Yamato Scientific DKG610/610V/650/650V/810/810V/850/850V Operating instructions

Rapid Heating / Cooling Oven

Model:DKG610(V)/650(V)

Model:DKG810(V)/850(V)

Instruction Manual

Second Version

● Thank you very much for purchasing this Yamato

DKG Series.

● Please read the “Operating Instructions” and

“Warranty” before operating this unit to assure proper

operation. After reading these documents, be sure to

store them securely together with the “Warranty” at a

handy place for future reference.

Warning:

Before operating the unit, be sure to read

carefully and fully understand important

warnings in the operating instructions.

Yamato Scientific Co., Ltd.

This paper has been printed on recycled paper.

Contents

1. Safety precautions.................................................................. 1

Explanation of pictograms ............................................................. 1

List of symbols ....................................................................... 2

Warning・Cautions ................................................................... 3

2. Before operating the unit ............................................................ 4

Precautions when installing the unit ..................................................... 4

Installation procedures/precautions...................................................... 9

3. Names and Functions of Parts ...................................................... 10

Main unit ........................................................................... 10

Structural diagram ................................................................... 12

Operation panel ..................................................................... 13

Description of characters ............................................................. 14

4. Operating Procedures.............................................................. 16

List of operation modes and functional menus ........................................... 16

Operation mode and function setting keys and characters ................................. 18

Setting of the overheat preventive device ............................................... 19

Operation steps（Fixed temp operation） ............................................... 20

Operation steps（Quick Auto Stop operation）........................................... 21

Operation steps（Auto Stop operation） ................................................ 22

Operational steps（Auto Start operation） .............................................. 24

Creating a program .................................................................. 26

Program repeat operation............................................................. 31

Program sheet ...................................................................... 32

Useful functions（calibration offset function）............................................ 34

Useful function（Lock function）....................................................... 35

Useful function（

External alarm output） ............................................... 36

Useful functions (Output terminal) ...................................................... 37

Option (Overheat preventive unit) ...................................................... 39

Option (RS485 communication function) ................................................ 40

5. Handling Precautions .............................................................. 52

6. Maintenance procedures ........................................................... 54

Daily inspection/maintenance.......................................................... 54

7. When the unit is not to be used for a long time or when disposing...................... 55

When the unit is not to be used for a long time or when disposing........................... 55

Notes about disposition............................................................... 55

8. Troubleshooting................................................................... 56

Safety device and error codes ......................................................... 56

When a malfunction is suspected ...................................................... 57

9. After sales service and warranty .................................................... 58

When requesting a repair ............................................................. 58

10. Specifications.................................................................... 59

11. Wiring diagram ................................................................... 61

12. Replacement parts list ............................................................ 63

13. List of dangerous materials........................................................ 65

14. Standard installation manual....................................................... 66

1

1. Safety precautions

Explanation of pictograms

About pictograms

A

variety of pictograms are indicated in this operating instruction and on

products for safe operation. Possible results from improper operation

ignoring them are as follows.

Be sure to fully understand the descriptions below before proceeding to the

text.

Warning

Caution

Indicates a situation which may result in minor injury (Note 2) and

property damages (Note 3.)

（

Note 1

）

Serious injury means a wound, an electrical shock, a bone fracture or intoxication that ma

y

leave after effects or require hospitalization or outpatient visits for a long time.

（

Note 2

）

Minor injury means a wound or an electrical shock that does not require hospitalization o

r

outpatient visits for a long time.

（

Note 3

）

Property damage means damage to facilities, devices and buildings or other properties.

Meanings of pictograms

This pictogram indicates a matter that encourages the user to adhere to warning

(“caution” included).

Specific description of warning is indicated near this pictogram.

This pictogram indicates prohibitions

Specific prohibition is indicated near this pictogram.

This pictogram indicates matters that the user must perform

Specific instruction is indicated near this pictogram.

Indicates a situation which may result in death or serious injury (Note 1.)

2

1. Safety precautions

List of symbols

Warning

General warnings

Danger!: High

voltage

Danger!: High

temperature

Danger!: Moving

part

Danger!: Hazard

of explosion

Caution

General cautions Electrical shock! Burning!

Caution for no

liquid heating!

Caution for water

leak!

For water only

Poisonous

material

Prohibitions

General bans Fire ban

Do not

disassemble

Do not touch

Compulsions

General

compulsions

Connect ground

wire

Install levelly

Pull out the power

plug

Regular

inspection

3

1. Safety precautions

Warning・Cautions

Warning

Never operate the unit in an atmosphere containing flammable or explosive gas

Never operate the unit in an atmosphere containing flammable or explosive gas.

Otherwise, an explosion or a fire may result since the unit is not explosion-proof.

See section “13. List of dangerous materials” on page65.

Be sure to connect the ground wire.

Be sure to connect the ground wire correctly. Otherwise, electrical leak may result and cause an

electrical shock or a fire.

Ban on operation when an abnormality occurs

When a smoke or an unusual odor is seen or sensed, immediately turn the ELB on the main unit

off and pull out the power plug. A fire or an electrical shock may result.

Never use electrical power cords bundled.

When these are used bundled, they might overheat causing a fire.

Take care not to damage electrical power cords.

Avoid tightly bend, pull with a strong force or twist to prevent electrical power cords from

damaging. A fire or an electrical shock may result.

Never use an explosive or a flammable material with this unit.

Never use an explosive material, a flammable material or a material containing them. An

explosion or an electrical shock may result.

See section “13. List of dangerous materials” on page 65.

Never try to touch a hot part.

Some parts of the unit are hot during and immediately after operation. Take special care for

possible burning.

Never try to disassemble or alter the unit.

Never try to disassemble or alter the unit. A malfunction, a fire or an electrical shock may result.

Caution

When a thunder is heard.

When a thunder is heard, turn the main power off immediately. A malfunction, fire or an electrical

shock may result.

4

2. Before operating the unit

Precautions when installing the unit

1. Carefully select an installation site.

Take special care not to install the unit at a place described below:

・ Uneven surfaces or dirty surfaces

・ Where flammable gas or corrosive gas exists

・ Where the ambient temperature is 35℃ or more

・ Where temperature changes severely

・ Where dusty and humidity is high

・ Where subject to direct sunlight

・ Where vibration is severe

Install this unit at a place with spaces shown below.

2. Install the unit on a level surface.

Install the unit on a level surface. If the whole bottom surface of the unit does not contact the

surface evenly, vibrations or noises may result. This might cause unexpected troubles or

malfunctions.

The unit weight: DKG610(V)/650(V): Approx.110 ㎏, DKG810(V)/850(V): Approx.155 ㎏

When lifting the unit for transportation and installation, carefully handle it by at least two

people.

3. Installation

The unit might fall down or move by an earthquake or an impact resulting a personal injury.

We recommend making safety measures such as to avoid installing the unit at a place other

than busy places.

Main

Body

80 ㎝ or more

20 ㎝ or more 20 ㎝ or more

80 ㎝ or more

5

2. Before operating the unit

Precautions when installing the unit

4. Secure sufficient ventilation for the unit.

Do not operate the unit when suction port and heat radiation port on the side and rear panels

are blocked.

Internal temperature of the unit will rise degrading the performance and an accident, a

malfunction or a fire may result.

5. Do not operate the unit at such a place that may subject to splash.

Do not operate the unit at such a place that may subject to splash. Liquid entering the inside

may cause an accident, a malfunction, an electrical shock or a fire.

6. Never operate the unit in an atmosphere containing flammable or explosive gas.

Never operate the unit in an atmosphere containing flammable or explosive gas. Since the

unit is not explosion-proof, an arc is discharged when switching the ELB “ON(|)” and

“OFF(○)” and during operation and a fire or an explosion may result.

See the section “13. List of dangerous materials” on page 65 for flammable and explosive

gases.

Explosive gases

Flammable gases

6

2. Before operating the unit

Precautions when installing the unit

7. Be sure to connect the power plug to the dedicated power distribution panel or

a wall outlet.

Use a power distribution panel or a wall outlet that meets the electrical capacity of the unit.

Electrical

capacity:

DKG610（V） AC200V-220V 13.3±10%～14.6±10% A

DKG650（V） AC230V-240V 11.6±10%～12.1±10% A

DKG810（V） AC200V-220V 18.5±10%～20.3±10% A

DKG850（V） AC230V-240V 16.2±10%～16.8±10% A

＊ When the unit will not start even when you turn the Electric Leakage Breaker to “ON(|)”,

check for low main voltage or if the unit is connected to the same power supply line as other

devices and connect it to another line if necessary.

Avoid connecting too many devices using a branching outlet or extending a wire with a cord reel

or heating function and temperature controlling function may degrade due to voltage drop.

Do not connect the unit to any parts or lines other than a correct power supply line such as a

gas pipe, a water pipe or a telephone line.

Otherwise, an accident or a malfunction may result.

8. Handling of a power cord

Never use electrical power cords bundled. When these are used bundled, they might

overheat causing a fire.

Do not convert, forcibly bend, twist or pull the power cord. Otherwise, a fire or an electrical

shock may result.

Do not place the power cord under a desk or a chair, or sand between objects to avoid it

from being damaged.

Otherwise, a fire or an electrical shock may result.

Do not place the power cord close to a stove or other heat generating device. Sheath of the

cord may burn and result in a fire or an electrical shock.

If the power cord should be damaged (exposure of core wire or disconnection), immediately

turn the ELB off (○), turn the power supply off and ask your dealer to replace the cord. If

the unit is operated with a damaged power cord, a fire or an electrical shock may result.

Connect the power cord to an appropriate wall outlet or distribution board.

9. Be sure to connect the ground wire.

・ When the unit has no ground terminal, class D grounding work is necessary and please

consult your dealer or our nearest sales office.

・ Securely connect to an outlet.

The unit does not have a power plug. Connect

the earth correctly to suit the power facility to

be connected.

Do not connect the grounding wire to any parts or lines other than a correct grounding

terminal such as a gas pipe, a water pipe or a telephone line.

Otherwise, an accident or a malfunction may result.

M5 round

terminal

Green

(

to eart

h

terminal

)

Bl

ac

k

(

to rate

d

power

terminal

)

Whi

te

(

to rate

d

power

terminal)

7

2. Before operating the unit

Precautions when installing the unit

10. Be careful for the colors of core wires when connecting the power cords.

Be sure to first make sure that the breaker on the power

facility side is “Off (○)” before connecting the power

cords.

The unit does not have a power plug. Select and connect

a plug and a terminal with correct ratings suited to the

power source capacity of the power facility to be

connected. (See the table in the right)

Core wire

color

Indoor wiring

Black Voltage side

White Earth side

Green Earth

11. .Do not attempt to alter the unit 12. Do not put too many specimens.

The customer shall never attempt to alter

the unit. Otherwise a malfunction may

result.

The withstand load of a shelf board is 15kg

when the load is evenly distributed.

Put specimens dispersed.

When shelf boards have been placed on all

stages, take care not to exceed the total

withstand load.

《Total withstand load》

DKG610(V),DKG650(V)：45Kg or less

DKG810(V),DKG850(V)：75Kg or less

Specimen

15kg

Shelf board

13. Do not set too many specimens. 14. Do not place an object on the

bottom plate.

Too many specimens will prevent correct

temperature control. In order to assure

temperature precision, be sure to use shelf

boards and put specimens dispersed, and

secure at least 30% of space inside the

bath.

Secure at least 30% of space

Operating the unit with placing the

specimen directly on the bottom plate of the

internal bath will prevent performance of

the product from fully exerting, increase the

internal temperature excessively and may

cause a malfunction.

Never place a specimen on the bottom

plate of the internal bath.

See “15. Installing shelf boards and placing

specimen” on P8.

MODIFICATION

8

2. Before operating the unit

Precautions when installing the unit

15. Placing shelf boards and specimens

Shapes of shelf boards will differ depending on the model and each model contains two or

four boards.

One of them has been fixed on the lowest stage of the shelf peg pillars inside the unit with

screws at the time of factory shipping.

Set the remaining shelf boards to appropriate positions in the unit.

One of the shelf boards has been

fixed on the lowest stage of the shelf

peg pillars inside the unit with screws

at the time of factory shipping.

A heater and a fan are installed under

the rectifier plate. And temperature of

the rectifier plate and around it is

always higher than the set

temperature and if you place a

specimen directly on the plate, it may

burn or a fire may result.

Slit at the front side of the rectifier

plate is the suction slit of the hot air

convection route. Never block this slit

with a specimen or other objects.

For this reason, the shelf boards are

held with screws as shown in the

drawing to prevent specimens from

being placed directly.

If you need to remove shelf boards

due to the shape of a specimen to

set, secure sufficient space to the

rectifier plate and never place the

specimen directly.

16. About handling of the exhaust port (manual damper)

The exhaust port is located at the rear of the main unit. While the manual damper is used, hot

air will be exhaust at the port. So be sure to connect the exhaust duct and assure sufficient

space behind the back of the main unit. The exhaust port and around it will become hot and

take sufficient care for burning.

Exhaust port flange dia.：Φ80mm

Air amount when damper is fully opened（environmental temp.：23℃, at no load, in-bath

temp：25℃）

DKG610(V)，DKG650(V)：1.5 ㎥/min

DKG810(V)，DKG850(V)：1.4 ㎥/min

About ventilating operation

When you attempt to increase temperature with the manual damper open, note that the

target temperature may not be reached depending on the openness of the damper, the

environmental temperature, or the amount of specimen.

（Temperature can be raised up to 260℃ at environmental temp：23℃，no-load, and up to

50% of damper openness. Note that the temperature rise time is not guaranteed.）

See ”3.Names and functions of parts” on P10 & 11.

Shelf pilla

r

Rectifying

board

Shelf peg

Screw

Shelf board

Screw

9

Precautions when Installing the Unit

Installation procedures/precautions

(1)

Release the stopper lock of the caster wheels.

Set the stoppers of the caster wheels to the

high position as shown in the drawing in the

right.

Now the lock is released.

（Only two caster wheels at the front of the

unit have stoppers.）

キャスター

ストッパー

ロック

ロック解除

(2) Transport the unit to the installation site.

* Transporting the unit over a gap may give an excessive shock to the caster wheels and

may damage them.

If such trouble is expected, lift the unit and transport it over the gap.

(3) Lock the caster stoppers when the unit has been transported to the installation site.

They are locked.

(4) Connection of the power supply.

Make sure that the ELB is “OFF(○)” before connecting the power supply to the power

distribution board and the outlet.

※(1),(2),and (3) are for DKG810(V)/DKG850(V) only.

Lock release

Lock

Stopper

Caster

10

3. Names and Functions of Parts

Main unit

DKG610 (V)/650(V)

Exhaust port（Φ80mm）

Cable port

Alarm output terminal (standard)

Optional part port

Temp. Output (4-20mA)

External com (RS485)

Shelf board

ELB

Ope

r

ation panel

Door

Handle

Temperature sensor

access

p

ort

Power cord

Manual damper

operation assembly

Rating nameplate

Serial # name

p

late

Radiation

p

ort

Exhaust damper access

port and optional part (auto

damper) connection port

11

3. Names and Functions of Parts

Main unit

Front of DKG810 (V)/850(V)

Operation panel

Door

Handle

ELB

Cable port

Shelf board

Caster wheels: at 4 points

（ Two front wheels have

locks.）

Temperature sensor access

p

ort

Power cord

Alarm output terminal (standard)

Optional part port

Temp. Output (4-20mA)

External com (RS485)

Exhaust port

（

Φ

80

mm

）

Manual damper

operation assembly

Rating nameplate

Serial # nameplate

Radiation port

Exhaust damper access port

and optional part (auto damper)

connection port

12

3.Names and Functions of Parts

Structural diagram

The air supply port and the exhaust port are linked for the supply/exhaust system of this unit. Four

openness levels are available: 25％, 50％, 75％, and 100％. At full open, or 100％ of openness, total

supply/exhaust will be complete external air displacement, which will improve cooling efficiency. When

operation is finished and you want to start cooling operation, first press the STOP button and then

start damper operation. During displacement operation (damper is opened during operation), the

target temperature may not be reached and adjust damper openness according to the specific

conditions.

※Average measured value for 5 points on the exhaust port looked from above.

Inside the bath

Door

Damper control

assembly

Circulation fan motor

Heater

Control sensor

During regular operation (Damper

o

p

enness: 0%）

Exhaust portφ80

Air supply port

Exhaust flow at different damper openness (environmental temp: 23℃, no-load, in-bath temp：25℃)※

0% (full close) 25% 50% 75 100%(full open)

600 type 0.0 ㎥/min 0.1 ㎥/min 0.1 ㎥/min 0.3 ㎥/min 1.5 ㎥/min

800 type 0.0 ㎥/min 0.1 ㎥/min 0.1 ㎥/min 0.5 ㎥/min 1.4 ㎥/min

During exhaust operation (Damper openness: 100%)

Exhaust: From A through internal bath side BOX and exhausted at B

Exhaust port

measurement points: 5

13

3. Names and Functions of Parts

Operation panel

MEASURED TEMP.

℃

HEATER

ENTER

SET

TEMP.

OVER TEMP.

RUN

STOP

SUB

MENU

TIMER

FIXED

TEMP.

PROGRAM

PROTECTOR

ALARM

AUTO STOP

AUTO START

FIXED TEMP.

PROGRAM

No Name Operation／action

① RUN/STOP Key This key is used to start/stop operation.

② ▽，△ Key These keys are used to select a setting.

③ ENTER Key This key is used to determine a setting you selected.

④ FIXED TEMP. Key This key is used to select the fixed temperature operation.

⑤ TIMER Key This key is used to select the timer operation.

You can select from quick auto stop operation, auto stop operation, and

auto start operation.

⑥ PROGRAM Key This key is used to make a program and to select program operation.

You can set a program fro m 3 types, 6 patterns.

⑦ SUB MENU Key This key is used to set overheat preventive device temperature, a

temperature for calibration offset, key lock, and the program repeat

function.

⑧ HEATER Lamp This lamp comes on while power is supplied to the heater.

⑨ ALARM Lamp Buzzer sounds and this lamp come on when an error occurs.

⑩ AUTO STOP Lamp This lamp flashes during quick auto stop timer setting and stays on

during operation.

This lamp flashes during auto stop timer setting and stays on during

operation.

⑪ AUTO START Lamp This lamp flashes during auto start time setting and stays on during

operation.

⑫ FIXED TEMP. Lamp This lamp flashes during fixed temp operation setting and stays on during

operation.

⑬ PROGRAM Lamp This lamp flashes during program operation setting and stays on during

operation.

⑭ MEASURED TEMP.

Display

The display indicates measured in-bath temperature, setting characters,

and alarm information.

⑮ SET TEMP. Display The display indicates a set temperature, timer setting, and timer

remaining time.

⑯ OVER TEMP.

PROTECTOR

Display

The display indicates a set temperature of the overheat preventive

device.

⑭

⑧

⑨

⑩

⑪

⑫

⑬

③

④

②

⑤

⑮

⑯

①

⑦

⑥

14

3. Names and Functions of Parts

Description of characters

Characters used on the controller of this unit are described here.

Characters Identifier Name Application

Fix

Fixed Temp operation

setting

This means Fixed Temp operation

settings.

Sv Temperature setting This is used to set a temperature.

AStP Auto Stop setting

This is used to set Auto Stop

operation.

AStr Auto Start setting

This is used to set Auto Start

operation.

tim Time setting Used for setting a time.

PrG3 Program type selection

This is used to select a program type

to use from 1 to 3.

See “Creating a program” on P.26.

PAt

Program pattern

selection

This is used to select a program

pattern to use.

See “Creating a program” on P.26.

End Time up

This is displayed when Timer

operation is finished.

See P.21 and 23.

Sv-1

Program temperature

setting

This is used to set a temperature for

each step of a program.

（Displayed range is Sv-1～Sv-30）

t-1 Program time setting

This is used to set a time for each

step of a program.

（Displayed range is t-1～t-30）

PS-3

Selection of return

destination of program

repeat

This is used to select a return

destination step for program repeat

operation.

See “Program Repeat operation” on

P. 3 1.

Pc-2

Setting of program

repeat

This is used to set a number of

Program Repeat operation.

See “Program Repeat operation” on

P. 3 1.

15

3.Names and Functions of Parts

Main body

Character Identifier Name Application

cAL Calibration Offset setting

This is used to enter a calibration

offset temperature.

See “Useful functions (Calibration

Offset function)” on P. 34.

oH

Overheat preventive

device temperature

setting

This is used to set a temperature of

the overheat preventive device. See

“Setting the overheat preventive

device” on P.19.

Lock Setting key lock

Key locks settings to prevent their

alterations.

See “Useful functions (Lock function)”

on P.35.

door Door open display

This indication appears when the door

is opened.

If you open the door during operation,

control (heater and fan) will be

stopped, and automatically recovers

when you close the door.

※ For characters of operation modes and function setting keys, see “Operation modes and function

setting keys and characters” on P.18.

16

4. Operating Procedures

List of operation modes and functional menus

Operation modes of this unit are as follows.

№ Name Description Page

1

Fixed Temp

operation

Pressing

FIXED TEMP. key enters the Fixed Temp operation

setting mode.

Pressing

FIXED TEMP. key again enters the Temperature

Setting mode.

Use

▽ and △ keys to set a temperature.

Press RUN/STOP key to start operation and press RUN/STOP

key to stop operation.

P. 2 0

2

Quick Auto Stop

operation

This function is used when, for example, “to stop operation in

the middle of it after several hours”.

You can press

TIMER key to set a time to stop operation

during the Fixed Temp operation.

Use

▽ and △ keys to set a time.

Pressing RUN/STOP key starts Quick Auto Stop operation and

the timer starts in the middle of it and automatically stops

operation when after set time elapsed.

P. 2 1

3 Auto Stop operation

This is used to set “operation to automatically stop when

setting Fixed Temp operation.”

Press

TIMER key to display “AStP”.

You can press ENTER key to set a set temperature “Sv”.

You can set an operation time “tim” by pressing ENTER key

again.

Pressing

RUN/STOP key starts Auto Stop operation.

P. 2 2

4 Auto Start operation

This is used to “automatically start several hours” after turning

power on.

Press

TIMER key to display “AStr”.

You can press ENTER key to set a set temperature “Sv”.

You can set an operation time “tim” by pressing ENTER key

again.

Pressing

RUN/STOP key starts Auto Start operation.

P. 2 4

5 Program operation

This is used to increase or decrease temperature above or

below set temperature and depending on specific time

periods.

Press

PROGRAM key to display “PrGn”.（n:1,2,3）

Press PROGRAM key again to select a program mode you

want.

For “PrG2” and “PrG3”, press

ENTER key to select a

pattern ”Pat” you want.

Press

RUN/STOP key to start program operation.

P. 2 6

※You cannot change the operation mode while the unit is in operation. Be sure to first stop

operation before trying to change the mode.

17

4. Operating Procedures

List of operation modes and functional menus

Operation modes of this unit are as follows.

№ Name Description Page

1

Overheat Preventive

function

Automatic Overheat Preventive function：

The function has been set to automatically activate when

in-bath temperature rises together with the unit set

temperature to a temperature 12℃ plus that temperature

(automatic recovery).

Overheat preventive device：

The power supply unit, the display, and the key input

assembly are common with the controller, while the

device has an independent temperature detecting circuit,

a CPU, sensors, and an output circuit, for which a

temperature you want can be set on the operation panel.

If the overheat preventive device has activated, the unit

will stop and will not recover until the power switch is

turned on again. (Manual recovery).

P. 1 9

2

Calibration Offset

function

The Calibration Offset function compensates any

differences that may occur between the target in-bath

temperature and the temperature on the controller (sensor

temperature).

You can compensate in plus or minus direction over the

entire temperature range of the unit.

P. 3 4

3

Overheat Preventive

Temperature

Compensation function

When you perform temperature compensation for the

controller in item 2 above, temperature to be input to the

overheat preventive device will also be compensated

automatically.

－

4

Power Failure

Compensation function

When a power failure occurred in the middle of operation

and recovered, this function resumes operation at the status

immediately before the failure.

－

5 Setting Lock function

This function is used to lock set operation status.

You can set and cancel lock using the

SUB MENU key.

P. 3 5

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Yamato Scientific DKG610/610V/650/650V/810/810V/850/850V Operating instructions

Yamato Scientific DKG610/610V/650/650V/810/810V/850/850V Operating instructions

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