Yamato DN410H/610H Constant Temperature Oven Operation Manual

DRYING OVEN

Model: DN410H

Version 2

Yamato Scientific Co., LTD.

Congratulations on your selection of Yamato Scientific’s Drying Oven!

Please read these operating instructions, user notes and the warranty card thoroughly before the initial operation of your drying 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 drying 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 Drying Oven from damage --

Negligence of this warning may result in damage to the Drying 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

DESCRIPTION AND FUNCTION OF EACH PART...................................................................................4

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

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

REQUIREMENTS FOR INSTALLATION...................................................................................................7

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

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

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

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

A

UTO

S

TOP

O

PERATION

M

ETHOD

..................................................................................................................16

P

ROGRAMMED

O

PERATION

M

ETHOD

.............................................................................................................18

SWITCHING 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

O

FFSET

F

UNCTION

..................................................................................................................22

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

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

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

P

URPOSES AND

O

PERATIONS OF

S

AFETY

D

EVICE AND

C

OUNTER

-

MEASURES

................................................24

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

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

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

M

AINTENANCE

P

ROCEDURE

..........................................................................................................................28

L

ONG

S

TORAGE AND

D

ISPOSAL

......................................................................................................................28

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

I

F A

S

ERVICE

C

ALL IS REQUIRED

: ..................................................................................................................29

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

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

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

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

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

HAZARDOUS MATERIAL..........................................................................................................................34

L

IST OF

S

YMBOLS IN THE DISPLAY

.................................................................................................................35

F

LOWCHART OF

O

PERATIONAL

P

ROCEDURES

................................................................................................36

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

DESCRIPTION AND FUNCTION OF EACH PART

Main unit

Door handle

Power switch

(Earth leakage breaker)

Control panel

Exhaust port

Power cable

4

Control Panel

⑪ f

⑪

⑪ e ⑪

⑪ b

⑪

⑪ c

⑯

⑭

⑫

⑨

②

①

④

③

⑮

⑤

⑧

⑩

⑥⑦

⑬

(1)

POWER

key:

(2)

MODE

key:

(3)

DISPLAY

key:

(4)

MENU

key:

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.

(5)

ENTER

key: Key to determine the input value of set value (temperature, time, hour, etc.), selection mode, execution segment No. etc.

(6)/(7) (

UP/DOWN

) key:

Key to change set value (temperature, time, hour, etc.) and to choose a selection from various parameters on the function menu.

(8)

ESCAPE

key:

Key to cancel the latest entry and recover the status that was valid prior to the making the latest selection.

(9) Main Display: It displays temperature measurements, set values (temperature, time, hour, etc.), program information, error information, etc.

(10) Sub Display: It displays set temperature, remaining time, current hour and execution segment No. etc.

It indicates an operation mode. (11) Operation monitor: a) (11) lamp: It flashes to indicate that the instrument is in the preoperational standby mode. pattern lamp: c) (11) lamp: d) (11) indicator lamp:

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

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:

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.

(16) Independent

Temperature

Overheating Prevention

Device:

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

REQUIREMENTS FOR INSTALLATION


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


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 is for the 220V use. It has not a power plug.

Choose a correct power distribution board.

z

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

Supply connections for the oven

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.

Install the Oven on a level area.

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

Or more

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.

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.

9

Precautions in handling

Substances that can be used

z

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

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

Do not put the foreign substances in the oven.

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.

Caution in taking out samples

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.

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

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 heated parts.


Do not climb on the oven

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 the oven

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

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.

Sample

z

Always put the samples on the attached shelves. Place sample so that it does not touch the interior wall of the chamber. z

Set the shelves on the shelf brackets that will accommodate the size of 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

•

Turn on the earth leakage breaker.

2.

Selection of operation menu

•

Press the MENU key several times to select desired operating method.

•

The present time is shown on the sub display.

•

Push the POWER key in the operation panel.

•

It allows you to enter each parameter into a flashing menu.

•

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

:

It is an operation method to bring the oven to the desired temperature and keep it steady.

Auto stop

Auto start

:

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


•

Push the MENU key and select the fixed temperature operation.

Input of set temperature

•

Push the ENTER key after making a sub-display display an arbitrary set temperature pushing

▲▼

keys.

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.

Push the MENU key.

Press either the

▲ key or the

▼

key several times.

Then, the desired set temperature will appear on the main display.

The lamp of the FIXED TEMP blinks.

Press either the

▲

key or the

▼ key several times.


•

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

Press the ENTER key.

•

The oven will start to run the fixed temperature operation to the renewed temperature.

Push the ENTER key.

•


14

AUTO START OPERATION INSTRUCTIONS


•

Select AUTO START mode by pushing the MENU key.

Inputting the set temperature

•

Press either the

▲

key or the

▼


ENTER key.

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.

Push the MENU key.

The operation menu lamp of an AUTO

START blinks.

Press either the

▲

key or the

▼

key several times.


Press either the

▲

key or the


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.


•

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


•

Press the MENU key and select the auto stop operation.


•

Push either the

▲

key or the

▼

key to blink the desired temperature on the main display and push the

ENTER key.


•

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 the MENU key. blinks.

The menu lamp of an AUTO STOP

Press either the

▲

key or the



•


Sub display

Push the ENTER key.

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

Press either the

▲

key or the


Then, the desired stop time (or hour) will appear on the main display.

Push the ENTER key.

After about 1 secon d

•

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.

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.

Press either the

▲

key or the

▼

key several times.

Either ON or OFF will appear on the main display.

It starts right after the auto stop operation is started.

(activate)

(inactive)


•

This operation activates the auto stop operation.

17

Programmed Operation Method


•

Press the MENU key and select the programmed operation.

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.

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 the MENU key.

The operation menu lamp of the

PROGRAM blinks.

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.

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.

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.


•

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.

Press MENU key several times.

•

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 (Temp.)

When auto-stop operation is selected

The main display flashes the temperature set by the previous auto-stop operation.


When program operation is selected

The main display flashes the previously set program number.

The sub-display shows (Program) The lamp blinks or lights.

•

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

Set temperature

Fixed temperature operation

Hour

Auto start operation

Standby

During operation

Remaining time

Hour

Set temperature

Remaining time (*

1

)

Hour

Auto stop operation

During operation

Set temperature

Remaining time (*

2

)

Hour

Hour

After time is up

Program operation

Standby

During operation

Remaining time

Hour

Set temperature

Remaining time

Hour

Execution segment (

*3

)

After finished

Hour

*1:

HOLD is displayed.

*2:

When the wait function is set to on, is displayed in the waiting status.

*3: T

he 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.

Press the mode key.

Select with the

▲

key or the

▼

key.

Main display Function

To input and edit the program.

Inputting and editing programs

Deleting the

Program.

Switching time setting mode.

Setting and releasing the key lock.

Alarm buzzer

ON/OFF function.

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.

Accumulating time display function

To display the total duration that the

POWER

key is on, within the range of 0 to 49999 hours.

Hold function

Date and current hour setting function.

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.

Calibration offset function

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

D

S

0

T

0

T

S

Sensor detection temperature

Fig. 1

y=ax+b

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

0

, D

0

) and (T

S

, D

S

) shown in Fig. 1.

Here, T

0

is the sensor detecting temperature when the chamber central temperature becomes the zero adjusting temperature

(normally room temperature is adopted) D

0

at the time of no load, T

S is the sensor detecting temperature when the chamber central temperature becomes the span adjustment temperature (normally working maximum temperature is adopted) D

S

at the time of no load 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


Parallel movement

In Fig. 2, D

SV

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

D

D

SV

PV

△

D

CAL equal to the target set temperature. D

PV

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

PV

and D

SV

including the sign is defined as the calibration offset. Therefore offset is shown as below.

T i

T

V

△

D

CAL

＝

D

PV

－

D

SV

Equation 1


Fig. 2

In Fig. 2,

Δ

D

CAL

becomes the negative value since the target set temperature D

SV

is larger than the actually measured temperature D

PV

. In order to conform the display temperature to the actually measured temperature, let the controller to recognize that the temperature in the chamber differs from the target set temperature by

Δ

D

CAL

.

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

Δ

D

CAL

is obtained from the Equation

1

(page22) as shown below.

△

D

CAL

＝

97

℃－

100

℃＝－

3

℃

Procedures to set the calibration offset

Δ

D

CAL

to the controller are shown as below.

Setting and changing the calibration offset value

•

Push the MODE key, and then push the key or the key several times to display main display.

on the



Push the key or the key several times

•

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

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 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

1. Earth leakage breaker

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*

Display

No Display

TROUBLE

lamp flashes.

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

, ,

Cause & Counter-measures

•

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.

⇒


•

Heater circuit is disconnected.

⇒


•

Incorrect setting of the independent

⇒ overheating prevention. correctly.

•

Heating of sample

⇒

Reduce the amount of the sample.

•

Malfunction of the independent overheating prevention circuit.

⇒


•

A malfunction of the main relay.

⇒


•

Contact Yamato Sciectific’s

Technical Service Department.

8. Automatic overheating preventive function

9. Key lock

10.

Memory backup circuit

11. Door switch flashes.

No Display

•

Heating of samples

⇒

Reduce amount of samples

Key lock display lamp lights up

•

This function prevents the disruption of operation due to incorrect operation. Leave it on during operation. (See section in this

No Display

flashes manual for setting and resetting methods on page 21).

•

It is not the fault.

⇒

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

POST

(

P

ower

O

n

S

elf

T

est) 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.

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:

0 to 399 o

C

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.

Activation/Setting Method

1. Set the independent overheating prevention 15 o

C higher than the set temperature of the main 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 o

C higher than the maximum temperature set value of the temperature 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.

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 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.

Periodic inspection of the safety component.

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)

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

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

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

z

If a problem occurs with the Drying

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 Drying 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).

Warranty Card (attached to your Oven)

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.

Minimum Inventory Period of Repair Parts

Repair parts will be available for at least 5 years after termination of our production of

Drying Oven Series. Repair parts mean the parts that are necessary to maintain the performance of the ovens.

29

TROUBLESHOOTING

Problem Cause/Solution

No display of current hour in the

•

Check if the power cable is firmly sub-display at the activation of the earth leakage breaker.

connected to a receptacle.

•

Check for power failure.

Temperature fluctuates during the operation

•

Does ambient temperature fluctuate violently?

•

Are there too many samples in the

It takes too much time for temperature to rise.

chamber?

•

Are the samples too moist?

•

Are there too many samples in the chamber?

30

SPECIFICATIONS

Model DN410H

Method

Forced Ventilation

Performance:

Operating temperature

Temperature stability*

1

４０～３６０℃

±０．２℃（＠３６０℃）

Temperature Uniformity

Time to reach max. temp.*

1

Structure:

Exterior

Interior chamber

±３．０℃（＠３６０℃）

Approx. 60 min.

Insulating material

Heater nominal capacity

Fan

Cable port

Exhaust Port

Controller:

Temperature control method

Temperature setting method

Cold rolled steel plate with baked-on melamine resin finish

Stainless steel (SUS304)

Glass wool and Ceramic fiber

3.0kW

Sirocco fan, Output:10W

×

2

Inner diameter 30 mm (right side)

Inner diameter 30 mm x 2 (rear face)

Temperature indicating method

Other indication

Timer

Operation function

Additional function

PID control by microprocessor

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.)


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.)


Heater circuit control

Sensor

Safety device

Internal dimensions (WxDxH)*

2

External dimensions (WxDxH)*

2

Triac zero cross system

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)

470 mm

×

450 mm

×

450 mm

640mm

×

695mm

×

930mm

Capacity

Weight

Power Requirements

Accessories:

Shelf / Shelf brackets

Instruction manual

95 l

Approx. 80 kg

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

2 sets

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

NOTES

: *

1. The values written on the chart have been measured with no sample and both exhaust ports closed in ambient temperature of 20

°

C.

*2. Both of internal and external dimensions do not include the one of protruding parts.

31

WIRING DIAGRAM

ELB

P1

1

AC200V

FM

H

2

3

4

5

CT

X1

TF

T1

T2

SSR3

J1

1

3

T1

T2

SSR1 J1

1

3

X1

TH

1

2

＋

+ -

－

J1

J2 J3

OH

1

J4

2

1

J5

2

J5

3

4

DSW

1

2

J1

1

3

J2

1

7

J3

1

3

J4

J19

1

40

1

3

J7

1

3

J10

1

3

J15

POWER1

1

1

J20

30

PIO

1

30

J20

40

J19

1

J34

10

SW

TC

＋

－

J23

1

2

3

4

J25

1

3

DS

TH

PI

1

3

J29

PLANAR

Symbol

CT

DS

DSW

Part Name

Current Transformer

Door switch

Digital switch

Symbol Part Name

PLANAR PLANAR board

POWER1 Power board

SW Membrane keypad

ELB

FM

Earth leakage breaker

Fan motor

H Heater

PI Photo-interrupter

SSR1,3 Solid-state relay

T Transformer prevention

P1 Terminal TH Thermocouple

X1 Relay

32

REPLACEMENT PARTS TABLE

Symbol Part Name Code No. Specifications

ELB Earth leakage breaker

2-06-005-0012 BJS30-3

FM Fan motor

H Heater

P

P1

Power code

Terminal block

2-14-001-0008 REK42A-4, AC200V

2-13-001-0010

2-07-023-0002

T3 - 3d

M011-0FX 4P

1-24-000-0024

POWER1 Power board

1-24-000-0059

1-24-000-0025 Type 1 overheat

LE prevention

Membrane keypad

TH Thermocouple

X1 Relay

1-01-320-0008 Type 4H

1-16-001-0042 K thermocouple (double sensor)

33

Reference

Explosives

Explosives

Substances

HAZARDOUS MATERIAL

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

3. Peracetic acid, Methyl ethyl ketone peroxide, Benzoyl peroxide, and other organic peroxides.

Combustible

Substances

Oxidants

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).

1. Potassium chlorate, Sodium chlorate, Ammonium chlorate, and other chlorates.

2. Potassium perchlorate, Sodium perchlorate, Ammonia perchlorate, and other perchlorates.

3. Potassium peroxide, Sodium peroxide, Barium peroxide, and other inorganic peroxides.

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

5. Sodium chlorite and other chlorites. Flammable s

Ignitable

6. Calcium hypochlorite and other hypochlorites.

Ethyl ether, Gasoline, Acetaldehyde, Propylene chloride,

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

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

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

30ºC.

•

Kerosene, Light oil, Turpentine oil, Isoamyl alcohol, Acetic acid, and flammable substances with a flash point between 30ºC and 65ºC

Gases Butane, and other gases that are flammable under 1 atmospheric pressure at 15ºC.

(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:

Symbol Meaning of Abbreviation Meaning of Symbol in the display Capital

A

B Alarm sound setting mode

C

D

E

F

H

L

Ｍ

O

P

R

S

# beep

Calibration delete program display end error # f. wt (Forced wait) hold hr. mn (hour. minute) lock mn. dy (month. day) off on

# program #

# program, segment repeat count real (real time) repeat rest time # ramp level repeat start

# ramp time #

#

# r. tim (real time) segment # soak time step

Calibration offset setting mode

Deleting a program

Sub display switching mode

Setting mode for program end

Error code #

Forced wait state after the power restoration

Hold function mode

Setting of time (hour, minute)

Panel locking mode

Setting of the date (month and day)

Make a function inactive

Make a function active

Program number

Ongoing program and ongoing segment

Repeat frequency setting mode

The hour

Repeat command mode

Rest for remaining time

Ramp level of Segment # (Desired set temperature)

Repeat start segment setting mode

Ramp time of Segment #

(Time required to reach the ramp level) the hour

Segment number

Soak time of Segment # (Holding time of the ramp level)

Not in Ramp Operation

T

W

Y

# wait wait # year

Wait function (Keep the operation until the desired temperature is achieved)

Wait function of Segment # the Christian era

35

Flowchart of Operational Procedures

Run “MENU”

Menu key


Program operation

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

Select the program number by using either the

key or the

key and then press the

ENTER key.

A feasible program number will appear on the main display.

Displays set temperatue

Set to your desired temperature by using either the

key or the

key.

ENTER key.

Press the ENTER key

Auto start

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

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

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

Set to your desired operation start time by using either the

key or the

key.

ENTER key

Press the ENTER key



key or the

key and then press the ENTER key.


key or the

key.

Auto stop

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



key or the




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

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

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.

Set the fan motion to

ON or OFF.

ENTER key.

Press the ENTER key

Select the wait function

Set the fan motion after the operation stopped.


ON or OFF.

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.

ENTER key.

Press the ENTER key

ENTER key.

36

Press the ENTER key

Program “MODE”

MODE

Main display

See the programming flowchart.

Inputting and deliting programs (ProG)

Programming

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

Deleting programs

ENTER key

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

▲ ▼

Select the programs number that you want delete.

ENTER key

ENTER key

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.

keys

In case of a period of time In case of the hour

ENTER key

ENTER key

Key lock setting/ releasing function

Select the key lock mode.

keys

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

The key action will get active.

ENTER key

keys

ENTER key

Alarm buzzer ON/OFF function

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

The alarm will be sounded.

The alarm will not be sounded.

ENTER key

Display

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

Accumulating time (Accm)

Diplay the total time for the power being on.

It will appear on the sub display.

ENTER key ENTER key

Set the Christian era

Date and current hour setting function (cLoK)

Set the date and hour.

key or the key.

ENTER key

Set the date by using either the

key or the

key.

ENTER key

Set the hour by using either the key or the

key.

ENTER key

Calibration off set function (cAL)

Display

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

▲ ▼

ENTER key

Change to your off set value by using either the key or the

key.

37

Flowchart for programming

Segment configuration

: Segments are made up of the following items, and must be input in this order.

Temperature

Ramp level

Ramp time Soak time

Time

Ramp time

Rising time

Ramp level

Target temperature

Soak time

Time held at ramp level

Wait function

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

(ON).

MODE

key

Press

▲ ▼

Key

Call up the program mode.

ENTER key

▲ ▼

Key

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

ENTER key

▲ ▼

Key

ENTER key

▲ ▼

Key

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

Note that this will appear in case of editing.

Input Ramp time.

Note: When you run this unit with full power, input

.

ENTER key

▲ ▼

Key

Input Ramp level.

ENTER key

▲ ▼

Key

ENTER key

▲ ▼

Key

Input Soak time.

Note: If there is no soak time (changing immediately to next temperature), input

0. To hold, select

Select wait function.

ENTER key

▲ ▼

Key

ENTER key

▲ ▼

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.

* Input all the settings in the same way.

When finished inputting all items, select for the ramp time, and press the

ENTER key.

ENTER key

▲ ▼

Key

Settings finished

38

INSTRUCTION MANUAL

FOR

DRYING OVEN

Model: DN610H

Version 2

Yamato Scientific Co., LTD.

Congratulations on your selection of Yamato Scientific’s Drying Oven!

Please read these operating instructions, user notes and the warranty card thoroughly before the initial operation of your drying 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 drying 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 Drying Oven from damage --

Negligence of this warning may result in damage to the Drying 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

DESCRIPTION AND FUNCTION OF EACH PART...................................................................................4

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

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

REQUIREMENTS FOR INSTALLATION...................................................................................................7

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

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

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

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

A

UTO

S

TOP

O

PERATION

M

ETHOD

..................................................................................................................16

P

ROGRAMMED

O

PERATION

M

ETHOD

.............................................................................................................18

SWITCHING 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

O

FFSET

F

UNCTION

..................................................................................................................22

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

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

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

P

URPOSES AND

O

PERATIONS OF

S

AFETY

D

EVICE AND

C

OUNTER

-

MEASURES

................................................24

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

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

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

M

AINTENANCE

P

ROCEDURE

..........................................................................................................................28

L

ONG

S

TORAGE AND

D

ISPOSAL

......................................................................................................................28

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

I

F A

S

ERVICE

C

ALL IS REQUIRED

: ..................................................................................................................29

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

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

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

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

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

HAZARDOUS MATERIAL..........................................................................................................................34

L

IST OF

S

YMBOLS IN THE DISPLAY

.................................................................................................................35

F

LOWCHART OF

O

PERATIONAL

P

ROCEDURES

................................................................................................36

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


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 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.


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

DESCRIPTION AND FUNCTION OF EACH PART

Main unit

Door handle

Power switch

(Earth leakage breaker)

Control panel

Exhaust port

Power cable

4

Control Panel

⑪ f

⑪

⑪ e ⑪

⑪ b

⑪

⑪ c

⑯

⑭

⑫

⑨

②

①

④

③

⑮

⑤

⑧

⑩

⑥⑦

⑬

(1)

POWER

key:

(2)

MODE

key:

(3)

DISPLAY

key:

(4)

MENU

key:

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.

(5)

ENTER

key: Key to determine the input value of set value (temperature, time, hour, etc.), selection mode, execution segment No. etc.

(6)/(7) (

UP/DOWN

) key:

Key to change set value (temperature, time, hour, etc.) and to choose a selection from various parameters on the function menu.

(8)

ESCAPE

key:

Key to cancel the latest entry and recover the status that was valid prior to the making the latest selection.

(9) Main Display: It displays temperature measurements, set values (temperature, time, hour, etc.), program information, error information, etc.

(10) Sub Display: It displays set temperature, remaining time, current hour and execution segment No. etc.

It indicates an operation mode. (11) Operation monitor: a) (11) lamp: It flashes to indicate that the instrument is in the preoperational standby mode. pattern lamp: c) (11) lamp: d) (11) indicator lamp:

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

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:

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.

(16) Independent

Temperature

Overheating Prevention

Device:

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

REQUIREMENTS FOR INSTALLATION


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


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 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.

Supply connections for the oven

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.

Install the Oven on a level area.

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

Or more

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.

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.

9

Precautions in handling

Substances that can be used

z

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

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

Do not put the foreign substances in the oven.

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.

Caution in taking out samples

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.

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

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 heated parts.


Do not climb on the oven

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 the oven

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

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.

Sample

z

Always put the samples on the attached shelves. Place sample so that it does not touch the interior wall of the chamber. z

Set the shelves on the shelf brackets that will accommodate the size of 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

•

Turn on the earth leakage breaker.

2.


•

Press the MENU key several times to select desired operating method.

•

The present time is shown on the sub display.

•

Push the POWER key in the operation panel.

•

It allows you to enter each parameter into a flashing menu.

•

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

:

It is an operation method to bring the oven to the desired temperature and keep it steady.

Auto stop

Auto start

:

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


•

Push the MENU key and select the fixed temperature operation.

Input of set temperature

•

Push the ENTER key after making a sub-display display an arbitrary set temperature pushing

▲▼

keys.

Changing the set temperature when fixed temp operation is in progress

•

Push either the

▲

key or the

▼


ENTER key.

Push the MENU key.

Press either the

▲ key or the

▼

key several times.


The lamp of the FIXED TEMP blinks.

Press either the

▲

key or the



•

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


•


Push the ENTER key.

•


14

AUTO START OPERATION INSTRUCTIONS


•

Select AUTO START mode by pushing the MENU key.


•

Press either the

▲

key or the

▼


ENTER key.


•

Press either the

▲

key or the

▼

key to blink start time

(or the hour) on the main display, and press the

ENTER key.

Push the MENU key.

The operation menu lamp of an AUTO

START blinks.

Press either the

▲

key or the

▼

key several times.


Press either the

▲

key or the


Then, the desired start time (or hour) will appear on the main display.

•


Sub display

Press The ENTER key.


•


•

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


•

Press the MENU key and select the auto stop operation.


•

Push either the

▲

key or the

▼

key to blink the desired temperature on the main display and push the

ENTER key.


•

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 the MENU key. blinks.

The menu lamp of an AUTO STOP

Press either the

▲

key or the



•


Sub display

Push the ENTER key.

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

Press either the

▲

key or the


Then, the desired stop time (or hour) will appear on the main display.

Push the ENTER key.

After about 1 secon d

•

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.

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.

Press either the

▲

key or the

▼

key several times.

Either ON or OFF will appear on the main display.

It starts right after the auto stop operation is started.

(activate)

(inactive)


•

This operation activates the auto stop operation.

17

Programmed Operation Method


•

Press the MENU key and select the programmed operation.

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.

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 the MENU key.

The operation menu lamp of the

PROGRAM blinks.

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.

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.

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.


•

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.

Press MENU key several times.

•

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.


When auto-stop operation is selected

The main display flashes the temperature set by the previous auto-stop operation.


When program operation is selected

The main display flashes the previously set program number.

The sub-display shows (Program) The lamp blinks or lights.

•

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

Set temperature


Hour

Auto start operation

Standby

During operation

Remaining time

Hour

Set temperature

Remaining time (*

1

)

Hour

Auto stop operation

During operation

Set temperature

Remaining time (*

2

)

Hour

Hour

After time is up

Program operation

Standby

During operation

Remaining time

Hour

Set temperature

Remaining time

Hour

Execution segment (

*3

)

After finished

Hour

*1:

HOLD is displayed.

*2:

When the wait function is set to on, is displayed in the waiting status.

*3: T

he 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.

Press the mode key.

Select with the

▲

key or the

▼

key.

Main display Function

To input and edit the program.

Inputting and editing programs

Deleting the

Program.

Switching time setting mode.

Setting and releasing the key lock.

Alarm buzzer

ON/OFF function.

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.

Accumulating time display function

To display the total duration that the

POWER

key is on, within the range of 0 to 49999 hours.

Hold function

Date and current hour setting function.

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


D

D

S

0

T

0

T

S


Fig. 1

y=ax+b

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

0

, D

0

) and (T

S

, D

S

) shown in Fig. 1.

Here, T

0

is the sensor detecting temperature when the chamber central temperature becomes the zero adjusting temperature

(normally room temperature is adopted) D

0

at the time of no load, T

S is the sensor detecting temperature when the chamber central temperature becomes the span adjustment temperature (normally working maximum temperature is adopted) D

S

at the time of no load 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


Parallel movement

In Fig. 2, D

SV

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

D

D

SV

PV

△

D

CAL equal to the target set temperature. D

PV

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

PV

and D

SV

including the sign is defined as the calibration offset. Therefore offset is shown as below.

T i

T

V

△

D

CAL

＝

D

PV

－

D

SV

Equation 1


Fig. 2

In Fig. 2,

Δ

D

CAL

becomes the negative value since the target set temperature D

SV

is larger than the actually measured temperature D

PV

. In order to conform the display temperature to the actually measured temperature, let the controller to recognize that the temperature in the chamber differs from the target set temperature by

Δ

D

CAL

.

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

Δ

D

CAL

is obtained from the Equation

1

(page22) as shown below.

△

D

CAL

＝

97

℃－

100

℃＝－

3

℃

Procedures to set the calibration offset

Δ

D

CAL

to the controller are shown as below.

Setting and changing the calibration offset value

•

Push the MODE key, and then push the key or the key several times to display main display.

on the




•

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

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 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

1. Earth leakage breaker

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*

Display

No Display

TROUBLE

lamp flashes.

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

flashes.

TROUBLE

lamp flashes

, ,

Cause & Counter-measures

•

Power circuit interrupted

•

Erases all displays

⇒

Report to our service office and check the cause of the problem.

•

Break in temperature sensor circuit.

⇒


•

Short circuit in triac.

⇒


•

Heater circuit is disconnected.

⇒


•

Incorrect setting of the independent

⇒ overheating prevention. correctly.

•

Heating of sample

⇒

Reduce the amount of the sample.

•

Malfunction of the independent overheating prevention circuit.

⇒


•

A malfunction of the main relay.

⇒


•

Contact Yamato Sciectific’s

Technical Service Department.

8. Automatic overheating preventive function

9. Key lock

10.

Memory backup circuit

11. Door switch flashes.

No Display

•

Heating of samples

⇒

Reduce amount of samples

Key lock display lamp lights up

•

This function prevents the disruption of operation due to incorrect operation. Leave it on during operation. (See section in this

No Display

flashes manual for setting and resetting methods on page 21).

•

It is not the fault.

⇒

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

POST

(

P

ower

O

n

S

elf

T

est) 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.

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:

0 to 399 o

C

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.

Activation/Setting Method

1. Set the independent overheating prevention 15 o

C higher than the set temperature of the main 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 o

C higher than the maximum temperature set value of the temperature 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.

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 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.

Periodic inspection of the safety component.

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)

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

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

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

z

If a problem occurs with the Drying

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 Drying 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).

Warranty Card (attached to your Oven)

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.

Minimum Inventory Period of Repair Parts

Repair parts will be available for at least 5 years after termination of our production of

Drying Oven Series. Repair parts mean the parts that are necessary to maintain the performance of the ovens.

29

TROUBLESHOOTING

Problem Cause/Solution

No display of current hour in the

•

Check if the power cable is firmly sub-display at the activation of the earth leakage breaker.

connected to a receptacle.

•

Check for power failure.

Temperature fluctuates during the operation

•

Does ambient temperature fluctuate violently?

•

Are there too many samples in the

It takes too much time for temperature to rise.

chamber?

•

Are the samples too moist?

•

Are there too many samples in the chamber?

30

SPECIFICATIONS

Model DN610H

Method

Forced Ventilation

Performance:

Operating temperature

Temperature stability*

1

４０～３６０℃

±０．２℃（＠３６０℃）

Temperature Uniformity

Time to reach max. temp.*

1

Structure:

Exterior

Interior chamber

±３．０℃（＠３６０℃）

Approx. 60 min.

Insulating material

Heater nominal capacity

Fan

Cable port

Exhaust Port

Controller:

Temperature control method

Temperature setting method

Cold rolled steel plate with baked-on melamine resin finish

Stainless steel (SUS304)

Glass wool and Ceramic fiber

4.0kW

Sirocco fan, Output:10W

×

2

Inner diameter 30 mm (right side)

Inner diameter 30 mm x 2 (rear face)

Temperature indicating method

Other indication

Timer

Operation function

Additional function

PID control by microprocessor

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.)


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.)


Heater circuit control

Sensor

Safety device

Triac zero cross system


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

Internal dimensions (WxDxH)*

2

External dimensions (WxDxH)*

2

Capacity

Weight

Power Requirements

Accessories:

Shelf / Shelf brackets

Instruction manual

Independent Temperature Overheat Prevention device

(Digital switch input system, setting temperature range: 0 to 399

°

C)

620 mm × 600 mm × 600 mm

790mm

×

845mm

×

1080mm

223

l

Approx. 120 kg

AC 200 V, 50/60Hz, 21A single phase

2 sets

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

NOTES

: *

1. The values written on the chart have been measured with no sample and both exhaust ports closed in ambient temperature of 20

°

C.

*2. Both of internal and external dimensions do not include the one of protruding parts.

31

WIRING DIAGRAM

Symbol

CT1

ELB

Part Name

Current Transformer

Symbol

PCB3

Part Name

Power board

Earth leakage breaker PCB4 Independent prevention

H Heater

LS Door switch

PI1,2 Photo-interrupter

SSR1,2,3 Solid-state relay

SW Membrane keypad

Tf Transformer

TH Thermocouple

X1 Relay

32

REPLACEMENT PARTS TABLE

Symbol Part Name Code No. Specifications

ELB

FM

P

P1,2

Earth leakage breaker

2-06-005-0012 BJS30-3(AC200V)

Fan motor

H Heater

Power code

Terminal block

2-14-000-0003

2-13-001-0010

2-07-023-0002

REK42M-4CCW, AC200V

T3 - 3d

M011-0FX 4P

1-24-000-0024

PCB3 1-24-000-0025 Type 1 Power board prevention

SW Membrane keypad

TH Thermocouple

X1 Relay

1-01-320-0008

1-16-001-0042

Type 4H


33

Reference

Explosives

Explosives

Substances

HAZARDOUS MATERIAL

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

3. Peracetic acid, Methyl ethyl ketone peroxide, Benzoyl peroxide, and other organic peroxides.

Combustible

Substances

Oxidants

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).

1. Potassium chlorate, Sodium chlorate, Ammonium chlorate, and other chlorates.

2. Potassium perchlorate, Sodium perchlorate, Ammonia perchlorate, and other perchlorates.

3. Potassium peroxide, Sodium peroxide, Barium peroxide, and other inorganic peroxides.

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

5. Sodium chlorite and other chlorites. Flammable s

Ignitable

6. Calcium hypochlorite and other hypochlorites.

Ethyl ether, Gasoline, Acetaldehyde, Propylene chloride,

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

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

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

30ºC.

•

Kerosene, Light oil, Turpentine oil, Isoamyl alcohol, Acetic acid, and flammable substances with a flash point between 30ºC and 65ºC

Gases Butane, and other gases that are flammable under 1 atmospheric pressure at 15ºC.

(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:

Symbol Meaning of Abbreviation Meaning of Symbol in the display Capital

A

B Alarm sound setting mode

C

D

E

F

H

L

Ｍ

O

P

R

S

# beep

Calibration delete program display end error # f. wt (Forced wait) hold hr. mn (hour. minute) lock mn. dy (month. day) off on

# program #

# program, segment repeat count real (real time) repeat rest time # ramp level repeat start

# ramp time #

#

# r. tim (real time) segment # soak time step

Calibration offset setting mode

Deleting a program

Sub display switching mode

Setting mode for program end

Error code #

Forced wait state after the power restoration

Hold function mode

Setting of time (hour, minute)

Panel locking mode

Setting of the date (month and day)

Make a function inactive

Make a function active

Program number

Ongoing program and ongoing segment

Repeat frequency setting mode

The hour

Repeat command mode

Rest for remaining time

Ramp level of Segment # (Desired set temperature)

Repeat start segment setting mode

Ramp time of Segment #

(Time required to reach the ramp level) the hour

Segment number

Soak time of Segment # (Holding time of the ramp level)

Not in Ramp Operation

T

W

Y

# wait wait # year

Wait function (Keep the operation until the desired temperature is achieved)

Wait function of Segment # the Christian era

35

Flowchart of Operational Procedures

Run “MENU”

Menu key


Program operation

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

Select the program number by using either the

key or the

key and then press the

ENTER key.

A feasible program number will appear on the main display.



key or the

key.

ENTER key.

Press the ENTER key

Auto start

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




key or the

key.

ENTER key

Press the ENTER key



key or the



key or the

key.

Auto stop

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



key or the




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

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

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.


ON or OFF.

ENTER key.

Press the ENTER key

Select the wait function

Set the fan motion after the operation stopped.


ON or OFF.

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.

ENTER key.

Press the ENTER key

ENTER key.

36

Press the ENTER key

Program “MODE”

MODE

Main display

See the programming flowchart.

Inputting and deliting programs (ProG)

Programming

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

Deleting programs

ENTER key

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

▲ ▼

Select the programs number that you want delete.

ENTER key

ENTER key

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.

keys

In case of a period of time In case of the hour

ENTER key

ENTER key

Key lock setting/ releasing function

Select the key lock mode.

keys

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

The key action will get active.

ENTER key

keys

ENTER key

Alarm buzzer ON/OFF function

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

The alarm will be sounded.

The alarm will not be sounded.

ENTER key

Display

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

Accumulating time (Accm)

Diplay the total time for the power being on.

It will appear on the sub display.

ENTER key ENTER key

Set the Christian era

Date and current hour setting function (cLoK)

Set the date and hour.

key or the key.

ENTER key

Set the date by using either the

key or the

key.

ENTER key

Set the hour by using either the key or the

key.

ENTER key

Calibration off set function (cAL)

Display

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

▲ ▼

ENTER key

Change to your off set value by using either the key or the

key.

37

Flowchart for programming

Segment configuration

: Segments are made up of the following items, and must be input in this order.

Temperature

Ramp level

Ramp time Soak time

Time

Ramp time

Rising time

Ramp level

Target temperature

Soak time

Time held at ramp level

Wait function

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

(ON).

MODE

key

Press

▲ ▼

Key

Call up the program mode.

ENTER key

▲ ▼

Key

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

ENTER key

▲ ▼

Key

ENTER key

▲ ▼

Key

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

Note that this will appear in case of editing.

Input Ramp time.

Note: When you run this unit with full power, input

.

ENTER key

▲ ▼

Key

Input Ramp level.

ENTER key

▲ ▼

Key

ENTER key

▲ ▼

Key

Input Soak time.

Note: If there is no soak time (changing immediately to next temperature), input

0. To hold, select

Select wait function.

ENTER key

▲ ▼

Key

ENTER key

▲ ▼

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.

* Input all the settings in the same way.

When finished inputting all items, select for the ramp time, and press the

ENTER key.

ENTER key

▲ ▼

Key

Settings finished

38

Yamato DN410H/610H Constant Temperature Oven Operation Manual

DRYING OVEN

Version 2

Sample

Modification

INSTRUCTION MANUAL

FOR

DRYING OVEN

Version 2

Sample

Modification

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