Daihan Scientific WCB User manual

Man207 (18 Aug. 2015)
WCB
Digital Precise Circulation Water Bath
Certifications by - - -
CE Marked Products.
ISO 9001 Certified.
PL Insurance
Validation(IQ&OQ) Service
Patented( No. 10-0554098) Jog Shuttle Control System.
Operation Manual
(Version 2.1.1)
written for
WCB –6/-11/-22 models
“WCB-22” Digital Precise Circulation Water Bath 22Lit.
Sales & Basic A/S :
By the Nearest Official Distributors.
²English Page : P. 11 ~ 23
²Korean Page : P. 24 ~ 39
DAIHAN
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European Declaration of Conformity
We, DAIHAN Scientific Co., Ltd.,
326, Sinpyeongseokhwa-ro, jijeong-myeon, Wonju-si, Gangwon-do, Korea
Tel: [phone], Fax: [phone]
declare under our sole responsibility that the product
Circulation Water Bath
WCB-6, WCB-11, WCB-22
to which this declaration relates is in conformity
with the following standard or other normative document
EN 61326, EN 61000-3-2, EN 61000-3-3, EN 61010-2-010
following the provisions of the directives:
EC Directive 2006/42/EC
Compliance Certificates and Full Reports.
Ref: F690501/SP-EMC000952, STS-07-0157 S C LV
From “SGS Testing Korea”, a Member of SGS Group
(SGS SA, 1 Place des Alpes, P.O.Box 2152, 1211 Geneva 1, Switzerland)
Showing Compliance to the above Standards are available on request.
Signed: ____________________________ (Chong ku Shu)
Date: 18, April 2016
Authority: President / CEO
For
DAIHAN Scientific Co., Ltd.,
326, Sinpyeongseokhwa-ro, jijeong-myeon, Wonju-si, Gangwon-do, Korea
Tel: [phone], Fax: [phone]

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Contents
Page
1. Safety Instructions ...................................................................…….....….. 4
2. Before Use ….................................................................................……..... 8
3. Introduction ....................................................................................... 9
4. Package Contents .................................................................................... 10
5. Appearance and Naming .......................................................................... 11
6. Installation ..................……………….......................................................... 12
7. Cautions in Use ………………....................................................................... 14
8. Controller Details ..................................................................................... 16
9. Operation ........................................................................................... 17
10. Specifications …………........................................................................ 20
11. Maintenance …………………..................................................................... 21
12. Troubles & Solutions .......……................................................................. 22
13. Certificate ........................………............................................................ 23

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Safety Instructions 1
Please read this carefully for the safety before using the device. The indicated cautions are
related to the safety and you should observe all safety and warning instructions.
Symbols (Pictograms) and the meaning
This symbol indicates caution
(Including warning). There will
be concrete descriptions.
This symbol indicates inhibition.
There will be concrete
description.
This symbol indicates inhibition
regarding modification.
This symbol indicates caution
regarding heat.
This symbol indicates the risk of
explosion or fire.
This symbol indicates the user
must be kept away while
operation.
Please read following warning for safety and proper use.
WARNING
Do not use a power source other than which the unit is designed to operate on.
Inappropriate power supply may result in damage to the equipment. Adhere to all
electrical codes.
Please do not touch with wet hands. It may be caused an electric shock.
Do not handle the power cord harshly. Disconnection or short may cause if you
bend or put a heavy thing on the device.
When you take a plug out in a wall socket, turn the power off and then take the
plug out carefully.

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Insert the plug securely into a wall socket.
Loose connections result in excessive heat generation to the device and may cause
arcing to occur at the connection.
Avoid using multi-point extension power cords. It may cause excessive heat
generation and be the cause of a fire.
If you extend the power cord, use the cord to have sufficient electric capacity.
Be sure to operate the device only with the specified power supply.
When you connect the product specified by 100V to 200V, it may be caused to
over-heat, electric shock or a short circuit to each part.
Do not connect wrong electricity since it is the cause of a fire.
Disconnect the power supply plug if the unit is not going to be used for an
extended period of time.
Installing the device (repeated in the Section 6)
WARNING
Place the device on a level, horizontal surface to support the capacity of the device
without vibration. If there is vibration, install the device on a support material with
enough space. Small place may cause the device to drop.
Do not install at a dangerous place.
Do not operate the device where there are flammables. It could be caused serious
accidents like explosion or fire.
Do not operate the device outside.
Avoid areas where the sun shines or rain directly on the device. It is very dangerous
as cause over-heat or a short circuit.
Do not install the device where it can get damp or dust.
It may be caused overheating, a short circuit or a fire by damp or dust inside of the
device.

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Do not use this device when temperature fall below 15°C and rise above 35°C.
Do not use the device at a place with high temperature. Do not operate the device
near a heater, blowing an air-conditioner. It may be caused an accident by over-
heating.
The device should be set at a well ventilated place.
Be sure the holes on the side or rear surface of the body are not blocked by a wall or
an object. And do not operate the device at a poor ventilated place or use closed.
It may cause a fire or damage of the device as not to release heat or insufficient
ventilation may result.
Set the device a lightening place.
When you set the device at a dark place, it may cause an unexpected accident by
mistake in operation.
Operating the device (repeated in the Section 7)
WARNING
Be careful to operate the device.
You should read this manual carefully before using.
The device should only be operated by laboratory personnel especially trained for this
purpose and familiar with all precautionary measures required for working in a
laboratory.
Operate after check the safety of the device.
If there is generated a slight shock or a poisonous gas from a sample, figure it out
and make sure the safety using dustproof or a gas mask.
Do not put any objects insides.
When an object that is easy to be combustible like a stone, a metal or paper goes
inside, it may cause a fire, an electric shock or a break down.
If do, pull out the mains plug from a socket and contact a manufacturer or a supplier.

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Do not disassemble or remodeling by yourself.
It may cause damage to the designed safety.
We do not have any duties for an accident, quality deterioration or a defect caused
by a customer.
If unexpected sound, smell or smog is generated, pull out the main plug and contact
manufacturer or a supplier.
CAUTION
This device must be connected to an earthed power supply.
SAFETY knob should be set as operating temperature +20 ~ +30°C.
Please be noted that the heater doesn’t work if the SAFETY knob is set to 0 position.
If you use radiation or contaminated samples, the responsibility is to the customer.
Do not use this product to sterilization or disinfection.
Avoid the use with poisonous or flammable sample.
Never use with a explosive sample.
Please avoid ultraviolet lamps.
It could be cracked or faded.
Disconnect the power supply plug if the unit is not used for an extended period of
time.

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Before Use 2
Thank you very much for purchase of WCB-6/-12/-22 Digital Precise Circulation Water Bath.
This operation manual describes performance, usage, cautions and notices for use of the
purchased product. Before use, please confirm this manual and use properly.
Please read carefully and thoroughly all the safety instructions described in the Section 1 again.
And also, please keep this manual.
※Modification of exterior or specifications could be made without notice to improve the quality
and performance of the product.
¨Product Liability (PL) Insurance Admission
DAIHAN Scientific (Co., Ltd.) is a member of Product Liability Insurance (PL
Insurance), so that its customers can trust our products, (believe and use its
products,) by preparing against the accident which can be occurred during using the
products by self-production.
[Contents] ………………………………………………………………………………………
Insurance Type: Product Liability Insurance
Publishing Office: Machinery Insurance Cooperative
Limit of Indemnity: 100 million won for Persons and Objects
Secured Area: Worldwide (excluding North America)
Emergency Contact: DAIHAN Scientific (Co., Ltd.) (TEL: [phone], FAX: [phone])
(TEL: [phone], FAX: [phone])

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Introduction 3
WCB Digital Precise Circulation Water Baths are useful for various kind of laboratory works such
like Chemistry, Life Science, Medical Science, Pharmacology, etc. Convenience and safety in use
is considered in developing and manufacturing this product.
Key features are as follows;
■Ideal for High-performance Reliability for Biotechnology, Clinical, Environmental,
Medical, Petroleum, Pharmaceutical, or Industrial Applications
■Innovative Easy-to-Use Digital Fuzzy Controller
■Simplest Control by Jog-Shuttle Switch - Patented Article and LCD
■Warning and Automatic Stop Function for Shortage of Liquid.
■Users Self-compensation function : to control Difference between Real Temp. and
Indicated Temp. (±10℃)
■Powerful Circulation Pump assures Temp. Uniformity.
■Stainless Steel Bath for Superior Durability and High Thermal Efficiency.
■Stainless Steel Lid prevents Evaporation and keeps Constant Temperature.
■Possible Connection with Evaporators and Viscometers.
■Safety Devices : Over Temp. protection, Over Current and Leakage Breaker.
■Digital Timer Function : "Delay Time" and "Operation Time" can be controlled.
■Storage function for the Set Values of Temperature and Timer
■Alarm function : for Error Status or Timer-end
■Locking Mode supported for Experimental Safety (Input to Jog-Shuttle can be disabled)
■CE Certified
■PL(Product Liability) Insurance

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Package Contents 4
WCB-6/-12/-22 Digital Precise Circulation Water Bath .................................................... [ 1 ]
Power Cord ................................................................................................................... [ 1 ]
Stainless steel Lid .......................................................................................................... [ 1 ]
Operation Manual .......................................................................................................... [ 1 ]
Models
Classification by Application
(a) WCB-6 : Digital Precise Circulation Water Bath, 6Liter
(b) WCB-12 : Digital Precise Circulation Water Bath, 12Liter
(c) WCB-22 : Digital Precise Circulation Water Bath, 22Liter

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Appearance and Naming 5
<Fig. 1> Appreance of WCB
SAFETY Knob
Main POWER Switch
Water Drain
Jog-shuttle Knob
LCD Screen
MODE button
Circulation Extension
(Inlet + Outlet)
Heater Coil + Overheat Sensor
+ Temp Sensor + Level Sensor
Stainless Steel Bath
Stainless Steel Lid

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Installation 6
1. After receiving the unit and putting it on the specified place of use, remove the wrapping.
2. Check the unit on eventual transport damages. In case there are some transport damages
found please inform the forwarder and your contractor. If there is no damage please go to
point 3.
3. Let the unit stand for a few minutes so that the all the internal parts and components of the
unit can be stabilized.
4. Connect the mains cord to the socket.
WARNING
Place the device on a level, horizontal surface to support the capacity of the device
without vibration. If there is vibration, install the device on a support material with
enough space. Small place may cause the device to drop.
Do not install at a dangerous place.
Do not operate the device where there are flammables. It could be caused serious
accidents like explosion or fire.
Do not operate the device outside.
Avoid areas where the sun shines or rain directly on the device. It is very dangerous
as cause over-heat or a short circuit.
Do not install the device where it can get damp or dust.
It may be caused overheating, a short circuit or a fire by damp or dust inside of the
device.
Do not use this device when temperature fall below 15°C and rise above 35°C.
Do not use the device at a place with high temperature. Do not operate the device
near a heater, blowing an air-conditioner. It may be caused an accident by over-
heating.

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The device should be set at a well ventilated place.
Be sure the holes on the side or rear surface of the body are not blocked by a wall or
an object. And do not operate the device at a poor ventilated place or use closed.
It may cause a fire or damage of the device as not to release heat or insufficient
ventilation may result.
Set the device a lightening place.
When you set the device at a dark place, it may cause an unexpected accident by
mistake in operation.

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Cautions in Use 7
WARNING
Be careful to operate the device.
You should read this manual carefully before using.
The device should only be operated by laboratory personnel especially trained for
this purpose and familiar with all precautionary measures required for working in a
laboratory.
Operate after check the safety of the device.
If there is generated a slight shock or a poisonous gas from a sample, figure it out
and make sure the safety using dustproof or a gas mask.
If unexpected sound, smell or smog is generated, pull out the mains plug and
contact manufacturer or a supplier.
Do not put any objects insides.
When an object that is easy to be combustible is like a stone, a metal or paper goes
insides, it may cause a fire, an electric shock or a break down.
If do, pull out the mains plug from a socket and contact a manufacturer or a
supplier.
Do not disassemble or remodeling by yourself.
It may cause damage to the designed safety.
We do not have any duties for an accident, quality deterioration or a defect caused
by a customer.
All the mechanisms and electric/electronic devices in this machine are designed and
developed by the manufacturer. The devices could be disassembled and serviced
only by the engineers of manufacturer or by engineers approved by manufacturer.
Do not touch the device with wet hand while operation.

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Do not turn on and off frequently. It could damage the compressor by overload.
CAUTION
This device must be connected to an earthed power supply.
If the operating temperature is lower than the ambient temperature, the body could
be hot because of the heat generated by the compressor. It is natural and you don’t
have to be worried.
SAFETY knob should be set as operating temperature +20 ~ +30°C.
Please be noted that the heater doesn’t work if the SAFETY knob is set to 0 position.
If you use the machine for the purpose of heating external object by circulation,
circulation distance should be shorter than 7m and extension tube as thick as
possible is recommended.
If you use radiation or contaminated samples, the responsibility is to the customer.
Do not use this product to sterilization or disinfection.
Avoid a sample that is poisonous or flammable.
Never use for a explosive sample.
Please avoid ultrasonic lamps.
It could be cracked or faded.
Disconnect the power supply plug if the unit is not going to be used for an extended
period of time.

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Controller Details 8
(NOTE) SV : Set Value, PV : Present Value
①Digital LCD Screen :
SV and PV of Temperature, SV and PV of Timer (Operation Timer and Delay Timer) are
displayed.
②MODE button :
Selection of main operation mode. (Set Timer mode, Set Delay Timer mode, Set
Temperature mode and Safety Locking mode)
③HEATING lamp : indication of Heater setting and status
④TIMER lamp : indication of Timer setting and status.
⑤Jog-shuttle knob : Turn + Push
- Setting the value of Temperature or Timer by Turing.
- Start and stop by Pushing.
⑥SAFETY knob : safety device which protect an uncontrolled overheating of the machine.
⑦POWER switch
①
②
⑦
④
⑥
③
⑤
SV
PV

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Operation 9
1. Preparation for Use
lSupply proper liquid (distilled water) into the bath.
lConnect the power cord to the proper power socket.
lTurn on the Main Switch ⑦.
lIf the liquid in the bath is not sufficient, LCD screen ①shows “Low-Level” error
message with buzzer sound. In this case, please supply liquid more until you can see
the normal status (Set Timer mode) on the LCD.
lSet the SAFETY knob ⑧to 20~30°C higher than operation temperature.
2. Setting Timer
2.1 Set Operation Timer
lThe initial mode after power-on is “Set (Operation) Timer” mode. TIMER lamp ④is
blinking.
lSV, the value of first line (smaller-sized digits) on LCD, indicates set value of operation
timer and PV, the value of second line (bigger-sized digits) indicates present value
(remaining time) of the timer.
lInitial SV of the timer is 00:00, which means infinite time. That is the machine will
operate (heating or cooling) continuously once the operation start.
lTurn the Jog-shuttle knob ⑤then SV and PV change together. SV can be set in 1 minute,
and the maximum value is 99:59 (99 hours and 59 minutes).
lSet required time using the Jog Knob ⑤and push it to complete the timer setting. Then
timer is started and TIMER lamp ④is on. The machine stops operation (heating) after
the SV of timer has passed.
2.2 Set Delay Timer
lIt turns to “Set Delay Timer” mode by pushing MODE button ②and Jog knob ⑤
together (i.e., push Jog knob while pushing MODE button) in Set Operation Timer mode.
TIMER lamp ④is blinking.
lSV on LCD indicates set value of delay timer and PV indicates present value (remaining
time) of the timer.
lSet required time using the Jog Knob ⑤and push it to complete the timer setting. Then
timer is started and TIMER lamp ④is on. The machine starts operation (heating) after
the SV of timer has passed.
lIt returns to Set Operation Timer mode by pushing MODE button ②.

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3. Set Temperature
3.1 Set Temperature
lIt turns to “Set Temperature” mode by pushing MODE button ②in Set Timer mode.
HEATING lamp ③is blinking.
lSV on LCD indicates set value of operation temperature and PV indicates present value
(measured value by temperature sensor in the chamber) of the temperature.
lTurn the Jog-shuttle knob ⑤then SV changes. SV can be set in 0.1°C. The maximum
value is 100.0°C and the minimum value is 25.0°C.
lSet required operating temperature using the Jog Knob ⑤and push it to complete the
temperature setting. The controller starts operation of heater in order to meet the set
temperature. HEATING lamp ③is on.
3.2 Temperature Offset
WCB product intelligently and precisely controls the temperature inside the chamber by
digital Fuzzy control system, so high precision with low over/undershoot is assured. But,
some users want to ‘synchronize’ the PV temperature of the machine to the temperature
value measured by other thermometer that is used as a reference meter for the whole
experimental process. In such a case, WCB Circulation Water bath offers a function of
adjusting the PV temperature within –10.0 ~ +10.0°C ÞUser’s self-compensation function.
lIt turns to “Set Offset Value” mode by pushing MODE button ②and Jog knob ⑤
together (i.e., push Jog knob while pushing MODE button) in Set Temperature mode.
lPV on LCD indicates current temperature and the SV indicates the Offset value to be
added to PV temperature (compensation value).
lTurn the Jog-shuttle knob ⑤then SV (Offset) and temp PV changes together. Offset can
be set in 0.1°C, and input range is –10.0 to +10.0°C. Temp PV shows value added or
subtracted by SV (Offset) value.
lIt returns to Set Temperature mode by pushing MODE button ②.
4. Locking Mode
lIt turns to “Locking” mode by pushing MODE button ②in Set Temperature mode. In
this mode, turning or pushing Jog knob doesn’t work. So, you could prevent any
changes of set values by mistake.
lFirst line of LCD shows present value of temperature and the second line shows present
value (remaining time) of Operation Timer.
lIt returns to Set (Operation) Timer mode by pushing MODE button ②.

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5. Summarization of Mode Transition
By the simple combination of MODE button and Jog-shuttle knob, WCB circulation water bath
offers outstanding user-interface with maximum efficiency and convenience for controlling
overall functions of the machine. (Patent registered)
The following diagram briefly shows the overall mode transition mechanism.
6. Storage Function
In each setting mode (Set Operation Timer mode, Set Delay Timer mode, Set Temperature
mode and Set Offset Value mode), you can store the set values by simply pushing the Jog knob
for 1 second. For showing the value is successfully stored, the set value on LCD blinks three
times. Even though you turn off the machine, the set values are stored permanently, so you can
re-use the values for the next time of operation.
Set Operation Time
Set Temperature
Safety Locking
Set Delay Time
Set Offset Temp.
Power On
M
ODE
button
MODE
button
M
ODE
button
M
ODE
button
M
ODE
button
MODE
button
+ Jog knob
MODE
button
+ Jog knob

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Specifications 10