Yamato Scientific DN410I User Manual

MECHANICAL INERT OVEN

Model: DN410I

Version 2

Yamato Scientific Co., LTD.

Congratulations on your selection of Yamato Scientific’s Mechanical Inert Oven! Please read these operating instructions, user notes and the warranty card thoroughly before the initial operation of your Mechanical Inert oven. This will ensure proper operating procedures and extended life for the unit. Please keep the operating instructions together with the warranty card for easy access whenever you need them.

Attention: Read the warnings in the operating instructions carefully to familiarize

yourself with the initial operation of your Mechanical Inert oven.

Depending on the extent and nature of danger, the warnings given in these operating instructions are classified into the following two categories by symbol.

To protect operators from accident - Negligence of this warning may result in a serious accident.

To protect the Mechanical Inert Oven from damage - Negligence of this warning may result in damage to the Mechanical Inert Oven.

This warning also gives you tips on performance that are useful in its operation and maintenance or indicates the common mistakes that operators often make.

TABLE OF CONTENTS

EXPLANATION OF PICTURE DISPLAY ...................................................................................................1

SAFETY PRECAUTIONS .............................................................................................................................2

NOTES TO USERS........................................................................................................................................4

I

DENTIFICATION OF PARTS ..............................................................................................................................4

Main unit.....................................................................................................................................................4

Control Panel ..............................................................................................................................................5

INSTALLATION .................................................................................................................................................7

I

NERT GAS INJECTION ......................................................................................................................................9

PRECAUTIONS IN HANDLING................................................................................................................10

OPERATING PROCEDURE .......................................................................................................................13

FIXED AUTO A P SWITCHING

TEMPERATURE OPERATION INSTRUCTIONS.......................................................................14

START OPERATION INSTRUCTIONS.........................................................................................15

UTO STOP OPERATION METHOD..................................................................................................................16

ROGRAMMED OPERATION METHOD .............................................................................................................18

FROM ONE OPERATION TO ANOTHER .........................................................................19

METHOD OF USING DISPLAY KEY........................................................................................................20

HOW TO USE THE MODE.........................................................................................................................21

C

ONTENT OF FUNCTION MENU.......................................................................................................................21

C

ALIBRATION OFFSET FUNCTION ..................................................................................................................22

Outline of Function ..................................................................................................................................22

Setting The Calibration Offset Function ................................................................................................23

SAFETY DEVICES AND ERROR CODES ................................................................................................24

P

URPOSES AND OPERATIONS OF SAFETY DEVICE AND COUNTER-MEASURES................................................24

INDEPENDENT

OVERHEAT PREVENTION .........................................................................................25

BEHAVIOR AFTER POWER RESTORATION .........................................................................................26

MAINTENANCE AND INSPECTION .......................................................................................................27

M

AINTENANCE PROCEDURE ..........................................................................................................................28

L

ONG STORAGE AND DISPOSAL......................................................................................................................28

AFTER SERVICE AND WARRANTY ........................................................................................................29

I

F A SERVICE CALL IS REQUIRED: ..................................................................................................................29

TROUBLESHOOTING................................................................................................................................30

SPECIFICATIONS ......................................................................................................................................31

WIRING DIAGRAM ....................................................................................................................................32

REPLACEMENT PARTS TABLE...............................................................................................................33

REFERENCE ...............................................................................................................................................34

HAZARDOUS L

IST OF SYMBOLS IN THE DISPLAY.................................................................................................................35

F

LOWCHART OF OPERATIONAL PROCEDURES................................................................................................36

MATERIAL..........................................................................................................................34

Run “MENU”.............................................................................................................................................36

Program “MODE” .....................................................................................................................................37

Flowchart for programming.....................................................................................................................38

Explanation of picture display

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.

If the warning is ignored, there is the danger of a problem that may cause a serious accident or even fatality.

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

Safety Precautions

WARNING

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

 Never use the unit in an area where there is flammable or explosive gas. The unit is not explosion-proof. An arc may be generated when the power switch is turned on or

off, and fire/explosion may result.

Always ground the unit.

 Always ground the unit on the power equipment side in order to avoid electrical shock due to a

power surge.

If a problem occurs, you should:

 If smoke or strange odor should come out of the unit for some reason, turn off the power key

right away, then turn off the earth leakage 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.

Do not put the power cord under the desk, chair, etc.,

 Do not put the power cord under the desk, chair, etc., or through an object. Fire or electrical

shock may be caused.

Do not run the power cord next to heating equipment such as a heater.

 Do not run the power cord next to heating equipment such as a heater. The cover of the cord

may melt and fire or electrical shock may result.

2

WARNING

Substances that can not be used.

 Never use explosive substances, flammable substances and substances that include explosive

or flammable ingredients in the unit. Explosion or fire may occur.

Do not disassemble or modify the unit.

 Do not reconfigure the unit. Fire or electrical shock may be caused.

Do not touch the door during or immediately after operation.

 Do not touch the door during or immediately after operation. Severe burning injury may be

caused due to the high temperature.

CAUTION

During a thunder storm . . .

 During a thunderstorm, turn off the power key immediately, then turn off the earth leakage

breaker and the main power. If this procedure is not followed, fire or electrical shock may be caused.

Periodic check of the safety component.

 The independent temperature over-rise prevention device is important safety component. Be

sure to inspect it periodically. (See chapter of INDEPENDENT OVERHEAT PREVENTION on page 25.)

3

Notes to Users

Identification of Parts

Main unit

Door handle

Independent overheat prevention

Control panel

Flowmeter

Gas injection port

Power switch (Earth leakage breaker)

Power cable

4

⑤

⑪

c

Control Panel

⑪f

⑪e

⑪

⑪b

⑪

⑯

⑫

⑨

④

⑮

⑧

⑩

⑥⑦

⑬

(1) POWER key: (2) MODE key: (3) DISPLAY key:

(4) MENU key:

(5) ENTER key: (6)/(7)(UP/DOWN) key: (8) ESCAPE key: (9) Main Display: It displays temperature measurements, set values (temperature, (10) Sub Display: It displays set temperature, remaining time, current hour and (11) Operation monitor: It indicates an operation mode.

a) (11) STANDBY lamp: b) (11) Temperature

pattern lamp:

c) (11) OVER lamp: d) (11) TROUBLE

indicator lamp:

Key to change over the controller from the standby mode to the operation mode or from the operation mode to the standby mode. Key to select a function from program input, edit, delete modes, hour/time setting, change-over mode, and other functions. Key to change-over the display content of the sub display (10). Display content is changed over to set temperature, remaining time, hour, execution segment No. Key to select the operation mode. Each mode of fixed temperature, auto-start, auto-stop and program operation can be selected. Key to determine the input value of set value (temperature, time, hour, etc.), selection mode, execution segment No. etc. Key to change set value (temperature, time, hour, etc.) and to choose a selection from various parameters on the function menu. Key to cancel the latest entry and recover the status that was valid prior to the making the latest selection.

time, hour, etc.), program information, error information, etc. execution segment No. etc. It flashes to indicate that the instrument is in the preoperational

standby mode. It illuminates to indicate the heat treatment process pattern executed by the controller with flashing light indicating the point currently in execution. It flashes to indicate the end of auto-stop or program operation. It blinks when an error is detected and displays the corresponding code for that particular problem.

5

⑭

②

①

③

e) (11)REMOTE operation

indicator lamp:

f) (11)KEY LOCK

indicator lamp:

(12) Operation menu

indicator lamp:

(13) Sub display menu

indicator lamp:

(14) HEAT ON indicator

lamp

(15) TIME indicator lamp:

(16) Independent

Temperature Overheating Prevention Device:

It illuminates when the instrument is put into remote operation (optional) and displays the word “REMOTE.” It illuminates to indicate that the operation panel key lock function is in operation. It illuminates to indicate the active operation mode in the operation menu. It illuminates to indicate the item (set temperature, remaining time, hour or execution segment) shown in the sub display. It illuminates when the heater is on.

It illuminates when the operation starting time of the auto-start and the operation completion time of the auto-stop is set in the hour setting mode. Setting the instrument to the operational temperature of the independent over rising prevention.

6

Installation

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

Never use the unit in an area where there is flammable or explosive gas. The unit is not explosion-proof. An arc may be generated when the power switch is turned ON or OFF, and fire/explosion may result.

Explosive gas

Flammable gas

Always ground the unit.

z Connect the grounding cable to your ground conductor or ground terminal.

z Do not forget to ground the Oven, to protect you and the unit from electrical shock

in case of power surge.

z Do not connect the grounding wire to a gas pipe, or by means of a lightning rod or

telephone line. A fire or electrical shock will occur.

NOTE: The oven has not a plug connected because of the 200V specification.

Choose a correct power distribution board.

z Choose a correct power distribution switchboard or receptacle that meets the

Supply connections for the oven

Install the Oven on a level area.

oven’s rated electric capacity.

Electric capacity AC 200 V, single phase 16A

z Do not connect the oven to an outlet that differs from the above specifications

because a fire or electrical shock will occur.

z Request the supply connection for the 200V specifications from a licensed

electrician.

z Failure to have this operation complete by certified personnel will cause a fire or

electrical shock during Oven operation.

z Do not installation the oven on a non level surface. This will cause hazards to the

operator and create problems during actual operation.

7

Choose a proper place for installation.

e

z Do not install the oven in a place where:

♦ 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 are constant vibrations.

z Keep the following clearance around the oven.

Or mor

After installed, you should:

z It may cause injure to a person if this oven falls down or moves by the

earthquake and the impact, etc..

z To prevent, take measures that the unit cannot fall down. z Secure the unit by putting the stoppers on the casters.

Or mor

Or more

8

Handling of power code.

z 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.

z Do not process, bend, wring, or stretch the power cord forcibly. Fire or electrical

shock may result.

z Do not put the power cord under the desk, chair, etc., or through an object. Fire

or electrical shock may be caused.

z Do not run the power cord next to heating equipment such as a heater. The

cover of the cord may melt and fire or electrical shock may result.

z When the power cord is damaged (exposure of the core wires, disconnection,

etc.), turn off the power key right immediately, then turn off the earth leakage breaker and the main power. Contact customer service for a replacement immediately. If this procedure is not followed, fire or electrical shock may be caused.

Caution in setting shelves

z Do not use any shelves but the attached ones.

If it is used in this manner, the oven cannot occasionally regulate temperatures properly.

z Put the attached shelves on the shelf brackets fitted to the chamber when you use

the oven.

Inert gas injection

z Adjust the pressure valve that the pressure will be within 0.2 to 0.5 kg/cm

to injecting a nitrogen gas.

z Secure the tube with a clamp when injecting a gas. z Readjust the pressure valve within 0.2 to 0.5 kg/cm z Do not inject any gas other than a nitrogen gas.

2

G while injecting a gas.

2

G prior

9

Precautions in handling

Substances that can be used

z Never use explosive substances (shown on page 34), flammable substances

Do not put the foreign substances in the oven.

Caution in taking out samples

When you open the door during working at the high temperature.

Do not touch heated parts.

Do not climb on the oven

Do not put anything on the oven

(shown on page 34) and substances that include explosive or flammable ingredients in the unit. Explosion or fire may occur.

Do not put a foreign substances such as metals or flammable substances in the opening of the unit (ventilation hole and exhaust port, etc.). If this procedure is not followed, fire, electrical shock or burn may result. If the foreign substances enter the unit, turn off the earth leakage breaker immediately and contact a service technician for inspection. If this procedure is not followed, fire, electrical shock or burn may result.

During and immediately after operation, the internal surfaces of the chamber and the door are extremely “HOT." To prevent injury, take out the samples when the chamber has cooled down or wear gloves while the chamber is still hot.

Do not touch the internal surfaces of the chamber and the door when you will open the door, because they are extremely hot.

To open the door while the chamber is still hot may cause the malfunction of a fire detector if it is installed near the oven.

Do not touch the door during or immediately after operation. Severe burning injury may be caused due to the high temperature.

Do not climb on top of the oven because it will fall down and break. Failure to observe this caution may cause injury to a person.

Do not put anything on top of the oven because they will fall and result in injury to a person.

10

Caution about the temperature range.

Use the oven in the range of 40°C to 210°C.

When you use the oven for the first time

During the initial operation, the oven may occasionally generate an odor especially when high temperatures are reached. This odor is normal and does not signal a problem with the oven. The adhesive on the insulation melting causes the nature of the odor.

About the temperature in the chamber

Temperature display indicates the sensor temperature installed in the unit, however it does not always correspond to the temperature of the sample when the sample volume is very large or when the temperature is on the increase.

Caution about a drenched sample

z When using a very wet sample, try to drain it as much as possible before putting it

in chamber.

Caution about a powdery sample and the loading of samples

There are times when a powder sample is scattered by the sudden decompression operation or purge operation. When performing decompression or purge, open the valve very slowly.

It occasionally takes a long time before the chamber reaches the target temperature if the camber is congested with samples or a sample with the large specific heat is in it. In such cases, reduce samples. Moreover, note that the temperature display occasionally unsettle when you process an exothermic sample.

Distribute samples

z Each shelf can carry a uniform load of 15 kg (33 lb.). When you place samples

on a shelf, distribute them evenly over the shelf area.

z If a shelf is congested with samples, the oven occasionally cannot regulate

temperatures properly. To ensure the oven’s temperature accuracy, there should be open space of at least 30% on each shelf.

Never use corrosive samples

Most parts are made of stainless steel (SUS304). However, strong acid occasionally corrodes even stainless steel. Besides this, the silicone rubber packing is also vulnerable to acid, alkali, oil and halogens' solvents

Ventilate a room when using an inert gas

Application in a well-ventilated area is recommended.

11

Do not place any samples on the bottom of the chamber

z Do not place any samples on the bottom of the chamber to heat,

because it affects the temperature control of the oven.

z Always put the samples on the attached shelves. Place sample so that z Set the shelves on the shelf brackets that will accommodate the size of

Sample

it does not touch the interior wall of the chamber. the sample.

During a thunder storm

During a thunderstorm, turn off the power key immediately, then turn off the earth leakage breaker and main power. If this procedure is not followed, fire or electrical shock may be caused.

In case of power failure

Once the power supply has been cut off due to power failure, and then the power supply is restored, the oven will resume running.

When you open and shut the door

Do not put your hand either face near the door when you open and shut the door. Failure to observe this caution may result in injury because the door hits your hand or face.

12

Operating Procedure

When prepared completely, proceed as follows:

1. Turning on of power supply 2. Selection of operation menu

Turn on the earth leakage breaker. • Press the MENU key several times to select

•

desired operating method.

The present time is shown on the sub display. • It allows you to enter each parameter into a

•

flashing menu.

• Push the POWER key in the operation panel.

• When once the power is on, this oven becomes

a standby state. Under such a condition, every operation mode can be selected by pushing the MENU key.

3. Explanation of operation menu

Fixed

Temperature

Auto stop

Auto start

: It is an operation method to bring the oven to the desired temperature and

keep it steady.

: It is an operation method to stop a fixed temperature operation when

reached the set time or hours.

: It is an operation method to start the fixed temperature operation when

reached the set time or hours.

Program

: It is an operation method that can start or stop an operation either when

reached the set time or hours. Moreover, it can change the temperature when reached the desired time and repeat to do that.

13

FIXED TEMPERATURE OPERATION INSTRUCTIONS

Selection of operation

menu

• Push the MENU key and

select the fixed temperature operation.

Push the MENU key.

The lamp of the FIXED TEMP blinks.

• The temperature set last time

is blinking and enters the state that a set temperature can be input in a sub-display.

Input of set temperature

• Push the ENTER key after

making a sub-display display an arbitrary set temperature pushing ▲▼ keys.

Press either the ▲key or the ▼ key

several times.

Then, the desired set temperature will

appear on the main display.

Press the ENTER key.

• The oven will start to run the

fixed temperature operation to the renewed temperature.

Changing the set

temperature when fixed

temp operation is in

progress

• Push either the ▲ key or

the ▼ key to display the desired temperature on the main display and push the ENTER key.

Press either the ▲ key or the ▼

key several times.

Then, the desired set temperature will

appear on the main display.

Push the ENTER key.

• The oven will start to run the

fixed temperature operation to the renewed temperature.

14

AUTO START OPERATION INSTRUCTIONS

Selection of operation menu

• Select AUTO START mode by

pushing the MENU key.

Push the MENU key.

The operation menu lamp of an AUTO START blinks.

Inputting the set temperature

• Press either the ▲ key or

the ▼ key to display the desired temperature on the main display and push the ENTER key.

Press either the ▲ key or the ▼ key several times. Then, the desired set temperature will appear on the main display.

Inputting the desired set

time

• Press either the ▲ key or

the ▼ key to blink start time (or the hour) on the main display, and press the ENTER key.

Press either the ▲ key or the ▼ key several times. Then, the desired start time (or hour) will appear on the main display.

• will appear on the

sub display and the desired temperature can be input.

Sub display

Press The ENTER key.

Press the ENTER key.

• will appear on the

sub display and the operation start time can be input.

• The STANDBY lamp of the

operation monitor blinks.

• The operation will be in standby condition.

•

After reaching the set time (or hour), the oven will start to run the auto start operation to the renewed temperature.

15

Auto Stop Operation Method

Selection of operation menu

• Press the MENU key and

select the auto stop operation.

Press the MENU key.

The menu lamp of an AUTO STOP blinks.

• will appear on the

sub display and the desired temperature can be input.

Sub display

Inputting the set temperature

• Push either the ▲ key or

the ▼ key to blink the desired temperature on the main display and push the ENTER key.

Press either the ▲ key or the ▼ key several times. Then, the desired set temperature will appear on the main display.

Push the ENTER key. The main display will light up to indicate the set temperature you have chosen.

Inputting the desired set

time

• Push either the ▲ key or

the ▼ key to blink your desired time (or hours) for operation stop on the main display, and press the ENTER key.

Press either the ▲ key or the ▼ key several times. Then, the desired stop time (or hour) will appear on the main display.

Push the ENTER key.

After about 1 second

• will appear on the

sub display and the operation stop time can be input.

• will appear on the

sub display and you can chose the wait function to be activated or not.

16

Selection of wait function

• Press either the ▲ key or the

▼ key to indicate the wait function (ON or OFF) on the main display. Then press ENTER key.

Press either the ▲ key or the ▼ key

Either ON or OFF will appear on the

(activate)

several times.

main display.

(inactive)

Working conditions of timer

• Auto Stop timer activates when:

1. The wait function is on.

It starts when the set temperature has

reached the target value.

2. The waiting function is off or the time setting represents hours.

It starts right after the auto stop operation is started.

Press the ENTER key.

• This operation activates the

auto stop operation.

17

Programmed Operation Method

Selection of operation

menu

• Press the MENU key and

select the programmed operation.

The operation menu lamp of the PROGRAM blinks.

Press the MENU key.

Input of execution

program number

• Press either the ▲ key or

the ▼ key to indicate an desired program number on the main display, and press the ENTER key.

Press either the ▲ key or the ▼ key several times. The program number will appear on the main display. NOTE: If no programs have been set,

―――― is blinking. See the Operating Instructions for Programmable Controller to set a new program.

Input of time

• Press either the ▲ key or

the ▼ key to blink your desired operation start time (or hour) on the main display, and press the ENTER key.

Press either the ▲ key or the ▼ key several times. The desired set time will appear on the main display.

• will appear on the

sub display and the execution program number can be input.

Push the ENTER key.

• will appear on the

sub display and the operation start time can be input.

Push the ENTER key.

• The standby lamp on the

operation monitor blinks. (Operation is in STANDBY MODE)

• The operation will start after

the set time is up.

18

SWITCHING FROM ONE OPERATION TO ANOTHER

This instrument can switch to a different operation mode without stopping the current program no matter what mode it is in, fixed temperature operation, auto-start/stop operation, and program operation.

Selection of operation menu

• Press the MENU key several times until the desired operation menu lamp flashes on the Operation Menu.

• Since the current operation has not stopped, the operation menu lamp is also lit.

• On the Operation monitor -- the temperature pattern indicator lamp blinks with the current segment being executed.

• This status allows you to enter each parameter into blinking or lighting operation menu.

When the fixed temperature operation is selected

 The main display shows the current internal

temperature.

 The sub-display flashes the temperature set by the

previous fixed temperature operation.

When auto-start operation is selected

 The main display flashes the temperature set by the

previous auto-start operation.

 The sub-display shows

When auto-stop operation is selected

 The main display flashes the temperature set by the

previous auto-stop operation.

 The sub-display shows

When program operation is selected

 The main display flashes the previously set program

number.

 The sub-display shows

(Temp.)

(Program) The lamp blinks or lights.

Press MENU key several times.

• Now operate according to the operation method you have chosen, see that section of this instruction manual.

19

Method of using DISPLAY key

The display content of the sub display can be changed over by turns when pushed the DISPLAY key.

Operation mode

Sub display

Fixed temperature

operation

Auto start

operation

Auto stop operation

Standby

During operation

Set temperature

Hour

Remaining time

Hour

Set temperature

Remaining time (*1)

Hour

Set temperature

Remaining time (*2)

Hour

Remaining time

Hour

Set temperature

Remaining time

Hour

Program operation

After time is up

Standby

During operation

Execution segment (*3)

After finished

*1: HOLD is displayed. *2: When the wait function is set to on, is displayed in the waiting status.

*3: The DISPLAY key will enable to show the rest of the repeat count while the repeat operation.

20

How to use the MODE

Content of function menu

This controller has the other functions shown bellow.

• Press the MODE key and display your desired function on the main display by pushing either the  key or the  key. Each function will appear by turns whenever pushing the  keys.

Main display Function

Inputting and editing programs

Deleting the Program.

Switching time setting mode.

Setting and releasing the key lock.

Alarm buzzer ON/OFF function.

To input and edit the program.

To delete existing programs that are no longer necessary. Confirmation of the program contents should be performed prior to deleting and in accordance with Programmed Operation Method. To input either an hour or a period of time during time setting process in the various operation modes -auto-start/stop, and program operation. It is set to the time (a period of time) setting mode when the product was shipped from the factory. To set or release the key lock function. This function is for protecting wrong key actions during the operation or while being in the standby state. Once set to ON, the key lock will disable you from doing the POWER, MENU, ENTER, and DELETE key action. If the key lock function is set, the KEY LOCK lamp on the operation monitor is lit. To select whether you want to activate the alarm buzzer or not when an error occurs.

Press the mode key.

Select with the ▲ key or the ▼ key.

Accumulating time display function

Hold function

Date and current hour setting function.

Calibration offset function

To display the total duration that the POWER key is on, within the range of 0 to 49999 hours.

To hold the operation that is currently running. This function will get active only when you run the oven in auto-start/stop or program operation mode (includes the standby state). In addition, it will work when the setting of the operation start time for auto-start and program operation as well as the operation end time for auto-stop are set in the form of “Time” and not in the form of “Hour.” To set the date and hour.

To conform the display temperature to the measurement temperature of a voluntary point in the chamber at a voluntary temperature. Details are described on page 22

21

Calibration Offset Function

Outline of Function

Display temperature (Controlled temperature)

D

S

Here, T

D

0

y=ax+b

central temperature becomes the zero adjusting temperature (normally room temperature is adopted) D is the sensor detecting temperature when the chamber central temperature becomes the span adjustment temperature (normally

T

0

Sensor detection temperature

Fig. 1

T

S

working maximum temperature is adopted) D in the same way. As it is clear from the facts above, conforming of the chamber central temperature and the display temperature is guaranteed only when

there is no load and at two points shown above. In other words, it is possible for a temperature measured at a point in the chamber does not conform to the display temperature of the operation panel at a voluntary temperature without load. This is the function to move the line which passes above two points to the Y axis direction in parallel (increase or decrease y intercept of the line). The parallel movement amount including a sign is defined as the calibration offset. This function can conform the display temperature of the operation panel to the measurement temperature of a voluntary point in the chamber at a voluntary temperature.

Display temperature (Controlled temperature)

Parallel movement

D

SV

D

PV

Sensor detection temperature

△

D

CAL

T

i

T

V

Fig. 2

temperature to the actually measured temperature, let the controller to recognize that the temperature in the chamber differs from the target set temperature by ΔD

In the controller, the relationship between the temperature T detected by the sensor and the display temperature of the operation panel D is expressed by the equation of the line which passes the two points (T

, D0) and (TS, DS)

0

shown in Fig. 1.

is the sensor detecting temperature when the chamber

0

at the time of no load, TS

0

at the time of no load

S

In Fig. 2, DSV is a display temperature of the operation panel under the condition that the temperature in the chamber is constant for a set temperature. It is natural to say that this value is equal to the target set temperature. D

is a

PV

measurement temperature of a voluntary point in the chamber under this condition. The difference between D

and DSV including the sign is defined

PV

as the calibration offset. Therefore offset is shown as below.

△

D

CAL＝DPV

In Fig. 2, ΔD

becomes the negative value since the target

CAL

set temperature D temperature D

.

CAL

－

D

SV

is larger than the actually measured

SV

. In order to conform the display

PV

Equation 1

NOTE: Setting Tolerance of Calibration Offset

♦ The calibration offset can be set within ±5% of the maximum working temperature of the oven.

(Therefore, the setting tolerance of the calibration offset is ±19°C.)

♦ Initial off set value has been set to 0°C when shipping.

22

Setting The Calibration Offset Function

This function can be activated when the controller is in the condition of accepting the MODE key.

EX. Bring the oven to the target set temperature 100°C and allow it to reach the steady state. After

then, measure the temperature at a point in the chamber. If it shows 97°C when the main display shows 100°C, you can conform your measuring value to the one on the display by using the calibration offset function.

Calibration offset ΔD

△

D

＝97℃－100℃＝－3℃

CAL

Procedures to set the calibration offset ΔD

Setting and changing the calibration offset value

• Push the MODE key, and then push the  key or the  key several times to display on the main display.

• The sub display shows the calibration offset value that has been set the last time.

is obtained from the Equation 1 (page22) as shown below.

CAL

to the controller are shown as below.

CAL

Push the  key or the  key several times



NOTE: When the unit is shipped from the factory, the sub-display shows 0 as the

calibration offset value.

Push the ENTER key.

• The main display flashes the preset calibration offset value.

⇒ In this state, the set value of the calibration offset can be changed.

• The sub display shows

.

Push the  key or the  key several times

• Push either the  key or the  key to change the value on the main display to your desired value (calibration offset value to be set newly).

When the changing is completed, push the

ENTER key.

• The changed value is entered and both the main and the sub displays return to the display mode just before pushing MODE key. The controller starts the temperature controlling operation in order to make the difference zero, since the difference is generated between the target set temperature and the temperature in the chamber by the changing of the calibration offset value.

23

Safety Devices and Error Codes

Purposes and Operations of Safety Device and Counter-measures

This instrument incorporates an automatic diagnosis function built in the controller and safety devices independent of the controller. The purposes and operations of the safety devices and countermeasures are shown in the Table below. When an abnormal condition occurs, an error code is displayed in the main display. Immediate action should be taken according to the specific counter-measures.

Safety Device Display Cause & Counter-measures

1. Earth leakage breaker No Display

2. Sensor malfunction detector

3. Triac circuit detector

4. Disconnected heater circuit detector

5. Independent overheating prevention

6. Main relay malfunction detector

7. POST function*

TROUBLE lamp flashes.

flashes.

TROUBLE lamp flashes

flashes.

TROUBLE lamp flashes

flashes.

TROUBLE lamp flashes

flashes.

TROUBLE lamp flashes

flashes.

TROUBLE lamp flashes

, , flashes.

8. Automatic overheating preventive function

9. Key lock

10. Memory backup circuit No Display

11. Door switch flashes

No Display

Key lock display lamp lights up

z POST (Power On Self Test) function checks the microprocessor, memory surrounding LSI, surrounding

circuit of the controller every time “POWER” key is turned ON. This is the function for checking that the controller won’t have a fatal fault before starting the operation.

• Power circuit interrupted

• Erases all displays ⇒ Report to our service office and

check the cause of the problem.

• Break in temperature sensor circuit. ⇒ Report to our service office.

• Short circuit in triac. ⇒ Report to our service office.

• Heater circuit is disconnected. ⇒ Report to our service office.

• Incorrect setting of the independent

overheating prevention.

⇒ Set correctly.

• Heating of sample ⇒ Reduce the amount of the sample.

• Malfunction of the independent

overheating prevention circuit.

⇒ Report to our service office.

• A malfunction of the main relay. ⇒ Report to our service office.

• Contact Yamato Sciectific’s

Technical Service Department.

• Heating of samples ⇒ Reduce amount of samples

• This function prevents the disruption

of operation due to incorrect operation. Leave it on during operation. (See section in this manual for setting and resetting methods on page 21).

• It is not the fault. ⇒ When opened the door,

flash on the sub display and the heater circuit will be cut off and the fan will stop for safety. Once closed the door, the heater circuit and the fan will resume working.

will

will go out and

24

INDEPENDENT OVERHEAT PREVENTION

There are two safety devices in this unit: the auto-overheating preventive function of the controller (automatic recovery) and the independent overheating prevention (manual recovery). Circuits and sensors that are independent from the controller configure them. These safety devices for the temperature overheating prevention protect the instrument in a fail-safe method.

Setting the Temperature Range and Function

Setting Temperature: Input Method:

Function:

Activation/Setting Method

1. Set the independent overheating prevention 15

unit.

2. When setting the proper value to protect the sample, be sure it is well above room temperature,

and set it at least 15 pattern of the program.

3. When the independent overheating prevention is activated improperly by changing the setting

of the independent overheating prevention lower than the internal temperature or by continuing operation when the setting on the unit is too low, turn off the earth leakage breaker to reset the unit and perform the setting again. If it is activated by another reason, see chapter of Safety Devices and Error Codes on page 24.

Precautions

1. Only 0 to 3 can be set for the column of hundreds of the digital switch by the stop mechanism;

however, if forced to change it to a value higher than 3, it will damage the unit.

2. Set temperature can change by touching the setter when cleaning. Always confirm that the

set temperature is correct after cleaning or before operation.

0 to 399 Three integer digital switch. Turn the drum of each column and set the desired

value. The first integer can only be from 0 to 3 for the hundred columns. Heater output is cut off when the measured temperature gets higher than the set temperature of the independent overheating prevention. The function is active when the earth leakage breaker is ON. When the independent overheating prevention is activated, is flashing on the main display with the TROUBLE lamp flashes. When the independent overheat prevention is active while the heater is in the temperature rising process, etc., and flash alternately on the display.

o

C

o

C higher than the set temperature of the main

o

C higher than the maximum temperature set value of the temperature

25

Behavior after Power Restoration

In case of power failure during operation, the controller resumes the following operations after the power restoration.

In case of power failure during the program operation

The controller automatically resumes the program operation where it left at the power shutdown. In case that the temperature inside the chamber is outside the specified temperature range based on the setpoint temperature, the controller goes to the FORECED WAIT STATE until the temperature inside the chamber comes back to the specified temperature range. When you select the display of the remaining time by

pushing the Display key in this condition, the sub display shows The timer built-in the controller does not count as running time for a period of power failure.

.

In case of power failure during the Auto-Stop operation

The controller automatically resumes the Auto-Stop operation where it left at the power shutdown. In case that the temperature inside the chamber is outside the specified temperature range based on the setpoint temperature after the power restoration, the controller goes to the FORECED WAIT STATE until the temperature inside the chamber comes back to the specified temperature range. When you select the display of the remaining time by pushing the Display key in this condition, the sub display shows

. (Forced Wait) In case that the operation stop time is set in a period of time, the timer built in the controller does not count as running time for a period of power failure. On the contrary, in case that the operation stop time is set in hours, the timer built in the controller counts as running time for a period of power failure. When the operation stop time reaches during power failure, the controller stops running just after the power restoration.

In case of power failure while the controller is in standby condition

In case that the operation start time is set in a period of time, the timer built in the controller does not count as standby time for a period of power failure. On the contrary, in case that the operation start time is set in hours, the timer built in the controller counts as standby time for a period of power failure. When the operation start time reaches during power failure, the controller starts running just after the power restoration.

In case of power failure during the fixed temperature operation and a soak period of

the Auto-Start operation

The controller resumes running toward to the preset temperature after the power restoration.

26

Maintenance and Inspection

Do not disassemble and modify the oven.

z Do not disassemble the oven. There are parts in the unit with high voltage;

therefore, if the unit is disassembled, electric shock and injury may result.

Ask the Yamato Scientific office for inspection, adjustment, and repair of the inside of

the unit.

z Unauthorized modification will be hazardous and cause problems in the operation

of the Oven.

Modification

Maintenance Precautions

z Before starting inspection or maintenance, disconnect the power plug from the

Periodic inspection of the safety component.

If you have any questions, contact our sales representative in your vicinity or our service office.

receptacle.

z Conduct inspection and maintenance only after the oven has cooled down. z When you remove dirt or stains from the unit’s resin parts and the control panel,

use a soft wet cloth. Do not use benzene, thinner, cleanser or a hard brush; it will cause deformation, qualitative deterioration and/or discoloring of the components.

z The independent temperature over-rise prevention device is important safety

component. Be sure to inspect it periodically.(See chapter of Maintenance Procedure on page 28)

27

Maintenance Procedure

Operation Check of Independent Temperature Overheating Prevention Device

z After executing the fixed temperature operation at the set temperature 0°C, set the operation

temperature of the Independent Temperature Overheating Prevention Device to 0°C.

z Under normal circumstances, the heater circuit is cut off in a few seconds and the TROUBLE

lamp and buzzer function is ON.

z After confirming, turn off the earth leakage breaker once, and then return the setting of the

Independent Temperature Overheating Prevention Device to the proper value. Turn the earth leakage breaker back ON.

Always perform inspection before a long continuous operation or an unattended operation.

flashes at the same time, and the alarm buzzer sounds if the alarm

Long Storage and Disposal

When you do not use the oven for a long period of time.

Disconnect the power cable from the power switchboard.

When you dispose of the oven.

Do not leave it where children can access. Remove the knob and hinges of the door to disable the door locking system.

28

After service and WARRANTY

If a Service Call is required:

If a Service Call is required Warranty Card (attached to your Oven)

z If a problem occurs with the Mechanical

Inert Oven, record the error code on the display and stop the operation immediately, turn off the power switch, and disconnect the power plug from the receptacle. Contact our sales or service representative.

z Check the warranty card or the name

plate of your Mechanical Inert Oven and give us the information below.

• Model of your oven;

• Serial product number of your

oven;

• Date of purchase; and

• Problem with your oven (as

detailed as possible).

Minimum Inventory Period of Repair Parts

Repair parts will be available for at least 5 years after termination of our production of Mechanical Inert Oven. Repair parts mean the parts that are necessary to maintain the performance of the ovens.

z Please fill out completely and return the

bottom portion of the warranty card when the unit is received. The completed top portion is your Registration Card that should be retained for your records.

z Warranty period is one (1) year after

the date of your purchase. During this warranty period, we will offer free repair service on the basis of the conditions provided on the warranty card.

z If you need repair service after

expiration of the warranty period, contact our sales or service representative in your vicinity or service office for advice.

29

TROUBLESHOOTING

Problem Cause/Solution

No display of current hour in the sub-display at the activation of the earth leakage breaker.

Temperature fluctuates during the operation

It takes too much time for temperature to rise.

• Check if the power cable is firmly connected to a receptacle.

• Check for power failure.

• Does ambient temperature fluctuate

violently?

• Are there too many samples in the chamber?

• Are the samples too moist?

• Are there too many samples in the

chamber?

30

SPECIFICATIONS

Model DN410I Method Performance:

Operating Temperature Temperature Stability*1 Temperature Uniformity Time To Reach Max. Temp.*1

Displacement Time

Structure:

Exterior Interior Chamber Insulating Material Heater Nominal Capacity Fan Flowmeter

Gas Injection Port

Controller:

Temperature Control Method Temperature Setting Method Temperature Indicating Method Other Indication Timer

Operation Function

Additional Function

Heater Circuit Control Sensor

Safety Device

Internal Dimensions (WxDxH)*2 External Dimensions (WxDxH)*2

Capacity Weight

Power Requirements Accessories:

Shelf / Shelf Brackets Instruction Manual

Approximately 70 min ( Ambient temperature, Oxygen concentration in the chamber reaches 2%)

Cold rolled steel plate with baked-on melamine resin finish

Outside diameter 8 mm (rear face)

Digital setting method by  keys (resolution: 1°C)

Digital display by green LED (resolution: 1°C)

Temperature pattern LED indication that shows operation indication

1 min. to 99 hrs. 59 min. or 100 hrs to 999 hrs

(Timer resolution: 1 min. or 1 hr.) Fixed temperature operation Auto-start/Auto-stop operation Program operation (16 segments, repeat, etc.) Calendar timer function (actual hr. timer within 24 hrs.) Integrating time function (Integrated hr. up to 49999 hrs. can be measured.) Time indication (The present time is indicated.) Calibration offset function

K thermocouple (double sensor) Earth leakage breaker with the over current protector Self-diagnostic function (sensor abnormality, heater disconnection and Triac short circuit detection; automatic temperature over-rise prevention) Key lock function Independent Temperature Overheat Prevention device (Digital switch input system, setting temperature range: 0 to 399°C)

AC 200 V, 50/60Hz, 16A single phase

For exclusive use of this oven and the controller: each one

NOTES: *1. The values written on the chart were measured with no sample and both exhaust ports closed

in ambient temperature of 20°C. *2. Displacing was performed with a flow rate of 20 ml per minute. *2. Both of internal and external dimensions do not include the one of protruding parts.

Forced Ventilation

４０～３６０℃ ±０．２℃（＠３６０℃） ±３．０℃（＠３６０℃）

Approx. 60 min.

Stainless steel (SUS304)

Glass wool and Ceramic fiber

3.0kW

Sirocco fan, Output:10W×2

Maximum flow rate; 30 ml/min

PID control by microprocessor

Triac zero cross system

470 mm × 450 mm × 450 mm

640mm × 695mm × 930mm

95 l

Approx. 80 kg

2 sets

31

WIRING DIAGRAM

Symbol Part Name Symbol Part Name

CT1 Current Transformer PCB3 Power board ELB Earth leakage breaker PCB4 Independent overheat prevention FM1 Fan motor PI1,2 Photo-interrupter H Heater SSR1,2,3 Solid-state relay LS Door switch SW Membrane keypad P1,2 Terminal block Tf Transformer PCB1 PIO board TH Thermocouple PCB2 PLANAR board X1 Relay

32

REPLACEMENT PARTS TABLE

Symbol Part Name Code No. Specifications

CT Current Transformer 2-17-001-0002 CTL-6-S-400 ELB Earth leakage breaker FM Fan motor 2-14-000-0003 REK42M-4CCW, AC200V H Heater P Power code 2-13-001-0010 T3 - 3d P1,2 Terminal block 2-07-023-0002 M011-0FX 4P PCB1 PIO board 1-24-000-0024 PCB2 PLANAR board 1-24-000-0059 PCB3 Power board 1-24-000-0025 Type 1 PCB4 Independent overheat

prevention PI1,2 Photo-interrupter 1-21-001-0002 TLP802 SSR1,2,3 Solid-state relay LT00028423 SSR-01 SW Membrane keypad 1-01-320-0008 Type 4H Tf1 Transformer 2-18-000-0023 AC200V TH Thermocouple 1-16-001-0042 K thermocouple (double sensor) X1 Relay 2-05-000-0010 HE1a-DC12V

2-06-005-0012 BJS30-3

DN63H-30320 AC200V 1500W

1-27-001-0002 QKB-0

33

Reference

HAZARDOUS MATERIAL

Explosives

3. Peracetic acid, Methyl ethyl ketone peroxide, Benzoyl

1. Potassium chlorate, Sodium chlorate, Ammonium chlorate,

2. Potassium perchlorate, Sodium perchlorate, Ammonia

Oxidants 3. Potassium peroxide, Sodium peroxide, Barium peroxide, and

4. Potassium nitrate, Sodium nitrate, Ammonia nitrate, and other

Flammables 5. Sodium chlorite and other chlorites.

1. Nitroglycol, Nitroglycerin, Nitrocellulose, and other explosive nitric esters.

Explosives Substances

Combustible Substances

2. Trinitrobenzens, Trinitrotoluene, Picric acid, and other explosive nitro compounds.

peroxide, and other organic peroxides.

Metallic lithium, Metallic potassium, Metallic sodium, Yellow phosphorus, Phosphorus sulfide, Red phosphorus, Celluloid, Calcium carbide, Lime phosphate, Magnesium powder, Aluminum powder, and other ignitable metal powders and sodium dithionite (hydrosulfite).

and other chlorates.

perchlorate, and other perchlorates.

other inorganic peroxides.

nitrates.

6. Calcium hypochlorite and other hypochlorites. Ethyl ether, Gasoline, Acetaldehyde, Propylene chloride,

Carbon disulfide, and flammable substances with a flash point below minus 30ºC.

Ignitable

Substances • Methanol, Ethanol, Xylene, Pentyl acetate (amyl acetate), and

• Kerosene, Light oil, Turpentine oil, Isoamyl alcohol, Acetic acid,

Combustible

Gases

Normal hexane, Ethylene oxide, Acetone, Benzene, Methyl ethyl ketone, and flammable substances with a flash point between minus 30ºC and 0

inflammable substance with a flash point between 0ºC and 30ºC.

and flammable substances with a flash point between 30ºC and 65ºC

Hydrogen, Acetylene, Ethylene, Methane, Ethane, Propane, Butane, and other gases that are flammable under 1 atmospheric pressure at 15ºC.

o

C.

(Quoted from “Addendum Table1 of Code of Work Safety and Hygiene Standard”)

34

List of Symbols in the display

The oven has the controller with the 4-digit LED display. The meaning of symbols in the display is as follows: Capital Symbol Meaning of Abbreviation Meaning of Symbol in the display

A B C D

E

F H

L

Ｍ

O

P

R

S

T

W

Y

#

accumulation Integrated time beep Alarm sound setting mode Calibration Calibration offset setting mode delete program Deleting a program display Sub display switching mode end Setting mode for program end error # Error code #

f. wt (Forced wait) hold Hold function mode

hr. mn (hour. minute) Setting of time (hour, minute) lock Panel locking mode

mn. dy (month. day) Setting of the date (month and day) off Make a function inactive on Make a function active program # Program number program Program mode program, segment Ongoing program and ongoing segment repeat count Repeat frequency setting mode

real (real time) The hour repeat Repeat command mode

rest time # Rest for remaining time ramp level Ramp level of Segment # (Desired set temperature)

#

repeat start Repeat start segment setting mode ramp time # Ramp time of Segment #

#

r. tim (real time) the hour segment # Segment number

#

soak time Soak time of Segment # (Holding time of the ramp step Not in Ramp Operation

temp Temperature mode time Time mode wait Wait function (Keep the operation until the desired

wait # Wait function of Segment # year the Christian era

Forced wait state after the power restoration

(Time required to reach the ramp level)

level)

temperature is achieved)

35

Flowchart of Operational Procedures

Run “MENU”

Menu key

Fixed temperature

operation

Displays set

temperatue

Set to your desired temperature by using either



key or the  key.

the

ENTER key.

Press the ENTER key

The oven can start the fixed temperature operation after a lapse of the fixed time.

Displays set

temperatue

Set to your desired operation start time by using either the



key or the  key.

Set to your desired temperature by using either the



key or the  key and then press

the ENTER key.

When you run the oven in a programmed operation, proceeds as follows.

Select the program number by using either the the



key and then press the

ENTER key.

Set to your desired operation start time by using either the  key or the  key.



key or

The operation start time will appear on the main display in minute.

Program operation

A feasible program number will appear on the main display.

The operation start time will appear on the main display in hour as of now.

ENTER key

Press the ENTER key

Auto stopAuto start

The oven can stop the fixed temperature operation after a lapse of the fixed time.

Displays set

temperatue

Set to your desired temperature by using either the and then press the ENTER key.



key or the  key

The operation start time will appear on the main display in minute.

When switching the sub display screens during standby condition, the remaining time and the hour as of now can appear. Once started operation, the remaining time (= HOLD), the hour as of now and the set temperature can be switched on the sub display.

The operation start time will appear on the main display in hour as of now.

Set the fan motion to ON or OFF.

ENTER key.

Press the ENTER key

Set the wait function to ON when you want to hold the fixed operation for a time that you have set in advance. Set the wait function to OFF when you want to run the oven through the operation for a time that you have set in advance.

Select the wait function

ENTER key.

36

The operation stop time will appear on the main display in minute.

Set the fan motion after the operation stopped.

Press the ENTER key

The operation stop time will appear on the main display in hour as of now.

Set the fan motion to ON or OFF.

ENTER key.

Press the ENTER key

Program “MODE”

MODE

Main display

Inputting and deliting programs (ProG)

Programming

NOTE:If there are no programs, this will not appear.

Deleting programs

Time/Hour switching function

Select the timer mode that you want to run in hour mode or in a period of time mode while running each operation.

See the programming flowchart.

ENTER key ENTER key

*The number of existing programs will appear on the sub display.

ENTER key

In case of a period of time



▲

▼

Select the programs number that you want delete.

keys

In case of the hour

ENTER key



keys

The key action will get active.

keys

The alarm will not be sounded.

ENTER key ENTER key

Key lock setting/ releasing function

Select the key lock mode.

ENTER key ENTER key

Alarm buzzer ON/OFF function

Set the alarm to be sounded or not if a problem occurs.

Display

Accumulating time (Accm)

Diplay the total time for the power being on.

The key lock will disable you from doing the key action.

The alarm will be sounded.

The total time for the power being on can be shown on the sub display.

It will appear on the sub display.

ENTER key ENTER key ENTER key ENTER key

Date and current hour setting function (cLoK)

Set the date and hour.

Calibration off set function (cAL)

Set the Christian era by using either the key or the  key.



Display

The calibration off set value that has been set in advance will appear.

Set the date by using either the



key or



key.

the

▲

▼

Change to your off set value by using either the the



key.



key or

ENTER keyENTER key

Set the hour by using





key or

key.

either the the

37

Flowchart for programming

Segment configuration

: Segments are made up of the

following items, and must be input in this order.

Temperature

MODE

▲

▼

key

Press

Key

Call up the program mode.

Ramp level

Ramp time

Ramp level

Soak time

Wait function

Time

Soak time

Rising time

Target temperature

Time held at ramp level

Selects whether to give priority to soak time (OFF), or to hold process time at ramp level (ON).

ENTER

key

▲

▼

ENTER

key

▲

▼

ENTER

key

▲

▼

ENTER

key

▲

▼

ENTER

key

▲

▼

ENTER

key

▲

▼

ENTER

key

▲

▼

ENTER

key

▲

▼

ENTER

key

▲

▼

Settings

finished

Key

Call up the program number that you want to input or edit.

Key

When you want to rewrite programs, call up your desired segment number on the main display.

Key

Note that this will appear in case of editing. Input Ramp time.

Note: When you run this unit with full power,

Key

input

.

Input Ramp level.

Key

Input Soak time. Note: If there is no soak time (changing

immediately to next temperature), input

Key

0. To hold, select

Select wait function.

Key

The next segment will appear. Note: To repeat, press either the  key or the 

key to display

, and select it with the ENTER key. Input the segment number that you want to repeat, and then do the repeat count.

Key

* Input all the settings in the same way. When finished inputting all items, select

for the ramp time, and press the

ENTER key.

Key

38

MECHANICAL INERT OVEN

Model: DN610I

Version 2

Yamato Scientific Co., LTD.

Congratulations on your selection of Yamato Scientific’s Mechanical Inert Oven! Please read these operating instructions, user notes and the warranty card thoroughly before the initial operation of your Mechanical Inert oven. This will ensure proper operating procedures and extended life for the unit. Please keep the operating instructions together with the warranty card for easy access whenever you need them.

Attention: Read the warnings in the operating instructions carefully to familiarize

yourself with the initial operation of your Mechanical Inert oven.

Depending on the extent and nature of danger, the warnings given in these operating instructions are classified into the following two categories by symbol.

To protect operators from accident - Negligence of this warning may result in a serious accident.

To protect the Mechanical Inert Oven from damage - Negligence of this warning may result in damage to the Mechanical Inert Oven.

This warning also gives you tips on performance that are useful in its operation and maintenance or indicates the common mistakes that operators often make.

TABLE OF CONTENTS

EXPLANATION OF PICTURE DISPLAY ...................................................................................................1

SAFETY PRECAUTIONS .............................................................................................................................2

NOTES TO USERS........................................................................................................................................4

I

DENTIFICATION OF PARTS ..............................................................................................................................4

Main unit.....................................................................................................................................................4

Control Panel ..............................................................................................................................................5

INSTALLATION .................................................................................................................................................7

I

NERT GAS INJECTION ......................................................................................................................................9

PRECAUTIONS IN HANDLING................................................................................................................10

OPERATING PROCEDURE .......................................................................................................................13

FIXED AUTO A P SWITCHING

TEMPERATURE OPERATION INSTRUCTIONS.......................................................................14

START OPERATION INSTRUCTIONS.........................................................................................15

UTO STOP OPERATION METHOD..................................................................................................................16

ROGRAMMED OPERATION METHOD .............................................................................................................18

FROM ONE OPERATION TO ANOTHER .........................................................................19

METHOD OF USING DISPLAY KEY........................................................................................................20

HOW TO USE THE MODE.........................................................................................................................21

C

ONTENT OF FUNCTION MENU.......................................................................................................................21

C

ALIBRATION OFFSET FUNCTION ..................................................................................................................22

Outline of Function ..................................................................................................................................22

Setting The Calibration Offset Function ................................................................................................23

SAFETY DEVICES AND ERROR CODES ................................................................................................24

P

URPOSES AND OPERATIONS OF SAFETY DEVICE AND COUNTER-MEASURES................................................24

INDEPENDENT

OVERHEAT PREVENTION .........................................................................................25

BEHAVIOR AFTER POWER RESTORATION .........................................................................................26

MAINTENANCE AND INSPECTION .......................................................................................................27

M

AINTENANCE PROCEDURE ..........................................................................................................................28

L

ONG STORAGE AND DISPOSAL......................................................................................................................28

AFTER SERVICE AND WARRANTY ........................................................................................................29

I

F A SERVICE CALL IS REQUIRED: ..................................................................................................................29

TROUBLESHOOTING................................................................................................................................30

SPECIFICATIONS ......................................................................................................................................31

WIRING DIAGRAM ....................................................................................................................................32

REPLACEMENT PARTS TABLE...............................................................................................................33

REFERENCE ...............................................................................................................................................34

HAZARDOUS L

IST OF SYMBOLS IN THE DISPLAY.................................................................................................................35

F

LOWCHART OF OPERATIONAL PROCEDURES................................................................................................36

MATERIAL..........................................................................................................................34

Run “MENU”.............................................................................................................................................36

Program “MODE” .....................................................................................................................................37

Flowchart for programming.....................................................................................................................38

Explanation of picture display

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.

If the warning is ignored, there is the danger of a problem that may cause a serious accident or even fatality.

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

Safety Precautions

WARNING

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

 Never use the unit in an area where there is flammable or explosive gas. The unit is not explosion-proof. An arc may be generated when the power switch is turned on or

off, and fire/explosion may result.

Always ground the unit.

 Always ground the unit on the power equipment side in order to avoid electrical shock due to a

power surge.

If a problem occurs, you should:

 If smoke or strange odor should come out of the unit for some reason, turn off the power key

right away, then turn off the earth leakage 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.

Do not put the power cord under the desk, chair, etc.,

 Do not put the power cord under the desk, chair, etc., or through an object. Fire or electrical

shock may be caused.

Do not run the power cord next to heating equipment such as a heater.

 Do not run the power cord next to heating equipment such as a heater. The cover of the cord

may melt and fire or electrical shock may result.

2

WARNING

Substances that can not be used.

 Never use explosive substances, flammable substances and substances that include explosive

or flammable ingredients in the unit. Explosion or fire may occur.

Do not disassemble or modify the unit.

 Do not reconfigure the unit. Fire or electrical shock may be caused.

Do not touch the door during or immediately after operation.

 Do not touch the door during or immediately after operation. Severe burning injury may be

caused due to the high temperature.

CAUTION

During a thunder storm . . .

 During a thunderstorm, turn off the power key immediately, then turn off the earth leakage

breaker and the main power. If this procedure is not followed, fire or electrical shock may be caused.

Periodic check of the safety component.

 The independent temperature over-rise prevention device is important safety component. Be

sure to inspect it periodically. (See chapter of INDEPENDENT OVERHEAT PREVENTION on page 25.)

3

Notes to Users

Identification of Parts

Main unit

Door handle

Independent overheat prevention

Control panel

Flowmeter

Gas injection port

Power switch (Earth leakage breaker)

Power cable

4

⑤

⑪

c

Control Panel

⑪f

⑪e

⑪

⑪b

⑪

⑯

⑫

⑨

④

⑮

⑧

⑩

⑥⑦

⑬

(1) POWER key: (2) MODE key: (3) DISPLAY key:

(4) MENU key:

(5) ENTER key: (6)/(7)(UP/DOWN) key: (8) ESCAPE key: (9) Main Display: It displays temperature measurements, set values (temperature, (10) Sub Display: It displays set temperature, remaining time, current hour and (11) Operation monitor: It indicates an operation mode.

a) (11) STANDBY lamp: b) (11) Temperature

pattern lamp:

c) (11) OVER lamp: d) (11) TROUBLE

indicator lamp:

Key to change over the controller from the standby mode to the operation mode or from the operation mode to the standby mode. Key to select a function from program input, edit, delete modes, hour/time setting, change-over mode, and other functions. Key to change-over the display content of the sub display (10). Display content is changed over to set temperature, remaining time, hour, execution segment No. Key to select the operation mode. Each mode of fixed temperature, auto-start, auto-stop and program operation can be selected. Key to determine the input value of set value (temperature, time, hour, etc.), selection mode, execution segment No. etc. Key to change set value (temperature, time, hour, etc.) and to choose a selection from various parameters on the function menu. Key to cancel the latest entry and recover the status that was valid prior to the making the latest selection.

time, hour, etc.), program information, error information, etc. execution segment No. etc. It flashes to indicate that the instrument is in the preoperational

standby mode. It illuminates to indicate the heat treatment process pattern executed by the controller with flashing light indicating the point currently in execution. It flashes to indicate the end of auto-stop or program operation. It blinks when an error is detected and displays the corresponding code for that particular problem.

5

⑭

②

①

③

e) (11)REMOTE operation

indicator lamp:

f) (11)KEY LOCK

indicator lamp:

(12) Operation menu

indicator lamp:

(13) Sub display menu

indicator lamp:

(14) HEAT ON indicator

lamp

(15) TIME indicator lamp:

(16) Independent

Temperature Overheating Prevention Device:

It illuminates when the instrument is put into remote operation (optional) and displays the word “REMOTE.” It illuminates to indicate that the operation panel key lock function is in operation. It illuminates to indicate the active operation mode in the operation menu. It illuminates to indicate the item (set temperature, remaining time, hour or execution segment) shown in the sub display. It illuminates when the heater is on.

It illuminates when the operation starting time of the auto-start and the operation completion time of the auto-stop is set in the hour setting mode. Setting the instrument to the operational temperature of the independent over rising prevention.

6

Installation

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

Never use the unit in an area where there is flammable or explosive gas. The unit is not explosion-proof. An arc may be generated when the power switch is turned ON or OFF, and fire/explosion may result.

Explosive gas

Flammable gas

Always ground the unit.

z Connect the grounding cable to your ground conductor or ground terminal.

z Do not forget to ground the Oven, to protect you and the unit from electrical shock

in case of power surge.

z Do not connect the grounding wire to a gas pipe, or by means of a lightning rod or

telephone line. A fire or electrical shock will occur.

NOTE: The oven has not a plug connected because of the 200V specification.

Choose a correct power distribution board.

z Choose a correct power distribution switchboard or receptacle that meets the

Supply connections for the oven

Install the Oven on a level area.

oven’s rated electric capacity.

Electric capacity AC 200 V, single phase 21A

z Do not connect the oven to an outlet that differs from the above specifications

because a fire or electrical shock will occur.

z Request the supply connection for the 200V specifications from a licensed

electrician.

z Failure to have this operation complete by certified personnel will cause a fire or

electrical shock during Oven operation.

z Do not installation the oven on a non level surface. This will cause hazards to the

operator and create problems during actual operation.

7

Choose a proper place for installation.

z Do not install the oven in a place where:

♦ 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 are constant vibrations.

z Keep the following clearance around the oven.

Or more

After installed, you should:

z It may cause injure to a person if this oven falls down or moves by the

earthquake and the impact, etc..

z To prevent, take measures that the unit cannot fall down. z Secure the unit by putting the stoppers on the casters.

Or more

8

Handling of power code.

z 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.

z Do not process, bend, wring, or stretch the power cord forcibly. Fire or electrical

shock may result.

z Do not put the power cord under the desk, chair, etc., or through an object. Fire

or electrical shock may be caused.

z Do not run the power cord next to heating equipment such as a heater. The

cover of the cord may melt and fire or electrical shock may result.

z When the power cord is damaged (exposure of the core wires, disconnection,

etc.), turn off the power key right immediately, then turn off the earth leakage breaker and the main power. Contact customer service for a replacement immediately. If this procedure is not followed, fire or electrical shock may be caused.

Caution in setting shelves

z Do not use any shelves but the attached ones.

If it is used in this manner, the oven cannot occasionally regulate temperatures properly.

z Put the attached shelves on the shelf brackets fitted to the chamber when you use

the oven.

Inert gas injection

z Adjust the pressure valve that the pressure will be within 0.2 to 0.5 kg/cm

to injecting a nitrogen gas.

z Secure the tube with a clamp when injecting a gas. z Readjust the pressure valve within 0.2 to 0.5 kg/cm z Do not inject any gas other than a nitrogen gas.

2

G while injecting a gas.

2

G prior

9