Yamato Scientific DG400 User Manual

Page 1

Instrument Drying Oven

Model DG400

Second edition

● Thank you very much for purchasing this Yamato DG400 instrument drying oven.

● 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 o perating the unit, be sure to

read carefully and fully understand important warnings in the operating instructions.

Yamato Scientific Co., Ltd.

Page 2

Table of 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 .................................................... 7

3. Names and functions of parts........................................................ 9

Main body ........................................................................... 9

Operation panel ..................................................................... 10

Explanation of characters............................................................. 11

4. Operating procedures ............................................................. 12

List of operation modes and functions .................................................. 12

Operation mode・function setting keys and characters ................................... 14

Operating procedures (settings for overheat prevention device) ............................ 15

Operating procedures (fixed temperature operation)...................................... 16

Operating procedures (quick auto stop operation) ........................................ 17

Operating procedures (auto stop operation) ............................................. 19

Operating procedures (auto start operation) ............................................. 21

Useful functions (calibration offset function) ............................................. 23

Useful function (setting lock function)................................................... 24

Useful function (power outage compensation function).................................... 25

5. Cautions on handling .............................................................. 26

6. Maintenance procedures........................................................... 29

Daily inspection/maintenance ......................................................... 29

7. When the unit is not to be used for a long time or when disposing..................... 30

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

Notes about disposition .............................................................. 30

8. Troubleshooting................................................................... 31

Safety device and error codes......................................................... 31

When a malfunction is suspected ...................................................... 32

9. After sales service and warranty .................................................... 33

When requesting a repair ............................................................. 33

10. Specifications.................................................................... 34

11. Wiring diagram................................................................... 35

12. List of replacement parts.......................................................... 36

13. List of dangerous materials ....................................................... 37

14. Standard installation manual ...................................................... 38

.......................... 30

Page 3

1. Safety precautions

Explanation of pictograms

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

（

Note 1）Serious injury means a wound, an electrical shock, a bone fracture or intoxication that ma

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

outpatient visits for a long time.

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

Indicates a situation which may result in minor injury (Note 2) and property damages (Note 3.)

About pictograms

（

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.

Page 4

Warning

1. Safety precautions

List of symbols

General warnings

Caution

General cautions Electrical shock! Burning!

For water only

Danger!: High

voltage

Poisonous

material

Danger!: High

temperature

Danger!: Moving

part

Caution for no liquid heating!

Danger!: Hazard

of explosion

Caution for water

leak!

Prohibitions

General bans Fire ban

Compulsions

General

compulsions

Connect ground

wire

Do not

disassemble

Install levelly

Do not touch

Pull out the power

plug

Regular

inspection

Page 5

1. Safety precautions

Warning・Cautions

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 page 37.

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

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.

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

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

Be sure to connect the ground wire.

Ban on operation when an abnormality occurs

Never use electrical power cords bundled.

Warning

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 37.

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. A malfunction, a fire or an electrical shock may result.

Never try to touch a hot part.

Never try to disassemble or alter the unit.

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.

Page 6

2. Before operating 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 humidity is high ・ Where subject to direct sunlight ・ Where vibration is severe

Install this unit at a place with spaces shown below.

Precautions when installing the unit

15c m or mo re

15cm

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.

15cm

1m or more

Front

The unit weight is approx. 45 kg. 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 in a personal injury. We recommend making safety measures such as to avoid installing the unit at a place other than busy places.

Page 7

2. Before operating the unit

Precautions when installing the unit

4. Secure sufficient ventilation for the unit.

Do not operate the unit when its side panels and vent holes 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 37 for flammable and explosive gases.

Explosive

gas

Flammable

gas

Page 8

2. Before operating the unit

Precautions when installing the unit

7. Be sure to connect the pow er 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: DG400 AC100V 10.5A

＊ 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 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, pull out the power cord (plug) out of the power supply and ask your dealer to replace the cord. If it is left unrepaired, a fire or an electric shock may result.

Connect the power cord to an appropriate wall outlet.

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.

We recommend use of a ground type outlet tap.

Grounded tap

Power plag

Ｇ

When there is no ground terminal.

In this case, class D grounding work is necessary and please consult your dealer or our nearest sales office.

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.

When a bipolar type outlet tap is used

Bipolar receptacle

Insert the ground adaptor included as an option, into a power plug confirming the polarity of the outlet. Connect the grounding wire (green) of the ground adaptor to the ground terminal on the power supply equipment.

Ground wire

Page 9

(1) Select an installation site.

・Make sure that all of four legs are securely on a flat surface. ・Two legs on the unit front are adjustable. Adjust them so that the installed unit will not be

unstable. Turning the adjuster clockwise raises it and turning it anti-clockwise lowers it.

(2) ・Placement of the drain pan.

Be sure to place a drain pan to receive water generated during the drying process.

(3) Install shelf boards.

・Install shelf pegs at heights you want on the right and left shelf posts in the internal bath of

the main body.

・Completely push shelf boards by sliding to the end. *Take care to put each shelf board on correct pairs of right and left shelf pegs. ・Make sure that shelf boards will not fall nor rattle. ・Withstand load of each shelf board is 15kg in even loading. When putting instruments,

arrange them as dispersed as possible.

2. Before operating the unit

Installation procedures・precautions

Drain pan

Samples

15k

　Shelf board

・Put instruments with appropriate spaces between them. Too many instruments may prevent

proper temperature control. To assure proper temperature control, put instruments with a space at least 30% of the shelf board area.

ssure at least 30% of space.

Page 10

2. Before operating the unit

Installation procedures・precautions

(4) Do not put an instrument on the bottom of the internal bath.

・Operating the unit with a fixing directly put on the bottom of the internal bath might degrade

its temperature characteristics. This also may cause corrosion, damage or rust of the internal bath. Never put any fixing on the bottom surface.

・When putting instruments, take care not to allow them touching the heater, the sensor or

other devices that are installed on the bottom. Put instruments on the shelf board included with the unit.

(5) Take special care for instruments shown below:

①Instruments that contain flammable or explosive components or such instruments to which

samples containing those components are attached.

・The unit is not explosion proof. Never attempt to dry or process instruments to which

samples that contain flammable or explosive components are attached.

②Corrosive instruments ・Take care for handling of corrosive instruments or instruments to which corrosive

components are attached. Although SUS304 stainless steel is used for major components, note that they might corrode with strong acid. Note that packings may corrode with acid, alkali, oil or organic solvents.

(6)

Always operate the unit with the exhaust ports open.

・There are two exhaust ports on the top surface of the unit. In regular operation, open both

of two vent holes. Adjust their opening level according to the water amount attached to a specific instrument.

Note that high temperature steam may be blowing out of the exhaust ports. To prevent a burn, never try to look into the exhaust ports or

(7) Always shut the door completely.

・ Make sure that the clamp on the right side of the door is completely locked before

operating the unit.

(8) About two-tier stacking

・Do not stack two DG400 units on each other in two tiers.

touch those parts with bare hands.

Page 11

Front panel

Observation

window

3. Names and functions of parts

Operation panel

Main body

Standalone overheat preventive device (hydraulic)

ELB

Rating sticker

Rear panel

Door

Drain pan

Casters with adjusters (2 points)

Exhaust ports

Power cord

Page 12

3. Names and functions of parts

Operation panel

⑤

④

③

TIME

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

℃

RUN

STOP

⑥

⑦

①

②

No. Name Operation/action

① RUN/STOP key Used for starting/stopping operation. ② ▼▲ keys Used for selecting settings.

TIMER key Key for selecting timer operation settings.

③

Quick auto stop operation, auto stop operation or auto start operation can be selected.

SUB MENU key

(Long press of the TIMER

Key for setting calibration offset temperature, the key lock function or the power outage compensation function.

key)

④ RUN lamp Illuminates during fixed value operation and blinks during

timer operation.

⑤ HEATER lamp Illuminates while heater power is on. ⑥ Measured temperature

screen

Displays measured temperature in the bath・set characters・ alarm information.

⑦ Set temperature screen Displays a set temperature, timer settings and timer remaining

time.

Page 13

3. Names and functions of parts

Explanation of characters

Characters on the controller are explained in this section.

Characters Identifier Name Application

AStP Auto stop setting Used for setting auto stop operation.

AStr Auto start setting Used for setting auto start operation.

Displayed when timer operation has

End Time up

cAL Calibration offset setting

ended. See page 17, 19.

Used for inputting a calibration offset temperature

See section “Using the calibration offset function” on page 23.

Key locks settings to prevent their

Lock Key lock of settings

Pon

* See the section “Operation mode・function setting keys and characters” on page 14 for operation

modes and characters of functions.

Power outage compensation setting

alteration.

See section “Using the lock function” on page 24.

Selects operations after recovery from power outage.

See section “Using the power outage compensation function” on page25.

Page 14

4. Operating procedures

List of operation modes and functions

Operation modes of the unit are as shown below:

№ Name Description Page

Turning the ELB on to enter the operation setting mode.

Fixed temperature

operation

Quick auto

stop operation

Proceed to temperature setting that uses ▼▲ keys.

Pressing the RUN/STOP key long starts the operation and

pressing it long again stops operation.

Used when you want to “stop fixed temperature operation

being performed automatically in several hours.

Press the TIMER key during fixed value operation to display

“AStP.” Set a duration before stop with the ▼▲ keys.

Pressing the RUN/STOP key starts quick auto stop operation

and activates the timer in the middle of it to automatically

stop it after the set period of time.

P. 1 6

P. 1 7

Used when you want to “set automatic stop for fixed value

operation when making settings for it.”

3 Auto stop operation

4 Auto start operation

* Operation mode cannot be changed while the unit is in operation. First stop operation before

changing the mode.

Press the TIMER key to display “AStP.” Set a duration before stop with the ▼▲ keys.

Pressing the RUN/STOP key starts auto stop operation.

Used when you want to “start operation automatically after

several hours” after power is turned on.

Press the TIMER key to display “AStr.” Set a duration before stop with the ▼▲ keys.

Pressing the RUN/STOP key starts auto start operation.

P. 1 9

P. 2 1

Page 15

4. Operating procedures

List of operation modes and functions

Functions of the unit are as shown below:

№ Name Description Page

Automatic overheat prevention function: This function is linked to the unit set temperature and

has been set to so that it is automatically activated (returned automatically) at a temperature 12℃ higher

than the set temperature in the bath.

Overheat prevention

function

Standalone overheat prevention device:

When the temperature in the bath reaches the set

temperature of the overheat prevention device, controller power is shut off. (Controller display will be eliminated)

Change temperature setting of the hydraulic overheat

preventing device on the right side of the unit to the correct value (set temperature +20℃), turn the ELB OFF once and then turn it ON again.

P. 1 5

Calibration offset

function

3 Setting lock function

Power outage

compensation function

Calibration offset function compensates any differences

between the target temperature in the bath and the control temperature of the controller (sensor temperature.)

The function can compensate to either plus or minus side for the whole temperature band of the unit. This compensation can be set with the SUBMENU keys.

This function locks the set operation status. The lock can be set or released with the SUBMENU key.

This function returns the main unit operation to the resume

status after recovery from power outage, or keeps the current stop status. This compensation can be set with the SUBMENU keys.

P. 2 3

P. 2 4

P. 2 5

Page 16

4. Operating procedures

Operation mode・function setting keys and characters

Key operations and characters in the diagram below are used for operation mode and function settings.

ELB ON

Fixed temp.

Temperature

Long

press

operaiton

setting

▲

RUN

STOP

Operation

start

Quick auto stop

Fixed temp.

operation

TIMER

AStＰ

Time setting

▲

RUN/

One

STOP

sec.

Timer start

End

RUN/

One

STOP

sec.

Operation

stop

operation

Auto stop

Time setting

One sec.

Timer start

One sec.

Automatic

operation

Timer

TIMER

AStＰ

▲

RUN/ STOP

End

RUN/ STOP

stop of

▲

Auto start

Time setting

One sec.

Timer start

Auto start of

operation

One sec.

Operation

AStr

▲

RUN/ STOP

stop

▲

Functional

setting

Long press

Calibaration offset

function

Compensation

setting

Minus

Long press

SUB

cAL

SUB

▲

Plus

off

Long

press

Setting lock

function

LocK

Lock setting

▲

SUB

Long

press

Power outage compensation

function

Power outage compensation

off

Pon

setting

▲

SUB

▲

Page 17

4. Operating procedures

Operating procedures (settings for overheat prevention device)

As a safety measure for preventing overheat, a hydraulic overheat prevention device (manual return) is installed.

Temperature setting range and functions

The temperature setting range for the standalone overheat prevention device is “50℃～120℃.”

When the temperature in the bath keeps rising beyond the controller set temperature and reaches

the set temperature of the overheat prevention device, controller power is shut off. (Controller display will be eliminated) When the overheat prevention device is activated, it will not be released until the ELB is turned on. Change temperature setting to the correct value (set temperature +20℃), turn the ELB OFF once and then turn it ON again.

How to set temperature

Setting the overheat prevention temperature

・ Set the temperature scale on the hydraulic overheat

prevention device installed on the upper right side of the unit to the arrow in the diagram shown left.

・Turn the ELB to “OFF” and wait for a while without opening

the door.

・After a while, turn the ELB ON (set the ELB “ON”.)

Set the temperature scale

to the arrow

Caution

① Set temperature as “set temperature +20℃” as a rough standard and add 5℃ to the setting if

the device functions improperly.

② The temperature setting range for the standalone overheat prevention device is “50℃～

120℃.” Be sure to set the overheat prevention activation temperature correctly otherwise the

device may not start, the overheat prevention device is activated before temperature in the bath increases completely, or a fire or other unexpected accidents may result.

The temperature is set at 120℃ on shipping from the factory.

③ If the temperature for the standalone overheat prevention device is set at around or below the

room temperature, the device may be triggered when the door is opened.

④ The overheat prevention device has been designed to prevent overheating of devices not to

protect samples. The device does not prevent accidents caused from use of explosive or flammable substances.

Page 18

How to start fixed temperature operation

MEASURED TEMP.

HEATE

RUN

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

SET TEMP.

℃

RUN

STOP

4. Operating procedures

Operating procedures (fixed temperature operation)

1.Turn the ELB ON. (Turn the ELB to “ON.”)

When the ELB is turned ON, the initial values will be

displayed for about four seconds, then the initial screen

will appear and the current bath temperature and the

previous set temperature are displayed on each of the indicators.

℃

Measured temperature screen: Indicates the current bath temperature

Set temperature screen: Displays the previous set temperature

2. Setting the temperature

Set a temperature using the ▼▲ keys.

℃

RUN

STOP

TIMER

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

When you want to correct setting errors or change settings

① When you want to lower the set temperature during fixed value operation, note

that it takes some time to reach the reset temperature since the unit has no

Caution

cooling capacity.

② Immediately after operation has been stopped, the temperature in the bath is

around the set temperature. Operation stop refers only to machine stop and time needed for decreasing the temperature in the bath is not considered.

3. Starting operation

Press the RUN/STOP key longer.

Fixed temperature operation will start and the RUN lamp and the heater lamp come on.

4. Stopping operation

Press the RUN/STOP key longer.

Operation stops, the RUN lamp goes off and the screen switches to the initial setting screen.

When you want to change settings, press the ▼▲ keys on

the current screen to enter the setting mode where you can

change settings. Blinking stops in three seconds after change and setting is completed.

Page 19

4. Operating procedures

① ②

Operating procedures (quick auto stop operation)

Used when you want to “stop fixed temperature operation being performed automatically in several hours. Quick auto stop operation is a function to enable auto stop timer setting during operation.

Procedures for quick auto stop operation

MEASURED TEMP.

℃

RUN

STOP

TIMER

SUB MENU

HEATER

RUN

SET TEMP.

1. Setting time period before stop during fixed temperature operation

① Make sure that the RUN lamp is illuminated to

indicate the unit is in operation. Press the TIMER key.

Characters AStP are indicated on the measured temperature screen to indicate the auto

stop operation mode and set duration blinks on the set temperature screen.

② Set a duration you want using the ▼▲ keys.

About the timer function

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

℃

RUN

STOP

℃

RUN

STOP

The maximum time that can be set for the timer is 999 hours 50 minutes. Up to 99 hours 59 minutes, time can be set in minutes. One hundred hours and over are set only in 10 minutes. Keep the ▼▲ keys pressed to continuously change set

time and you can quickly reach the time you want. Press the ▼▲ keys once at a time for fine adjustment.

2. Starting timer operation

When the time you want is set, press the RUN/STOP key

while the set temperature screen is blinking.

The RUN lamp blinks and timer operation is started. Timer starts counting when the temperature in the bath

reaches the set temperature.

Once timer counting is started, the set temperature screen

changes to the remaining time display.

3. Stopping and ending timer operation

Operation stops automatically when the set temperature

has elapsed.

Characters End

blink on the set temperature

screen to indicate operation has ended.

Press the RUN/STOP key for approx. one second to end

the timer operation mode. The screen switches to the initial setting screen.

Page 20

When you want to correct set temperature or set time, or change settings

4. Operating procedures

Operating procedures (quick auto stop operation)

When you want to change settings, press the ▼▲ keys on

the current screen to enter the setting mode where you can

change settings. Blinking stops in three seconds after

change and setting is completed. Note, however, that

temperature changes after timer activation are counted also while temperature is changing.

When you want to change settings before timer activation, press the TIMER key on the current screen to enter the

setting mode where you can change settings. Enter a time

duration from when the set temperature is reached to the time the device shall be stopped.

When you want to change settings after timer activation, press the TIMER key on the current screen to enter the

setting mode where you can change settings. Note,

however, you need to set a time calculated by adding the time already passed to the time to be added.

After change has been made, press the RUN/STOP key to complete the process.

When you want to stop quick auto stop operation in the

middle of it, press the RUN/STOP key long once to stop

device control once, then make settings again in the appropriate mode.

In terms of the remaining time display

dot indicates count down and an illuminating dot indicates a

wait status (while temperature is increasing or decreasing to

the set temperature) during which the timer has stopped counting.

a blinking

Page 21

4. Operating procedures

① ②

Operating procedures (auto stop operation)

This mode automatically stops fixed value operation after a certain time from its start set with the timer.

Procedures for auto stop operation

MEASURED TEMP.

℃

RUN

STOP

TIMER

SUB MENU

HEATER

RUN

SET TEMP.

1. Setting a stop time ① After confirming the temperature you want is set, press

the TIMER key to display characters AStP on the measured temperature screen that indicate auto

stop operation.

The set time is displayed on the set temperature

screen.

② Set a time you want using the ▼▲ keys.

Pressing the▼▲ keys makes the set time blink. The time is determined when blinking stops.

About the timer function

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

℃

RUN

STOP

℃

RUN

STOP

time and you can quickly reach the time you want. Press the ▼▲ keys once at a time for fine adjustment.

2. Starting timer operation

When the time you want is set, press the RUN/STOP key

for about one second while characters AStP that indicate auto stop operation are displayed on the

measured temperature screen and the set time on the set temperature screen.

The RUN lamp blinks and timer operation is started.

Timer starts counting when the temperature in the bath

reaches the set temperature.

Once timer counting is started, the set temperature screen

changes to the remaining time display.

3. Stopping and ending timer operation

Operation stops automatically when the set temperature has elapsed.

Characters End

blink on the set temperature

screen to indicate operation has ended.

Press the RUN/STOP key for approx. one second to end

the timer operation mode. The screen switches to the initial setting screen.

Page 22

When you want to correct set temperature or set time, or change settings

4. Operating procedures

Operating procedures (auto stop operation)

When you want to change settings, press the ▼▲ keys on

the current screen to enter the setting mode where you can

change settings. Blinking stops in three seconds after

change and setting is completed. Note, however, that

temperature changes after timer activation are counted also while temperature is changing.

When you want to change settings before timer activation, press the TIMER key on the current screen to enter the

setting mode where you can change settings. Enter a time

duration from when the set temperature is reached to the time the device shall be stopped.

When you want to change settings after timer activation, press the TIMER key on the current screen to enter the

setting mode where you can change settings. Note,

however, you need to set a time calculated by adding the time already passed to the time to be added.

After change has been made, press the RUN/STOP key to complete the process.

Auto stop operation is not available together with auto start operation.

When you want to stop auto stop operation in the middle of

it, press the RUN/STOP key long once to stop device

control once, then make settings again in the appropriate mode.

In terms of the remaining time display

dot indicates count down and an illuminating dot indicates a

wait status (while temperature is increasing or decreasing to

the set temperature) during which the timer has stopped counting.

a blinking

Page 23

4. Operating procedures

① ②

Operating procedures (auto start operation)

This mode automatically starts fixed value operation after a certain time from its start set with the timer. However, operation does not stop automatically but needs to be stopped manually.

Procedures for auto start operation

1. Setting an operation start time

① After confirming the temperature you want is set,

press the TIMER key to display characters AStr

MEASURED TEMP.

℃

RUN

STOP

TIMER

SUB MENU

HEATER

RUN

SET TEMP.

About the timer function

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

℃

RUN

STOP

℃

RUN

STOP

on the measured temperature screen that

indicate auto start operation.

The set time is displayed blinking on the set

temperature screen.

② Set a time you want using the ▼▲ keys. Pressing the▼▲ keys makes the set time blink. The

time is determined when blinking stops.

time and you can quickly reach the time you want. Press the ▼▲ keys once at a time for fine adjustment.

2. Starting timer operation

When the time you want is set, press the RUN/STOP key

for about one second while characters AStr that indicate auto start operation are displayed on the

measured temperature screen and the set time on the set temperature screen.

Timer starts counting when the RUN/STOP key is

pressed.

Display on the measured temperature screen switches

from set time display to remaining time display.

3. Stopping and ending timer operation

Operation automatically starts at the set time and the

RUN lamp comes on.

To stop operation, press the RUN/STOP key for approx.

one second to end the timer operation mode. The screen switches to the initial setting screen.

Page 24

When you want to correct set temperature or set time, or change settings

4. Operating procedures

Operating procedures (auto start operation)

When you want to change the set temperature during timer counting, press the ▼▲ keys during that status to switch the set temperature

screen to the set temperature input mode, which blinks to enable

change of the set temperature with the ▼▲ keys.

When you want to change the set time during timer counting, press

the TIMER key during that status to switch the set temperature

screen to the set time input mode, which blinks to enable change of the set time with the ▼▲ keys.

In either case, the set temperature screen will stop blinking after a

while and switch to the timer count mode and the change made is

determined. Note, however, when you change the set time you need

to set a time calculated by adding the time already passed to the time to be added.

When operation has started after the auto start time, you cannot change the set time.

When you want to stop auto start operation in the middle of it, press

the RUN/STOP key long to stop device control once, then make settings again in the appropriate mode.

In terms of the remaining time display

indicates count down and an illuminating dot indicates a wait status

(while temperature is increasing or decreasing to the set temperature) during which the timer has stopped counting.

a blinking dot

Page 25

Useful functions (calibration offset function)

Using the calibration offset function

Calibration offset function compensates any differences between the target temperature in the bath and the control temperature of the controller (sensor temperature.) The function can compensate in parallel to either plus or minus side for the whole temperature band of the unit. The lock can be set or released with the SUBMENU keys.

The temperature is set at “0” on shipping from the factory.

4. Operating procedures

Control temp. after minus side compensation

Current temp.

① Start operation at the target set temperature and confirm

Control temp. after plus side compensation

the temperature in the bath with a temperature recorder

SUB MENU

③

TIMER

MEASURED TEMP.

HEATER

RUN

SET TEMP.

℃

④

STOP

RUN

after temperature has stabilized.

② Confirm the difference between the set temperature and

that in the bath.

③ Press the TIMER key (SUBMENU key) long to enter the

sub menu mode.

Press the TIMER key (SUBMENU key) several times to

select the characters cAL that indicate the calibration offset function.

④ Enter the difference between the set temperature and

the temperature in the bath using the ▼▲ keys and press the TIMER key (SUB MENU key) long to exit the sub menu mode. (When you want to set the key lock

function, proceed to character selection process for the key lock function without pressing the TIMER key (SUBMENU key) long.）

* You can set either of + or – side for the offset compensation temperature. When compensation is set for the – side, the measured temperature display decreases by the

compensation temperature while the temperature in the bath increases by the same amount.

When compensation is set for the + side, the measured temperature display increases by the

compensation temperature while the temperature in the bath decreases by the same amount.

* Since too large a compensation value may result in larger difference between the actual and

indicated temperatures and may present a danger, consult our nearest sales office before entering a large compensation value.

* The device has, in addition to the calibration offset function, the two-point compensation

function that adjusts offset for the lower temperature range and higher temperature range, for which adjustment temperatures have been input on shipping from the factory.

* Consult the nearest sales office before attempting validation work for the temperature adjusting

device.

Page 26

Using the lock function

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

℃

RUN

STOP

℃

RUN

STOP

4. Operating procedures

Useful function (setting lock function)

This function locks the set operation status.

The temperature is set at “off” on shipping from the factory.

① Press the TIMER key (SUBMENU key) long to enter

the sub menu mode.

Press the TIMER key (SUBMENU key) several times to select the characters Lock that indicate the

setting lock function.

② “Off” is displayed on the set temperature screen. To

lock settings, change to “on” using the ▲ key.

Press the TIMER key (SUBMENU key) long to exit the sub menu mode.

℃

RUN

STOP

TIMER

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

③ To release lock, press the TIMER key (SUBMENU

key) long again and select the characters Lock that indicate setting lock using the ▼▲ keys.

Lock is released when “off” is selected using the ▼

key.

* When the lock function is “on”, keys other than the

RUN/STOP key and the TIMER key (SUBMENU key) are locked.

Page 27

Using the power outage compensation function

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

MEASURED TEMP.

HEATER

RUN

SET TEMP.

TIMER

SUB MENU

℃

RUN

STOP

℃

RUN

STOP

4. Operating procedures

Useful function (power outage compensation function)

The power outage compensation function returns the main

unit operation to the resume status after recovery from power outage, or keeps the current stop status.

The function is set at “on” on shipping from the factory.

① Press the TIMER key (SUBMENU key) long to enter

the sub menu mode.

Press the TIMER key (SUBMENU key) several times to select the characters Pon that indicate the

setting lock function.

② “On” is displayed on the set temperature screen. The

device keeps stop status after recovery from power outage when this setting is set to “off” using the ▼ key.

Press the TIMER key (SUBMENU key) long to exit the sub menu mode.

Page 28

5. Cautions on handling

1. About handling of flammable or combustible solution

The unit is not explosion proof. Take special care for handling instruments on which

explosive materials, combustible materials or materials containing these are attached.

Flammable or combustible solution will evaporate when left at a room temperature (or at a

lower temperature for some types of solutions) and may be ignited and explode from

switches, lights and other ignitable sources. Be sure to assure sufficient ventilation when

using these materials.

See section “13. List of dangerous materials” on page 37.

2. Ban on use/countermeasures when an error occurs

If smoke is emerges on the unit or an odd odor is felt, immediately turn the ELB on the main

unit off, turn the power supply off and contact your dealer or a Yamato sales office for

inspection. Otherwise, a fire or an electrical shock may result. The user shall never attempt to repair the unit to avoid any possible dangers.

3. Secure sufficient ventilation for the unit.

Do not operate the unit when its side panels and vent holes are blocked. Internal temperature of the unit will rise degrading the performance and an accident, a

malfunction or a fire may result.

4. Do not allow liquid to spill over the unit.

Do not allow liquid to spill over the unit. Pay special attention not to allow liquid to enter into

the vent holes. If liquid is spilt over or into the unit, do not try to operate it any further. Otherwise, an accident, a malfunction, a fire or an electrical shock may result.

5. Do not allow a metal piece to fall into the unit.

Do not allow a clip, a staple, a screw or other metal pieces to fall into the unit. Stop operating the unit if a metal piece has dropped into the unit. Otherwise, an accident, a malfunction, a fire or an electrical shock may result.

6. Do not open the cabinet.

Do not open panels or covers fixed on the unit, or do not operate the unit with any of those open. Otherwise, an accident, a malfunction, or an electrical shock may result.

7. Do not attempt to operate the unit without the drain pan.

Do not attempt to operate the unit without the drain pan. Otherwise, an accident, a malfunction, or an electrical shock may result.

8. Do not attempt to modify the unit.

The user shall never try to modify the unit; other wise, an accident, a malfunction, a fire or an electrical shock may result.

Warning

Page 29

5. Cautions on handling

1.Do not step on the unit.

Do not step on the unit. Otherwise, the unit may trip over or be damaged resulting a personal injury or a malfunction.

2.Do not put or drop an object on the unit.

2.Do not put or drop an object on the unit. Since the unit contains high precision devices, vibrations or shock may cause a malfunction.

3. When a thunder is heard.

When a thunder is heard, turn the ELB on the main unit off then turn the main power off immediately. Otherwise, a lightning strike may result and cause a fire.

4. During night and not to be operated for a long period of time.

During the night and when you want to stop the unit for a longer period of time, turn the ELB to “off” and pull out the power cord from the power supply.

5. About recovery from power outage.

When the power is applied again after the unit has stopped due to power outage, the unit

will automatically return to the status immediately before the power outage and resumes operation. Turn the ELB off if you do not want to resume operation by automatic recovery.

6. Always operate the unit at a correct ambient temperature.

The operating temperature range is a room temperature ranging from +5 to 70℃ above room temperature. Never try to operate the unit outside the operating temperature range.

7. When opening or closing the door

・When opening or closing the door, do not put your hand or face close to the area the door

moves (space).

The door may touch your hand or face and causing an injury. ・After operation has been completed, do not leave the unit with its door open in order to,

for example, cool down inside of the bath or dry instruments earlier. Heat from inside the bath may cause deformation of the control panel of a malfunction of the control devices.

8. Do not operate the unit with the door open.

When the unit is operated with the door open, proper temperature control is not possible

and the heater may overheat causing a possible danger. Be sure to operate the unit with the door closed.

Caution

Page 30

5. Cautions on handling

Caution

9. About installation of shelf boards and instruments

Correctly place shelf boards and samples according to Installation procedures・precautions

on page 7. If these are not placed correctly, the unit will be unable to perform correctly as well as an accident or a malfunction may result.

10. Do not attempt to do anything other than specified in this operation manual.

Do not attempt to do anything other than specified in this operation manual. Otherwise, an unexpected accident may result.

Page 31

6. Maintenance procedures

Daily inspection/maintenance

Be sure to perform daily inspection and maintenance to assure reliable operation of the unit.

Warning

● Be sure to pull out the power cord unless necessary before trying to do inspection and

maintenance works.

● Start these works after the device has returned to the normal temperature.

● Never try to disassemble the unit.

Caution

● Wipe off any dirt with a tightly wrung soft cloth. Never try to clean the unit with benzene, thinner

or scouring powder, or rub with a scrubbing brush. Deformation, degradation or discoloration may result.

Every month

Inspect the functions of the ELB.

Test shall be performed with the power cord connected and power is being supplied to the unit.

・First turn the ELB to “off.” ・Then, turn the ELB “on” and press the test button on the

device with a ball-point pen to check whether it is turned off to indicate that it is in the normal state.

Test button

Maintenance of the internal bath

Stop operation and turn the ELB to OFF. Pull out the power cord off the distribution board and the wall outlet. Confirm the temperature in the device and remove shelf boards and clamps.

The internal bath, shelf boards and shelf clamps are made of SUS304 stainless steel and

reinforced glass is used for the observation window. To clean these items, thoroughly wipe with a cloth moistened with cleaning alcohol then wipe gently with a dry cloth.

Never use acid detergent, alkaline detergent, oil or organic solvent, which may cause corrosion or damage to the products.

There are sharp protrusions inside the internal bath, shelf boards and shelf pillars and shall be handled with special care to avoid personal injury. Be sure to wear gloves since handling with bare hands may present danger.

Page 32

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

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

Caution

When the unit is not going to be used for a long time

●Turn the ELB to off and pull out the power

cord.

Warning

When disposing the unit

●Do not leave the unit in the area where

children may have access.

●Be sure to remove handles before disposing

the unit to prevent the doors from locking.

●In general, dispose the unit as a bulky waste.

Notes about disposition

Always pay attention to the preservation of the global environment. ・ We highly recommend taking the unit apart as far as possible for separation or recycling to

contribute to the preservation of the global environment. Major components and materials for the unit are as follows:

Names of major

components

Major exterior components

Exterior Bonderized steel sheet iron, melamine resin baking finish Internal bath Stainless steel SUS304 Packing Silicon rubber foam Nameplates Polyethylene (PET) resin film

Major electric parts

Switches and relays Resin, cupper Boards Glass fiber and other composite parts Pipe heater SUS304 Power cord Synthesized rubber sheath, cupper, nickel

Major materials

Page 33

8. Troubleshooting

Safety device and error codes

The unit has the self diagnostic function with a controller and a separate safety device. Table below shows possible causes and measures when the safety device is triggered.

[Error codes]

When a functional or mechanical abnormality occurs, an error code will be displayed on the

control panel. When an abnormality occurs, confirm the error code and immediately stop operation.

Safety device Symptom Possible causes and measures

Sensor error

Memory error

Measured

temperature error

appears

－－－－－－－－ appears

• Error in the temperature input circuit

• Disconnection or other errors in the temperature

sensor

• Measured temperature is outside the

displayable range. Contact our service department.

• Memory setting error Contact our service department.

• When the upper limit alarm of the temperature

alarm function is triggered. Contact our service department.

Page 34

If any of the symptoms below occurs

Symptom Check

8. Troubleshooting

When a malfunction is suspected

Turning the ELB to on will not activate the unit.

Temperature does not rise.

Temperature fluctuates during operation.

Displayed temperature

differs from the measurement.

If power outage occurs

When the power is applied again after the unit has stopped due to power outage, the unit will automatically return to the status immediately before the power outage and resumes operation. Turn the ELB off if you do not want to resume operation by automatic recovery.

◆If the symptom does not match any of the above, immediately turn the ELB on the main unit

off, pull out the power cord from the power supply and contact your dealer or one of our sales offices.

● If the power cord is connected to the power supply securely.

● If power outage is occurring.

● If the standalone overheat prevention device is working.

● If the set temperature is below that in the device.

● If the power supply voltage has declined.

● If the ambient temperature is low.

● If cooling load for inside the bath is large.

● If the set temperature is appropriate.

● If the power supply voltage has declined.

● If ambient temperature fluctuates widely.

● If load for inside the bath is large.

● If the calibration offset setting is other than “0”. Set it to “0.”

Confirm the settings in ”Using the calibration offset function”

on page23.

Page 35

9. After sales service and warranty

When requesting a repair

If any trouble occurs, immediately stop operation, turn the ELB off, pull out the power plug and contact your dealer or our sales office.

Information necessary for requesting a repair

● Model name of the product

● Serial number

● Date (y/m/d) of purchase

● Description of trouble (as in detail as possible)

Be sure to indicate the warranty card to our service representative.

See the warranty card or the nameplate installed on the unit.

See “3. Names and functions of parts on page 9.

Warranty card (attached separately)

●Ｗarranty card is given by your dealer or one of our sales offices and please fill in your dealer,

date of purchase and other information and store securely.

●Warranty period is one full year from the date of purchase. Repair service for free is available

according to the conditions written on the warranty card.

●For repairs after the warranty period consult your dealer or one of our sales offices. Paid repair

service is available on your request when the product’s functionality can be maintained by repair.

Minimum holding period of repair parts

The minimum holding period of repair parts for this product is seven years after end of production. Repair parts here refer to parts necessary for maintaining performance of the product.

Page 36

10. Specifications

Model DG400

Operating temperature range

Inner material Stainless steel SUS304

Observation window Standard glass 3mm W250 x H300 mm

Configuration

Heater SUS pipe heater 1.0 kW

Control system PID control with a micro computer

Temperature setting / display system

Operation mode

Sensor K thermocouple

Control assembly

Auxiliary functions

Self diagnostic function

Safety

device

Protection device

Room temperature +5℃～70℃

Digital display using up/down keys

Fixed temperature operation, quick auto stop operation

Auto stop operation, auto start operation

Calibration offset function, lock function, power outage

compensation function

Temperature sensor error, memory error, auto overheat

prevention, measured temperature error

ELBI with an over current protector, hydraulic standalone

overheat prevention device

Outer dimensions (W x D x H mm)

Internal dimensions (W x D x H mm)

Number of shelves/ withstand load

Shelf pitch 30 mm

Specifications

Internal volume

Power supply (50/60Hz) AC100V 10.5A

Weight Approx. 45 kg

Included items

*Performance values are for the AC100V power supply with no-load. *Operating environmental temperature range for this device is 5℃～35℃.

Shelf boards x 2, drain pan, operating manual,

504 × 561 × 788

450 × 450 × 450

10 shelves 15 kg/shelf

92ℓ

warranty card

Page 37

11. Wiring diagram

X2-2

AC100V

ELB

X2-1

Symbol Part name Symbol Part name

SSR

2 3

TB1

5 6

3 4

7 8 9

CONT

CN1CN1

PIO

ELB with an over current

Thermostat

ELB

(Standalone overheat prevention

protector

device)

T Terminal block TH Temperature sensor (K)

H Heater CONT Planar circuit board

X1, X2 Relay PIO Display circuit board

SSR Solid state relay

Page 38

12. List of replacement parts

Components of DG400

Symbol Part name Code No. Specifications Manufacturer

T Heater LT00008800 100V 1.0 kW Yamato

TH Sensor 1-16-003-0049

OH EGO thermostat LT00008745 55.13225.070 E.G.O

PIO Display circuit board LT00007639 CN40B-Y Yamato

CONT Planar circuit board LT00007640 CN40B-Y Yamato

- Tough card LT00007641 15P 300mm Yamato

X1 VC relay LT00008362 BW22531K Matsushita

X2 Relay 2-05-008-0002 AP3124K Matsushita

SSR SSR 2-16-000-0035 TRS5225 Toho

ELB ELB 2-06-005-0001 BJS153 Matsushita

K thermocouple

LCK-MI-2000Y

Yamato

Page 39

13. List of dangerous materials

Never use an explosive substance a flammable substance or a substance containing them for this device.

① Nitroglycol, glycerine trinitrate, cellulose nitrate and other explosive nitrate esters

② Trinitrobenzen, trinitrotoluene, picric acid and other explosive nitro compounds

③ Acetyl hydroperoxide, methyl ethyl ketone peroxide, benzoyl peroxide and other

Explosive

substance

Explosive

substance

organic peroxides

Metal “lithium”, metal “potassium”, metal “natrium”, yellow phosphorus, phosphorus

sulfide, red phosphorus, celluloids, calcium carbide (a.k.a, carbide), lime phosphide,

magnesium powder, aluminum powder, metal powder other than magnesium and aluminum powder, sodium dithionous acid (a.k.a., hydrosulphite)

substances

① Potassium chlorate, sodium chlorate, ammonium chlorate, and other chlorates

② Potassium perchlorate, sodium perchlorate, ammonium perchlorate, and other

perchlorates

③ Potassium peroxide, sodium peroxide, barium peroxide, and other inorganic

peroxides

Explosive

④ Potassium nitrate, sodium nitrate, ammonium nitrate, and other nitrates

⑤ Sodium chlorite and other chlorites

Oxidizing substances

⑥ Calcium hypochlorite and other hypochlorites

① Ethyl ether, gasoline, acetaldehyde, propylene chloride, carbon disulfide, and other

substances with ignition point at a degree 30 or more degrees below zero.

② n-hexane, ethylene oxide, acetone, benzene, methyl ethyl ketone and other

Flammable substances

Combustible

substances with ignition point between 30 degrees below zero and less than zero.

③ Methanol, ethanol, xylene, pentyl acetate, (a.k.a.amyl acetate) and other

substances with ignition point between zero and less than 30 degrees.

④ Kerosene, light oil, terebinth oil, isopenthyl alcohol(a.k.a. isoamyl alcohol), acetic

acid and other substances with ignition point between 30 degrees and less than 65 degrees.

Hydrogen, acetylene, ethylene, methane, ethane, propane, butane and other

gas

Substance which is a flammable gas at 15℃, one air pressure.

(Quoted from the separate table 1 in Article 6, the enforcement order of

the Industrial Safety and Health Law)

Page 40

14. Standard installation manual

*Install the product according to the following: (Confirm separately for optional items or special specifications)

Model Serial number Date

№

Specifications

2 Installation

Operation-related matters

Description

2 Error codes

Item Implementation method

Included items

Source voltage

Operation start

Operational descriptions

Maintenance and inspection

Completion of installation Entries

Check for number of staffs against the included item field

• Visual check of environmental conditions

Caution: Take care for

environment

• Securing a space

• Measure the user side voltage

(outlet) with a tester

• Measure voltage during

operation (shall meet the specifications)

Caution: Always use a plug

that meets the specification for attaching to the ELB.

• Starts operation

Performs fixed value opera-

tion, auto stop operation or auto start operation

Explain operations of each component according to the operational instructions

Explain the customer about error codes and procedures for release according to the operational instructions

Explain operations of each component according to the operational instructions

• Fill in the installation date and

the installation mgr. on the nameplate of the main unit

• Fill in necessary information to

the warranty card and hand it over to the customer

• Explanation of the route for

after-sales service

Installation

mgr.(company name)

TOC No. Reference page of the

operating instruction manual

10.Specifications field P.34

2. Before operating the unit

• On the installation site

2. Before operating the unit

• Be sure to connect the ground wire.

• Power supply is ….

10.Specifications

• Specification-power supply

2. Before operating the unit

• Installation procedures…

4. Operating procedures

• Operating procedures

1. Safety precautions

～ 13. List of dangerous

materials

8. Troubleshooting ～9. After sales service and

warranty

6. Maintenance procedures

• Daily inspection/ maintenance

9. After sales service and warranty

P.33

Installation mgr.

P. 4

P. 6 P. 6

P.34

P. 7 ～

P. 1 2 ～ 25

P.12 25 P. 1

～37

P. 3 1 ～

P.29

Judg ment

Page 41

Limited liability

Be sure to use the unit strictly following the handling and operating instructions in this operating instruction. Yamato Scientific Co., Ltd. assumes no responsibility for an accident or a malfunction caused by use of this product in any way not specified in this operating instruction. Never attempt to perform matters prohibited in this operation instruction. Otherwise, an unexpected accident may result.

Notice

● Descriptions in this operating instruction are subject to change without notice.

● We will replace a manual with a missing page or paging disorder.

Operating instruction Instrument Drying Oven DG400 Second edition Dec.10, 2009

Yamato Scientific Co., Ltd. 〒103-8432 2-1-6, Nihonbashi, Honcho, Chuo-ku, Tokyo Customer support center

Tool free: 0120-405525

http://www.yamato-net.co.jp