Yamato DKN302/402/602/612/812/912 Constant Temperature Oven Instruction manual

Forced Convection

Constant Temperature Drying Oven

Model

DKN 302/402/602

612/812/912

Instruction Manual

- First Edition z Thank you for purchasing "Forced Convection

Constant Temperature Drying Oven, DKN

Series" of Yamato Scientific Co., Ltd. z 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 Co. LTD.

Contents

Cautions in Using with Safety................................................................ 1

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•

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Explanation.................................................................................................................... 1

Table of Illustrated Symbols .......................................................................................... 2

Fundamental Matters of "WARNING!" and "CAUTION!" ............................................... 3

Before Using this unit ............................................................................. 4

•

Requirements for Installation......................................................................................... 4

Description and Function of Each Part ................................................. 9

•

•

•

Main Unit ....................................................................................................................... 9

Control Panel............................................................................................................... 12

Characters of the Controller ........................................................................................ 13

Operation Method ................................................................................. 14

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•

•

•

•

•

•

•

•

Operation Mode and Function List .............................................................................. 14

Operation Mode, Function Setting Key, and Characters ............................................. 16

Setting of Overheating Prevention Device .................................................................. 17

Fixed Temperature Operation...................................................................................... 18

Quick Auto Stop Operation .......................................................................................... 19

Auto Stop Operation .................................................................................................... 20

Auto Start Operation.................................................................................................... 22

Program Operation...................................................................................................... 24

Other Functions........................................................................................................... 31

Handling Precautions ........................................................................... 32

Maintenance Method............................................................................. 34

•

Daily Inspection and Maintenance .............................................................................. 34

Long storage and disposal................................................................... 35

•

When not using this unit for long term / When disposing ............................................ 35

In the Event of Failure… ....................................................................... 36

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Safety Device and Error Code..................................................................................... 36

Trouble Shooting ......................................................................................................... 37

After Service and Warranty .................................................................. 38

Specification .......................................................................................... 39

Wiring Diagram...................................................................................... 40

Replacement Parts Table ...................................................................... 44

Reference............................................................................................... 45

•

List of Dangerous Substances .................................................................................... 45

Explanation

Cautions in Using with Safety

MEANING OF ILLUSTRATED SYMBOLS

Illustrated Symbols

Various symbols are used in this safety manual in order to use the unit without danger of injury and damage of the unit. A list of problems caused by ignoring the warnings and improper handling is divided as shown below.Be sure that you understand the warnings and cautions in 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.

1

Table of Illustrated Symbols

Warning


Warning, generally

Caution

Warning, high voltage

Warning, high temperature

Warning, drive train

Warning, explosive

Caution, generally

Caution, electrical shock

Caution, scald

Caution, no road heating

Caution, not to drench

Caution, water only

Prohibit

Caution, deadly poison

Prohibit, generally

Compulsion

Prohibit, inflammable

Prohibit, to disassemble

Prohibit, to touch

Compulsion, generally

Compulsion, connect to the grounding terminal

Compulsion, install on a flat surface

Compulsion, disconnect the power plug

Compulsion, periodical inspection

2


Fundamental Matters of "WARNING!" and "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 45 "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 occurs

If smoke or strange odor should come out of this unit for some reason, turn off the power key right away, and then turn off the circuit breaker and the main power. 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 occur. (Refer to page 45 "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 touch high-temperature parts

The inside of the body or the door may become hot during and just after operation. It may cause burns.

CAUTION!

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.

3

Before Using this unit

Requirements for Installation

WARNING!

1. Always ground this unit

• The DKN302, DKN402and DKN602 types use a 100V power source.

• The DKN612, DKN812 and DKN912types use a single-phase 200V power source. Please consult your local electrical contractor for power connecting work.

• Be sure to connect the earth wire (the green cable of power cord) to the grounding conductor or ground terminal to prevent accidents caused by electric leakage.

• Do not connect the earth wire to gas or water pipes. If not, fire disaster may be caused.

• Do not connect the earth wire to the ground for telephone wire or lightning conductor. If not, fire disaster or electric shock may be caused.

• Do not use a branching receptacle, which may cause the heat generation.

2. 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 exceeds 35°C.

♦ Ambient temperature fluctuates violently.

♦ There is direct sunlight.

♦ There is excessive humidity and dust.

♦ There is a constant vibration.

• Install this unit on a stable place with the space as shown below.

The exhausted opening is provided at the top surface of unit for DKN302, DKN402, DKN602 and DKN612 types, and at the back surface for DKN812 and DKN912 types.

More than 30cm

More than

15cm

Main Unit

More than

15cm

Front side

4



3. Do not use this unit in an area where there is flammable or explosive gas

(Refer to page 45 "List of Dangerous Substances".)

• 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.

• Never use explosive substances, flammable substances and substances that include explosive or flammable ingredients in this unit.

Explosion or fire may occur.

Flammable substance

5



4. Do not modify

• Modification of this unit is strictly prohibited. This could cause a failure.

Do not modify

5. Installation on horizontal surface

• Set this unit to the flattest place. Setting this unit on rough or slope place could cause the vibration or noise, or cause the unexpectible trouble or malfunction.

To the flattest place

CAUTION!

6. Do not make an overload

• The withstand load of shelf is 15kg

（uniform load）Set the samples apart each other.

7. Do not set samples in close formation

• The temperature in furnace cannot be controlled if too much samples are set there. Make sure to use the shelf and set samples apart each other so as to make the free space of 30% or more to the furnace to acquire accuracy of temperature.

Samples

Shelf

15Kg

Make the free space of 30% or more

6



8. Choose a correct power distribution board or receptacle

• Choose a correct power distribution board or receptacle that meets the unit’s rated electric capacity.

Electric capacity: DKN302: 100V AC, 8.5A DKN612: 1φ200V AC, 8A

DKN402: 100V AC, 12.5A DKN812: 1φ200V AC, 12.5A

DKN602: 100V AC, 14A DKN912: 1φ200V AC, 15.5A

NOTE)

There could be the case that the unit does not run even after turning ON the power. Inspect whether the voltage of the main power is lowered than the specified value, or whether other device(s) uses the same power line of this unit. If the phenomena might be found, change the power line of this unit to the other power line. Please consult your dealer or a local electrical contractor for the connection of devices that use a single-phase 200V power source.

9. 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 to busy place.

• Touching the unit may cause a burn during and just after the operation. To prevent, take measures that putting up a notice of operating etc..

• Make sure to lock the caster for DKN812and DKN912 types.

10. Setting of the shelf and sample

• D The number of shelves attached varies depending on the type of product (2 to 8).One of them (two for DKN912 ) is previously fixed on the lowermost stand of bracket supporter with screws at factory shipment. Set the other shelves in place in furnace as necessary.

• One of the shelves is fixed on the lowermost stand of bracket supporter with screws at factory shipment.The temperature of current plate and its adjacence is usually higher than the setting temperature because a heater is provided under it, which may cause burn of sample or fire disaster if a sample is directly put on the current plate. To prevent such accidents, the shelf is fixed with screws as shown in the figure. Be sure to provide sufficient space between the current plate and sample in case the shelf must be removed due to the shape of sample. Do not put the sample directly on the current plate.

Bracket supporter

Bracket

M4 screw

Shelf

Never use explosive substances, flammable substances and substances that include explosive or flammable ingredients in this

Current plate

7



11. Handling of power code

• Do not entangle the power cord. This will cause overheating and possibly a fire.

• Do not bend or twist the power cord, or apply excessive tension to it. This may cause a fire and electrical shock.

• Do not lay the power cord under a desk or chair, and do not allow it to be pinched in order to prevent it from being damaged and to avoid a fire or electrical shock.

• Keep the power cord away from any heating equipment such as a room heater. The cord's insulation may melt and cause a fire or electrical shock.

• If the power cord becomes damaged (wiring exposed, breakage, etc.), immediately turn off the power at the rear of this unit and shut off the main supply power. Then contact your nearest dealer for replacement of the power cord. Leaving it may cause a fire or electrical shock.

• Connect the power plug to the receptacle which is supplied appropriate power and voltage.

8

Main Unit

DKN302/402/602/612

Front view

Door

Glass window

Description and Function of Each Part

Exhausted opening

Cable port

Production plate

Door handle

Rear view

Control panel Main switch

(Earth leakage breaker)

Power cord

DKN612のみ

9

Main Unit

DKN812

Front view

Door

Door handle

Rear view


Control panel

Main switch

(breaker)

Cable port

Production plate

Caster

Exhausted opening

Power cord

10

Main Unit

DKN912

Front view

Rear view


Control panel

Main switch


Cable port

Production plate

Door handle

Door

Caster

Exhausted opening

Power cord

11


Control Panel

⑧

⑨

⑩

⑪

⑫

⑬

⑭

⑮

⑯

POWER

⑰

③ ①

②

⑱

④

⑤

② ▲▼ Key：

⑩ AUTO STOP Lamp：

⑪ AUTO START Lamp：

⑭ Measurement Temperature

Display：

⑮ Setting Temperature

Display：

⑯ Overheating Prevention

Temperature Display：

⑦

⑥

Starts/stops the operation.

Uses for rising UP/lowering DOWN the setting value.

Settles the inputted value.

Chooses the fixed temperature operation.

Chooses the timer operation (Quick Auto Stop/Auto Stop/Auto

Start).

Chooses the program operation or program creation mode.

Uses for setting the overheating prevention temperature, calibration offset temperature, key lock function, or program repeat function.

Lights while the heater works.

Lights up when an error occurs. (Buzzer sounds simultaneously.)

Blinks while setting quick auto stop timer or auto stop timer.

Lights while quick auto stop timer or auto stop timer is running.

Blinks while setting auto start timer.

Lights while auto start timer is running.

Blinks while setting fixed temperature operation.

Lights while fixed temperature operation is running.

Blinks while setting program operation.

Lights while program operation is running.

Displays the measured temperature, setting character, alarm information.

Displays the setting temperature, setting value for timer mode, remaining time.

Displays the setting temperature for overheating prevention device.

Turns ON/OFF the main power. ⑰ Power Switch：


⑱ Electric leak testing button： Checks the breaker’s condition.

12


Characters of the Controller

The characters VS4 controller shows are as follows:

Character Identifier Name

FiX

Fixed Temperature

Setting Mode

Purpose

Used for starting the fixed temperature operation.

Sv

Temperature Setting

Used for setting the temperature.

AStP

AStr

Timer Setting Mode

Display

Timer Setting Mode

Display

Represents the setting of quick auto stop or auto stop operation.

Represents the setting of auto start operation.

tim

Time Setting Used for setting the time.

PrG3

Program Type

Used for choosing program type from 1 to 3.

(Refer to Page 24 " Program Operation".)

PAt

End

Sv-1

Program Pattern

Time Up

Program Temperature

Setting

Used for choosing program pattern. (Refer to

Page 24 " Program Operation".)

Displays when the timer operation is completed or while inputting number of program steps. (Refer to Page 24 " Program

Operation".)

Used for setting the temperature for each step in the program. (Sv-1 to Sv-30 is shown.)

t-1

Program Time Setting

Used for setting the time for each step in the program. (t-1 to t-30 is shown.)

PS-3

Pc-2 cAL oH

Step Number to be

Repeated

Repeating Times

Calibration Offset

Setting

Overheating Prevention

Setting

Used for choosing the step number to be repeated under the program operation with repeat function. (Refer to Page 28 " Use program repeat function".)

Used for setting the repeating times under the program operation with repeat function.

(Refer to Page 28 " Use program repeat function".)

Used for inputting the calibration offset temperature. (Refer to Page 31 "Other

Function".)

Used for setting temperature for overheating prevention device. (Refer to Page 17 "Setting of Overheating Prevention Device ".)

LocK

Key Lock

Locks the keys on control panel to protect from unnecessary operation. (Refer to Page

31 "Other Function".)

* Also refer to Page 16 "Operation Mode, Function Setting Key, and Characters".

13

Operation Method

Operation Mode and Function List

All the operation mode of this unit is as follows;

No. Name

1.

Fixed Temperature

Operation

Description

Pressing the FIXED TEMP key enters into the fixed temperature operation setting mode.

Pressing it again enters into the temperature setting mode.

The "▲▼" are used to set temperature.

Pressing the START/STOP key starts or stops operation.

Page

18

2.

Quick Auto Stop

Operation

3. Auto Stop Operation

4. Auto Start Operation

This operation is used to specify the period up to automatic stop during operation.

The period up to operation stop can be set by pressing the

TIMER key during fixed temperature operation.

The "▲▼" are used to set the time.

Pressing the START key starts the quick auto stop operation, activates the timer function and stops the operation automatically after specified period.

This operation is used to specify the automatic stop time in the fixed temperature operation.

Pressing the TIMER key displays "ASｔp".

The setting temperature "SV" can be set by pressing the

ENTER key.

The operation time "tim" can be set by pressing it again.

Pressing the START/STOP key starts the auto stop operation.

This operation is used to specify the period up to automatic start after power on.

Pressing the TIMER key displays "ASｔr".

The setting temperature "SV" can be set by pressing the

ENTER key.

The operation time "tim" can be set by pressing it again.

Pressing the START/STOP key starts the auto start operation.

This operation is used to change the temperature according to the setting temperature and time.

Pressing the PROGRAM key displays "PrG1".

Press it again to select the program mode.

Press the ENTER key to select the pattern "PA t".Press the

ENTER key to display "End". Input the number of patterns to be used.

Input the temperature and time of patterns "SV-n" and "t-n" respectively.

19

20

22

24

NOTE) This unit is impossible to be changed the mode during the operation. If the mode requires to be changed, stop the operation.

14


Operation Mode and Function List

The operation function of this unit is as follows;

No. Name

Auto overheating

prevention function

Description

This function is set to be automatically activated

(auto reset) when the temperature exceeds the setting temperature by 12℃.

Page

1.

3.

Overheating

prevention

function

Overheating

prevention device

2. Calibration offset function

Overheating prevention

temperature calibration

function

4. Recovery at power failure

5. Setting value locking

Though the device shares power source, display, and key input with the controller, it has independent temperature measurement circuit,

CPU, sensor and output circuit. Overheating prevention temperature can be set using the operation panel.

The unit stops operation when the device is activated. The unit starts operation again when the POWER switch is pressed again (manual reset).

17

This calibration offset function is for calibrating the difference occurred between the required in- furnace temperature and control temperature

(sensor temperature) of the controller. This unit can be calibrated toward either plus side or minus side of the whole temperature range.

The temperature of overheating prevention device is automatically corrected when the temperature of controller is collected.

The unit starts operation with the same condition as just before power failure if it occurs during operation. Press the START/STOP key to start the unit again.

This function locks the established operation status.

It can be set and cancelled with the SUBMENU key.

31

-

-

31

15


Operation Mode, Function Setting Key, and Characters

The operation mode setting and function setting use the key operation and characters show in the following figure.

16


Setting of Overheating Prevention Device

The unit has the overheating prevention device (manual reset) that consists of independent temperature measurement circuit, CPU, sensor and output circuit (it shares power source, display, and key input with the controller) in addition to the automatic overheating prevention function

(auto reset) in the controller.

Setting range/function

The unit has failsafe functions against overheating. One of them is built in the controller and previously set at factory shipment so to be automatically activated when the temperature exceeds the setting temperature of temperature controller by 12℃, where the heater repeats on and off.

The other is united with the controller, which can be set by operating the keys on the controller.

The setting range of latter is from 0℃ to max set temperature of main controller + 50℃.

In case the temperature in furnace exceeds the setting temperature of controller to reach to that of overheating prevention device, the circuit is shut off and "Er19" is displayed with blinking on the screen of controller with buzzer sound.

If the device is once activated,"Er19"continues to be displayed until the power is newly turned on.

Temperature setting procedure 1. Turn on the power (turn on the breaker in front)

• The default value is displayed for about four seconds after turning on the power. The screen then displays the initial setting. The current temperature in furnace, operation mode character and setting temperature of overheating prevention device are displayed on respective screens.

2. Set the temperature for overheating prevention

① Press the SUBMENU key.

② Press the " ▼ ▲ " several times to select the setting character of overheating prevention temperature "OH".

③ Press the ENTER key. The current setting temperature is displayed with blinking on the setting temperature screen.

Note: To prevent improper operation, set the value 10℃ or more over the setting temperature of controller.

④ Select the value using the " ▼ ▲ "and then press the

ENTER key. This completes the setting.

Notes:

• The standard setting temperature of device is "the maximum setting temperature of unit plus

20℃" or "setting temperature plus 20℃". If the unit performs improper operation, increase it

5℃ more.

• The setting range of overheating prevention device is from 0℃ to max set temperature of main controller + 50℃. Improper setting of temperature may cause inoperative of unit, malfunction of device, e.g. it is activated during increasing in temperature in furnace, or unexpected accidents such as fire disaster. To prevent such matters, set a proper value.

The temperature is set to 290℃ at factory shipment. Do not set the value larger than

it.

• In some case, the overheating prevention device is possible to be activated by mistake when its yield temperature is set to around room temperature.

• The purpose of overheating prevention device is to protect the unit from overheating. It does not intend to protect the samples, or to protect them from the accident caused by the use of explosive or inflammability.

17


Fixed Temperature Operation

Fixed temperature operation procedure

1. Turn on the power (turn on the breaker in front)

The default value is displayed for about four seconds after turning on the power. The screen then displays the initial setting. The current temperature in furnace, operation mode character and setting temperature of overheating prevention device are displayed on respective screens.

Measurement temperature screen:

Displays the current temperature in furnace.

Setting temperature screen:

Displays the operation mode character. (Refer to Page 13)

Overheating prevention screen:

Displays the setting temperature of overheating prevention device

2. Select the operation mode

• Press the FIXED TEMP key to display "FIX", which indicates the fixed temperature operation, on the center display screen.

3. Set the temperature

• Press the FIXED TEMP key again.

• The setting temperature screen displays the character "SV" which indicates the temperature setting. Also it displays the current setting temperature with blinking. The FIXED TEMP lamp blinks, too.

• Set the temperature by pressing the "▼▲".

4. Start operation

• Press the orange START/STOP key for about one second. The unit starts operation and the blinking FIXED TEMP lamp lights on.

5. Stop operation

• Press the orange START/STOP key for about one second. The unit stops operation and the FIXED TEMP lamp lights off. The screen returns to the initial setting screen.

To correct or check setting…

Press the FIXED TEMP key again to correct or check the setting.

Changing the setting temperature during operation is also possible by pressing the FIXED TEMP key.

18


Quick Auto Stop Operation

Quick auto stop

operation procedure

This operation is used to specify the period up to automatic stop, i.e., sets the auto stop timer during operation.

1. Set the time up to stop during fixed temperature operation

• Check that the FIXED TEMP lamp lights on and that the unit is under operation.

• Press the TIMER key.

• The measurement temperature display screen displays the character "tim", which indicates the timer setting. The setting temperature display screen displays the current setting time with blinking.

• Select the time by pressing the "▼▲".

Timer function:

• The maximum setting time is "999hours and 50 minutes ".

• The time can be set in increments of a minute under 99 hours and 59 minutes.

• It can be set in increment of ten minutes over 100 hours. continuously. Press them discontinuously when fine adjustment is needed.

2. Start timer operation

• Press the START/STOP key for one second after deciding the time.

• Timer operation starts with the FIXED TEMP and AUTO STOP lamps lighting on.

• The timer is activated at the point when the START/STOP key is pressed.

3. Stop/terminate timer operation

• The operation stops automatically at setting time.

• Buzzer continues to sound for about five minutes at operation stop.

• The setting temperature screen displays the character "End", which indicates termination of operation, with the FIXED TEMP and AUTO STOP lamps lighting on. Press the START/STOP key to terminate the timer operation mode. The screen returns to the initial setting screen.


Changing the setting temperature during operation is possible by pressing the FIXED TEMP key. Press the ENTER key after changing the setting.

Changing the setting temperature during operation is available by pressing the FIXED TEMP key. Press the ENTER key after changing the setting.

Press the ▼ key to display the setting temperature, operation mode and residual time on the setting temperature screen.

19


Auto Stop Operation

Auto stop operation

procedure

Timer function:

This operation is used to specify the automatic stop time in the fixed temperature operation.

1. Set stop time

① Press the TIMER key on the initial screen.

Press the TIMER key again. The setting temperature display screen displays the character "AstP", which indicates the auto stop operation, with blinking.

② Press the ENTER key.

The measurement temperature screen displays the character

"SV", which indicates the temperature setting. The setting temperature screen displays the current setting temperature with blinking. The AUTO STOP lamp blinks, too.

③ Set the temperature using the "▼▲".

④ Press the ENTER key again.

The measurement temperature display screen displays the character "tim", which indicates the timer setting. The setting temperature display screen displays the current setting time with blinking.

⑤ Set the time using the "▼▲".

• The maximum setting time is "999hours and 50 minutes ".





• Timer operation starts with the AUTO STOP lamp lighting on.

• The timer is activated at the point when the temperature in furnace (measurement temperature) reaches to the setting temperature.

20


Auto Stop Operation


• The operation stops automatically at setting time.


• The setting temperature screen displays the character "End", which indicates termination of operation, with the FIXED TEMP and AUTO STOP lamps lighting on. Press the START/STOP key to terminate the timer operation mode. The screen returns to the initial setting screen.


Changing the setting temperature or time during operation is possible by pressing the TIMER key. Use the "▼▲" to change the setting value. Press the ENTER key respectively after changing the setting.

Press the "▼" to display the setting temperature, operation mode and residual time on the setting temperature screen.

21


Auto Start Operation

Auto start operation

procedure

Timer function:

This operation is used to specify the period up to automatic start after power on.

1. Set start time

① Press the TIMER key on the initial screen.

Press the TIMER key again. The setting temperature display screen displays the character "Astr", which indicates the auto start operation, with blinking.

② Press the ENTER key.


"SV", which indicates the temperature setting. The setting temperature screen displays the current setting temperature with blinking. The AUTO START lamp blinks, too.

③ Set the temperature using the "▼▲".

④ Press the ENTER key again.

The measurement temperature display screen displays the character "tim", which indicates the timer setting. The setting temperature display screen displays the current setting time with blinking.

⑤ Set the time using the "▼▲".

• The maximum setting time is "999 hours and 50 minutes ".





• Timer operation starts with the AUTO START lamp lighting on.

22


Auto Start Operation


• The operation starts automatically at setting time.

• Press the START/STOP key for one second to stop or terminate operation. The screen returns to the initial setting screen.


Changing the setting temperature or time during operation is possible by pressing the TIMER key. Use the "▼▲" to change the setting value. Press the ENTER key respectively after changing the setting. They are not changeable after the unit starts operation. In this case, stop the operation by pressing the

START/STOP key, then set the value again.

Press the "▼" to display the setting temperature, operation mode and residual time on the setting temperature screen.

23


Program Operation

This operation is used to change the temperature according to the setting temperature and time.

Temp.

△ Start △ Stop Time

Program types

Six patterns of program types maximum can be input.

PrG2

PrG3

PAt1

PAt2

PAt1

PAt2

PAt3

2 program patterns using 15 steps maximum can be created.

3 program patterns using 10 steps maximum can be created.

Before inputting program

…

Input program patterns before program operation.

① Check the number of steps in a created program and their setting temperature/time. Use the program preparation sheet in pages 29 and 30 to check.

② Check the temperature rise/fall capability of the unit. Set the time within the capability above.

Suppose, for instance, that in the unit which has capability of increasing or decreasing temperature by 50℃ within 30 minutes, about 30 minutes is needed to increase or decrease temperature by 100℃ from current temperature

Repeat function:

Repeat function is useful in case the operation uses the program repeating the same program steps. Refer to page28 for the function.

③ Check if the controller has sufficient free pattern for the number of steps to be created. The steps, however, using the repeat function mentioned above are not counted.

Temperature fall/rise curve for DKN type

The temperature fall curve and temperature rise curve for DKN type are shown below.

The numeric value indicates the necessary time between temperatures (ex: about 15 minutes is needed to increase temperature from 100℃ to 150℃ for DKN602). Temperature stability time after reaching to the setting temperature is necessary to be added. Make sure to conduct a test run before setting the optimum time.

Condition: room temperature 23℃, no load, exhaust opening fully opened (unit: minute)

DKN812 DKN912

Rise Fall Rise Fall Rise Fall Rise Fall Rise Fall

260℃ 20 - 20 - 25 - 20 - 25 -

200℃ 15 20 20 20 20 20 15 20 25 30

150℃ 10 15 15 20 15 20 10 25 20 30

100℃ 10 20 15 30 15 30 10 40 20 60

50℃ 5 45 5 60 5 75 5 120 5 180

24



Program creation

The program pattern below is explained as an example.

1. Program pattern example

Temp.

200℃

100℃

0℃

8 9

50 25

180 100

Temp.(℃)

Time(min.)

100 100 150 150 200 200 50

25 30 15 90 25 180 150

POWER

← Repeat function →

The number of steps is not counted.

1. Turn on the power

• Turn on the power switch of the unit.

• The display on the controller lights on.

• The initial screen is displayed for about four seconds, then the measurement temperature (temperature in furnace) is displayed.

The initial screen displays the software version information, sensor used and setting temperature of overheating prevention device.

2. Select program mode/program pattern

① Press the PROGRAM key once.

The measurement temperature display screen displays the previous program mode.

Press the PROGRAM key again to display the next program mode.

② Select the mode and press the ENTER key.

• When PrG1 is selected, the measurement temperature display screen displays "End".

• When PrG2 is selected, the measurement temperature display screen displays the program pattern "PAt1". For the pattern of

PrG2, select "1" or "2" using the "▲▼". Press the ENTER key again. The measurement temperature display screen displays

"End".

• When PrG3 is selected, the measurement temperature display screen displays "PAt1". For the pattern of PrG3, select "1", "2" or "3" using the "▲▼". Press the ENTER key again. The measurement temperature display screen displays "End".

Any of PrG1. PrG2 or PrG3 can be selectable in the program example above, where nine steps maximum are used.

25



The example shown below explains the method of program registration using PrG3.

4. Register program

① Select PrG3 referring to 3 mentioned above..

② Input the number of steps, temperature and time for respective steps using the program creation sheet.

③ Press the ENTER key. The PAｔ１ is displayed with blinking.

("End" is displayed if PrG1 is selected. In this case, go to ⑥)

④ Select the unused pattern from among Pat1, Pat2 and Pat3 using the "

▲▼".

⑤ Press the ENTER key. "End" is displayed and the step number is also displayed with blinking.

"End" is a character which indicates the total step number to be used. "9" will be input here.

⑥ INPUT "9", which is the total step number to be used here, using the "▲

▼".

⑦ Press the ENTER key. The character "SV-1", which indicates the setting temperature of the first step, is displayed. The current setting temperature is also displayed with blinking.

⑧ Set the temperature of the first step using the "▲▼". "100" is input here to set the temperature to 100℃.

⑨ Press the ENTER key. The character "t-1", which indicates the setting time of the first step, is displayed. The current setting time is also displayed with blinking.

Before setting the time, check the temperature rise/fall capability of unit.

For example, about 90 minutes is needed to increase the temperature from room temperature to 260℃ for DKN602 type (60minutes for DKN812 type).

When the current temperature is supposed to be 25℃, it takes about 3 minutes to increase the temperature by 1℃, accordingly takes about 90 minute until it reaches to 260℃. Add an extra considering the temperature stability time.

The setting time of timer in respective steps is 999 hours and 50 minutes maximum.

⑩ After the time is set, press the ENTER key.

⑪ The character "SV-2", which indicates the setting temperature of the second step, is displayed. In the same way, input the temperature and time for respective steps using the program creation sheet.

The different method is necessary where program repeat function is used. In this case, press the SUBMENU key after setting the time (t-7 in the example) in the step where the repeat operation is to be used

(Step 7 in the example). This enters to the repeat function setting mode.

Follow the "Use program repeat function" in page 28 for the input method of program repeating function.

⑫ The screen returns to the initial setting screen after the setting of temperature and time in the final step is completed.

Verification run:

Make sure to check the setting temperature and time by operating the unit without load before performing actual run with samples.

26



5. Start program operation

• Press the START/STOP key for about one second. The program operation previously set starts.

• The PROGRAM lamp lights on and the setting temperature screen displays the step currently under operation.

Press the "▼" to check the setting temperature and residual time of step currently under operation on the setting temperature screen.

6. End program operation


• The measurement temperature screen displays the character

"END", which indicates the termination of program.

• Press the START/STOP key to return to the initial screen.

Timer function:

• The maximum setting time is "999 hours and 50 minutes".




Press the FIXED TEMP key to correct the created program or to check the setting value. The screen returns to the former one, where correction or check is possible.

Last screen is displayed when the FIXED TEMP key is once pressed.

Note: Correction or check should be made on the program setting screen.

Wait operation in program operation

The succeeding step does not start in case the measurement temperature does not reach to, or exceeds the setting temperature when a program goes to the next step in program operation. This unit, however, is previously set to carry out the next step if the measurement temperature is within ±3℃ of the setting temperature.

27



Use program repeat function

This section explains how to register the program repeat (repeating a program pattern) in program operation.

This section explains the registration procedure of program using repeat function in "4. Register program" above.

The procedure sets the step number to be repeated "PS-n" and repeating times "Pc-n"(n: step number)

① Press the SUBMENU key in stead of the ENTER key after setting the time (t-7 in the example) in the step where the repeat operation is to be used (Step 7 in the example). This enters to the repeat function setting mode.

② The measurement temperature screen displays the character

"PS-n", which indicates the step to be repeated in the program pattern. The measurement temperature screen indicates "PS-7" in the example because repeat function is used at the seventh step. The step number 1 to 7 can be input in the setting temperature display screen. Enter the number (1 in the example) using the "▲▼".

③ Press the SUBMENU key.


"Pc-n", which indicates the repeating times. Enter the value of repeating times （2 in the example）with the "▲▼".

④ The screen goes to that for the next step when the SUBMENU key is pressed again.

The screen to input the Sv-8 is displayed next in the example.


Correction of setting during the repeat setting mode is impossible.

To correct or check the setting, end the setting of step currently input. Press the FIXED TEMP key after the temperature setting screen for the next step appears. The screen returns to the former one and re-setting is possible.

Note: Correction or check should be made on the program setting screen.

28



Programming Preparation Form 1

(Please use this form by making copies)

Register with: PrG1 PrG2 PrG3 PAt1 PAt2 PAt3 No.

Date

Project Name

Programmer

Program Pattern

250℃

200℃

150℃

100℃

50℃

STEP

29


Step 17

Step 18

Step 19

Step 20

Step 21

Step 22

Step 23

Step 24

Step 25

Step 26

Step 27

Step 28

Step 29

Step 30

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Step 9

Step 10

Step 11

Step 12

Step 13

Step 14

Step 15

Step 16


Programming Preparation Form 2

(Please use this form by making copies)

Register with: PrG1 PrG2 PrG3 PAt1 PAt2 PAt3

Project Name

Input Value

Time (min.)

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

No.

Date

Programmer

Repeat Function

To/Times

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

/

30


Other Functions

Use calibration offset function

Calibration offset is a function which corrects the difference between the temperature in furnace and that of controller (sensor temperature) if arises. The function parallel corrects the difference either to the plus or minus side within the whole temperature range of unit. The function can be set or cancelled by the SUBMENU key.

Corrected temp. to plus side

Current temperature

Corrected temp. to minus side

① Start operation with the target setting temperature. Check the temperature in furnace (temperature of sample) with a thermograph after it is stabilized.

② Check the difference between the setting temperature and that in furnace (temperature of sample).

③ Press the SUBMENU key. Select the character "cAL", which indicates the calibration offset, using the "▲▼", and then press the ENTER key.

④ Input the difference using the "▲▼" and then press the ENTER key.

This completes the setting.

The setting range of offset correction temperature is +99℃ to plus side and

-99℃ to minus side respectively.

When it is set to the minus side, the temperature on the measurement temperature display screen falls by the setting temperature, while the temperature on furnace rises.

When it is set to the minus side, the temperature on the measurement temperature display screen rises by the setting temperature, while the temperature on furnace falls.

The unit has two-point correction function, which performs offset between low-temperature zone and high-temperature zone. Please consult our local branch office when carrying out validation of temperature controller.

Use lock function

This function locks the operation status previously set. The function can be set or cancelled by the SUBMENU key.

① Press the SUBMENU key. Select the character" "Lock", which indicates the lock of setting value, using the "▲▼", and then press the

ENTER key.

② The setting temperature screen displays "oFF". The setting value is locked when it is turned to "oｎ" using the "▲".

③ Press the SUBMENU key again to cancel the lock. Select the character" "Lock", which indicates the lock of setting value, using the "▲

▼", and then press the ENTER key. Select "oFF" with the "▼" and then press the ENTER key to cancel the function.

All keys other than the START/STOP and SUBMENU keys are lock when the lock function is on.

31

Handling Precautions

WARNING!

If a problem occurs

If smoke or strange odor should come out of this unit for some reason, turn off the power key right away, and then turn off the circuit breaker and the main power. 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.

Substances that cannot be used

Never use explosive substances, flammable substances and substances that include explosive or flammable ingredients in this unit. Explosion or fire may occur. (Refer to page45 "List of

Dangerous Substances".)

CAUTION!

Do not step on this unit

Do not step on this unit. It will cause injury if this unit fall down or break.

Do not put anything on this unit

Do not put anything on this unit. It will cause injury if fall.

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 open/close door…

Do not get close to the traveling range of door when opening or closing it. It may hit your hands or head and result in an injury.

Keep door close during operation.

• The heater is heated abnormally if the door is left opened during operation. Make sure to operate the unit with the door closed.

• Do not leave the door open after operation in order to cool down the samples quickly. The heat in furnace may cause deformation of control panel or breakdown of control devices.

Do not use corrosive sample

Stainless steel SUS304 is used for interior; however, it may be corroded by strong acid etc. And the door packing made of silicon rubber may be corroded by some kind of solvent, e.g. alkaline, oil, halogen etc. Do not use the sample includes those.

Use under proper temperature range

Operational temperature range of DKN302/402/602/612 is 10 to 260℃.

Operational temperature range of DKN812/912 is 10 to 210℃.

Never set the temperature out of that.

32

Handling Precautions

Setting of sample

Since the withstand load of the attached shelf plate is about 15kg per one plate, do not set heavier sample than 15kg. When setting several sample, set them as dispersed as possible.

Too much sample setting could cause the improper control of the temperature. For keeping the proper temperature, keep more than 30% space against whole size of the shelf plate, and set the sample.

Do not put sample on the internal base

If sample is put directly on the base, device performance will be disturbed. Furthermore, internal temperature will abnormally rise and it will cause trouble. Never put sample on the base. Fix the shelf on the bracket then set sample on it.

Set the shelf

Samples on the base

Recovering after power failure

When power is supplied after a power failure, the device automatically starts operation again with the same state as just before the power failure. It is danger that the device starts unattached operation after a power failure. We recommend for you to turn off the switch of this unit if a power failure occurs during operation.

Double stacking

Use the specified fittings included in the optional accessory for double stacking. Do not make direct double stacking.

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.

33

Maintenance Method

Daily Inspection and Maintenance

For the safety use of this unit, please perform the daily inspection and maintenance without fail.

Using the city water to this unit might attach dirt. Do inspect and maintain this point while performing daily inspection and maintenance.

WARNING!

• Disconnect the power cable from the power source when doing an inspection or maintenance unless needed.

• Perform the daily inspection and maintenance after returning the temperature of this unit to the normal one.

• Do not disassemble this unit.

CAUTION!

• Use a well-drained soft cloth to wipe dirt on this unit. Do not use benzene, thinner or cleanser for wiping. Do not scrub this unit. Deformation, deterioration or color change may result in.

Monthly maintenance

• Check the earth leakage breaker function.

1. Connect the power cord.

2. Turn the breaker on.

3. Push the red test switch by a ballpoint pen etc.

4. If there is no problem, the earth leakage breaker will be turned off.

For any questions, contact the dealer who you purchased this unit from, or the nearest sales division in our company.

34

Long storage and disposal

When not using this unit for long term / When disposing

CAUTION!

When not using this unit for long term…

• Turn off the power and disconnect the power cord.

WARNING!

When disposing…

• Keep out of reach of children.

• Remove the door and driving parts.

• Treat as large trash.

Environmental protection should be considered

We request you to disassemble this unit as possible and recycle the reusable parts considering to the environmental protection. The feature components of this unit and materials used are listed below.

Component Name Material

Exterior Parts

Outer covering Steel plate melamine resin coating

Glass wool

Foam silicon rubber

Heat insulation material

Door packing

Electrical Parts

Heater

Motor

Circuit boards

Power cord, Wiring

SUS pipe heater

Steel plate, Copper wire, resin coated wire and other

Board, Condenser, Transformer and other

Synthetic rubber or resin coated wiring materials

35

In the Event of Failure…

Safety Device and Error Code

This unit has an automatic diagnosis function built in the controller and safety devices independent of the controller. The table below shows the cause and the solution method when the safety device operates.

Error Code:

When an abnormal condition occurs, an error code appears and the alarm lamp lights in the controller, the buzzer sounds simultaneously. Record the error code and turn off the power of device immediately.

Safety Device Notify Cause/Solution

Sensor trouble detection

“ALARM” lamp lights on,

“Er.01” appears

• Temperature sensor is broken or disconnected.

• Make a call for service.

SSR short-circuit detection

Heater disconnecting detection

Memory error

Internal communication error

Overheating

Measurement temperature error












“----” appears

• Triac is in short-circuit


• Heater is disconnected.


• Failure in internal memory.


• Failure in internal communication or temperature inputting circuit.


• Overheating prevention device is in operation.

• Reset the power supply, and then adjust the setting temperature of the overheating protection device.

• If the state does not recover, make a call for service.

• Measurement value is out of display range.


36

In the Event of Failure…

Trouble Shooting

Before call us...

The device does not start when

turning on the power switch.

• Power plug is not connected to the receptacle correctly.

• Too much samples.

Temperature fluctuates during the operation.

• Wind from air conditioner directly blows.

• The change of ambient temperature is remarkable.

• Samples are too moist.

• The power supply voltage is lower than the proper value.

In the case if the error other than listed above occurred, turn off the power switch and primary power source immediately. Contact the shop of your purchase or nearest Yamato Scientific

Service Office.

37

After Service and Warranty

In Case of Request for Repair

If the failure occurs, stop the operation, turn OFF the power switch, and unplug the power plug.

Please contact the sales agency that this unit was purchased, or the Yamato Scientific's sales office.

< Check following items before contact >

◆ Model Name of Product

◆ Production Number

◆ Purchase Date

See the production plate attached to this unit.

◆ About Trouble (in detail as possible)

Minimum Retention Period of Performance Parts for Repair

The minimum retention period of performance parts for repair of this unit is 7 years after discontinuance of this unit.

The "performance part for repair" is the part that is required to maintain this unit.

38

Specification

DKN302 DKN912

Temperature control

range

Temperature

adjustment accuracy

Temperature

distribution accuracy

Temperature rise time

Temperature fall time

Heater

0 to 260℃ (Ambient temp.: 23℃, No load, Damper: full closed)

±1℃ (Middle of furnace, Set temp.: 210℃, Damper: full closed)

±2.5℃ (Set temp.: 210℃, Damper: full closed)

(Room temp. to 210℃)

Approx. 60min.

Approx.

75min.

(210 to 50℃)

Approx. 150min.

Approx.

160min.

Approx.

220min.

Iron-chrome heater SUS pipe heater

0.8kw 1.2kw 1.34kw 2.4kw 3kw

Temperature control

system

Setting system

Operation mode

Sensor K-thermocouple

Additional functions Lock function, Auto recovering after power failure, Calibration offset

Self-diagnostic functions

Failure of Sensor, heater, SSR, memory, internal communication, temperature inputting circuit, automatic overheating prevention device, overheating prevention device, measurement temperature

Safety device

External dimensions

(W×D×H mm)

PID control for heater output by microcomputer

Digital setting by menu key and up/down keys

Fixed temperature, Quick auto stop, Auto stop, Auto start, Program operation

Earth leakage breaker, Overheating prevention device

410×451×670 560×601×820 710×651×870 710×651×1675 1180×651×1683

Internal dimensions

(W×D×H mm)

Capacity

Door

300×300×300 450×450×450

Approx. 27L Approx. 90L

600×500×500 600×500×1000 1070×500×1000

Approx. 150L Approx. 300L Approx. 535L

Power supply

(50/60Hz)

Weight

Accessories

100V AC 200V AC single phase

8.5A 12.5A

(DKN602)

8A

(DKN612)

12.5A 15.5A

Approx. 35Kg Approx. 50Kg Approx. 65Kg Approx. 110Kg Approx. 190Kg

Shelf (withstand load: 15kg/one shelf)

×2 ×4 ×8

Instruction manual

The performance under the power supply condition of AC 100V and 200V are shown here.

The usable ambient temperature of the unit is from 5℃ to 35℃.

The temperature fall time here shows the reference value.

39

DKN302/402/602

ELB

AC100V

FM

TM1

1

2

H

3

4

Symbol Part name

ELB Earth leakage breaker

TM1 Terminal block

H Heater

X Main relay

FM Circulation fan

Wiring Diagram

X

1

・

2

・

3

CN5 CN8

1

18 1

CN1

CT

2

1

SSR

3

4

1

2

3

CN2

1

CN9

18

X

1

2

CN1

・

4

・

5

1

・

2

・

3

・

6

・

CN4

TB1

1

2

3

+

-

TB2

1

2

+

-

18

CN2

1

PIO

TH1

TH2

Symbol

CONT

PIO

TH2

CT

Part name

Control board

Display circuit board

Sensor for overheating prevention

Current transformer

40

DKN612

AC200V

Wiring Diagram

ELB

FM

TM1

1

2

H

3

4

Symbol Part name

ELB Earth leakage breaker

TM1 Terminal block

H Heater

X Main relay

FM Circulation fan

X

1

・

2

・

3

CN5 CN8

1

18 1

CN1

CT

2

1

SSR

3

4

1

2

3

CN2

1

CN9

18

X

1

2

CN1

・

4

・

5

1

・

2

・

3

・

6

・

CN4

TB1

1

2

3

+

-

TB2

1

2

+

-

18

CN2

1

PIO

TH1

TH2

Symbol

CONT

PIO

TH2

CT

Part name

Control board

Display circuit board


Current transformer

41

Wiring Diagram

DKN812

AC200V

ELB

H1 H2

FM

Symbol

ELB

Part name

Earth leakage breaker

TM1 Terminal block

H1/H2 Heater

X

FM

Main relay

Circulation fan

TM1

1

2

3

4

CT

X

2

1

SSR

3

4

X

1

2

3

CN5

1

CN8

18

18

CN1

1

1

2

CN1

1

CN9

18

1

2

3

CN2

3

4

5

6

1

2

CN4

TB1

1

2

3

+

-

+

-

CONT

18

CN2

1

PIO

TH1

TH2

Symbol

CONT

Part name

Control board

PIO Display circuit board

TH1 Sensor control

TH2

CT


Current transformer

42

Wiring Diagram

DKN912

AC200V

ELB

FM1 FM2

H1 H2

Symbol

ELB

Part name


TM1 Terminal block

H1/H2 Heater

X Main relay

FM1/FM2 Circulation fan

2

3

4

TM1

1

CT

X

2

1

SSR

3

4

X

1

2

3

CN5

1

CN8

18

18

CN1

1

1

1

2

CN1

CN9

18

1

2

3

CN2

TB1

1

2

3

1

4

5

2

3

6

CN4 TB2

1

2

CONT

+

-

+

-

18

CN2

1

PIO

TH1

TH2

Symbol

CONT

Part name

Control board

PIO Display circuit board

TH1 Sensor control

TH2 Sensor for overheating prevention

CT Current transformer

43

Replacement Parts Table

DKN302/402/602

Part Name

Sensor

VS4 PLANAR board

VS4 display circuit board

Tough card

Main relay

Power cord kit



Specification

LCK-M１-2000-Y K single

VS4

VS4

50mm

AHE1254 100V/120V

2.0sq 3p plug

For DKN302/402 BJS153

For DKN602 BJS203

Manufacturer Code No.

Yamato Scientific 1160030049




Matsushita 2050000019


Matushita

Matushita

2060050001

2060050002

Motor

Heater

DKN611/811/911

Part Name

Sensor

VS4 PLANAR board

VS4 display circuit board

Tough card

Main relay

IC8422YAMA 100V 10W

DKN302 SUS pipe heater 800W

DKN402 SUS pipe heater 1.2KW


Specification

LCK-M１-2000-Y K single

VS4

VS4

50mm

AHE1255 200V


Yamato Scientific LT00006024



Manufacturer Code No.





Matsushita 2050000044

Power cord


DKN612 2.0sq 3p

DKN812 2.0sq 3p

DKN912 3.5sq 3p

Yamato Scientific

Yamato Scientific

Yamato Scientific

DN105

DN105

2130010010

DKN612

BJS153 Matushita

DKN812 BJS203 Matushita 2060050002

DKN912 BJS203 Matushita 2060050002

Motor

Heater

DKN612 IC8422YAMAB 200V 10W




DKN812 SUS pipe heater 1.2KW×2

DKN912 SUS pipe heater 1.5KW×2







44

Reference

List of Dangerous Substances

Never use explosive substances, flammable substances and substances that include explosive or flammable ingredients in this unit.

EXPLOSIVE

Ethylene glycol dinitrate (nitro glycol), Glycerin trinitrate (nitroglycerine), Cellulose nitrate (nitrocellulose), and other explosive nitrate esters

EXPLOSIVE:

Trinitrobenzene, Trinitrotoluene, Trinitrophenol (picric acid), and other explosive nitro compounds

Acetyl hidroperoxide (peracetic acid), Methyl ethyl ketone peroxide, Benzyl peroxide, and other organic peroxides

FLAMMABLE

IGNITING:

Lithium (metal), Potassium (metal), Sodium (metal), Yellow phosphorus,

Phosphorus sulfide, Red phosphorus, Celluloid compounds, Calcium carbide,

Lime phosphate, Magnesium (powder), Aluminum (powder), Powder of metals other than magnesium and aluminum, Sodium hydrosulfite

OXIDIZING:

INFLAMMABLE

LIQUID:

Potassium chlorate, Sodium chlorate, Ammonium chlorate, and other chlorate

Potassium perchlorate, Sodium perchlorate, Ammonium perchlorate, and other perchlorate

Potassium peroxide, Sodium peroxide, Barium peroxide, and other inorganic peroxide

Potassium nitrate, Sodium nitrate, Ammonium nitrate, and other nitrate

Sodium chlorite and other chlorites

Calcium hypochlorite and other hypochlorites

Ethyl ether, Gasoline, Acetaldehyde, Propylene chloride, Carbon disulfide, and other flammable substances having a flash point of lower than -30℃

Normal hexane, ethylene oxide, acetone, benzene, methyl ethyl ketone, and other flammable substances having a flash point of -30℃ or higher but lower than 0℃

Methanol, Ethanol, Xylene, Pentyl acetate (amyl acetate), and other flammable substances having a flash point of 0℃ or higher but lower than 30℃

Kerosene, Light oil (gas oil), Oil of turpentine, Isopentyl alcohol (isoamyl alcohol),

Acetic acid, and other flammable substances having a flash point of 30℃ or higher but lower than 65℃

FLAMMABLE

GAS:

Hydrogen, Acetylene, Ethylene, Methane, Propane, Butane, and other flammable substances which assume a gaseous state at 15℃ and 1 atm

(Source: Appendix Table 1 of Article 6 of the Industrial Safety and Health Order in Japan)

45

Responsibility

Please follow the instructions in this document when using this unit. Yamato Scientific has no responsibility for the accidents or breakdown of device if it is used with a failure to comply.

Never conduct what this document forbids. Unexpected accidents or breakdown may result in.

Note

◆ The contents of this document may be changed in future without notice.

◆ Any books with missing pages or disorderly binding may be replaced.

Instruction Manual for

Forced Convection Constant Temperature Oven

Model DKN302/402/602/612/812/912

First Edition Nov. 1, 2004

46

Yamato Scientific Co., Ltd.

2-1-6 Nihonbashi Honcho, Chuo-ku,

Tokyo, 103-8432, Japan http://www.yamato-net.co.jp

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