Yamato Scientific DG400 Drying Ovens for Laboratory Tools User Manual

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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 operating the unit, be sure to

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

Yamato Scientific Co., Ltd.

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 ..........................

30

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

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

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 may 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 or 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.

1

1. Safety precautions

List of symbols

Warning

General warnings

Danger!: High

Danger!: High

Danger!: Moving

Danger!: Hazard

voltage

temperature

part

of explosion

 

 

 

 

 

 

 

 

Caution

 

 

 

 

 

 

 

 

 

 

 

General cautions Electrical shock!

Burning!

Caution for no

Caution for water

liquid heating!

leak!

 

 

For water only

Poisonous

material

 

 

 

Prohibitions

 

 

 

General bans

Fire ban

Do not

Do not touch

disassemble

 

 

 

 

 

 

 

 

 

Compulsions

 

 

 

 

 

 

 

 

 

General

Connect ground

Install levelly

Pull out the power

Regular

compulsions

wire

plug

inspection

 

2

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 page 37.

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 37.

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.

3

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 humidity is high

Where subject to direct sunlight

Where vibration is severe

Install this unit at a place with spaces shown below.

15cm or more

15cm

 

15cm

or

 

or

more

 

more

 

 

 

 

 

 

1m or more

Front

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 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.

4

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

5

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: 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 When a bipolar type outlet tap is used tap.

 

Grounded tap

 

 

Power plag

 

 

 

 

 

Bipolar

 

receptacle

Ground wire

 

 

 

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.

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.

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.

6

2. Before operating the unit

Installation procedures precautions

(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.

Drain pan

(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.

Samples

15kgShelf 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.

Assure at least 30% of space.

7

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:

Instruments 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.

Corrosive 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 touch those parts with bare hands.

(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.

8

3. Names and functions of parts

Main body

Front panel

Operation panel

Standalone overheat

 

preventive device

 

(hydraulic)

Observation

window

ELB

Rating sticker

Door

Drain pan

Casters with adjusters

 

(2 points)

Rear panel

Exhaust ports

Power cord

9

3. Names and functions of parts

Operation panel

 

MEASURED TEMP.

 

 

 

 

 

 

 

 

 

HEATER

 

 

 

 

 

 

RUN

 

 

 

SET TEMP.

 

 

 

TIMER

RUN

 

 

STOP

 

 

 

 

 

SUB MENU

 

 

 

 

 

 

No.

Name

Operation/action

 

RUN/STOP key

Used for starting/stopping operation.

 

▼▲ keys

Used for selecting settings.

 

TIMER key

Key for selecting timer operation settings.

 

 

 

 

Quick auto stop operation, auto stop operation or auto start

 

 

 

 

operation can be selected.

 

SUB MENU key

Key for setting calibration offset temperature, the key lock

 

(Long press of the

 

 

function or the power outage compensation function.

 

TIMER

 

key)

 

 

RUN lamp

Illuminates during fixed value operation and blinks during

 

 

 

 

timer operation.

 

HEATER lamp

Illuminates while heater power is on.

 

Measured temperature

Displays measured temperature in the bath set characters

 

screen

alarm information.

 

Set temperature screen

Displays a set temperature, timer settings and timer remaining

 

 

 

 

time.

10

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

ended.

 

 

 

 

 

 

See page 17, 19.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Used for inputting a calibration offset

 

 

 

 

cAL

Calibration offset setting

temperature

 

 

 

 

 

 

 

 

See section “Using the calibration

 

 

 

 

 

 

 

 

 

 

 

 

offset function” on page 23.

 

 

 

 

 

 

 

 

 

 

 

 

 

Key locks settings to prevent their

 

 

 

 

Lock

Key lock of settings

alteration.

 

 

 

 

 

 

 

 

See section “Using the lock function”

 

 

 

 

 

 

 

 

 

 

 

 

on page 24.

 

 

 

 

 

 

 

 

 

 

 

 

 

Selects operations after recovery from

 

 

 

 

Pon

Power outage

power outage.

 

 

 

 

 

 

 

 

compensation setting

See section “Using the power outage

 

 

 

 

 

 

 

 

 

 

 

compensation function” on page25.

 

 

 

 

 

 

 

*See the section “Operation mode function setting keys and characters” on page 14 for operation modes and characters of functions.

11

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