Yamato SM520 User manual

Vertical Pressure Steam Sterilizer
SM520/820
SM530/830
First Edition
Thank you for purchasing SM series vertical pressure steam steriizer of Yamato
Scientific.
To use this unit properly, read this "Instruction Manual" thoroughly before using
this unit.
Keep this instruction manual around this unit for referring at anytime.
WARNING!:
Carefully read and thoroughly understand the important warning items
described in this manual before using this unit.
Yamato Scientific America Inc.

Contents
1. Safety Precautions ................................................................. 1
Explanation.......................................................................... 1
Table of Illustrated Symbols ............................................................ 2
Warning・Caution .................................................................... 3
2. Before Using ...................................................................... 6
Installation precautions ................................................................ 6
Preparation before operation .......................................................... 10
3. Description and Function of Each Part.............................................. 16
Main unit (front·top·back) ............................................................. 16
Main unit (internal structure)........................................................... 17
Operation panel ..................................................................... 18
4. Operation Method................................................................. 19
Choose operation mode .............................................................. 19
Function list......................................................................... 20
Help function........................................................................ 22
User Set Function ................................................................... 23
Operation course (liquefy & retain temp.)................................................ 25
Operation course (sterilize & retain temp.)............................................... 34
Operation course (instrument sterilize).................................................. 43
Operation course (fluid sterilize) ....................................................... 49
Operation course (instrument dry)...................................................... 55
Operation course (sterilize & dry) ...................................................... 61
Shortcut function (preheating) ......................................................... 69
Shortcut function (memory) ........................................................... 72
Shortcut function (schedule)........................................................... 76
Shortcut function (initial setting value) .................................................. 81
Shortcut function (optional connector) .................................................. 82
External Output Terminal (optional)..................................................... 83
5. Handling Precautions ............................................................. 85
6. Maintenance Method .............................................................. 88
Daily Inspection and Maintenance...................................................... 88
7. Long storage and disposal......................................................... 89
When not using this unit for long term / When disposing................................... 89
Notes about disposal................................................................. 89
8. In the Event of Failure ............................................................. 90
Safety Device and Error Code ......................................................... 90
Trouble Shooting .................................................................... 92
9. After-sales Service and Warranty ................................................... 93
When need repair ................................................................... 93
10. Specification .................................................................... 94
11. Wiring Diagram .................................................................. 96
12. Piping Diagram .................................................................. 98
13. Replacement Parts Table ......................................................... 99
14. List of Dangerous Substances.................................................... 101

15. Installation Standard Manual ..................................................... 102
16. Maintenance and Replacement ................................................... 103
Pressure gauge and safety valve ..................................................... 103
17. Regular Spot Check............................................................. 104
Regular self-checking of small pressure container ....................................... 104

1
1. Safety Precautions
Explanation
MEANING OF ILLUSTRATED SYMBOLS
Varioussymbols are used in thissafety manual in order to use the unit without
danger of injury and damage of the unit. A list of problems caused by ignoring
the warningsand improper handling isdivided asshown below.Be sure that you
understand the warningsand cautionsin this manual before operating the unit.
WARNING! If the warning is ignored, there is the danger of a problem that
may cause a serious accident or even fatality.
CAUTION! If the caution is ignored, there is the danger of a problem that may
cause injury/damage to property or the unit itself.
Meaning of Symbols
This symbol indicates items that urge the warning (including the caution).
A detailed warning message is shown adjacent to the symbol.
This symbol indicates items that are strictly prohibited.
A detailed message is shown adjacent to the symbol with specific actions not to
perform.
This symbol indicates items that should be always performed.
A detailed message with instructions is shown adjacent to the symbol.
Illustrated Symbols

2
1. Safety Precautions
Table of Illustrated Symbols
Warning
Warning,
high voltage
Warning,
high temperature
Warning,
drive train
Warning,
explosive
Caution
Caution,
generally
Caution,
electrical shock
Caution,
scald
Caution,
no load heating
Caution,
not to drench
Caution,
water only
Caution,
deadly poison
Prohibit
Prohibit,
generally
Prohibit,
inflammable
Prohibit,
to disassemble
Prohibit,
to touch
Compulsion
Compulsion,
generally
Compulsion,
connect to the
grounding
terminal
Compulsion,
install on a flat
surface
Compulsion,
disconnectthe
powerplug
Compulsion,
periodical
inspection

3
1. Safety Precautions
Warning・Caution
Warning
Do not use this unit in an area where there is flammable or explosive gas
Never use this unit in an area where there is flammable or explosive gas. This unit is not
explosion-proof. An arc may be generated when the power switch is turned on or off, and
fire/explosion may result. (Refer to page 104—14. List of Dangerous Substances)
Always ground this unit
Always ground this unit on the power equipment side in order to avoid electrical shock due to a
power surge.
If a problem omlurs
If smoke or strange odor should come out of this unit for some reason, turn off the circuit breaker
right away, and then disconnect the power plug or power terminal. Immediately contact a service
technician for inspection. If this procedure is not followed, fire or electrical shock may result. Never
perform repair work yourself, since it is dangerous and not recommended.
Do not use the power cord if it is bundled or tangled
Do not use the power cord if it is bundled or tangled. If it is used in this manner, it can overheat and
fire may be caused.
Do not process, bend, wring, or stretch the power cord forcibly
Do not process, bend, wring, or stretch the power cord forcibly. Fire or electrical shock may result.
Substances that can not be used
Never use explosive substances, flammable substances and substances that include explosive or
flammable ingredients in this unit. Explosion or fire may omlur. (Refer to page 104—14. List of
Dangerous Substances)
Do not disassemble or modify this unit
Do not disassemble or modify this unit. Fire or electrical shock or failure may be caused.
Do not get close to the vapor outlet / Do not block the outlet
The vapor outlet is provided on the left face of equipment. Do not put your hands or face close to the
outlet. Do not block the outlet.A burn injury or equipment failure may result in.

4
1. Safety Precautions
Warning・Caution
Caution
When opening the cover...
Make sure that the pressure of equipment has decreased to 0(zero) MPa before
opening the cover. Generally the cover does not open due to the safety lock
mechanism under the high pressure condition. The high-temperature and pressure
vapor blows out if the cover is forced open under high pressure, which may cause a
burn injury. A large amount of vapor blows out from inside of the chamber when
opening the cover just after the sterilizing operation has completed (when the
temperature inside the chamber is high). Do not put your hands and face close to the
cover.
When draining water...
Make sure that the pressure of equipment has decreased to 0(zero) MPa before draining the
sterilizing water. The hot water blows out if the valve is opened under high pressure. The sterilizing
water remains very hot just after the sterilizing operation has completed even the pressure reading is
0(zero) MPa. Drain the water after it is sufficiently cooled down.
Do not touch the drain bottle during operation
A drain bottle, which contains hot water during and just after operation, is placed inside the door in
the front face of equipment. To avoid a burn injury, remove the bottle after the water is sufficiently
cooled down. Do not open the door during the operation of equipment.
Make sure to drain the water when the water level comes to the seal
position
The hot water or vapor may blow out from the drain bottle if the equipment is operated with too much
drain water (water level above the seal position). (Refer to 15 of “Preparation before operation” in
Page 13 for details.)
Securely fix the silicon plug of the drain bottle
Securely fix the silicon plug when installing the drain bottle. The hot water or vapor may blow out
from the drain bottle if the equipment is operated with the plug loosen. (Refer to 5 of “Preparation
before operation” in Page Error! Bookmark not defined. for details.)
Do not touch the hot section
Some sections on the equipment such as the circumference of cover or drain bottle are very hot
during or just after the operation of equipment. Do not touch these sections to avoid burn injury.

5
1. Safety Precautions
Warning・Caution
Caution
When taking the sterile samples from the chamber...
Sufficiently remove the vapor inside the chamber before taking the sterile samples from the
chamber. Wear heat-resistant leather gloves to take them from the chamber to protect your
hands from high-temperature samples.
Do not touch the heat releasing outlet
Do not directly touch the heat releasing outlet located around the outer covering. The vapor may
blow out from the safety valve by an amlident during sterilizing operation. Do not block the outlet.
During a thunder storm
During a thunderstorm, turn off the power key immediately, then turn off the circuit breaker and the
main power. If this procedure is not followed, fire or electrical shock may be caused.
When power failure occurs...
The lock lever on the cover goes into locked state for safety reasons when the power is turned off
due to a power failure. The state is automatically cancelled when the power is turned on and the
pressure inside the equipment decreases.
Do not operate the equipment without supplying sufficient amount of water
Do not operate the equipment without supplying sufficient amount of water. The heater is exposed
to the open-air if the amount of water supplied is insufficient, which causes a deterioration or
breakage of equipment. Make sure before operation that the appropriate amount of water is
supplied inside the chamber. (Refer to 8 of “Preparation before operation” in Page 11 for details.)
Do not open the panel on the outer covering
Touching the interior portion of equipment may cause an electric shock, burn injury, fire disaster or
equipment failure.
Do not touch the power plug with a wet hand
An electric shock may result in.
Do not place your hand over the top board
The hand may be stuck in the cover and injured.
Put samples after preheating
Do not open the cover during preheating due to steam pressure in cylinder. Before putting
samples, press preheating kry, switch the heater to OFF state, waiting for 20 senconds, open the
cover after the cylinder pressure getting down.

6
2. Before Using
Installation precautions
1. Choose a proper place for installation
Do not install this unit in a place where:
Rough or dirty surface.
Flammable gas or corrosive gas is generated.
Ambient temperature 35C and above or 5C and below.
Atmosperic pressure without 70KPa～106KPa.
Altitude is higher than 3km.
Humidity is over 80%..
There is direct sunlight.
There is a constant vibration.
The power source is instable. (voltage fluctuation exceeds nominal voltage at ±10﹪)
Pollution degree is over class 2.
Install this unit on a stable place with the space as shown below.
30cm or more
15cm
or
more
15cm or more
15cm
or
more
Back side
Front side
2. Installation on horizontal surface
Use the equipment on the horizontal and firm place to keep the water inside the chamber
horizontal. If the equipment tilts and the heater appears from the water surface, the
temperature on the area above the water rises and a heater failure or operation stop due to
water level detector function may omlur.
The weight of main unit is approximately 110kg～140kg. Carry and install the equipment
carefully by four or more persons.

7
2. Before Using
Installation precautions
3. Before/after installing
It may cause injure to a person if this unit falls down or moves by the earthquake and the
impact. etc..To prevent, take measures that the unit cannot fall down, and not install at busy
place.
4. Do not install the equipment near alarm device
The equipment releases large amount of vapor when the cover is opened just after the
operation is completed. Amlordingly, do not install the equipment on the site over which
electrical equipment especially an alarm device is provided over it.
5. Ventilate the equipment sufficiently
Do not block the heat releasing outlets on the side face and back face of equipment during
operation. The temperature inside the equipment rises, which may cause the deterioration or
failure of equipment, amlident, or fire disaster.
6. Do not use this unit in an area where there is flammable or explosive gas
Never use this unit in an area where there is flammable or explosive gas. This unit is not
explosion-proof. An arc may be generated when the power switch is turned ON or OFF, and
fire/explosion may result.
To know about flammable or explosive gas, refer to page 104—14. List of Dangerous
Substances.
爆発性ガス
可燃性ガス