Thermo Scientific ST75920-33 User manual

Sterilemax
Table Top Steam Sterilizer
Operation Manual
Series 1277
LT1277X1 • 5/23/07 Seria Number
Model Numbers Voltage
ST75925 120V
ST75920-33 220V

2
Sterilemax Table Top Sterilizer

3
Table of Contents
Introduction..........................................................................................................................................................5
Safety Information ..............................................................................................................................................6
Warnings ..........................................................................................................................................................6
Specifications ......................................................................................................................................................9
Trays ................................................................................................................................................................9
Dimensions ......................................................................................................................................................9
Shipping Weight ..............................................................................................................................................9
Electrical ..........................................................................................................................................................9
Standards ........................................................................................................................................................9
Reservoir Water ..............................................................................................................................................9
Mounting ..........................................................................................................................................................9
Controls............................................................................................................................................................9
Environmental Conditions ..............................................................................................................................10
Declaration of Conformity ..............................................................................................................................10
Description ........................................................................................................................................................11
Operational Programs ....................................................................................................................................11
Program Summary Chart ..............................................................................................................................12
Controls..........................................................................................................................................................13
Sterilizer Features..........................................................................................................................................14
Installation ........................................................................................................................................................16
Location..........................................................................................................................................................16
Unpacking ......................................................................................................................................................16
Electrical Connections ..................................................................................................................................17
Optional Printer ..............................................................................................................................................17
Installation Instructions ..................................................................................................................................18
Altitude Adjustment............................................................................................................................................20
Display Parameter Setup ..................................................................................................................................21
Setting Month/Date/Year/Hour/Minute ..........................................................................................................21
Changing Temperature Units ........................................................................................................................22
Changing Pressure Units ..............................................................................................................................22
Changing Printer Mode ..................................................................................................................................23
Sterilization Procedures ....................................................................................................................................24
Materials Appropriate For Steam Sterilization ..............................................................................................24
Instrument Cleaning Prior To Sterilization......................................................................................................25
Preparation of Carbon Steel Instruments ......................................................................................................26
Preparing Items for Sterilization ....................................................................................................................26
Loading the Sterilizer Chamber ....................................................................................................................31
Handling Sterilized Materials ........................................................................................................................32
Recommended Monitoring ................................................................................................................................33
Process Monitoring ........................................................................................................................................33
Biological Indicators ......................................................................................................................................34
Operation ..........................................................................................................................................................36
Initial Startup ..................................................................................................................................................36
Outline of Operation ......................................................................................................................................37
Details of Operation ......................................................................................................................................37
Drying Sterilized Loads ..................................................................................................................................38
Optional Printer ................................................................................................................................................39
Connecting and Starting the Printer ..............................................................................................................39

4
Control Panel ................................................................................................................................................39
Installing the Paper Roll ................................................................................................................................40
Printer Operation............................................................................................................................................40
Printer Tape Description ................................................................................................................................41
Printer Record Storage ..................................................................................................................................42
Special Operating Instructions ..........................................................................................................................44
Emergency Off (Cycle Abort) ........................................................................................................................44
Resetting Automatic OTP ..............................................................................................................................44
Erratic Controls Display or Operation ............................................................................................................45
Power Failure During Sterilizing Cycle ..........................................................................................................45
Problem Solving Chart ..................................................................................................................................46
Maintenance Schedule Chart ........................................................................................................................48
Maintenance ..................................................................................................................................................49
Daily Maintenance ........................................................................................................................................49
Weekly Maintenance......................................................................................................................................49
Monthly Maintenance ....................................................................................................................................50
Emptying Collection Bottle ............................................................................................................................51
Cleaning Non-Recirculating Water Cooling Tank ..........................................................................................52
Changing Door asket ..................................................................................................................................53
Figures ..........................................................................................................................................................54
Parts List ........................................................................................................................................................57
Ordering Procedures......................................................................................................................................59
Decontamination Statement..............................................................................................................................59
One Year Limited Warranty ..............................................................................................................................60
TABLE OF CO TE TS

5
Introduction
This Thermo Scientific Sterilemax Table Top steam sterilizer
has been designed for use in medical and dental offices, uni-
versity laboratories, clinics, hospitals and other locations
where a variety of materials require sterilizing.
Your sterilizer can be used for wrapped or unwrapped
instruments, packs, liquids, test tubes, petri dishes and
media.
The optional Impact printer provides a permanent
record of actual exposure times and temperatures.
eneral Usage
Do not use this equipment for any purpose other than its
intended use, described in this manual.
Warning
Do not use this equipment for
any purpose other than its
intended use, described in this
manual.
Do not use the sterilizer to
process volatile substances or
materials which could release
toxic or explosive substances.

6
Safety Information
Warnings
1. Do not use this equipment for any purpose other than
its intended use, described in this manual.
2. Use only self-venting, automatic sealing stoppers
when processing liquids or media. Use of other stop-
pers or seals, or lack of stoppers, will create the pos-
sibility of burns or injury from boiling liquids and
exploding flasks.
3. Refer servicing to qualified personnel.
4. Use caution when opening the sterilizer door. Stand
to the side behind the door and open door slowly and
partially to protect yourself from escaping steam or
boiling liquids and exploding flasks.
5. Sterilizer and trays will be hot after cycle is run.
Always wear protective gloves and apron when
removing a processed load. Protective gloves and
apron should also be worn when reloading sterilizer
following previous operation.
6. Do not attempt to open sterilizer door until the display
reads "Cycle Complete". Pressure within the cham-
ber could cause the door to open with extreme force,
possibly causing personal injury.
7. Ensure that the sterilizer is cool before cleaning to
avoid burns.
8. Pressurized steam will be discharged when the relief
valve is opened. To prevent burns, place a steam
barrier (such as a rolled towel) around the opening in
the back of the unit. To prevent burns, wear gloves or
use an extension device if it becomes necessary to
operate the pull ring.
Warning
Warnings alert you to a possibility of
personal injury.
Caution
Cautions alert you to a possibility
of damage to the equipment.
ote
Notes alert you to pertinent facts
and conditions.
Hot Surface
Hot surfaces alert you to a possibility
of personal injury if you come in
contact with a surface during use or
for a period of time after use.
Alert Signals
Consult Instructions for Use
This symbol appears on the product
to refer you to the instruction manual
for further information.

7
9. Do not use the sterilizer to process volatile sub-
stances or materials which could release toxic or
explosive substances.
10. Connect only to an electrical circuit of the appropri-
ate voltage and load rating.
11. Do not overfill reservoir. To avoid slippery condi-
tions and possible load recontamination, immedi-
ately wipe up all spillage resulting from overfilling
chamber or reservoir.
12. Do not add water to reservoir while a sterilization
cycle is in process. When the cycle ends and
steam vents back into the reservoir, a sudden
overflow of hot water could occur, possibly result-
ing in burns to personnel.
13. To prevent collection of mineral deposits and corro-
sion of chamber components, use distilled or low
quality deionized water only. Clean chamber after
each use if sterilizing saline solutions.
14. Processing goods at less than recommended
time/temperature could result in unsterile goods.
15. Reprocess your load when the sterilizing cycle has
been terminated prematurely. The load may not be
sterile when the sterilizing cycle has been terminat-
ed prematurely.
16. Open door slowly at the end of a liquid sterilization
cycle. Do not allow hot bottles to be jolted. This
can cause bottle explosions. Do not move bottles if
any boiling or bubbling is present.
17. Allow bottles to cool before attempting to move
them from sterilizer shelf or tray(s) to the storage
area.
18. If media is processed, bottles and tubes should
contain no more than 3/4 the total volume of the
container. When processing water bottles and test
SAFETY IFORMATIO

8
tubes, the bottles and tubes should contain no
more than 3/4 the total volume of the container.
Chamber should be cleaned daily when process-
ing media.
19. Keep patients at least six (6) feet away from the
sterilizer when it is in use.
20. Do not operate this sterilizer in the presence of
flammable or explosive substances (such as anes-
thetics). A fire or explosion could occur.
21. Never use a wire brush, steel wool, abrasive mate-
rial, or chloride-containing products to clean door
and chamber assembly.
22. Use a process monitor in every cycle to ensure
exposure to minimum sterilizing conditions. Use a
biological indicator once a week to verify your ster-
ilization process.
23. Dental handpieces should be run only on optional
cycle at 132°C for 10 minutes. Check manufactur-
er's recommendations for sterilization parameters.
SAFETY IFORMATIO

9
Specifications
Trays
Tray Dimensions
Large - 15 1/2" x 9 3/16"
(39.4 x 23.3 cm)
Small - 15 1/2" x 6"
(39.4 x 15.2 cm)
umber of Trays
The sterilizer is supplied with two
trays, 1 large and 1 small, and one
rack.
Dimensions
Capacity
34 Liters (Vessel) (1.2 cubic feet)
7.0 Liters (Reservoir)
Overall Dimensions
W x D x H Inches(cm)
22 7/16" x 24 1/2" x 17"
(57.0 x 62.2 x 43.2)
Chamber (Dia. x Depth)
12" X 18"
(30.5 x 45.7)
Shipping Weight
85 lbs. (38.5 kg)
Electrical
Heater Power
1500 W
Power requirements
120V, 50/60 Hz, 12.5 Amps
220V, 50/60 Hz, 6.5 Amps
Standards
ASME
UL/cUL to UL3101-1
Reservoir Water
Distilled or low quality
deionized
Max. 1.5 Megohm/cm
Min. .5 Megohm/cm
Mounting
Benchtop only
Controls
Fixed Cycles
- Liquid
- Packs
- Wrapped
- Unwrapped
Optional Cycle
ote
You can examine
the pressure vessel
rating plate for the
sterilizer chamber by
opening the panel
on the back cover of
the sterilizer, then
removing the small
plug of insulation on
the back of the ster-
ilizer chamber.

Environmental Conditions
Operating: 4°C - 40°C; 20% - 80% relative humidity, noncondensing. Installation Category II
(overvoltage) in accordance with IEC 664. Pollution Degree 2 in accordance with IEC 664.
Altitude limit: 3,650 meters.
Storage: -25°C - 65°C; 20% - 80% relative humidity.
Declaration of Conformity
(for 230 volt, CE models only)
We hereby declare under our sole responsibility that this product conforms with the technical requirements of
the following standards:
EMC: EN 61000-3-2 Limits for harmonic current emissions
EN 61000-3-3 Limits for voltage fluctuations and flicker
EN 61326-1 Electrical equipment for measurement,
control, and laboratory use; Part I: eneral
Requirements.
Safety: EN 61010-1 Safety requirements for electrical equipment
for measurement, control, and laboratory
use; Part I: eneral Requirements.
EN/EIC 61610-2-010 Part II: Particular requirements for
laboratory equipment for the heating of materials.
EN61010-2-041 Part II: Particular requirements for autoclaves using steam
for the treatment of medical materials, and for laboratory
processes.
and meets the requirements of the Medical Device Directive 93/42/EEC, and its relevant transition into the
national laws of the member states into which we place the device(s).
The authorized representative located within the European Community is:
Thermo Fisher Scientific
419 Sutton Road
Southend On Sea
Essex SS2 5PH
United Kingdom
Copies of the Declaration of Conformity are available upon request
10
SPECIFICATIO S
0086

11
ote
The liquid cycle is not designed for
sterilization of liquids in a clinical
application. Do not prepare sterile
liquids for in vivo applications with
the Sterilemax system.
Dental handpieces should be run
in the optional cycle at 132°C for
10 minutes. Refer to manufactur-
er's recommendations for contra
indication of sterilization parame-
ters.
When sterilizing handpieces, refer
to the manufacturer's specifica-
tions on handpieces for contra
indication of sterilization parame-
ters.
Operational Programs
The sterilizer has four preset cycles which have been opti-
mized to provide excellent results for most applications. In
addition, there is one optional cycle that allows you to set
your own sterilization parameters. You access the pre-pro-
grammed cycles by pushing one of the four green fixed-cycle
buttons. The four preset sterilization programs are:
Unwrapped Goods
For unwrapped instruments and items made of metal,
glass or plastic. Parameters: 3 minutes at 135°C.
Wrapped Goods
For wrapped packs of clothes, bandages, pads, fabrics,
rubber tubing and metal instruments. Parameters: 10 minutes
at 135°C.
Liquids
For distilled water, media solutions and other liquid pre-
pared in closed bottles or flasks. Parameters: 15 minutes at
121°C.
Packs
For packs of instruments and towels and other packed
goods. Parameters: 30 minutes at 121°C.
Description

12
Program Summary Chart
DESCRIPTIO
ote
When sterilizing handpieces, refer to the manufacturer's
specifications on handpieces for contra indication of
sterilization parameters.
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13
DESCRIPTIO
ote
The "Select" button is used by ser-
vice personnel to adjust the oper-
ating parameters of the sterilizer.
Controls
All cycles and programming are selected and set in using the
front touchpad selector buttons.
Power Switch
The Power Switch turns power to the unit on and off. When
you turn the power on, the display will be set to select a steril-
ization cycle. It is located under the right front corner of the
sterilizer.
Cycle Buttons (Green)
These buttons allow you to run the preprogrammed cycles at
the touch of a button. See Operational Programs.
Optional Cycle (Yellow)
This parameter allows you to select different time and tem-
perature levels for your cycles than those provided with our
preset programs. An optional cycle can be run as either a liq-
uid or hard goods cycle. All material run in this cycle must be
validated by the user.
Up/Down Arrows (Yellow)
These allow you to set the time and temperature in an option-
al cycle. They are also used for scrolling through other func-
tions.
Start Cycle (Dark Green)
Pressing the "Start Cycle" Switch activates the currently
selected processing cycle. It is also used for scrolling through
other functions.
Stop (Red)
This control is used to terminate any cycle. It is also used for
scrolling through other functions.

14
DESCRIPTIO
Sterilizer Features
Optional Printer
The optional printer available is an impact printer that records
each cycle's performance. See page 39 for more information.
Pressure Monitor
The pressure monitor indicates the pressure inside the chamber.
This monitor's readings can be found on the display as each
cycle is running.
Door Security
While the chamber is under pressure, the door is held securely
closed with three separate locking systems. First, there is a lock-
ing handle that you must tighten to hold the door fully closed. The
locking handle turns clockwise to close and counterclockwise to
open. Second, there is a pressure actuated locking pin which
automatically secures the door, preventing it from being inadver-
tently opened while there is pressure in the chamber. Finally,
there is a backup catch which will prevent the door from opening
fully even if there is a small amount of pressure in the chamber.
You release this catch with a lever which is located in the lower
left side of the door. To fully open the door, pull the door release
lever toward you.
Optional on-Recirculating Tank
The optional non-recirculating tank is used to collect the remain-
ing cycle water after a cycle has completed. This prevents any
debris from the cycle to go back into the fresh water reservoir.
Door Switch
Actuated by the door, the door switch prevents operation of the
sterilizer if the door is not fully closed.
Pressure Relief Valve
This valve protects the coded vessel from pressures exceeding
the pressure rating of the vessel. The valve opens and releases
steam in the event that pressure in the vessel exceeds 45 PSI
(310 kPa). The pressure line is located in the back of the unit. An

15
Warning
Pressurized steam will be
discharged when the relief
valve is opened. To prevent
burns, wear gloves or use
an extension device if it
becomes necessary to oper-
ate the pull ring.
access hole is located in the back panel to allow you to peri-
odically check relief valve operation.
Reservoir Drain
A drain assembly is provided to empty the reservoir. The
reservoir drain assembly and plug are located at the lower
right of the chamber opening on the front of the sterilizer (as
you face the unit). The drain assembly attaches to the drain
connector so a hose can be attached for draining the steriliz-
er reservoir into a container.
Trays and Tray Rack
A rack for the inside of the sterilizer is provided to hold the
instrument trays. The rack slides out of the chamber to allow
periodic cleaning of the chamber and rack.
Three large trays and one small tray can be placed into the
rack or the rack can be used with only one or two trays or no
trays. Tall items can be sterilized by removing both trays and
placing the objects on the bottom surface of the rack. One
large and one small tray are provided with the unit. See
"Loading the Sterilizer Chamber" on page 31 of this manual.
DESCRIPTIO

16
Installation
Location
For optimum performance of your sterilizer, the sterilizer
should be installed in conformance to the following parame-
ters:
Surface
For proper operation, the sterilizer must be placed on a level,
heat and water resistant surface. If the surface is not level,
the water in the sterilizer will be unevenly distributed, possibly
resulting in a sterilizer malfunction. Do not adjust position of
the feet on the sterilizer.
Clearances
Allow at least 3" (75mm) between the sterilizer and walls on
the sides and back for air circulation. Also allow at least 8"
(204mm) between the top of the sterilizer and any overhang-
ing cabinet above it. Overhangs should not project more than
8" (204mm) over the rear of the sterilizer.
Surroundings
If the sterilizer will be operated continuously, locate it in an
area where its steam emissions will not damage equipment or
materials.
Unpacking
Remove the sterilizer carefully and inspect it for any shipping
damage. Do not throw away packing materials until you
inspect the unit.
1. Turn the door handle counterclockwise until it is
completely loose and move the locking mechanism
to the left. Pull on the latch release lever built into
the left side of the sterilizer door and carefully
open the sterilizer door.
2. Remove all packing materials and accessories
from the chamber.
3. Remove the trays and rack assembly from the
chamber.
Caution
The surface beneath the sterilizer
could reach 100°F (38°C).

17
4. Check for any foreign material in the chamber.
Wipe clean with a damp, lint-free cloth if neces-
sary.
Electrical Connections
We recommend that you use a separate (dedicated) circuit
for this sterilizer. Ensure that the circuit is rated for the load.
(See Electrical Specifications.)
1. Connect power cord to power entry module on
back of unit.
2. Plug power cord into a grounded outlet of the
appropriate voltage and load rating.
Optional Printer
See section "Optional Printer" for installation, startup and
operation.
ISTALLATIO
Warning
Connect only to an electrical cir-
cuit of the appropriate voltage and
load rating.

18
Installation Instructions
1. To connect the non-recirculating water accessory
to the back of the sterilizer.
a. Unplug the sterilizer power cord. Allow the unit to
cool to room temperature.
b. Move the sterilizer to gain access to the rear of
the unit.
c. Unscrew the cap from the nonrecirculating dis-
charge port of the sterilizer (located on the rear of
the sterilizer).
d. Attach the discharge hose from the non-recircu-
lating discharge port.
e. Tighten the nut finger tight plus a quarter turn with
a wrench.
f. Attach the other end of the discharge hose to the
fitting on the lower left (rear) of the non-recirculat-
ing cooling tank. Follow the same procedure as
steps d and e above.
Caution
Be sure connection
nut is started straight.
Cross threading will
cause leaks and dam-
age the nut and fitting.
Improper Discharge Hose Connection
Discharge Hose Connection
Optional Non-Recirculating Tank
Cap
Removing Cap
Tighten nut fin-
ger tight plus 1/4
turn with
wrench. After discharge
hose assembly
from cooling tank to
non-recirculating
discharge port.
1/4 turn
NOTE: If you did not purchase an optional non-recirculation
tank, please proceed to Altitude Adjustment

19
2. Install the cap removed in step c. To the fitting
located in the reservoir. See Cap Replacement
3. Fill the cooling tank with distilled or deionized
water until the water begins to overflow from the
cooling tank into the collection bottle (or into the
drain if the overflow tube is installed).
4. Plug in the power cord.
Warning
Non-recirculating option must be installed
before proceeding.
Fi ing Coo ing Tank
Caution
The non-recirculating tank (cooling tank)
must be connected to the sterilizer before
filling with distilled or deionized water.
Caution
Do not operate sterilizer unless the non-recirculating
tank is filled with distilled or deionized water and
attached to the sterilizer.
Full mark
Collection Bottle
Fill with distilled or
deionized water until
it overflows into the
collection bottle
(approx. 3 gal.)
Optional
Overflow Drain
Remove Cap
Cap Rep acement
OPTIO AL O -RECIRCULATI G TA K

20
Altitude Adjustment
For proper operation, the sterilizer program accounts for the
altitude in controlling certain functions. The sterilizer is
shipped with a factory-set altitude value suitable for all alti-
tudes up to an altitude of 1000 feet above sea level. If your
altitude is above 1000 feet above sea level, you will need to
enter a new value for the altitude adjustment. To change the
altitude adjustment value:
1. At the "Select Cycle" screen, press the "Select"
key and then the up arrow key. The sterilizer will
display a "Configuration Info" screen, then it will
automatically change to displaying the "Change
Time" screen.
2. At the "Change Time" screen, press the "Select"
key and then the "Liquids" key.
3. At the "Altitude Adjustment" screen, press the up
arrow to select "Yes".
4. At the "Current Altitude" screen, press the up and
down arrows to set the value for your location's
altitude to the nearest one hundred feet.
5. After you have set your altitude value, press the
"Start" key to return to the "Select Cycle" screen.