Yamato Scientific IQ821 Low Temperature Incubators User Manual

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Programmable

Low Temperature Incubator

Model

IQ821

Instruction Manual

- First Edition -

zThank you for purchasing "Programmable Low Temperature Incubator, IQ820" of Yamato Scientific Co., Ltd.

zTo use this unit properly, read this "Instruction Manual" thoroughly before using this unit.

Keep this instruction manual around this unit for referring at anytime.

WARNING!:

Carefully read and thoroughly understand the important warning items described in this manual before using this unit.

Yamato Scientific Co. LTD.

 

 

 

Contents

Cautions in Using with Safety................................................................

1

 

Explanation....................................................................................................................

1

 

Table of Illustrated Symbols ..........................................................................................

2

 

Fundamental Matters of "WARNING!" and "CAUTION!"...............................................

3

Before Using this unit.............................................................................

4

 

Requirements for Installation.........................................................................................

4

 

Defrost in Refrigerator...................................................................................................

8

Description and Function of Each Part .................................................

9

 

Main Unit .......................................................................................................................

9

 

Control Panel...............................................................................................................

10

 

Defrost Control Panel..................................................................................................

11

 

Characters of the Controller ........................................................................................

12

 

Operation Method .................................................................................

13

 

Operation Mode and Function List ..............................................................................

13

 

Operation Mode, Function Setting Key, and Characters .............................................

15

 

Setting of Overheating Prevention Device ..................................................................

16

 

Fixed Temperature Operation......................................................................................

17

 

Quick Auto Stop Operation..........................................................................................

18

 

Auto Stop Operation....................................................................................................

19

 

Auto Start Operation....................................................................................................

21

 

Program Operation......................................................................................................

23

 

Other Functions...........................................................................................................

30

 

Handling Precautions ...........................................................................

31

 

Maintenance Method.............................................................................

33

 

Daily Inspection and Maintenance ..............................................................................

33

Long storage and disposal...................................................................

34

 

When not using this unit for long term / When disposing ............................................

34

In the Event of Failure… .......................................................................

35

 

Safety Device and Error Code.....................................................................................

35

 

Trouble Shooting .........................................................................................................

36

After Service and Warranty ..................................................................

37

 

Specification..........................................................................................

38

 

Wiring Diagram......................................................................................

40

 

Replacement Parts Table......................................................................

41

 

Reference...............................................................................................

42

 

List of Dangerous Substances ....................................................................................

42

Cautions in Using with Safety

Explanation

MEANING OF ILLUSTRATED SYMBOLS

Illustrated Symbols

Various symbols are used in this safety manual in order to use the unit without danger of injury and damage of the unit. A list of problems caused by ignoring the warnings and improper handling is divided as shown below.Be sure that you understand the warnings and cautions in this manual before operating the unit.

WARNING!

CAUTION!

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

If the caution is ignored, there is the danger of a problem that may cause injury/damage to property or the unit itself.

Meaning of Symbols

This symbol indicates items that urge the warning (including the caution). A detailed warning message is shown adjacent to the symbol.

This symbol indicates items that are strictly prohibited.

A detailed message is shown adjacent to the symbol with specific actions not to perform.

This symbol indicates items that should be always performed.

A detailed message with instructions is shown adjacent to the symbol.

1

Cautions in Using with Safety

Table of Illustrated Symbols

Warning

Warning,

Warning,

Warning,

Warning,

Warning,

generally

high voltage

high temperature

drive train

explosive

Caution

Caution,

Caution,

Caution,

Caution,

Caution,

generally

electrical shock

scald

no road heating

not to drench

Caution,

Caution,

water only

deadly poison

Prohibit

Prohibit,

Prohibit,

Prohibit,

Prohibit,

generally

inflammable

to disassemble

to touch

Compulsion

Compulsion,

Compulsion,

Compulsion,

Compulsion,

Compulsion,

generally

connect to the

install on a flat

disconnect the

periodical

 

grounding

surface

power plug

inspection

 

terminal

 

 

 

2

Cautions in Using with Safety

Fundamental Matters of "WARNING!" and "CAUTION!"

WARNING!

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

Never use this unit in an area where there is flammable or explosive gas. This unit is not explosion-proof. An arc may be generated when the power switch is turned on or off, and fire/explosion may result. (Refer to page 42 "List of Dangerous Substances".)

Always ground this unit

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

If a problem occurs

If smoke or strange odor should come out of this unit for some reason, turn off the power key right away, and then turn off the circuit breaker and the main power. Immediately contact a service technician for inspection. If this procedure is not followed, fire or electrical shock may result. Never perform repair work yourself, since it is dangerous and not recommended.

Do not use the power cord if it is bundled or tangled

Do not use the power cord if it is bundled or tangled. If it is used in this manner, it can overheat and fire may be caused.

Do not process, bend, wring, or stretch the power cord forcibly

Do not process, bend, wring, or stretch the power cord forcibly. Fire or electrical shock may result.

Substances that can not be used

Never use explosive substances, flammable substances and substances that include explosive or flammable ingredients in this unit. Explosion or fire may occur. (Refer to page 42 "List of Dangerous Substances".)

Do not disassemble or modify this unit

Do not disassemble or modify this unit. Fire or electrical shock or failure may be caused.

Do not touch high-temperature parts

The inside of the body or the door may become hot during and just after operation. It may cause burns.

CAUTION!

During a thunder storm

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

3

Before Using this unit

Requirements for Installation

WARNING!

1.Always ground this unit

Be sure to connect the earth wire (the green cable of power cord) to the grounding conductor or ground terminal to prevent accidents caused by electric leakage.

Please consult your local electrical contractor for power connecting work.

Do not connect the earth wire to gas or water pipes. If not, fire disaster may be caused.

Do not connect the earth wire to the ground for telephone wire or lightning conductor. If not, fire disaster or electric shock may be caused.

Rounded terminal for M5

Green (to ground)

Black (to power supply)

White (to power supply)

The power plug is not equipped with this unit. Connect the ground wire correctly adjusting to the status of the power supply equipment side to be connected.

2. Connect the power cord paying attention to the color of each core wire

When connecting the power cord, do check the breaker on the electric power equipment be "OFF". Note that IQ821 does not equip with the power plug. Select and connect the appropriate plug or terminal corresponding to the power capacity that is adjusted to the status of the power supply equipment side.

Core Wire Color

Interior Wiring

Black

Power Supply Side

White

Power Supply Side

Green

Ground Wire Side

3. Choose a proper place for installation 4. Caution at defrost

Do not install this unit in a place where:

Rough or dirty surface.

Flammable gas or corrosive gas is generated.

Ambient temperature exceeds 35°C.

Ambient temperature fluctuates violently.

There is direct sunlight.

There is excessive humidity and dust.

There is a constant vibration.

Install this unit on a stable place with the space as shown below.

More than 15cm

More than

Main Unit

More than

15cm

15cm

 

 

Front side

 

Catch drain from drain hose with a tray at defrost.

Drain hose

Tray

Note: The tray is not included in the attachments of unit.

4

Before Using this unit

Requirements for Installation

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

(Refer to page 42 "List of Dangerous Substances".)

Never use this unit in an area where there is flammable or explosive gas. This unit is not explosion-proof. An

arc may be generated when the power switch is turned ON or OFF,

and fire/explosion may result.

 

 

Never use explosive substances, flammable substances and substances that include explosive or flammable ingredients in this unit.

Explosion or fire may occur.

 

 

Explosive substance

Flammable substance

5

Before Using this unit

Requirements for Installation

6. Do not modify

7. Installation on horizontal surface

Modification of this unit is strictly prohibited. This could cause a failure.

Set this unit to the flattest place. Setting this unit on rough or slope place could cause the vibration or noise, or cause the unexpectible trouble or malfunction.

Modification

8. Do not make an overload

9. Do not set samples in close formation

The withstand load of shelf is 15kguniform load Set the samples apart each other.

Samples

15Kg

Shelf

The temperature in furnace cannot be controlled if too much samples are set there. Make sure to use the shelf and set samples apart each other so as to make the free space of 30% or more to the furnace to acquire accuracy of temperature.

Make the free space of 30% or more

6

Before Using this unit

Requirements for Installation

CAUTION!

10.Choose a correct power distribution board or receptacle

Choose a correct power distribution board or receptacle that meets the unit’s rated electric capacity.

Electric capacity:

IQ821: 100V AC, 20A

NOTE)

There could be the case that the unit does not run even after turning ON the power. Inspect whether the voltage of the main power is lowered than the specified value, or whether other device(s) uses the same power line of this unit. If the phenomena might be found, change the power line of this unit to the other power line.

11.Before/after installing

It may cause injure to a person if this unit falls down or moves by the earthquake and the impact. etc..To prevent, take measures that the unit cannot fall down, and not install to busy place.

12.Handling of power code

Do not entangle the power cord. This will cause overheating and possibly a fire.

Do not bend or twist the power cord, or apply excessive tension to it. This may cause a fire and electrical shock.

Do not lay the power cord under a desk or chair, and do not allow it to be pinched in order to prevent it from being damaged and to avoid a fire or electrical shock.

Keep the power cord away from any heating equipment such as a room heater. The cord's insulation may melt and cause a fire or electrical shock.

If the power cord becomes damaged (wiring exposed, breakage, etc.), immediately turn off the power at the rear of this unit and shut off the main supply power. Then contact your nearest dealer for replacement of the power cord. Leaving it may cause a fire or electrical shock.

Connect the power plug to the receptacle which is supplied appropriate power and voltage.

13.Notes for some kind of sample

Stainless steel is used for interior; however, it may be corroded by strong acid etc. And the door packing made of rubber may be corroded by some kind of solvent, e.g. alkaline, oil, halogen etc.

Much frost on the evaporator degrades the refrigeration capability, which may cause uncontrollability of setting temperature. Be careful, especially, to treat samples with large water content that generate much frost. Perform the defrost operation if frost is observed through the frost inspection window.

The equipment with large heat load cannot be used because the temperature in furnace increases.

7

Before Using this unit

Defrost in Refrigerator

Much frost on the evaporator degrades the refrigeration capability, which may cause uncontrollability of setting temperature. In the IQ821, the condition of frost on the evaporator can be checked through the frost inspection window inside furnace. The frosting speed varies depending on the following conditions.

1)Temperature used Easily frosted when using the unit in low temperature

2)External temperature/humidity Easily frosted when external temperature/humidity is higher

3)Sample in furnace Easily frosted when sample contains much water

The following operations can be set to take measure against frosting in the IQ821. Set either of them depending on the situation. The fixed temperature and program operation are available there by pressing the DEFROST key on the defrost control panel, in addition to the program operation.

Manual defrost operation (manual start/automatic stop):

Perform the defrost operation if much frost is in the evaporator. The operation is started manually and stopped automatically with the built-in timer after 5-minute operation.

Refer to the page 11 for the operating instructions.

Cycle defrost operation (Automatic start/stop):

In the case of operating the unit for a long term, it is available to set the cycle defrost operation. Both approx. 5-minute operation and 23-hour-and-55-minute stop are repeated automatically. Refer to the page 11 for the operating instructions.

CAUTION!

The temperature in furnace increases about 3 at the defrost operation. Be careful if it affects the samples. The indicated temperature may increase more than 10 at that time. (The increasing temperature is depending on the setting temperature, sample, and air temperature.)

Compensation Operation for Power Failure

In the case of occurring the power failure during operation, the unit restarts the operation from just the status that the power is turned OFF.

The unit memorizes the remaining timing every one minute after starting the operation.

8

Description and Function of Each Part

Main Unit

Defrost control panel

Front view

Lock unit (Upper)

Control panel

Control panel

Lock unit (Lower)

Rear view

Caster with adjuster

Drain hoses (for upper and lower)

9

Description and Function of Each Part

Control Panel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No.

Name

Function

 

START/STOP Key

Starts/stops the operation.

 

▲▼ Key

Uses for rising UP/lowering DOWN the setting value.

 

ENTER Key

Settles the inputted value.

FIXED TEMP Key

Chooses the fixed temperature operation.

 

TIMER Key

Chooses the timer operation (Quick Auto Stop/Auto Stop/Auto

 

 

Start).

 

PROGRAM Key

Chooses the program operation or program creation mode.

 

SUBMENU Key

Uses for setting the overheating prevention temperature,

 

 

calibration offset temperature, key lock function, or program

 

 

repeat function.

 

HEATER Lamp

Lights while the heater works.

 

ALARM Lamp

Lights up when an error occurs. (Buzzer sounds simultaneously.)

 

AUTO STOP Lamp

Blinks while setting quick auto stop timer or auto stop timer.

 

 

Lights while quick auto stop timer or auto stop timer is running.

 

AUTO START Lamp

Blinks while setting auto start timer.

 

 

Lights while auto start timer is running.

FIXED TEMP Lamp

Blinks while setting fixed temperature operation.

 

 

Lights while fixed temperature operation is running.

 

PROGRAM Lamp

Blinks while setting program operation.

 

 

Lights while program operation is running.

Measurement Temperature Displays the measured temperature, setting character, alarm

Display

information.

Setting Temperature

Displays the setting temperature, setting value for timer mode,

Display

remaining time.

Overheating Prevention Displays the setting temperature for overheating prevention

Temperature Display

device.

Refrigerator Lamp

Lights while the refrigerator works.

 

10

 

Description and Function of Each Part

Defrost Control Panel

MANUAL

UPPER

CYCLE

MANUAL

LOWER

CYCLE

 

 

DEFROST

 

DEFROST

DEFROST

 

DEFROST

 

 

 

 

 

 

ON

 

ON

ON

 

ON

 

OFF

 

OFF

 

 

 

 

 

 

 

 

 

 

No.

Name

Function

 

 

 

 

Manual Defrost Key (Upper Stage)

Uses this key for activating the manual defrost function of

 

 

the upper stage.

 

Cycle Defrost Key (Upper Stage)

Uses this key for activating the cycle defrost function of the

 

 

upper stage.

 

Manual Defrost Lamp (Upper Stage)

Lights this lamp during performing the manual defrost

 

 

function of the upper stage.

 

Cycle Defrost Lamp (Upper Stage)

Lights this lamp in the following status:

 

 

- The cycle defrost function of the upper stage is under

 

 

operation during the defrost operation.

 

 

- The cycle defrost function is under operation with the

 

 

defrost stopped.

 

Manual Defrost Key (Lower Stage)

Uses this key for activating the manual defrost function of

 

 

the upper stage.

 

Cycle Defrost Key (Lower Stage)

Uses this key for activating the cycle defrost function of the

 

 

upper stage.

 

Manual Defrost Lamp (Lower Stage)

Lights this lamp during performing the manual defrost

 

 

function of the upper stage.

 

Cycle Defrost Lamp (Lower Stage)

Lights this lamp in the following status:

 

 

- The cycle defrost function of the upper stage is under

 

 

operation during the defrost operation.

 

 

- The cycle defrost function is under operation with the

 

 

defrost stopped.

11

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