_80_01j Add CFR option instructions
DOCUMENT ISSUES AND DETAILS

5Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
SAFETY AND GRAPHICAL SYMBOLS
The following “ISO” symbols are used in this manual and on the machine
Protective earth (ground)
To identify any terminal which is intended for connection to an external
conductor for protection against electric shock in case of a fault, or the
terminal of a protective earth (ground) electrode.
Dangerous voltage
To indicate hazards arising from dangerous voltages. Internal voltages
are the same range of values as the mains supply to which the unit is
connected.
Hot surface
To indicate that the marked item can be hot and should not be touched
without taking care.
Warning/caution
An appropriate safety instruction should be followed, or caution, a
potential hazard exists.
Heavy
This product is heavy and reference should be made to the safety
instructions for provisions of lifting and moving
Refer to manual
Refer to the relevant instructions detailed within this manual.
Service action required
The relevant problem cannot be solved by the user. Attention is required
by an engineer suitably qualified with this equipment.

6Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
SAFETY INSTRUCTIONS
The safety records of laboratory sterilisers are good,
but remember at all times that they should be treated
with respect and care.
Electrical and thermal fire risk
This equipment contains electrical circuitry which carries
sufficient energy to cause and sustain a fire. Active
system thermal energy-input protection and over-
current protection is provided on all appropriate circuits.
Safety-valve prevents excessive pressure build-up in the
chamber. The equipment is protected from overheating
by an electrical thermal cut-out sensing excessive boiler
temperature.
Temperatures due to the designed heat source(s) in
extreme fault conditions could attain 150°C internal to the
chamber/boiler.
Handling/moving
Lift at sides or rear of case, taking the load of the unit on
the base-plate. Do not lift or handle using the plastic door
cover or control panel or any other projection. Do not
drag across surfaces or the feet may be damaged.
Full details of weight and dimensions are supplied with
the machine.
Handling steriliser loads
Due care should be exercised when handling loads and
moving them in and out of the steriliser. The wide range
of loads that are used means that these instructions do
not cover instruction for manual handling of loads.
The users and supervisors of the machine must ensure
that all local regulations for health and safety and manual
lifting are complied with in the use of this machine.
Written instructions concerning these matters and general
laboratory practice for using the machine should be
drawn up and all users should be trained in the safe use of
the machine.
Damage disclaimer
The manufacturers or their agents cannot accept
responsibility for damage or consequential damage that
may be caused by waste heat, fire, exhaust gases, water,
steam, or steam condensate should the machine be
operated other than in accordance with the instructions in
the provided operating manuals.
This disclaimer also applies if the piping or internal
system of the machine is modified, misused, blocked or
obstructed, or by use of non-approved alternative spare
parts.
This disclaimer also applies if the system installation
does not comply with the requirements of the installation
drawings and other specifications that may be stated by
the manufacturers.
GENERAL INFORMATION
Incoming Inspection
After receiving your Astell Autoclave, carefully inspect
the outside of the shipping box for signs of damage. If
any damage to the container is found, note the location
with respect to the autoclave and check that area of the
autoclave carefully once it is fully unpacked. Observe
packing method and retain packing materials until
the unit has been inspected. Mechanical inspection
involves checking for signs of physical damage such as:
scratched panel surfaces, broken handles, etc. If any
damage is found, contact your dealer as soon as possible
so that they can file a claim with the shipping carrier
and also notify Astell Scientific. All Astell products are
carefully inspected prior to shipment and all reasonable
precautions are taken in preparing them for shipment to
assure safe arrival at their destination.
Note: Lifting and carrying should always be done by two
people.
Warranty
Astell warrantees, from the date of purchase, all new
autoclaves for a period of one year, covering both parts
and labour. This one year warranty covers defects in
materials and workmanship on every part in the autoclave
except door gaskets and filters (they are considered wear
items). Astell warrantees the chamber for a period of ten
(10) years against defects in materials and workmanship.
This warranty does not include installation or operator
instruction which are covered in this manual for your
convenience or which can be provided by your dealer.
This warranty does not apply to any instrument that has
been subjected to improper use or accident, nor shall it
extend to autoclaves that have been repaired or altered
outside the factory without prior authorization from Astell.
The warranty also does not include routine cleaning or
preventive maintenance, to be performed according to
instructions in this manual. Astell’s obligation is limited to
the repair or replacement of parts for the autoclave. No
other warranties or obligations are expressed or implied.
The Autoclave should only be used in a manner
described in this manual!
Note: If you have any questions or there are any
difficulties with this instrument and the solution is not
covered in this manual, please contact your dealer or
Astell Scientific.
Do not attempt to service this equipment yourself.

7Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
LEGAL AND SAFETY REGULATIONS AND
REQUIREMENTS
* (INTERNATIONALLY HARMONISED) standard 61010-1-1-ISSUE 3 section 5.4.101.1 and Pressure Equipment Directive. P.E.D
Pressure Equipment
Directive
(European models)
Please note that this equipment is covered by the European Pressure Equipment
Directive. This may already affect your premises and you will need to ensure that
the machine is included in any scheme covered by these regulations.
(USA models are manufactured to the European directive)
Periodic inspection and
safety valve test
The manufacturer recommends every 4 to 12 weeks carrying out the periodic
maintenance checks of the machine and the closure system (door) as explained in
this manual.
At intervals of 3-months carry out the safety valve test, as explained in this manual.
If this test is missed the screen will display a warning that the safety valve test is
overdue. To clear the warning you must carry out a safety valve test.
Log book A log-book or similar record should be kept for each steriliser.
This should record the results of
• Commissioning and calibration
• Safety valve tests
• Annual and insurance inspections
• Faults and malfunctions
• Service visits
• Other actions or incidents
Check the logbook before you start using the machine, as someone else may have
recorded a problem or fault of which you are not aware.
Responsible person This equipment stores considerable thermal energy and could be hazardous if not
used and maintained correctly.
European models:
European regulations* require that a responsible person should be appointed who
will be in charge of the maintenance, safety, and operation of the steriliser and for
user training.
United States and Canada:
All local requirements for pressure vessels must be complied with.
Training It is the duty of the responsible person to ensure that all persons who operator
or maintain the equipment have been trained in the correct and safe operation
of the steriliser, including emergency procedures and what to do in the case of
malfunction.
The responsible person must ensure that all persons carrying out maintenance on
the working parts of the steriliser are fully familiar with operation of the machine
and suitably qualified for work on pressurised steam and safety related systems.
This training should be regularly repeated and formally recorded in an appropriate
training schedule and records of attendance of persons at training sessions should
be included.
Training should be organized and monitored so that evidence of understanding is
demonstrated by the trainee.

8Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
RISK ASSESSMENT – HEALTH AND SAFETY
Intended use of
equipment
This equipment is intended solely for sterilisation and processing of biological
materials to destroy pathogens. Precise details of loads and handling methods
should be provided by the responsible body.
Technical specification This is found in the original sales-documentation and/or machine drawings. Some
information is also in the manuals that apply to this machine.
Name and address
of manufacturer for
technical assistance
Please see the front pages of this manual, or consult your supplying agent if this
was not supplied direct from the manufacturer.
Risk mitigation The design of the machine has reduced the risk to the user to as low as possible.
The safety interlocks built into the machine are designed not open to defeat
or misuse. The primary risks associated with use of this equipment concern the
operator handling of loads when loading and unloading the machine and use
the unit only as a steriliser for the specified loads. The assessment should include
instructions on and include the fact that the steriliser uses heat, and consequently
hot surfaces and hot water is present. The machine design protects the normal
user from contact with dangerously hot surfaces when the steriliser is operating.
However, depending upon cycle or method of use, when the door is open, some
chamber parts may be hot and could be hazardous to touch.
Astell cannot advise on, specify or be responsible for aspects of safety regarding
the load handling process or day to day laboratory procedures. The responsible
person should perform this part of the assessment based upon safe laboratory
working practices.
Accessories
and spare parts
This equipment as standard does not require any specific accessories in order to
operate without causing a hazard.
Where spare parts are required these must meet the full specification of the
manufacturer. If alternative unapproved parts are fitted to the equipment then the
safety of operation may be affected and Astell cannot be held responsible for injury
or consequential damage that may result from the use of these parts.
To maintain your initial warranty, safety and performance only fit spare parts
supplied by Astell Scientific Ltd.
This equipment stores considerable thermal energy and uses electrical power at hazardous voltages and currents.
Steam sterilisers can be hazardous if not used and maintained correctly.
European regulations on health and safety require that a risk assessment should be carried out by the responsible body
and any findings should be incorporated in the training of operators and supervisors and all others using the equipment.
Where used in United States, Canada or outside Europe please ensure that your installation complies with all local
regulations that apply.

9Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
SPECIFICATION
CLIMATIC CONDITIONS
Storage conditions
Permitted temperature range -10 / +70°C
Humidity not specified but an equalising time is required-
see below.
Storage of this product in cold or damp conditions may
lead to a hazard or operating faults if the equipment
is put into service before it has dried out and achieved
equilibrium with the surroundings of the operating site. In
this case place in the area where it is intended to use the
equipment, before connecting the power supply allow at
least 48 hours reaching humidity equilibrium. If there is
no evidence of condensation on the equipment you may
proceed with installation.
Operating conditions
Permitted temperature range 0-40°C
Permitted humidity mustn’t exceed 75% mean non-
condensing.
Do not site the equipment in an area where there are
significant quantities of dust, which will gather on the
electronics and cause malfunction.
Do not site the equipment in an area where spray or
fumes from other equipment may enter the cabinet or
cooling vents.
Steamy environment- WARNING
If a large volume of steam is discharged into a confined
operating area the resulting condensation may cause
a hazard or operating faults or permanent damage to
the controller. This would not be caused by the small
amount of steam generated in normal use when the
machine is operated or the safety valve tested as in these
instructions. It could be caused by a continuous leak of
steam from a supply pipe, a badly maintained and failed
safety valve, the user must ensure that all appropriate
maintenance is performed to avoid such large steam leaks
which are outside the scope of these instructions and
outside the machine warranty.
WEIGHT AND DIMENSIONS
All physical specifications, including weight, dimensions,
etc., are given in the installation drawing supplied with the
machine.
ELECTRICAL SPECIFICATIONS
These instructions apply to a wide range of different
machine model numbers and sizes which may have
different electrical power ratings and specifications.
(Some models may be bespoke and have non-standard
power requirements).
Installation
Information is provided for guidance purposes in the
programming and installation manual.
Electrical rating plate
The full electrical specifications for the machine are given
on the electrical rating plate.
This is attached to the machine at the rear of the cabinet.
Services – specifications
There are no air water or steam services required for this
machine as standard - please refer to the programming
and installation manual.
INTERNAL SYSTEM FUSES and TRIPS
The information here is given to advise the user what to
do if fuse failure occurs.
Fuse specifications
Fuse failure or tripping indicates a technical problem
which should be solved before the fuse is replaced or the
MCB trip reset.
If fuse failure happens consult manufacturer or your agent
before replacing fuses.
Please refer to the appropriate programming and
installation manual for your machine.
Specifications, alternatives and variations
Any technical specifications given on the rating plate or installation drawing overrules any
information or suggested values or parameters that may be given as an example in this
and associated manuals.

10 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
SAFETY VALVE TESTING
Machine contains a safety valve!
To comply with typical safety regulations this must be kept
in a serviceable condition and must be regularly tested.
Testing period
Test periods depend upon local regulations.
Astell Scientific advise that the safety valve should be
tested in every month to meet the requirements of
most countries for steam safety valve testing. It can be
changed.
All models have an automatic safety-test warning system
and monitor the date of the last safety test that was
completed.
At power-on and cycle start the system checks the
current date and shows a warning after the set period has
elapsed.
Safety valve test program
A special safety test program is provided to carry out a
valve test. This can be accessed from the site engineer
level.
Safety valve location
The safety valves are fitted on the chamber. These are
mounted inside the cabinet and normally discharge
downwards to the floor (unless specified otherwise at
time of order.) They are in a position to allow access for
servicing.
To cancel warning
To cancel run a safety test cycle.
(You cannot cancel it in any other way.)
SAFETY VALVE TEST QUICK REFERENCE
• Touch
• Select “SETTINGS MENU”
• Select “EDIT MACHINE SETTING”
• Select “SAFETY TEST”
• Select “SITE ENGINEER”
• Enter “333333”
• Touch
three times to return main menu.
• Close and lock door
• Touch to select cycle.
• Select “safety test cycle”
• Touch to start cycle
• Test cycle is now running
• Heating to set point 1. Press
• Heating to set point 2. Press
Continuously observe the pressure from this point. The
operating pressure has to be between 3.45 and 3.68 bar
(absolute).
After the valve operates touch to terminate the
test and advance machine into cooling.
Leave until complete and then open the door.
WARNING
The machine should be monitored continuously
until the safety-valve test is completed. When
the valve operates there will be a quantity
of steam released with associated noise. This
itself should not be hazardous but may surprise
or alarm anyone nearby.
WARNING
If the safety valve does not operate at the
stated pressure it must be checked and tested
by a qualified engineer.

11 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
OPERATING
INSTRUCTIONS
The following sections provide operating instructions in
both a fully detailed version and short-form which can be
copied and fixed to the wall near to the steriliser.
Full details of the program entry procedure and further
technical details are provided in a separate programming
manual.
Other options such as the RS232 communications option
are detailed in separate instruction manuals.
Information on approved use
This equipment is not designed for use other than as a
medical steam steriliser for use within the temperature
and pressure ratings of the chamber design. It is intended
for use by a health care provider to sterilise medical
products by means of pressurized steam.
Never use the autoclave to sterilize corrosive products,
such as: acids, bases and phenols, volatile compounds
or solutions such as ethanol, methanol, chloroform or
radioactive substances.
Any alternative use or method of operation not covered
and specified within this and associated programming
manuals is specifically excluded and may be hazardous.
The manufacturer does not approve such alternative use
and under no circumstances will the manufacturer or his
agents accept responsibility for loss, damage, or injury,
consequential or otherwise, as a result of such alternative
use.
The manufacturer reserves the right in certain cases,
to reassess and/or amend the design or specification,
and provide individual written instructions detailing an
alternative use that is considered acceptable.
Astell Scientific and approved agents are able to offer
advice and assistance in setting up and commissioning
this steriliser. Please consult Astell Scientific or an
approved agent if necessary.
SECURITY PASSWORDS
The system protects from unauthorised use by security
password codes.
Factory set numbers
• OPERATOR 111111
• SUPERVISOR 222222
• SITE ENGINEER 333333
If in doubt consult your supplier.
Passwords for Astell engineer access and above are
available to suitably approved engineers on request.
Astell advises to change passwords after installation.

12 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
BENCHTOP STERILISER
QUICK REFERENCE
OPERATION GUIDE
1. Check that display power is on.
2. Press [door] button. The bolt will unlock.
3. Turn handle and open door.
4. Check if the gasket is correctly seated and inspect for
damage.
5. If display shows “tank water level low”. Add water to
water tank until message disappears.
6. Load steriliser.
If the machine is fitted with load sense timing place load
sensing probe in position in centre of load if the cycle
requires use of load sensing.
If cycle does not require use of the load sensing probe,
place the probe safely to one side of the load.
7. Close and rotate handle to lock.
8. Select cycle.
9. Press [start] button, cycle will begin.
10. When display shows “complete” at end of cycle,
press [door].
11. Door unlocks, rotate handle and open door.
12. Open door fully and unload chamber.
13. If [door] button is pressed and door is not opened
it will cancel after 10 seconds, and will re-lock. After
this, to open, just press [door] button again.
Notes: If the door is closed by accident, press [door] key
to open.
If handle is rotated to locked position with door open,
press [door] button and return handle to “unlocked”
position.
[door]
[start]
AFTER USE
After unloading steriliser always leave cover
slightly open when not in use to avoid
compressing gasket.
CLEANING
Clean chamber regularly, as water
contaminated with spilt load contents will
cause failure and may burn out heaters or
block pipework, valves or drains.
For detailed cleaning instructions please see
page 38.

13 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
OVERVIEW
The C70 controller provides an LCD full colour display
with a led backlight system.
The front of the display is covered by a glass touchscreen
which is sensitive to the touch of a finger or blunt stylus.
The system is able to detect the position on the screen
that has been touched and can interpret this as if it was a
“button-press”.
The controller system is arranged to show a number of
different screen layouts of information, together with the
required “buttons” (shown on the screen as rectangles
with bevelled corners)
When a screen shows a button, then a press on the button
will select that item.
Screen brightness
The Screen contrast is adjustable.
There is a +/- brightness adjustment available in the main
menu screen system info. (See Programming manual).
If the screen has lines or is smudged please advise your
service engineer.
Display screen damage
As with computer screens generally, this screen is made
of thin glass layers. These are easily damaged if they are
impacted by a heavy object or excess pressure is applied
to the glass. In this case the glass will crack and the
display will have to be replaced.
Note that damage will not normally be covered within the
warranty.
Typical view of controller in standby mode

14 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
SYSTEM CONTROLS
Power Isolator Switch
Turns on AC Mains Power to the system.
This is fitted to the Main Electrical Cabinet.
Marked 0/1.
The “1” position is “ON”.
It illuminates when “ON” when mains AC power is
supplied to the machine.
Cool lock thermostat(s)
There is always at least 1, and optionally up to 3 and they
are sited inside the cabinet panel-work. These sense
chamber temperature and used to restrict opening with
hot fluid loads.
See “safety interlocks” section.
INSTRUMENTATION
These readouts are only displayed when necessary in the
cycle.
Chamber temperature readout
Accuracy better than ± 1.0 °C
Load sensing temperature readout
Accuracy better than ± 1.0 °C
Chamber pressure display
Accuracy Better than ± 0.04 Bar
Chamber pressure gauge
Dial Bourdon pressure gauge at front of machine.
(Accuracy Better than ±5%)
Timing
Various timing functions are displayed on the screen in
MM:SS.
Instrumentation and system checks
In Standby/Ready state - with door closed- the system
displays the current measured variables and the state of
switches, interlocks and services. Any failures are reported
as ALARM conditions.
Alarms
In the event of an instrumentation or sensor problem the
monitor system reports this via the ALARM system.
The ALARM icon flashes RED.
To clear the alarm
Touch the ALARM icon button.
This displays a chronological list of alarms which must be
acknowledged by the user.
Over temperature thermostat
This is sited behind the cabinet.
This takes over control of the heater in the event of water
loss or overheating. It resets automatically when the
temperature falls.
Overheat safety cut-out.
This is fixed (not user adjustable).
This is sited inside the cabinet and cuts out the heater in
the event of excessive temperature rise (typically >150C).
It is only resettable by manual operation when the covers
have been removed.

15 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
INITIAL POWER UP
Make sure the power supply is turned on.
During power-up, the screen shows the booting process
as the software loads, with a message “booting”, then the
Astell logo is displayed.
The system then goes to the operating screen.
BUTTONS AND DISPLAYS
Below are a selection of the buttons and displays that you
will see on the touchscreen in normal use. Full details -
see later in this manual.
Door open button
Press to unlock door
Alarm button
Display all system alarms.
Note: This button flashes red if an alarm is activated. After
the alarm icon has been touched, the Password is used to
cancel alarms.
Password screen
Allows the supervisor to enter their password.
Menu button
Takes you to the next menu.
Return button
Return from selected screens back to the start screen.
Up and down buttons
Move up and down through lists e.g. to select a cycle.
Cycle counter
This counter is displayed on various screens and indicates
how many cycles the autoclave has run. This is not re-
settable.
Cycle Time
Time into current cycle
Stage Time - Elapsed time in Stage
The temperature and pressure
Channels selected are displayed:
Date and Time
Top right corner of the screen.
Alphanumeric keyboard

16 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
DOOR CONTROLS
OPEN
Touch the “closed door” button on the display screen to
unlock the door. Then rotate the door handle clockwise to
disengage the door bolts and open the door.
The screen icon will change to Door open:
If “closed door” button does not show on screen then the
system will not allow you to open the door.
This is not possible or unsafe at this stage
The door will open only if the safety conditions are all
satisfied and no alarms are present.
HANDLE LOCKED WITH DOOR OPEN
If the door is open and you move the handle accidentally
to the locked position it will lock in that position.
To restore normal operation
Press the [DOOR] button to unlock
Then rotate the handle to the unlocked position.
CLOSE
Close the door
The icon will change to “Door closed”
Then rotate the door handle anti-clockwise to engage the
door bolts and secure the door.
Note: Do not lean on the handle or hang anything over
the handle as this will cause the bolt to stick and will cause
early failure of the mechanism.

17 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
SELECTING A PROGRAM
(Note - temperatures and times etc. will probably be
different to the examples shown here).
Press “SELECT CYCLE” button
This will take you to a screen where you can select any
one of the available programs.
Then touch the name of the selected cycle.
The display changes to show that a cycle has been
selected and loaded
Cycle Selected
Changes colour to show cycle selected.
Change cycle
If you wish to select another Cycle press
the “FOLDER” button, then select a
different cycle.
WARNING!
The next press on the cycle button will
start the cycle!
IMPORTANT
The names, numbers and types of program
cycles available depend on the machine
specification, and what has been set up on the
machine.
This manual shows examples only and cycle
displays will not be exactly the same as shown
your machine.

18 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
STARTING A CYCLE
The chamber door must be closed and locked!
Select the chosen cycle (as above).
Press button to start cycle.
Delayed start option
If delayed start is not selected in settings the cycle starts
immediately (see next page).
For each of the time or date figures you wish to change
touch the figure on the screen e.g. to change the day:
Type the value you want using the numeric keys, then
press . When you are happy with the date and time
shown press the clock button to save the changes.
When the elapsed time is up, the system will go directly
to start.
Delayed start safety
If anything happens that could affect the safety of the unit,
including the case of power failure, it will exit the delay
start countdown automatically.
Manual override
Immediate manual start
• Press the Cycle Start button
Cancel delayed start
• Press
• Select
• Login with password
• Select with up and down arrows
• Press Continue
• Answer the “are you sure” question
• To start select stage
• To cancel select cooling

19 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
STARTING CYCLE (DELAYED START OFF)
The chamber door must be closed and locked!
• Select the chosen cycle, as above
• Press button to start cycle
• The system starts the cycle process
ACTION AFTER POWER FAILURE
If the mains power is cut or turned off when not running
(in the standby stage) when restored the system behaves
as above for power on.
If the power cut occurs during a cycle then the action
when power returns depends on the setting of “power fail
mode” in the edit machine settings menu.
If set to “safe” the system will go to the standby stage
(it may need to cool first) this will cause an alarm state.
Cancel the alarm (refer to “alarms” section) you should
then be able to restart the sterilize cycle. In the case of
media cycles the media will probably be damaged and
unsuitable for re-sterilization. For all loads involving
pathogens, the load must be sterilized again before
opening.
If set to “continue” then the system will try to return to
the failed stage. If something has been changed in the off
period this will cause an alarm state, and a failed cycle.
Cancel the alarm (refer to alarms section) you should
then be able to restart the sterilize cycle. In the case of
interrupted media cycles the media will probably be
damaged. For all loads involving pathogens, the load
must be sterilized again before opening.

20 Astell Autoclaves/Sterilisers – AMB220 | AMB230 | AMB240 | AMB420 | AMB430 | AMB440 | AMA240 | AMA440
CYCLE COMPLETE - PASSED
If the cycle has completed correctly and no faults occurred
the final stage is:
“CYCLE COMPLETE - PASSED”
Press the “DOOR” button to unlock the door.
You can remove and use the sterilized load.
CYCLE COMPLETE - FAILED
If the cycle has failed for some reason the final stage is
“cycle complete - failed”. No door button.
The sterilise cycle is over. Load may not be sterile. You will
need to sort out the reason for the cycle failure.
You will then and be able to press the “DOOR” button to
open the door.
If the sterilize stage has been set to “sterilize retry” then
then you cannot open the door but you can restart the
cycle.
Is the load safe?
After a failed cycle, if you can open the door, you can
carefully unload the chamber but a decision by a suitably
qualified person and microbiological assessment is
needed before use of the load.
You will need to judge whether the load has undergone
sufficient processing to be sterilised enough to be safe or
satisfactory to use.
Sterilise the load again?
In the sterilize stage settings you can choose the action
• Sterilize retry: Do not open door - sterilize again
• Safe stage: Safe to open door
Some loads such as media preparation will normally
be safe after a failed cycle and might even be useable,
depending on what went wrong.
If set to “load is safe” then you must log in with the
password and clear the alarm that caused the failure but
you can then open the door and unload.
Is it unsafe to open the door?
If the load would have pathogens present due to the
sterilization failure then handling it would be dangerous.
If set to “sterilize retry” then you will need to clear the
alarm. Then the only choice you have is to start the cycle
again. You cannot open the door.
Press the “ALARMS” button - go to the alarms
page so you can investigate, then correct and
reset the alarm. You will need the supervisor level
password or higher.