Tuttnauer ELCPVG-D Manual

OPERATION
&
MAINTENANCE
MANUAL
Laboratory Steam Sterilizers
Models 3840, 3850, 3870 ELCPVG-D, ELCPVGBH-D
ELCPVG-D –Including Pre-Vacuum
ELCPVGBH-D –Including Bio-Hazard
Cat. No. MAN205-0489000EN Rev C
Tuttnauer Europe b.v., Hoeksteen 11, 4815 PR, Breda, P.O. Box 7191, 4800 GD Breda, Netherlands. +31/76-5423510,
Fax: [phone]

Page 1 of 86 Pages
TABLE OF CONTENTS
PARAGRAPH PAGE NO.
1 GENERAL............................................................................................................4
1.1 Introduction.................................................................................................4
1.2 Incoming Inspection....................................................................................5
1.3 Warranty......................................................................................................5
1.4 Warranty Statement.....................................................................................6
1.5 Accessories...................................................................................................6
2 SAFETY INSTRUCTIONS ..................................................................................7
3 TECHNICAL DATA.............................................................................................9
3.1 Storage Conditions.......................................................................................9
3.2 Operating Conditions...................................................................................9
3.3 Directives and Standards.............................................................................9
3.4 Environment Emission Information .........................................................10
3.5 Electrical Data...........................................................................................10
3.6 Specifications.............................................................................................10
3.7 Construction ..............................................................................................11
3.8 Utilities.......................................................................................................11
3.9 Symbols Description ..................................................................................12
4 WATER QUALITY.............................................................................................15
4.1 Water for the Vacuum pump and drain cooling .......................................15
4.2 Reverse Osmosis ........................................................................................16
4.3 Safety Features..........................................................................................16
4.4 Description of Operation ...........................................................................17
4.5 Vacuum Test Program (PV –pre-vacuum model only)............................18
5 CONTROL PANEL ............................................................................................19
5.1 Description and Functions of the Front Panel Keyboard.........................20
5.2 Displayed Error Messages / Symbols.........................................................22
5.3 Displayed operational messages / Symbols................................................23
6 STERILIZATION PROGRAMS.........................................................................24
6.1 Program 1: Glass.......................................................................................26
6.2 Program 2: Plastic.....................................................................................27
6.3 Program 3: Liquid A..................................................................................28
6.4 Program 4: Liquid B –Waste....................................................................29
6.5 Program 5: Liquid A –Cooling (C –cooling models only).......................30
6.6 Program 6: Liquid B –Waste Cooling (C –cooling models only)............31
6.7 Program 7: Waste......................................................................................32
6.8 Program 8: Hollow Load...........................................................................33
6.9 Program 9: Vacuum Test (PV, pre-vacuum model only)..........................34
6.10 Program 10: Bowie and Dick Test (PV, pre-vacuum model only)............35
6.11 Program 11: Bio Hazard Liquid Cooling (BH, bio-hazard models only).36
6.12 Program 12: Bio Hazard Liquid (BH, bio-hazard models only)...............37
6.13 Program 13: Bio Hazard (BH, bio-hazard models only)...........................38

Page 2 of 86 Pages
6.14 Program 14: Warm Up (Optional).............................................................39
6.15 Program 15: Isothermal (Optional)...........................................................40
7 SCREENS...........................................................................................................41
7.1 Screens following a completely successful cycle –"Cycle Ended" ..........41
7.2 Screens following aborted cycles after complete sterilization stage..........42
7.3 Screens following a fail cycle:...................................................................42
8 CHECKING AND CHANGING PARAMETERS AND OTHER DATA...........44
8.1 Directories and subdirectories...................................................................44
8.2 Entering the main menu............................................................................45
8.3 System Parameters.....................................................................................46
8.4 History........................................................................................................49
8.5 Maintenance ..............................................................................................51
8.6 Advanced Options......................................................................................55
8.7 Version information...................................................................................57
9 PRINTER............................................................................................................61
9.1 Printer Output............................................................................................61
9.2 Printer Handling........................................................................................63
10 PREPARATION BEFORE STERILIZATION..................................................66
10.1 Instruments................................................................................................66
10.2 Liquids .......................................................................................................67
10.3 Loading......................................................................................................67
11 OPERATING INSTRUCTIONS.........................................................................68
11.1 Turning on the autoclave...........................................................................68
11.2 Opening the door .......................................................................................68
11.3 Loading......................................................................................................69
11.4 Starting cycle .............................................................................................71
11.5 Unloading ..................................................................................................73
11.6 Stopping the process and cancelling the ERROR message.......................73
11.7 Start Cycle by Clock mode.........................................................................74
11.8 Moving the Autoclave................................................................................74
11.9 Loading and Unloading the Device...........................................................74
12 DOOR SAFETY SYSTEM..................................................................................76
12.1 Electric door locking system......................................................................76
12.2 Pressure switch..........................................................................................76
13 SERVICE AND MAINTENANCE.....................................................................77
13.1 Preventive Maintenance ............................................................................77
13.2 Checking the Safety Valve.........................................................................78
14 TROUBLESHOOTING......................................................................................81
15 SPARE PARTS LIST..........................................................................................86
16 ACSSESORIES LIST.........................................................................................86

Page 3 of 86 Pages
TABLE OF CONTENT (Cont.)
DRAWINGS PAGE NO.
OVERALL DIMENSIONS..........................................................................................11
FRONT VIEW .............................................................................................................13
REAR VIEW................................................................................................................14
CONTROL PANEL DRAWING..................................................................................19
BASKETS AND CONTAINERS .................................................................................85

Page 4 of 86 Pages
1GENERAL
1.1 Introduction
Model 3870 ELCPVGBH-D is a laboratory sterilizer designed
especially for the sterilization of instruments, liquids, and other
materials in hospital laboratories (including the medical waste),
medical laboratories, research institutes, food laboratories and
pharmaceutical facilities.
The PV (pre-vacuum) models are equipped with a vacuum pump.
The advantages of the pre-vacuum sterilizer in comparison to the
regular gravity displacement steam sterilizer are as follows:
—Removal of air pockets from packs and porous loads and most
kinds of tubes (rubber, plastic etc.) by vacuum at the first stage of
the cycle.
—Better steam penetration into the load; resulting in effective
sterilization.
—Better temperature uniformity.
—Better drying of materials with closed doors due to the vacuum
achieved in the chamber at the end of the sterilization cycle.
The autoclave is equipped with A 9Kw generator that produces the
steam required for the sterilization.
A special feature of the autoclave is the fast cooling stage for liquids.
In this stage pressure in the chamber is increased by means of
compressed air to compensate the fast decreasing of pressure due to the
fast cooling. The fast cooling shortens the time required for safe
handling of bottles.
In BH (bio-hazard) models, a bio-hazard filter installed in the chamber
enables sterilizing bio-hazard load without contaminating the
surrounding.
A computerized control unit ensuring a fully automatic sterilization
cycle controls the autoclave.
The temperature and pressure are controlled through sensors placed
inside and outside the media container or bottles.
The sterilizer is fully automatic with a choice of 10 programs,
eliminating any need for operator intervention during a cycle
(programs 9-10 are for testing only). A computerized control unit
enables precise control and monitoring of physical parameters and
clear documentation of the sterilization cycles.
The autoclave is equipped with a safety valve, which will discharge at
an overpressure of over 2.8 Bar (40 psi), which is located on the
chamber near the pressure switch and the steam pressure gauge. The
control system provides adequate protection, to ensure the safety of
personnel and reliable operation with a minimum of down time.
The sterilizer has multiple built - in safety devices, which provides
adequate protection to ensure the safety of operating personnel.
The printer prints the preset and actual parameters of the cycle
(temperature, time and pressure).
The autoclave is provided with a pressure gauge that is used as guide
only. Should there be a power failure during the operation of the

Page 5 of 86 Pages
autoclave, the pressure gauge indicates to the operator that there is
pressure in the chamber.
A deviation of +1.6% is accepted.
NOTE:
After operating the sterilizer, brown stains might appear on the bottom
of the chamber. These stains are a result of the heating elements that
are located at the lower external part of the chamber. The brown color
is a common phenomenon, can easily be removed, and will not have
any effect on the sterilized goods.
This manual is intended to give the user a general understanding of
how the autoclave works and indicates the best ways to operate and
take care of it in order to obtain optimum results and a trouble-free
operation. After reading this manual, operating the autoclave should be
straightforward. However, since the autoclave is built using 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, holding
technical documentation and adequate test instrumentation are
authorized to undertake repair or service.
1.2 Incoming Inspection
The autoclave should be unpacked and inspected for mechanical
damage upon receipt. 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 damage is apparent, contact your dealer or point of purchase, so that
they may notify the manufacturer and file a claim with the appropriate
carrier.
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.
1.3 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 in sec. 12.1 (Preventive 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 outside the factory without prior authorization from us.
The Autoclave should not be used in a manner not described in this
manual!

Page 6 of 86 Pages
1.4 Warranty Statement
The warranty registration must be completed and returned to our
service departments; within fourteen (14) days of purchase or the
warranty will be void.
Our Technical Service Depts can be reached at:
Tuttnauer Europe b.v., Hoeksteen 11, 4815 PR, Breda,
P.O. Box 7191, 4800 GD Breda, Netherlands. +31/76-5423510,
Fax: [phone], E-mail: [email protected]
Note:
If there is any difficulty with this instrument, and the solution is not
covered in this manual, contact our representative or 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 the autoclave is equipped with a printer, send along a copy of the last
printout for our inspection. 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.
1.5 Accessories
Stainless steel containers: A stainless steel container, for waste
products, is available. This container has vent holes on its upper part

Page 7 of 86 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.
Make sure that you know where the main power switch is, where the water
cut-off valve is and where the compressed air disconnection valves (if
applicable) are located.
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.
The weekly spore test is part of the preventive maintenance plan, along with
the annual validation of the sterilization processes that ensures appropriate
temperature dispersion within the chamber.
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.
1. Never start using a new autoclave or a new steam generator before the
safety, licensing and authorization department has approved it for use.
2. 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.
3. 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.
4. Liquids may be sterilized only with the “liquids” programs. The
container must be covered but not sealed. Sealed bottles may only be
sterilized using a special program. The bottle must be either Pyrex or a
Borosilicate glass bottle. Verify that the two temperature sensors are
located inside two different bottles to assure that the liquid temperature
is 20°C below boiling temperature for sealed bottles at the end of the
cycle.
5. 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.
6. Individual glass bottles may be placed within an appropriate container.
Never place glass bottles on the floor of the autoclave. Never fill more
than 2/3 of the bottle volume.
7. On closing the autoclave's door, make sure it is properly locked before
activating.
8. Before withdrawing trays and containers, wear heat resistant gloves.
9. Before opening the door, verify that there is no pressure in the chamber
(chamber pressure gauge is located on the autoclave's front panel or
door, depends on model).

Page 8 of 86 Pages
10. Open the door slowly to allow steam to escape and wait 5 minutes
before you remove the load. When sterilizing liquids, wait 10 minutes.
11. Once a month, ensure that the safety valves are functioning, and once
annually a certified tester must conduct pressure chamber safety tests.
12. Once annually, or more frequently, effective tests must be performed,
i.e., calibration and validation.
13. Examine the condition of assemblies on a regular basis. Make sure
there are no leaks, breaks, blockages, whistles or strange noises.
14. It is required to conduct maintenance operations as instructed.
15. Immediately notify the person in charge of any deviation or risk for the
proper function of the device.

Page 9 of 86 Pages
3TECHNICAL DATA
3.1 Storage Conditions
The packed or unpacked autoclave shall be retained in indoor
conditions!
3.2 Operating Conditions
The autoclave is intended to work in ‘indoor’ conditions only.
Only autoclavable materials shall be used.
The environment shall not exceed an ambient temperature
range of 5ºC (41ºF)-40ºC (104ºF) and a relative humidity of
85% respectively.
The operation altitude shall not be over 2000 meters (6561 feet)
(ambient pressure shall not be lower than 80 kPa (11.6 psi)).
The autoclave shall not be used in a manner not specified in
this manual!
Do not use the autoclave in the presence of dangerous gases.
Operate the autoclave only in the manner specified in the
manual. If the equipment is used in a manner not specified by
the manufacturer, the protection provided by the equipment
may be impaired.
Caution!
Waste water should be brought into the public net in
accordance with the local rules or requirements i.e. only non-
hazardous liquids shall be disposed in public sewage!
3.3 Directives and Standards
Every autoclave meets the provisions of the following Directives and is
constructed in compliance with the following Standards:
3.3.1 Technical Directives
1. Pressure Equipment Directive 97/23/EC.
2. Council Directive for low voltage equipment
73/23/EEC.
3.3.2 Technical Standards
1. DIN 58951 series
2. ASME code
3. EC-61010-1 & IEC-61010-2-040 - Safety requirements
for medical device.
4. EN 61326 –EMC Requirements .
3.3.3 Quality standards
The manufacturing plant meets the following quality
standards:

Page 10 of 86 Pages
1. EN ISO 9001:2008–Quality System
2. ISO 13485:2003 –Quality systems –Medical devices.
3.4 Environment Emission Information
A. Peak sound level generated by the sterilizer is < 70dBA with a
back sound level of 60 dBA.
B. Total heat transmitted by the sterilizer is < 100 W/h
3.5 Electrical Data
PROPERTIES
208V
version
230V
version
380V
version
Ampere (A)
16A
16A
10A
Voltage (V)
208V/3ph
230V/3ph
380V/3ph
Hertz (Hz)
50/60 Hz
50/60 Hz
50/60 Hz
Heaters power (W)
6000
6000
6000
Protection against electrical shock
Class I
Class I
Class I
Degree of protection by enclosure
IP31
IP31
IP31
3.6 Specifications
PROPERTIES
MODEL
3850
3870
Chamber diameter
380
mm
(15")
380 mm
(15")
Chamber depth
50.29
cm
(19.8")
760 mm
(30")
Overall dimensions
Height
1365
mm
(53.7”)
1365 mm
(53.7”)
Width
722mm
(28.4”)
722mm
(28.4”)
Length
1183 (46.6”)
1183 (46.6”)
Maximum
dimensions
(door open)
Width
804mm
(31.7”)
804mm (31.7”)
Length
1673m
m
(65.9”)
1673mm
(65.9”)
Max. Allowable Working
pressure (MAWP)
2.8 bar (40 psi)

Page 11 of 86 Pages
OVERALL DIMENSIONS
3.7 Construction
Chamber and door material
Stainless steel
Outer Cabinet
Stainless Steel
Chamber insulation
Fiberglass with reinforced material
3.8 Utilities
3.8.1 Electrical utility
Power
Recommended
Circuit Breaker
380-400V(3 Ph + Neutral +
Earthing)
16A
Frequency
50/60Hz
3.8.2 Other Utilities
Compressed Air
(ELCPVGBH-D only)
1/2" 3-4 Bar (44-58 psi)
Tap water
1/2", 2-3 Bar (29-44 psi)
Mineral free water
1/2", 2-3 Bar (29-44 psi)
Drain
2" Minimum Withstanding temp.
of 80°C (176°F)

Page 12 of 86 Pages
Attention:
A switch or circuit-breaker must be included in the building
installation. This switch or circuit-breaker shall be in close
proximity to the equipment, within easy reach of the operator; and
marked as the disconnecting device for the equipment.
The electrical net must be protected with a current leakage safety
relay.
The electrical network must comply with local rules or regulations.
Verify that there is an easy access to the main power switch, to the
water cut-off valve and to the current leakage safety relay.
Make sure while placing the autoclave, to leave space around the
machine, to give the technician access to service the machine.
All water connections to autoclave must be performed through
"BACK FLOW PREVENTION SYSTEM" only, as per IEC
61770.
3.9 Symbols Description
Caution! Consult accompanying documents
Caution! Hot surface.
Caution! Hot steam.
Protective earth (Ground)
On-Off

Page 13 of 86 Pages
FRONT VIEW
No.
Description
No.
Description
1
Front leg
7
Printer cover
2
Generator Pressure Gauge
8
Service Door
3
Door cover
9
Rear Leg
4
Chamber Pressure gauge
10
USB socket
5
Display
11
RJ45 connector
6
Keyboard
12
Printer
13
Main switch
1
4
8
3
2
6
10
5
7
11
12
13
9

Page 14 of 86 Pages
REAR VIEW
No.
Description
No.
Description
1
Rear leg
10
Service door
2
Mineral-free water drain
11
Generator safety valve
3
Tap water drain
12
Chamber safety valve
4
Overflow
13
Compressed air inlet
5
Mineral-free water inlet
14
Air pressure gauge
6
Tap water inlet
15
Air pressure regulator
7
Power cable socket
16
Service door
8
Circuit breaker
17
Front leg
9
Fan
17
11
13
14
16
12
1
2
15
3
8
10
6
4
7
5
9

Page 15 of 86 Pages
4WATER QUALITY
The distilled or mineral by two water systems: to the sterilizer shall be according
Tap water for the vacuum pump:
Hardness should not exceed 0.7:2 mmol/l S
Pressure should be in the range of 2–5. bar (30–70 psi)
Connection to the network by a ½”connection Distilled or Mineral
Free Water:
Distilled or mineral free water for the steam generator.
Connect the distilled water inlet to a distilled or mineral free water
supply source by a ½" pipe.
Pressure should be in the range of 2–5. bar (30–70 psi)
Physical Characteristics and Maximum acceptable
contaminant levels in water or steam, for steam
generator and sterilizers
(According to EN 285:2006).
Contaminants
in water
supplied
to generator
Contaminants
in condensate
at steam inlet
to sterilizer
Evaporate residue
≤ 10 mg/l
N/A
Silicate (SiO2
≤ 1 mg/l
≤ 0.1 mg/l
Iron
≤ 0.2mg/l
≤ 0.1mg/l
Cadmium
≤ 0.005 mg/l
≤0.005 mg/l
Lead
≤ 0.05 mg/l
≤ 0.05 mg/l
Rest of heavy metals except iron,
cadmium, lead
≤ 0.1 mg/l
≤ 0.1 mg/l
Chloride (Cl)
≤ 2 mg/l
≤ 0.1 mg/l
Phosphate (P2O5)
≤ 0.5 mg/l
≤ 0.1 mg/l
Conductivity (at 25°C)
≤ 5 µs/cm
≤ 3 µs/cm
pH value (degree of acidity)
5 to 7.5
5 to 7
Hardness (Σ ions of alkaline earth)
≤ 0.02 mmol/l
≤ 0.02 mmol/l
Appearance
Colourless, clean, without sediments
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 that do not comply with the table above may have severe impact
on the working life of the sterilizer and can invalidate the
manufacturer’s guarantee.
4.1 Water for the Vacuum pump and drain cooling
The feed water supplied to the liquid ring vacuum pump must meet the
following requirements:

Page 16 of 86 Pages
Hardness: 0.7 - 0.2 mmol/l.
Water temperature: shall not exceed 15°C.
Note:
The use of heavy scaled water for the vacuum pump cooling, can cause
blocking of the rotor and put the pump out of operation. This
invalidates the guarantee for the vacuum pump.
4.2 Reverse Osmosis
A Reverse Osmosis system may be used to improve the
quality of the water used to generate steam in the autoclave
chamber. The use of mineral free will contribute to better
performance and longer life of the autoclave.
A Reverse Osmosis (RO) system may be used to improve the
quality of the water used to generate steam in the autoclave
chamber.
In RO, the water is forced through a semi-penetrable
membrane, which filters out contaminants to a high degree
of efficiency. In deionisation (DI) ions and charged particles
are removed either by electric fields or by ion exchange in
resin beds.
Although the RO cannot normally attain the degree of purity
possible with the DI methods, it is more than adequate for
the feed water intended for clean-steam generators.
Moreover the RO has several advantages:
1. RO is cheaper to install and to run than DI.
2. RO removes particulate matter, organic molecules and
pyrogens that DI cannot remove
3. RO water is less corrosive to steel and copper than DI
water.
4. RO maintenance requirements are less demanding than
those of the DI units.
Therefore the use of mineral free water will contribute to
better performance and longer life of the autoclave.
4.3 Safety Features
This autoclave includes built-in safety features such as:
Error message display.
Electronic pressure and temperature measurement.
Safety relief valve to avoid build-up of excessive pressure.
Door switches enabling operation to be started only when the door
is closed.
Water level safety device.
Excess temperature protection.

Page 17 of 86 Pages
4.4 Description of Operation
4.4.1 Air removal
The autoclave is equipped with a vacuum pump for
performing the air removal stage. Before the sterilization
stage, one or two vacuum pulses (according to the cycle) are
built in the chamber. Removing air pockets in the autoclaved
material improves the penetration of the steam during the
sterilization stage.
4.4.2 Heat
The ELCPVG-D is equipped with a steam generator that
maintains a constant steam pressure. After a cycle has been
initialized and air removal stage has been completed, steam
is introduced into the chamber. The temperature and pressure
in the chamber increase until appropriate levels are reached.
Sensors located inside the chamber control the temperature
and pressure levels.
4.4.3 Sterilization
The sterilization temperature is factory set at 134C (273F)
for instruments and at 121C (250F) for liquids and other
materials for which this temperature is appropriate. These
settings may be modified before each cycle. When
sterilization temperature is reached, the timed sterilization
cycle begins.
4.4.4 Cooling (Optional)
The autoclave is designed to operate two liquid cooling
cycles, as follows:
1.13.3.1 Sealed bottles (cooling with compressed air)
On completion of the sterilization stage, feed
water starts flowing through the cooling coil
mounted around the outer side of the chamber.
Compressed air is injected inside the chamber and
keeps a constant air pressure to balance the
internal pressure of the liquids inside the bottles.
Compressed air is passed through a 0.2µ
microbiological filter. When temperature of the
liquids reaches the final set temperature, the
cooling stage is completed, flowing water and
compressed air is stopped, pressure in the chamber
goes down to atmospheric pressure.
At this stage, the door of the autoclave can be
opened and the sterilized materials can be taken
out of the chamber.
1.13.3.2 Unsealed bottles (cooling without compressed
air)
On completion of sterilization, steam is exhausted
from the chamber at a slow rate. When chamber
pressure goes down to atmospheric pressure, water
starts flowing through the cooling coil mounted
around the outer side of the chamber. On
conclusion of the cycle the water flow is stopped

Page 18 of 86 Pages
automatically, process is completed and it is
possible to open the door and take out the
sterilized goods from the chamber.
Operations Sequence
Vacuum is produced into the chamber down to 15-5 kPa.
The vacuum pump stops.
Note: During the test period the autoclave is not heated.
4.4.5 Exhaust
When the timed sterilization cycle is complete, the unit
enters into the exhaust stage, provided that a program other
than the liquid program was selected. The steam is exhausted
from the chamber, bringing the internal pressure down to
atmospheric pressure.
Note: In the Bio-Hazard cycles (optional for BH, bio-hazard
models), all exhaust from the chamber before completion of
the Sterilization phase are performed through the bio-hazard
filter.
4.4.6 Drying (PV –pre-vacuum nodel only)
Drying stage; vacuum is built up and the coil heats the
chamber for time set in Dry Time parameter.
4.5 Vacuum Test Program (PV –pre-vacuum model only)
Vacuum is produced in the chamber down to P1=15 kPa. At this stage
all the valves close. The autoclave remains in this stage for 5 minutes.
This period enables the condition in the chamber to reach
equilibrium. After the 5 minutes have elapsed the printer records the
pressure that is referred to as P2. At this point the test begins and lasts
10 minutes. At the end of the test, the printer records the results. The
pressure at the end of the test is referred to as P3. The rate of change
of P3-P2shall not exceed 0.13 kPa/min.). If P3-P2exceed 0.13
kPa/min the printer will print “FAIL”. If P3-P2is within the required
value, the cycle will end normally.
Operations Sequence
Vacuum is produced into the chamber down to 15-5 kPa.
The vacuum pump stops.
Note: During the test period the autoclave is not heated.