Tuttnauer 2540 MKA Manual

OPERATION
&
MAINTENANCE
MANUAL
Semi-Automatic Table-Top Autoclaves
model 2540 MKA
Cat. No. MAN205-0312002EN Rev. A
Tuttnauer USA Inc 25 Power Dr. Hauppauge NY. 11778 [phone] www.tuttnauerusa.com

Web site: http//www.tuttnauer.com

Page 1 of 45 Pages
TABLE OF CONTENTS
PARAGRAPH PAGE NO.
1 GENERAL. ...........................................................................................................4
1.1 Incoming Inspection .................................................................................4
1.2 Warranty....................................................................................................4
1.3 Warranty Statement...................................................................................4
2 SAFETY INSTRUCTIONS..................................................................................5
3 TECHNICAL DATA ............................................................................................6
3.1 Introduction...............................................................................................6
3.2 Stand –by Heating Mode..........................................................................6
3.3 Construction..............................................................................................7
3.4 Operating Condition..................................................................................7
3.5 Standards...................................................................................................7
3.6 Storage conditions.................................................................................7
3.7 Utilities.......................................................................................................7
3.8 Waste Water Disposal................................................................................8
3.9 Environment Emission Information........................................................9
3.10 Technical Specifications ...........................................................................9
3.11 Electrical Data...........................................................................................9
3.12 Symbol Description....................................................................................9
4 DESCRIPTION OF COMPONENTS...............................................................14
4.1 Control Panel...........................................................................................14
4.2 Other Components............................................................................... 15
5 INSTALLATION INSTRUCTIONS..................................................................16
5.1 Electrical..................................................................................................16
5.2 Setup.........................................................................................................16
5.3 Lifting and carrying ............................................................................17
6 WATER QUALITY.............................................................................................18
7 PREPARATION BEFORE STERILIZATION.................................................19
8 OPERATION......................................................................................................23
8.1 Loading and unloading the Device ........................................................23
8.2 Fill the Water Reservoir..........................................................................23
8.3 Operation.................................................................................................24
9 SERVICE AND MAINTENANCE INSTRUCTIONS......................................28
9.1 Preventive and Scheduled Maintenance ............................................. 28
9.2 Draining the Reservoir............................................................................29
9.3 Cleaning Air Jet ......................................................................................30
9.4 Replacing the Door Gasket.....................................................................31
9.5 Checking the Safety Valve......................................................................32
9.6 Replacing the Cartridge Fuse.................................................................33
9.7 Cleaning water outlet strainer................................................................34
9.8 Replacing the Air Filter..........................................................................35

Page 2 of 45 Pages
10 CLEANING TABLE TOP AUTOCLAVES WITH CHAMBER BRITE™.. 36
11 TROUBLESHOOTING......................................................................................38
12 CONVERSION TABLE FOR SATURATED STEAM ....................................45
13 LIST OF ACCESSORIES..................................................................................45

Page 3 of 45 Pages
TABLE OF CONTENTS (Cont.)
DRAWINGS PAGE NO.
Front View...................................................................................................................11
Rear View ....................................................................................................................12
Reservoir......................................................................................................................13
Electrical Bracket........................................................................................................13
Tray Handle - CMT240-0002.....................................................................................44
Pouch Rack - ACS215-0008.......................................................................................44
Tray - TRY240-0006....................................................................................................44
Tray Holder - TRH254-0036 ......................................................................................44

Page 4 of 45 Pages
1GENERAL
Read the Operating Instructions carefully, before beginning any operation on the
autoclave!
1.1 Incoming Inspection
Upon receiving your Tuttnauer Autoclave carefully inspect the outside of the
shipping carton for signs of damage. If any damage to the carton 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
knobs, 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 Tuttnauer.
All Tuttnauer 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.
1.2 Warranty
We certify that this instrument is guaranteed to be free from defects in material
and workmanship for one year against faulty components and assembly with
the exception of glassware, lamps and heaters.
The warranty does not include and does not replace routine treatment and
preventive maintenance to be performed according to instructions inparagraph
8.1 (Preventive and Scheduled Maintenance).
Our obligation is limited to replacing the instrument or parts, after our
examination, if within one year after the date of shipment they prove to be
defective. This warranty does not apply to any instrument that has been
subjected to misuse, neglect, accident or improper installation or application,
nor shall it extend to products that have been repaired or altered by an
unauthorized person.
Do not used the autoclave in a manner not described in this manual!
1.3 Warranty Statement
The warranty registration must be completed and returned to our service
department; within fourteen (14) days of purchase or the warranty will be void.
Our Technical Service Dept can be reached at:
Tuttnauer USA 800-624-5836 Ext. 433
Note:
If there is any difficulty with this instrument, and the solution is not covered in
this manual, contact us first. Do not attempt to service this instrument yourself.
Describe the difficulty as clearly as possible so we may be able to diagnose the
problem and provide a prompt solution.
If replacement parts are needed, stipulate the model and serial number of the
machine.
No products will be accepted for repair without proper authorization from us.
All transportation charges must be paid both ways by the owner. This warranty
will be void if the unit is not purchased from an authorized full service
Tuttnauer dealer.

Page 5 of 45 Pages
2SAFETY INSTRUCTIONS
The autoclave has unique characteristics. Please read and understand the
operation instructions before first operation of the autoclave. The following
issues may require instructions guidance provided by the manufacturer: how to
operate the autoclave, the door safety mechanism, the dangers involved in
circumventing safety means, how to ensure that the door is closed, and how to
select a correct sterilization program.
Autoclave maintenance is crucial for the correct and efficient function of the
device. We enclose a log booklet that includes maintenance recommendations,
with every device.
1. Make sure that you know where the main power switch is.
2. Never use the autoclave to sterilize corrosive products, such as: acids,
bases and phenols, volatile compounds or solutions such ethanol,
methanol or chloroform nor radioactive substances.
3. All autoclave users must receive training in proper usage from an
experienced employee. Every new employee must undergo a training
period under an experienced employee.
4. A written procedure must be established for autoclave operation,
including: daily safety tests, seal inspection and door hinge inspection,
smooth action of the closing mechanism, chamber cleaning, prevention of
clogging and preservation from corrosion, what is permitted and what is
prohibited for sterilization and choosing a sterilization program.
5. Before use, check inside the autoclave chamber to ensure that no items
have been left from the previous cycle.
6. Load trays in such away as to allow steam to move freely among all items.
7. Do not attempt to sterilize liquids since this autoclave is not intended to
sterilize liquids.
8. When sterilizing plastic materials, make sure that the item can withstand
sterilization temperature. Plastic that melts in the chamber is liable to
cause a great deal of damage.
9. On closing the device door, make sure it is properly locked before
activating.
10. Verify once again that you have chosen the appropriate sterilization
program.
11. Before withdrawing trays, wear heat resistant gloves.
12. Before opening the door, verify that there is no pressure in the chamber
(chamber pressure gauge is located on the autoclave's front panel).
13. Open the door slowly to allow steam to escape and wait 5 minutes before
you remove the load.
14. Once a month, ensure that the safety valves are functioning, and once
annually a certified tester must conduct pressure chamber safety tests.
15. Once annually, or more frequently, effective tests must be performed, i.e.,
calibration and validation.
16. Examine the condition of assemblies on a regular basis. Make sure there
are no leaks, breaks, blockages, whistles or strange noises.
17. It is required to conduct maintenance operations as instructed.
18. Immediately notify the person in charge of any deviation or risk for the
proper function of the device.

Page 6 of 45 Pages
3TECHNICAL DATA
3.1 Introduction
This table-top autoclave is equipped with an automatic pressure control while
the sterilizationis pre-set by theoperator. Theautoclave is designed especially
to fulfill; the safe and efficient sterilization requirement in all types of general
and dental clinics, first aid rooms small laboratories, etc.
This autoclave is an electrically - heated sterilizer using steam as the
sterilizing agent.
The autoclave is an easy-to-use device following the instructions in the
operator's manual.
The operator can select the sterilization temperature from within a range of
121ºC (250ºF) or 134ºC (273ºF). as well as performing a drying operation
without sterilization.
This manual is intended for the user and gives the user a general understanding
of the instrument and the best ways to operate and take care of it in order to
obtain optimum effective results.
After reading this manual, operating the autoclave will be easy. However
since this instrument is built with high technology sensitive components, no
attempt should be made by the user or any other unauthorized person to repair
or recalibrate it.
Only technical personnel having proper qualifications and holding
technical documentation (including a technician manual) and adequate
information are authorized to service the apparatus.
3.1.1 Safety features
The safety features include a double locking door mechanism
(door tightening bolt and locking bellows), a mechanical pressure
relief valve, over temperature thermostats and a double pole circuit
breaker.
Pressure Door Lock System (Door Bellow)
The Door Bellows is a safety device that prevents the door from
opening when the chamber is pressurized.
The system utilizes the buildup of pressure in the chamber to
expand a flexible Silicon-rubber bellows. The bellows then pushes
a metal pin into a grove on the tightening bolt of the Door Closing
Device.
This prevents the operator from opening the door when there is
pressure in the chamber. When the steam is released, this bellow
returns to its original position, drawing the pin with it and
releasing the tightening bolt.
3.2 Stand –by Heating Mode
In normal operation conditions, the autoclave enters "stand-by" mode between
cycles, i.e. the heating elements work on reduced power in order to maintain
a warm chamber and to reduce sterilization time. If this mode is not required,
i.e. the last cycle in the day will end after the operator leaves the premises,
this mode can be turned off by turning of the NIGHT switch.

Page 7 of 45 Pages
3.3 Construction
The main parts of the autoclave are made of materials as indicated below:
Chamber is built of stainless steel 316 L.
Door is made of stainless steel CF8.
Trays are made of stainless steel 304.
Door handle is made of hard plastic material that is safe to touch and
thermo-insulated.
Water reservoir is made of hard plastic material.
3.4 Operating Condition
This device is to be used for indoor use.
This autoclave is intended for NORMAL environment conditions as
follows:
●- Altitude up to 2000m.
●- Minimum room temperature 5ºC (41ºF).
●- Installation Category II.
●- Pollution Degree 2.
The environment shall not exceed an ambient temperature of 40ºC and a
relative humidity of 50% up to a temperature of 31ºC and a humidity of 80%.
The sterilizer should be loaded only with autoclavable material.
3.5 Standards
3.5.1 Technical standards
 A.S.M.E. Code, Section VIII div.1 for unfired pressure vessels.
 FDA Cleared.
 UL61010-1 General Safety.
 UL61010-2-041 Particular Safety for Autoclaves.
 EN 61326-1:2013 " for EMC Requirements for Electrical Equipment ".
3.5.2 Quality standards
 EN ISO 9001: Quality System
 ISO 13485: Quality systems –Medical devices.
 Medical Device Single Audit Program- companion document (MDSAP)
 FDA QSR 21 CFR part 820 & part 11
3.6 Storage conditions
The packed or unpacked autoclave shall be stored in “indoor conditions”
(protected from rain and water).
3.7 Utilities
Electrical supply: 1ph, 230V –16A,50/60 Hz
Attention:
1. The electrical net must be protected with a current leakage safety relay.
2. The electrical network must comply with local rules or regulations.
3. The autoclave must be connected to a properly grounded outlet

Page 8 of 45 Pages
3.8 Waste Water Disposal
Caution !
Waste-water may be brought into the public water piping in accordance with
the local rules or requirements. I.e. only non-hazardous liquids may be
disposed in public sewage!

Page 9 of 45 Pages
3.9 Environment Emission Information
A. The peak sound level generated by the sterilizer is « 78 / dBA with
background noise of 60 dB.
B. The total heat transmitted by the sterilizer is < 100 W/h.
3.10 Technical Specifications
Metric
US
Chamber diameter
254
10
Chamber depth
475
18.7
Volume of chamber
23 lit.
6 US gallon
Volume of mineral free water
reservoir
3.0 lit.
0.66 US gal.
Tray dimensions W X D X H
17 x 41.5 x 2 cm
6.7" x 16.3" x 0.8"
No. of trays
4
No. of standard Cassettes
(Optional)
3
Weight
38 kg
84 lb
Shipping Weight
43 kg
95 lb
Shipping Volume
0.27m3
9.5 ft3
3.11 Electrical Data
Total power model 230V
10.0A
Upper (sterilization) Heaters W
2200W
Lower (dry) Heaters W
1200W
Protection against electrical shock
Class I (IEC 60601-1)
3.12 Symbol Description
Caution! Consult accompanying documents
Caution! Hot Surface.
Caution! Hot steam.
Ground

Page 10 of 45 Pages
Dimensions
in
mm
Overall Dimensions
A
20.0
508
B
14.3
362
C
21.7
550
Maximum dimensions (door open)
D
35.8
910
E
25.8
655
Distance between supporting legs
F1-front legs
F -rear legs
F1
11.8
299
F
16.6
422
G
2.0
50
H
15.8
400

Page 11 of 45 Pages
FRONT VIEW
No.
description
No.
description
1
Front legs
11
Drying indicator light
2
Reservoir water drain valve
12
End cycle indicator light
3
Door closing device
13
Pressure gauge
4
Door microswitch
14
Operation switch
5
Autoclave cover
15
Sterilization timer
6
Water reservoir cover
16
Water pump switch
7
Water inlet indicator light
17
Sterilization + drying timer
8
Heating indicator light
18
NIGHT switch
9
Sterilization indicator light
19
Temperature selection switch
10
Exhaust indicator light

Page 12 of 45 Pages
REAR VIEW
No.
description
1
Ground connection
2
Water strainer on exhaust line
3
Power socket
4
Circuit breaker
5
Lower heaters cut-off thermostat reset button
6
Upper heaters cut-off thermostat reset button
7
Water pump fuse
8
Air pump fuse

Page 13 of 45 Pages
RESERVOIR
No.
description
1
Air release valve
2
Safety valve
3
Reservoir
ELECTRICAL BRACKET
No.
description
1
Upper heating elements safety thermostat
2
Lower heating elements cut-off thermostat
3
Upper heating elements cut-off thermostat
2
1
3
3
2
1

Page 14 of 45 Pages
4DESCRIPTION OF COMPONENTS
The item numbers refer to the FRONT VIEW drawing.
4.1 Control Panel
Item
Description
Operation
7.
WATER INDICATOR
LIGHT
Lights to indicate that water enters the
chamber.
8.
HEAT INDICATOR
LIGHT
Lights to indicate that the lower heaters are
activated. It will turn off when reaching the
preset temperature value.
9.
STE INDICATOR LIGHT
Lights to indicate that the pressure in the
chamber has increased to 1 Bar min.
10.
EXH INDICATOR LIGHT
Lights to indicate that the exhaust stage is
performed. The light remains on also during
the drying stage.
11.
DRY INDICATOR LIGHT
Lights to indicate that drying stage is in
process.
12.
END CYCLE INDICATOR
LIGHT
Lights to indicate that cycle has ended.
13.
PRESSURE GAUGE
0-4Bar, (0-60 psi) indicates the chamber
pressure and includes maximum point
indicator.
14.
MAIN SWITCH
Main power switch, which supplies electric
power to the autoclave.
15.
STERILIZATION TIMER
0-60 min.
Sets the sterilization cycles time (see sec. 7
for correct time settings).
Note: The power to the heating elements is
switched off when the Timer reaches 0
minutes.
16.
END CYCLE INDICATOR
LIGHT
Light to indicate that the sterilization cycle is
complete.
17.
DRYING TIMER
0-60 min.
Sets the drying time (see sec. 7 for correct
time settings).
The power to the heating elements is switched
off when the Timer reaches 0 minutes and
NIGHT switch is off.
18.
NIGHT SWITCH
Enables the operator to choose between
"stand-by" mode on or off.
19.
TEMPERATURE
SELECTION SWITCH
Sets the sterilization temperature for each
cycle {121ºC or 134ºC (250ºF or 273ºF).”

Page 15 of 45 Pages
Front
4.2 Other Components
dwg
Item
Description
Operation
2.
WATER DRAIN VALVE
Enables the drainage of water from the
reservoir.
Reservoir
—
AIR TRAP JET
Located in the water reservoir. Eliminates air
during heat up phase to insure correct
sterilization temperature is reached. Also
prevents air pockets and pockets of cold
steam from forming in the chamber.
—
SAFETY VALVE
Located in the water reservoir. Protects the
chamber by releasing any pressure above
40psi (2.7bar). This Safety Valve is required
and approved by ASME.
—
WATER RESERVOIR
Holds water for sterilization and also serves
as a condenser for the hot steam.
Electrical bracket
—
SAFETYTHERM OSTA
Prevents over-heating during the drying
stages.
—
LOWER HEATERS CU
OFF THERMOSTAT
Cuts off the power in case of overheating if
T the B10 thermostat does not operate. This
thermostat does not reconnect automatically
but must be reset.
—
UPPER HEATERS CUT
OFF THERMOSTAT
Cuts off the power to the heaters in case of
overheating if the safety thermostat does not
operate. This thermostat does not reconnect
automatically but must be reset.

Page 16 of 45 Pages
5INSTALLATION INSTRUCTIONS
Caution:
The sterilizer must be placed on a rigid and leveled surface. The stand must be
able to hold the load of the device and loaded material i.e. total –50 kg (110lb).
Note:
Make sure while placing the autoclave, to leave space around the machine, to
give the technician access to service the machine.
Note:
Keep the back and the sides of the autoclave approximately 25mm (1") away
from the wall to allow ventilation.
.
5.1 Electrical
The electrical connection should comply with the devices power requirement.
It must also comply with local installation and safety rules and regulations.
The voltage supplied to the device must comply with the label 5%.
In order to avoid any injury by electrical hazard, it is mandatory for the
customer to have installed an earth leakage relay (GFI outlet or circuit
breaker) in the electrical circuit to which the autoclave is connected. This relay
disconnects all the poles of the electrical power line in case of accidental
contact with the autoclave’s metal enclosure, by the operator or another
person, leading to a dangerous leakage current.
Connect the power cord to the socket on the rear side of the autoclave; plug
it into the supply outlet.
5.2 Setup
Proper adjustment of the chamber pitch is one of the most important things
you can do for the sterilizer. Proper chamber pitch insures that among other
things the sterilizer will have the proper amount of water in the chamber at the
beginning of each cycle. Insufficient water in the chamber, at the beginning
of the cycle, will cause the unit to overheat and activate one of the safety
thermostats. This will occur at some point during the cycle when the water
level becomes to low. If on the other hand there is too much water in the
chamber this will extend the heating portion of the cycle. Extending the heat
up time will shorten the sterilization time causing items to not be sterilized,
indicator strips to not change color and spore tests to fail.
For proper setup please follow these setup steps (see drawing below):
The autoclave should be turned off and unplugged
Make sure the counter is level and sturdy (3)
Make sure all the feet are on the autoclave and none have been lost.
Make sure the feet are free to move in and out (2)
Position the autoclave on the counter
Fill the reservoir with mineral-free water (see sec 7.2)
The chamber should be empty of any instruments, trays or leftover
water.
The chamber pitch now needs to be adjusted
Measure 350-450 ml (12-15 oz) of mineral-free water.

Page 17 of 45 Pages
Pour the proper amount of water into the chamber through the front door
of the unit (4)
This water should cover the bottom of the chamber to within +/- ½ inch
of the groove in the front. (1)
If necessary adjust the front leveling feet, up or down, so that the water
lays in the chamber correctly. (2)
Once the chamber pitch adjustment is completed, the unit is ready to
operate
Note: It is imperative to have the correct amount of water in the chamber
each cycle for proper operation of the autoclave.
5.3 Lifting and carrying
Caution:
Before moving the autoclave, Make sure that the electric cord is
disconnected from the power and there is no pressure in the chamber.
1. Disconnect the power supply cord.
2. Drain the water from the reservoir and vessel.
To avoid injuries, lifting and carrying should be done by two people.
Do not drop this device!

Page 18 of 45 Pages
6WATER QUALITY
The mineral –free water supplied to the autoclave should have the physical
characteristics and maximum acceptable level of contaminants indicated in the table
below:
Physical Characteristics and Maximum acceptable contaminants levels
in steam for sterlizers
(According to EN 13060:2004).
Element
Condensate –allowable content
Silicium oxide. (SIO2)
≤0.1 mg/kg
Iron
≤0.1 mg/kg
Cadmium
≤0.005 mg/kg
Lead
≤ 0.05 mg/kg
Rest of metals except iron, cadmium, lead
≤0.1 mg/kg
Chloride (Cl)
≤0.1 mg/kg
Phosphate (P2O5)
≤0.1 mg/kg
Conductivity (at 20°C)
≤3 μs/cm
pH value (degree of acidity)
5 to 7
Appearance
Colourless clean without sediment
Hardness (Σ Ions of alkaline earth)
≤0.02 mmol/l
Compliance with the above data should be tested in accordance with acknowledged
analytical methods, by an authorized laboratory.
Attention:
We recommend testing the water quality once a month. The use of water for
autoclaves that does not comply with the table above may have severe impact on the
working life of the sterilizer and can invalidate the manufacturer’s guarantee.