Yamato SM201 User manual

AUTOCLAVE
High Pressure Steam Sterilizer
Models SM201/301/311/501/511
Instruction Manual
First Edition
● Thank you for choosing SM Series sterilizers from
Yamato Scientific Co., Ltd.
● For proper equipment operation, please read this
instruction manual thoroughly before use. Always
keep equipment documentation safe and close at
hand for convenient future reference.
Warning : Read instruction manual warnings
and cautions carefully and
completely before proceeding.
Yamato Scientific America, Inc.
Printed on recycled paper

Contents
1. SAFETY PRECAUTIONS...................................................................................................................... 1
Explanation of Symbols ...................................................................................................................... 1
Symbol Glossary................................................................................................................................. 2
Warning & Cautions............................................................................................................................ 3
2. PRE-OPERATION PROCEDURES....................................................................................................... 5
Installation Procedures ....................................................................................................................... 5
Installation Precautions..................................................................................................................... 12
3. COMPONENT NAMES AND FUNCTIONS......................................................................................... 14
Main Unit Overview 1........................................................................................................................ 14
Main Unit Overview 2........................................................................................................................ 15
Main Unit Overview 3........................................................................................................................ 16
Plumbing System.............................................................................................................................. 17
Control Panel .................................................................................................................................... 18
4. OPERATION PROCEDURE................................................................................................................ 19
Mode & Function Flow...................................................................................................................... 19
Mode Key Overview.......................................................................................................................... 20
Display Symbol Glossary.................................................................................................................. 20
Time & Temperature Settings........................................................................................................... 21
Setting Alert Tone ............................................................................................................................. 22
Sterilize.............................................................................................................................................. 23
Sterilize & Dry ................................................................................................................................... 26
Other Functions................................................................................................................................. 27
5. HANDLING PRECAUTIONS................................................................................................................ 29
6. MAINTENANCE PROCEDURE........................................................................................................... 30
Inspection & Maintenance................................................................................................................. 30
7. EXTENDED STORAGE & DISPOSAL ................................................................................................ 32
ExtendedStorage/UnitDisposal.......................................................................................................... 32
Disposal Considerations................................................................................................................... 32
8. TROUBLESHOOTING......................................................................................................................... 33
Error Code Guide.............................................................................................................................. 33
Troubleshooting Guide...................................................................................................................... 34
9. SERVICE & REPAIR............................................................................................................................ 35
10. SPECIFICATIONS ............................................................................................................................. 36
11. WIRING DIAGRAM............................................................................................................................ 38
SM201............................................................................................................................................... 38
SM301/501........................................................................................................................................ 38
SM311/511........................................................................................................................................ 39
12. LIST OF HAZARDOUS SUBSTANCES ............................................................................................ 40
13. REPLACEMENT PARTS LIST........................................................................................................... 41

1
1. SAFETY PRECAUTIONS
Explanation of Symbols
A Word Regarding Symbols
Various symbols are provided throughout this text and on equipment
to
ensure safe operation.
Failure to comprehend the operational hazards and
risks associated with these symbols may lead to adverse results as
explained
below. Be
come thoroughly familiar with all symbols and their meanings by
carefully reading the following text regarding symbols before proceeding.
Warning
Caution
Signifies a situation which may
result in minor injury (Note
2
)
and/or property damage (Note 3)
(Note 1)
Serious injury is defined as bodily wounds, electrocution, bone
breaks/fractures or poisoning, which may cause debilitation requiring
extended hospitalization and/or outpatient treatment.
(Note 2)
Minor injury is defined as bodily wounds or electrocution, which will not
require extended hospitalization or outpatient treatment.
(Note 3) Property damage is defined as damage to facilities, eq
uipment, buildings or
other property. （Note 1 ）Serious injury is defined as bodily wounds
,
Symbol Meanings
Signifies warning or caution.
Specific explanation will follow symbol.
Signifies restriction.
Specific restrictions will follow symbol.
Signifies an action or actions which operator must undertake.
Specific instructions will follow symbol.
Signifies a situation which may result in
serious
injury or death (Note 1)

2
1. SAFETY PRECAUTIONS
Symbol Glossary
Warning
General Warning
Danger!: High
Voltage Danger!: Extremely Hot Danger!: Moving Parts Danger!: Blast Hazard
Caution
General Caution
Caution:
Electrical Shock! Caution: Burn Hazard!
Caution: Do Not
Heat Without
Water!
Caution: May
Leak Water!
Caution: Water
Only Caution: Toxic Chemicals
Restriction
General
Restriction No Open Flame Do Not Disassemble Do Not Touch
Action
General Action
Required Connect Ground Wire Level Installation Required DisconnectPower Inspect Regularly

3
1. SAFETY PRECAUTIONS
Warning & Cautions
Warning
Never operate equipment near combustible gases/fumes.
Do not install or operate SM series unit near flammable or explosive gases/fumes. Unit is NOT fire
or blast resistant. Negligent use could cause a fire/explosion. See “List of Hazardous Substances”
(P.40).
Always ground equipment.
Always ground this unit properly to avoid electric shock.
DO NOT operate equipment when abnormalities are detected.
If smoke or unusual odors begin emitting from unit, or if any other abnormalities are detected,
terminate operation immediately, turn off main power switch (Moldedcase circuit Breaker – “MCB”)
and disconnect power cable. Continued operation under such conditions may result in fire or
electric shock.
DO NOT operate with bundled or tangled power cable.
Operating unit with the power cable bundled or otherwise tangled, may cause power cable to
overheat and/or catch fire.
DO NOT damage power cable.
Damaging the power cable by forcibly bending, pulling or twisting may cause fire or electric shock to
the operator.
NEVER disassemble or modify equipment.
Attempting to dismantle or modify unit in any way, may cause malfunction, fire or electric shock.
DO NOT insert multiple power cables into a single outlet.
Inserting multiple cords into a single outlet, using branch outlets or extension cords, may cause
power cable to overheat and/or catch fire. Other issues may include a drop in voltage, which may
affect performance, resulting in failure to control or maintain proper temperatures.
DO NOT touch or block exhaust port
The exhaust port located on right side of unit emits steam during operation and becomes extremely
hot. Do not put hands or face near exhaust port and do not attempt to block or obstruct it in any way.
Equipment damage, explosion or personal injury may result.
Caution
DO NOT operate equipment during thunderstorm.
In the event of a thunderstorm, terminate operation and turn off main power switch (MCB)
immediately. A direct lightning strike may cause damage to equipment, or result in fire or electric
shock.

4
1. SAFETY PRECAUTIONS
Warning & Cautions
Equipment under pressure.
DO NOT open unit lid until pressure gauge reads “0” (zero) psi. Opening while
pressurized will allow high temperature, high pressure steam to abruptly
escape chamber, possibly causing serious burns or other personal injury.
When opening unit, always confirm pressure gauge reads “0” (zero) psi, then
open cautiously, keeping hands and face away from chamber opening.
Likewise, opening drain valve while unit is pressurized will cause the same
results as above. DO NOT open drain valve until pressure gauge reads “0”
(zero) psi.
Drain bottle.
The drain bottle, located behind the front panel of SM units contains hot water following an
operation run. Do not touch or remove drain bottle while water is still hot. Serious burns or other
personal injury may result. Wait until bottle cools before attempting to remove or drain.
Avoid hot surface areas
The lid, bottom plate and other areas surrounding the chamber are very hot following operation. To
avoid being burned, do not touch these surface areas with bare fingers or hands. Always wear
gloves and other protective gear when removing process loads.
Heat vents.
Vents located on the side and rear panels of SM unit dispell heat and steam during operation. Keep
away from these vents while unit is in operation, to avoid being burned, and do not obstruct or
attempt to block these vents in any way. Equipment malfunction or damage my result, possibly
causing injury.
Pressure relief button.
When using the pressure relief button, located on the the side panel of SM unit, be sure there is no
one near the exhaust port. High temperature, high pressure steam is expelled, which could cause
burns or scalding.
DO NOT operate without water.
When sterilizer water heaters are run with low or no water, and exposed to air while heated,
they quickly degrade and become damaged.
Confirm that chamber has been filled to the proper level with water before operating.
(See P.10)

5
2. PRE-OPERATION PROCEDURES
Installation Procedures
Warning
1. Choose an appropriate installation site.
● Do not install SM unit:
・ where flammable or corrosive
gases/fumes will be generated.
・ where external temperature will exceed
35ºC, will fall below 5ºC or will
fluctuate.
・ in excessively humid or dusty locations.
・ where there is constant vibration.
・ where power supply is erratic.
・ in direct sunlight or outdoors
Install SM unit in a location with sufficient
space, and venilation as specified as below.
2. Install in a location free of flammables and explosives.
● Never install near flammables or
explosives. SM unit is NOT fire or blast
resistant. Simply switching the main
power switch (MCB) “ON” or “OFF” can
produce a spark, which can relay during
operation, causing a fire or explosion
when near flammable or explosive fluids,
chemicals or gases/fumes.
See “List of Hazardous Substances”
(P.40).
3. DO NOT install under low ceilings.
SM units emit a substantial amount of
steam when opened, which can cause
condensation build-up on/in objects above.
Do not install or place unit in areas where
there are objects immediately overhead,
especially light or alarm fixures. A short
circuit or fire may result.

6
2. PRE-OPERATION PROCEDURES
Installation Procedures
6
.
Never disassemble or modify.
7
.
In
stall on
a
level surface
.
Attempting to disassemble or modifiy this
unit in any way may result in malfunction,
fire or electric shock.
In order to keep water inside the unit
level, be sure to install/place unit on a
level and even surface. If water is not
level, the heater may be exposed,
causing operation to be terminated and
may result in damage to the heater.
Approximate unit weight:
SM201: approx.65kg /SM301,311: approx.80kg/SM501,511: approx.85kg
Handle with care. Transportation and installation should always be performed by two or more
people
.
8. Lock casters.
SM units come equipped with locks on front
casters. Once unit is positioned, be sure to
lock casters in place to stabilize unit and to
keep it from rolling while in operation.
9. Ground wire MUST be connected properly.
･ Confirm that unit is properly grounded to avoid electric shock and equipment damage. Contact a
local dealer, certified electrician, or Yamato Sales office for local electrical requirements.
･C onnect round terminals securely to facility terminal or to an appropriate connector.
SM201
SM301/311/501/511
Never connect ground wire to gas lines, water pipes, telephone grounding lines or lightening
rods. Doing so may result in fire or electrical shock.
Lock Unlock
Grounded Outlet
Plug
Grounding Prong
3(three) Round Terminal for M5 screws
Green (to facility ground terminal)
Black (to facility terminal)
White (to facility terminal)

7
2. PRE-OPERATION PROCEDURES
Installation Procedures
Warning
10. Connect to adequate power source.
Be sure unit is connected to a sufficiently
rated power source (see table to right).
Type Power Source Capacity
SM201 AC115V
single-phase 13A or more
SM301 AC115V
single-phase 15A or more
SM311 AC220V
single-phase 9.5A or more
SM501 AC115V
single-phase 15A or more
SM511 AC220V
single-phase 9.5A or more
11. Observe wire color designation.
Confim that the facility main breaker is OFF before
connecting the round terminals from the power cable. No
power plugs or connectors of any kind are included with
CF series units. Where required, purchase an appropriate
plug and properly connect using the round terminals (see
table to right).
Wire color Facility terminal
Black Live side
White Neutral side
Green Ground
12. Connect power cable.
Confirm main power switch is turned off prior to connecting the power cord. SM311 and 511 models
do not include plugs. Select a power connection device (i.e. plug) appriate to rating and power source.
13. Install drain filter
Be sure filter is installled prior to operation.
14. Install heater baffle
The heater baffle supports process load in chamber
and protects heater 1 and sensor 2. Do not attempt to
operate unit without installing heater baffle.
Bottom Plate
(at a level)

8
2. PRE-OPERATION PROCEDURES
Installation Procedures
15. Close the drain valve.
Be sure drain valve is closed prior to operation.
Forgetting to close this valve or leaving it
partially open will cause water to leak from
chamber, resulting in equipment damage from
overheating or fire.
16. Fill drain bottle to proper level.
Fill the drain bottle with 1500cc of water to
cool the steaming hot water that is
pressure drained from the chamber into
the drain bottle before unit enters the
sterilization and drying process. Do not
overfill the bottle or it may overflow and
cause a short circuit or fire, resulting in
equipment damage and/or serious injury.
Observe the 1500cc fill limit.
OPEN
C

9
2. PRE-OPERATION PROCEDURES
Installation Procedures
17. Install drain bottle.
For the safety of equipment and operators, SM series units feature a safety switch, which does not
allow the the sterilizer to run without the drain bottle installed. Always be sure the drain bottle is
installed before each operation. Do not attempt to operate unit without the bottle installed and do not
attempt to modify or remove the drain bottle safety switch.
① Open the front panel door. The display will
flash , indicating drain bottle is not
installed.
② Insert the end of the drain hose, with silencer
attached, into the drain bottle containing
1500cc of water.
③While lifting the bottle into place, insert the
drain hose the rest of the way into the bottle.
④Once the bottle is in place, the safety switch is
depressed, allowing the sterilizer to be run.
Plug
Silencer
Exhaust Hose
Micro Switch
Exhaust Hose
Silencer

10
2. PRE-OPERATION PROCEDURES
Installation Procedures
18. Add water to chamber.
Using the heater baffle as a gauge, add water to
the chamber.
An inadequate amount of water will result in
sterilization process interruption. Confirm water
level before each operation run and be sure to
add water before level reaches the lower limit.
SEE TABLE ON RIGHT FOR CHAMBER WATER CAPACITIES. USING MORE THAN
THE MAXIMUM CAPACITY WILL RESULT
IN HOT WATER OVERFLOWING FROM
THE DRAIN BOTTLE.
Requirement
SM201 1900～2000ml
SM301 2800～3000ml
SM311 2800～3000ml
SM501 2800～3000ml
SM511 2800～3000ml
19. Use distilled water in chamber
Well water and tap water is not recommended. To prevent mineral deposits from forming and to
protect chamber components from corrosion, use distilled water in the chamber.
20. Place sterilization load in chamber.
Place process load into basket and insert
basket into chamber. Do not block the exhaust
port. Always use basket for process load.
21. Close front panel door before operation.
Be sure that the front panel door of sterilizer is closed before operation. If door is left open, the drain
bottle may fall out and spill, possibly causing a short circuit or fire, resulting in equipment damage
and/or injury. Likewise, do not open the front panel door during operation.
Upper Limit Lower Limit
Exhaust Port

11
2. PRE-OPERATION PROCEDURES
Installation Procedures
22. Close lid.
Rotate lid pivot arm to the right until it interlocks
with stop block and cannot be rotated further.
Turn handle clockwise in 1/4-1/2 turns until lid is
sealed securely. Do not overtighten. If lid is not
closed completely, steam will escape from the
chamber and contents will not be sterilized
properly. Be sure that end of pivot arm is
completely inserted into stop block and that lid
has a good seal.
23. Position the condensation trap.
Place the condensation trap cup into the
magnetic holder and position under the steam
condensation outlet, to catch condensation
buildup so it does not drip onto the floor. See
illustration to the right.
CLOSE
Lid
Pivot Arm
Handle
Stop Block

12
2. PRE-OPERATION PROCEDURES
Installation Precautions
1. Opening lid.
Before opening unit lid, be sure that the pressure
gauge reads “0 psi". Then, proceed to open
slowly. If lid is opened while unit is still under
pressure, hot steam will abruptly escape chamber,
possibly resulting in burns or other serious
personal injury, caused by sudden reflexive
movements.
2. Draining sterilization chamber.
Water in chamber is very hot following operation
runs. Allow water to cool sufficiently before
draining. Place a drain pan less than 2 inches
deep under the drain outlet or connect a drain
hose routed to an appropriate drain before
opening the drain valve.
Never drain water during operation. If drain
valve is opened while unit is pressurized, hot
water will spray out, possibly causing burns or
other serious injury.
3. Drain bottle view window.
Check the drain bottle level regularly by looking
through the view window, located on the front panel. If
water level is near the upper limit caution label, be
sure to drain some water before proceeding with any
further operations.
OPEN
Drain bottle level
viewer window
Upper limit
caution label

13
2. PRE-OPERATION PROCEDURES
Installation Precautions
4. Caution: HOT!
During and following operation, areas surrounding the
lid become very hot. Do not touch these areas.
◆ Areas in gray signify HOT surfaces, in
illustration to the right.
5. Chamber lid seal.
Any damage to or contaminants on the lid seal/chamber
flange (area shown in gray to the right) will allow steam to
escape, resulting in pressure loss and substandard
sterilization. Keep this surface clean and avoid letting
basket or other items come in contact with seal, when
loading or removing items from the chamber.
Overtightening lid may also result in premature seal
deterioration.
The chamber lid seal may deteriorate with time and use. If steam is found to be escaping and
chamber is loosing pressure during normal use, the lid seal may need to be replaced.
6. Control panel guard.
The control panel guard is designed to protect the
display/keypad. Do not use the panel guard to move
or reposition SM sterilizer unit.

14
3. COMPONENT NAMES AND FUNCTIONS
Main Unit Overview 1

15
3. COMPONENT NAMES AND FUNCTIONS
Main Unit Overview 2

16
3. COMPONENT NAMES AND FUNCTIONS
Main Unit Overview 3

17
3. COMPONENT NAMES AND FUNCTIONS
Plumbing System
Solenoid Exhaust Valve
Solenoid Drain Valve
Pressure Gauge
Safety
Valve
Silencer
Drain Bottle Heater 1 Drain Valve
Heater 2
Sensor 1
Sensor 2
Chamber