IKA HRC 2 basic Operating Instructions Manual

20000015724a

HRC 2 basic_112017

IKA® HRC 2 basic

Operating instructions EN

Device setup

1

2

3

2

Fig. 1

Item Designation
1 Operator panel and display
2 Handle
3 Venting grid
4 Filling opening lid
5 RS 232 port
6 USB port
7 Overflow
8 Backflow
9 Power socket
10 Power switch
11 Pump connector OUT
12 Pump connector IN

4

5
6

12
11

10
9

8
7

2

3

2

2

Source language: German

EN

Contents

Page

Device setup ................................................................................................................................................. 2

Declaration of Conformity ............................................................................................................................ 4

Explication of warning symbols ................................................................................................................... 4

Safety instructions ....................................................................................................................................... 5

General information ����������������������������������������������������������������������������������������������������������������������������������������������5

Disposal of the device �������������������������������������������������������������������������������������������������������������������������������������������6
Fluids ��������������������������������������������������������������������������������������������������������������������������������������������������������������������6

Correct use ................................................................................................................................................... 6

Use �����������������������������������������������������������������������������������������������������������������������������������������������������������������������6
Range of use (indoor use only) ������������������������������������������������������������������������������������������������������������������������������6

Unpacking .................................................................................................................................................... 7

Unpacking ������������������������������������������������������������������������������������������������������������������������������������������������������������7
Delivery scope �������������������������������������������������������������������������������������������������������������������������������������������������������7

Preparations ................................................................................................................................................. 7

Setting up �������������������������������������������������������������������������������������������������������������������������������������������������������������7
Connecting the tubings �����������������������������������������������������������������������������������������������������������������������������������������7
Filling and draining ������������������������������������������������������������������������������������������������������������������������������������������������8
Fluid (Standard information for IKA® fluid) ������������������������������������������������������������������������������������������������������������9
Moving the device ����������������������������������������������������������������������������������������������������������������������������������������������10

Operator panel and display ........................................................................................................................ 10

Setting the safety temperature .................................................................................................................. 11

Commissioning ........................................................................................................................................... 11

Menu settings ............................................................................................................................................ 12

Menu structure ���������������������������������������������������������������������������������������������������������������������������������������������������12
Basic guide to setting the menu options ��������������������������������������������������������������������������������������������������������������12
Operating mode (MODE)�������������������������������������������������������������������������������������������������������������������������������������12
Maximum temperature (HI T) ������������������������������������������������������������������������������������������������������������������������������12
Minimum temperature (LO T) ������������������������������������������������������������������������������������������������������������������������������12
Maximum speed (HI R) ����������������������������������������������������������������������������������������������������������������������������������������12
Minimum speed (LO R) ����������������������������������������������������������������������������������������������������������������������������������������12
Fluid type (FLUI) ��������������������������������������������������������������������������������������������������������������������������������������������������12
Temperature control type (AUTO) ������������������������������������������������������������������������������������������������������������������������13

Alarm and button tone (BEEP)

Calibration (CALI) ������������������������������������������������������������������������������������������������������������������������������������������������13

Interface and output .................................................................................................................................. 14

Maintenance and cleaning ......................................................................................................................... 16

Error codes ................................................................................................................................................. 17

Accessories ................................................................................................................................................. 17

Technical data ............................................................................................................................................ 18

Warranty .................................................................................................................................................... 19

Pump performance curve ........................................................................................................................... 19

������������������������������������������������������������������������������������������������������������������������������13

3

Declaration of Conformity

We declare under our sole responsibility that this product corresponds to the regulations 2014/35/EU, 2006/42/EC, 2014/30/EU and
2011/65/EU and conforms with the standards or other normative documents: EN 61010-1, EN 61010-2-010, EN 61326-1,
EN 60529 and DIN 12876-1�

Explication of warning symbols

Indicates an (extremly) hazardous situation, which, if not avoided, will result in death,

DANGER

serious injury�

Indicates a hazardous situation, which, if not avoided, can result in death, serious injury�

WARNING

Indicates a potentially hazardous situation, which, if not avoided, can result in injury�

CAUTION

Indicates practices which, if not avoided, can result in equipment damage�

NOTICE

Indicates a hazardous situation that cause from a hot surface!

CAUTION

Hot surface!

4

Safety instructions

General information:

• Read the operating instructions completely before

starting up and follow the safety instructions.

• Keep the operating instructions in a place where it can be
accessed by everyone�

• Ensure that only trained staff work with the device�

• Follow the safety instructions, guidelines, occupational
health, safety and accident prevention regulations�

• Set up the device in a spacious area on an even, stable,
clean, non-slip, dry and fireproof surface�

• Do not operate the device in explosive atmospheres

• Protect the device and accessories from bumping and im­pacting�

• Check the device and accessories for damage before each
use� Do not use damaged components�

• Safe operation is only guaranteed with the accessories de­scribed in the ”Accessories” section�

• The device must only be operated with the original power
cable�

• The socket for the power cable must be easily accessible�

• Socket must be earthed (protective ground contact)�

• The voltage stated on the type plate must correspond to
the power voltage�

•

The device can only be disconnected from the power sup­ply by pulling out the power plug or the connector plug�

• Disconnect the power plug before attaching or changing
any accessories�

• Disconnect the power plug before cleaning, maintenance
or moving the device�

• The device must only be opened by trained specialists,
even during repair� The device must be unplugged from
the power supply before opening� Live parts inside the
device may still be live for some time after unplugging
from the power supply�

NOTICE

safe operation, for example to keep foreign objects and
liquids, etc� from getting into the device�

• The device must only be used as prescribed and as de­scribed in the operating instructions� This includes opera­tion by instructed specialist personnel�

• When using critical or hazardous materials in your pro­cesses, IKA® recommends to use additional appropriate
measures to ensure safety in the experiment� For example,
users can implement measures that inhibit fire or explo­sions or comprehensive monitoring equipment�

• Process pathogenic material only in closed vessels under a
suitable fume hood� Please contact IKA® application sup­port if you have any question�

Coverings or parts that can be re­moved from the device must be put
back on the device again to ensure

�

CAUTION

can be easily accessed must be installed in the work area�

• A laboratory circulator heats/refrigerates and circulates
fluid according to specified parameters� This involves haz­ards due to high and low temperatures, fire and general
hazards due to electrical energy� The user safety can not
be ensured simply with design requirements on the part
of the device� Further hazard sources may arise due to the
type of tempering fluid, e�g� by exceeding or undercutting
certain temperature thresholds or by the breakage of the
container and reaction with the carrier fluid� It is not pos­sible to consider all eventualities� They remain largely sub­ject to the judgment and responsibility of the operator� For
this reason, it may become necessary for user to take other
precautionary safety measures�

• Insucient ventilation may result in the formation of ex­plosive mixtures� Only use the device in well ventilated
areas�

WARNING

not be exceeded even in the event of a fault� Check the
safe temperature circuit on a regular basis (see section
"Setting the safety temperature")�

• When device is used for external circulation, extra pre­caution must be taken for hot/cold liquid leakage due to
damaged hose�

- Use suitable hoses for connection�

- Secure hoses and tubes against slippage and avoid kinks�

- Check hoses, tubes and bath at regular intervals for pos­sible material fatigue (cracks/leaks)�

• Power cable should not get in contact with hot parts and
fluids�

WARNING

• Be careful when filling a hot bath�

CAUTION

• After a power failure during operation, the device may
start automatically (depending on operating mode)�

• Transport the device with care (see section “Moving the
device“)�

If the power switch is not within
reach when device is operating, an
EMERGENCY STOP switch that

The safety circuit (safe temperature)
must be adjusted so that the maxi­mum permissible temperature can-

Do not start up the device if:

- It is damaged or leaking

- Cable (not only power cable) is
damaged�

At high operating temperature, the
temperature of housing parts, sur­faces and tubes can exceed 70 ° C�

5

• Do not transport or empty the bath while it is still hot/
cold� This may result in accidents, especially scalding inju­ries or frostbite�

Disposal of the device:

• The device must be disposed of in accordance with na­tional or local regulations�

Fluids:

• Continuous monitoring of the bath and the filling level of
the bath fluid is required, especially at high temperatures�

• To ensure a sucient fluid circulation, the viscosity of the
bath fluid must not exceed of 50mm2/s at the lowest op­erating temperature�

NOTICE

If water is used at higher tempera­ture, there is heavy loss of fluid due
to the evaporation of the steam�

CAUTION

WARNING

the chemical hazards that may be associated with the bath
fluid used� Observe all safety warnings for the fluids�

• Depending on the bath fluid used and the type of opera­tion, toxic or flammable vapors can arise� Ensure suitable
extraction�

• Do not use any fluid which may cause dangerous reac­tions during processing�

• Only use recommended bath fluids� Only use non-acid
and non corroding fluids�

WARNING

that has been set� The safe temperature limit must always
be set to at least 25 ºC lower than the flash point of the
fluid used� Examine regularly the function of the safety
temperature limiter�

NOTICE

basis (see the chapter “Filling and draining”)�

Beware of the risk of burning due
to delay in boiling!

Only use fluids, which fulfill the re­quirements for safety, health and
device compatibility� Be aware of

Only process and heat up any fluid
that has a flash point higher than
the adjusted safe temperature limit

Never operate the device without
sucient heat carrier fluid! Check
the fluid level detection at a regular

•

Untreated tap water is not recommended� It is recom­mended to use distilled water or high purity water (ion ex­changers) and add 0�1 g soda (sodium carbonate Na2CO3)
/liter, to reduce corrosive properties�

CAUTION

Risk of burning caused by vapor or
hot water at the outlet of the cool­ing coil�

Don’t use following fluids:

NOTICE

- Untreated tap water

- Acids or bases

- Solutions with halides: chlorides, fluorides, bromides,
iodides or sulfur

- Bleach (Sodium Hypochlorite)

- Solution with chromates or chromium salts

- Glycerine

- Ferrous water�

NOTICE

ing hoses and external devices)� When doing this, also
open the stopper and union nuts caps of the pump out­puts and inputs and blow compressed air through all the
pump outputs and inputs! Beware of the risk of burning
due to delay in boiling!

When changing the bath fluid type,
must remove the remaining water
from the complete system (includ-

Correct use

• Use:

Use HRC 2 (Heated Recirculating Chiller) for tempering
and circulating fluids�

Intended Use: Tabletop device

• Range of use (indoor use only):

- Laboratories - Schools

- Pharmacies - Universities

This instrument is suitable for use in all areas except:

- Residential areas

-

Areas that are connected directly to a low-voltage supply
network that also supplies residential areas�

The safety of the user cannot be guaranteed:

- If the device is operated with accessories that are not sup­plied or recommended by IKA® �

- If the device is operated improperly or in contrary to the

IKA® specifications�

- If the device or the printed circuit board are modified by
third parties�

6

Unpacking

• Unpacking:

- Unpack the device carefully�

- Any damage should be notified immediately to the
shipping agent (post oce, railway network or logistics
company)�

• Delivery scope:

- HRC 2 basic

- Power cables

- Hose olive NW 8 (2 pieces) see Fig� 2

- Hose olive NW 12 (2 pieces) see Fig� 2

- Screwdriver (use for safety circuit) see Fig� 3

- Plastic cap (for “Overflow” connector)

- Plastic cap (for “Backflow” connector)

- USB 2�0 cabel A–micro B

- User guide

- Warranty card�

Preparations

Fig. 3Fig. 2

• Setting up:

- Place the unit on an even, stable, clean, nonslip, dry and
fireproof surface�

- Keep at least 20 cm of open space on the front and rear
side�

- The place for installation should be large enough and
provide sucient air ventilation to ensure the room does
not warm up excessively because of the heat from de­vice radiates to the environment�

- Do not set up the device in the immediate vicinity of
heat sources and do not expose to sun light�

- Cooling machine, pump motor and electronics produce
intrinsic heat that is dissipated via the venting grids (3)!
Never cover these venting grids!

Note: After setting up the device, wait at least one hour
before starting the operation to avoid the damage to the
cooling system�

• Connecting the tubings:

- Unscrew the union nuts and stoppers using a wrench
(SW 19) from the pump connector IN (12) and OUT (11)�

Stopper



- Screw the hose olive to the pump connection IN
and OUT
onto the olives� The hoses must be secured with suit­able clamps�

- Via a hose to the “Overflow” connector (7), overflow­ing fluid can be directed into a suitable vessel� The ves­sel should be positioned lower than the “Overflow”
connector�

- Connect the “Backflow” connector (8) to IKA® calo­rimeter with a suitable hose�

(11)

with union nuts� Slide the hoses (NW 12)



Olives

Union nut

External

system

(12)

Fig. 5

Union nut

Fig. 4

- Connect the hoses for circulating the external system to
the pump connectors M 16 x 1 for IN
directly or with the olives�

(12)

and OUT

(11)

Fig. 6

IKA®

Calorimeter

7

Note: Please note the permissible temperature range of
hoses� For hot fluids we recommend the IKA
hoses�
When the external system is not necessary, please seal
the pump connector IN and OUT with the existing union
nuts and stoppers�
When IKA® calorimeter is not connected, please close
the “Backflow” connector with included backflow cap�
In case of closed external system, if there is in any case no
risk of exceeding the maximum fluid level, you can close
the “Overflow” connector with the included overflow
cap� This minimizes the energy loss and protects, in case
of long-term applications with low temperatures and
high humidity, against unwanted water input and the as­sociated volume increase�
Check fluid heat expansion!

• Filling and draining:

- Before filling the fluid into the bath, open the venting
grid as indicated in following figure�

®

LT 5�20





Drain port

Drain valve





Bracket

Fig. 8

Note: Pay attention to the fluid level information:

Low Level





Fig. 7

- Check and make sure that the drain valve is closed (ro­tate clockwise to the stop position, see Fig� 8)�

Please note information in section “Commissioning”�

Note:

- Connect the power plug and turn on the device with
power switch (10)�

- The low level warning message appear on the display�
Meanwhile, the bottom LED segment of fluid level indi­cator lights up in red color to indicate the low fluid level
(see Fig� 9)

- Open the filling opening lid (4) and remove the stopper
from the filling opening� Then, fill fluid to the bath�

�

High Level

Red (High Level)

Red (Low Level)

Fig. 9

- To drain the fluid from the bath, connect a hose to the
drain port and turn the drain valve in counter clockwise
direction with a straight screwdriver�



Note: The stopper must be kept being plugged in dur­ing during operation except for filling fluids�

Fig. 10

Warning: Do not empty the bath while the fluid is still hot/

cold, there is a risk of burning/freezing�

8

• Fluids (Standard information for IKA® fluid):

No.

0
1
2
3
4
5
6
7

8

®

IKA

Designation

CF�EG28�N10�80�8
CF�EG39�N20�80�16
CF�EG44�N25�80�19
CF�EG48�N30�80�22
UF�Si�N30�150�10LV
HF�Si�20�200�50
HF�Si�20�250�50A

Water 
Customized



Operating temperature

range for open bath

application

(°C)

-10 ��� 80 -10 … 80 90 115

-20 … 80 -20 … 80 90 115

-25 … 80 -25 … 80 90 115

-30 … 80 -30 … 80 90 115

-30 … 130 -30 … 150
20 … 200 20 … 200 255 > 280
20 … 200 20 … 250 255 > 280

5 … 95 5 … 95 - -

Operating temperature

range for closed bath

applications

(°C)

Safety temperature

(°C)

145 

The listed fluid temperature range may deviate from the device operating temperature ranges and settings�

Nomenclaturefor IKA® fluids:
CF�EG28�N10�80�8 --

(5) Addition information

mm²/s

(4) Viscosity (8

)
(3) Temperature range (-10–80 °C)
(2) Chemical composition (Ethylene Glycol 28%)
(1) Classification (Cooling fluid)

Flash point

(°C)

> 170

(1) Classification:

HF: Heating Fluid
CF: Cooling Fluid
UF: Universal Fluid

(2) Chemical composition:

Si: Silicone oil
EG: Ethylene Glycol

(3) Temperature range: (

Minimum temperature� Maximum temperature)

N: Negative Temperature

(4) Viscosity:

Viscosity at 25 °C for Heating Fluid (HF)
Viscosity at -20 °C for Cooling Fluid (CF)
Viscosity at 25 °C for Universal Fluid (UF)

Dynamic viscosity [mPa•s] is a product of kinematic viscosity [mm²/s] and density [kg/m³] of the fluid divided by 1000�

(5) Additional information:

A: Oil Additives
LV: Low Viscosity



Note: for open bath application!



Note: Tap water may be unsuitable for operation because the calcium carbonate content may cause calcification�
High purity water (from icon exchangers) and distilled or bi-distilled water are unsuitable for operation due to corrosive
properties of these media� High purity water and distillates are suitable as a medium after adding 0�1 g soda (Na2CO3,
sodium carbonate) per liter of water�

 Note: The temperature limit values are adjustable in accordance with the fluid used�

9

• Moving the device:

Empty all fluid in the bath before moving device from one

place to other place�

The device can be lifted up and moved by using the top

handles or the bottom handles�

It can also be moved on flat surface by lifting and pushing

the front of the device� It is easy to move the device with

the help of the wheels�

The angle of inclination should never be more than 10 º

at any direction when move the device!





Note: The device must not be moved during operation�

After moving the device, you must wait at least one hour

before restarting the unit�

Operator panel and display

A

P

O

Fig. 12

Fig. 11

E

L JK

max. 10 ˚

F H

GCB D

IMN

Item Designation Function
A On/Off button: Switch on/off the circulator�
B LED, set: The LED lights up at the same time as the set value is displayed�
C LED, heating:
D LED,
E LED display:
F “Menu” button: Press it once: menu option is display�

Press it once again: back to working screen�

G LED, lock: Indicate the buttons are
H Lock button:
I “OK / Pump” button: Start/stop the pump function�

Confirm the menu options�
J “Pump (+)” button: Increase the pump speed setting�
Change the menu value setting�
K “Pump (-)” button: Decrease the pump speed setting�
Change the menu value setting�

L “Temp” button: Start/stop the tempering function�
M “Temp (+)” button: Increase the temperature setting�

N “Temp (-)” button: Decrease the temperature setting�

O Adjustable safety circuit: Adjust the safety temperature limit�
P Fluid level indicator: Indicate the fluid level (when the fluid level is too low or too high, the bottom or the

refrigerating

: The LED indicates the

Indicate the heating function is activated�

refrigerating

Display the settings and actual values�

deactivated�

Lock/unlock buttons�

Navigation, selecting the settings in the menu

Navigation, selecting the settings in the menu�

top LED segment change into red color)�

function is activated�

�

10

Setting the safety temperature

Setting the safety temperature with screwdriver delivered
with the device�

+

-

Fig. 13

Commissioning and operating

Note:

Before commissioning, make sure that the device has

not been moved in one hour�

Check whether the voltage specified on the type plate
matches the power voltage available�

The power socket used must be
earthed (protective earthing)�

If above conditions are met, the instrument is ready for op­eration after plugging in the power plug�
If these conditions are not met, safe operation is not guar­anteed and the device could be damaged�

Observe the ambient conditions (temperature, humidity,
etc�) listed under “Technical Data”�

After switching on the power switch (10) at the back of the
device or pressing the on/off button (A), all LED segments
light up during the self test�

The safety temperature setting will appear on the display�

Safety temperature

Factory setting: approximate max� value
Adjustment range: 0 to 110 °C�

Warning: The safety temperature must always be set to at
least 25 ºC lower than the flash point of the fluid used�

After that, following two screens appear alternately�





Then the device enters standby status and is ready for op­eration�

Change the temperature setting with “Temp (+)“ button (M)
or “Temp (-)“ button (N)�
Change the pump speed setting with “Pump (+)“ button (J)
or “Pump (-)“ button (K)�

In standby status, activate the tempering function by press­ing the “Temp“ button (L)� The device starts tempering
function and pumping function�
After pressing the power switch (10) the start-up of the
compressor is delayed (about 3 minutes)�











Display field

Software version (ver)

Operating mode (mode)

Safety temperature

Working setting

In working status, press the “OK/Pump“ button (I) to stop
pumping and tempering function�

Note: In running status, the pump speed adjusts automati­cally according to the load� When the actual speed doesn’t
reach the setting speed, the blinking set speed and the ac­tual speed appears alternately�

In standby status, press the “OK/Pump“ button (I) to start
the pump function� The tempering function will not be ac­tivated�
In working status, press the “Temp“ button (L) to stop the re
tempering function, the pump keep running�

Pressing the lock button (H) for about 2 seconds, the device
control elements can be locked to prevent accidental chang­es that can be done during operation (LED (G) will light up)�
To unlock the control elements, press the lock button again
for about 2 seconds (LED (G) goes out)�

11

• Menu structure:

MODE

Menu settings

A
B
C

Default settings

Activated

-

-

Maximum temperature (HI T)
Minimum temperature (LO T)
Maximum speed (HI R)
Minimum speed (LO R)
Fluid type (FLUI)

Menu

The type of temperature PID control arithmetic (AUTO)
(Heating)

Alarm and button tone (BEEP)

Calibration (CALI)

• Basic guide to setting the menu options:

F Enter the menu by pressing ”Menu” button (F)�

F Press the

“Temp (+)“ button (M) or “Temp (-)“ button (N)

to change the menu options�

F Press the

“Pump (+)“ button (J) or “Pump (-)“ button (K)

to change the menu value settings�

F Confirm the menu settings by pressing the

key (I)

�

•

Operating mode (MODE):

“OK/Pump“

AUTO 1
AUTO 0

BEEP 0
BEEP 1

CALI 0
CALI 2
CALI 3

• Minimum temperature (LO T):

Proportional coecient of PID (Kp 1)
Integrate time of PID (Ti 1)
Differential time of PID (Td 1)

The minimum adjustable value: - 20 °C�

•

Maximum speed (HI R):

The maximum adjustable value: 4000 rpm�

100 °C

- 20 °C
4000 rpm
2000 rpm
8

Activated
60�0
5�00
0�3

­Activated

Activated

-

-

Mode A: After power on/power failure no automatic re-

start of functions�

Mode B: After power on/power failure automatic restart

of functions, depending on previous settings�

Mode

C:

Set values (set in mode A or B) cannot be
changed� After power on/power failure automatic restart
of functions, depending on previous settings�

• Maximum temperature (HI T):

The maximum adjustable value: 100 °C�
This value can be limited additionally by the selected fluid
(No�, see “Fluid (Standard information for IKA® fluid)”�

Note: The maximum value is limited by the set safety
temperature�

•

Minimum speed (LO R):

The minimum adjustable value: 2000 rpm�

• Fluid type (FLUI):

The chosen fluid (No�) limits the maximum and minimum
temperature� Customized fluid (No�: 8) enables the whole
working temperature range� See Section “Fluids (Stan-

®

dard information for IKA

fluid)”�

12

• Temperature control type (AUTO) (heating):

°C

t

°C

t

°C

t

°C

°C

t

Proportional coecient of PID (Kp 1)

AUTO 1:

AUTO 1 is the default setting� The default PID settings are
used automatically�

Heating up curve in AUTO 1 control (AUTO 1):

Fig. 14

AUTO 0:
For special requirements, AUTO 0 can be used with man­ual adjustment of the control parameters�

If the PID control (AUTO 0) option is selected, the follow­ing items including Kp 1, Ti 1 and Td 1 could be set�
Otherwise they are not displayed in the menu list�

Note: Inappropriate settings may produce the following
heating up curves:

Kp too high

The proportional coecient Kp is the controller ampli­fication and determines how strongly the control devia­tion (the difference between the target temperature and
actual temperature) directly affects the control variable
(cooling down time)� Kp values that are too large can
lead to the controller overshooting�

Integral time of PID (Ti 1)

The integral time Ti (s) is the correction time and deter­mines how strongly the duration of the control deviation
affects the control variable� Ti compensates an existing
control deviation� A high Ti means a smaller and slower
effect on the control variable� Ti values that are too small
can lead to instability of the controller�

Differential time of PID (Td 1)

The differential time Td (s) is the derivative time and de­termines how strongly the rate of change of the control
deviation affects the control variable� Td compensates for
rapid control deviations� A high Td means a smaller and
slower effect on the control variable� Td values that are
too small can lead to instability of the controller�

Fig. 15

Ti too low

Kp too low
Ti too high

Td too high

t

•

Alarm and button tone (BEEP):

BEEP 0: no alarm and button tone
BEEP 1: alarm and button tone is activated

•

Calibration and adjustment (CALI):

CALI 0: Reset calibration
CALI 2: 2-point calibration
CALI 3: 3-point calibration

13

Example: 2-point calibration:

Dip the temperature sensor of the reference measuring
instrument into the bath fluid�

Select 2-point calibration in the menu� Press the “OK/
Pump“ button (I) to start the 2-point calibration�

The unit now starts and controls to the set value� When
the temperature has reached the set value and has be­come constant, the “Set” LED (C) no longer flashes and
the following display appears� The temperature measured
by the unit appears on the left hand side�

Set the first point temperature (step 1, e�g� 10 °C) with
“Pump (+)” button (J) or “Pump (-)” button (K)� Confirm
the setting by pressing “OK/Pump“ button (I)�

Left area of the display appears the set value (10 °C) and
the right area of the display appears the actual tempera­ture value measured� The “Set” LED (C) flashes briefly�

Interface and output

The device can be operated in “Remote” mode via the RS 232
port (5) or the USB port (6) connected to a PC and with the
laboratory software Labworldsoft®�

Note: Please observe the system requirements together
with the operating instructions and help section included
with the software�

USB interface:

The Universal Serial Bus (USB) is a serial bus for connecting
the device to the PC� Equipped with USB devices can be
connected to a PC during operation (hot plugging)� Con­nected devices and their properties are automatically recog­nized� The USB port can also be used to update firmware�

USB device driver:

First, download the latest driver for IKA® devices with USB
port from:
http://www.ika.com/ika/lws/download/usb-driver.zip.
Install the driver by running the setup file� Then connect the

IKA® device through the USB data cable to the PC�

The data communication is via a virtual COM port� Configu­ration, command syntax and commands of the virtual COM
ports are as described in RS 232 interface�

Device software update:
For device software update, visit IKA® website www.ika.
com and enter the “Service” menu� Download and run the

Firmware Update Tool�

Input the calibration value from the reference measuring
instrument (e�g� 10�1 °C) with “Pump (+)” button (J) or
“Pump (-)” button (K)�

Confirm the value by pressing the “OK/Pump“ button (I)�
Back to previous screen for input a new value by pressing
“Temp” button (L)�

Back OK

The first point calibration is finished now�
Calibration of the other points is performed in the same
way�

Find and click the Firmware Update Tool in your PC after
installation� Register your E-mail and password�
Connect the device to your PC via the USB cable� Then, you
can update the device software according to instructions of
the Firmware Update Tool�

RS 232 interface:

Configuration:

- The functions of the interface connections between the
stirrer machine and the automation system are chosen
from the signals specified in EIA standard RS 232 in ac­cordance with DIN 66 020 Part 1�

- For the electrical characteristics of the interface and the al­location of signal status, standard RS 232 applies in accor­dance with DIN 66 259 Part 1�

- Transmission procedure: asynchronous character transmis­sion in start-stop mode�

- Type of transmission: full duplex�

- Character format: character representation in accordance
with data format in DIN 66 022 for start-stop mode� 1
start bit; 7 character bits; 1 parity bit (even); 1 stop bit�

- Transmission speed: 9600 bit/s�

- Data flow control: none

- Access procedure: data transfer from the stirrer machine to
the computer takes place only at the computer’s request�

14

Command syntax and format:

The following applies to the command set:

- Commands are generally sent from the computer (Master)
to the device (Slave)�

- The device sends only at the computer’s request� Even
fault indications cannot be sent spontaneously from the
device to the computer (automation system)�

- Commands are transmitted in capital letters�

The above details correspond as far as possible to the recommendations of the NAMUR working party (NAMUR recom­mendations for the design of electrical plug connections for analogue and digital signal transmission on individual items of
laboratory control equipment, rev� 1�1)�
The NAMUR commands and the additional specific IKA® co mmands serve only as low level commands for communica­tion between the device and the PC� With a suitable terminal or communications programme these commands can be
transmitted directly to the circulator equipment� The IKA® software package, Labworldsoft®, provides a convenient tool for
controlling circulating equipment and collecting data under MS Windows, and includes graphical entry features, for pump
motor speed ramps for example�

Commands:

NAMUR Commands Function

IN_PV_2 Read the internal actual temperature
IN_PV_3 Read the safety actual temperature
IN_PV_4 Read the pump actual speed
IN_SP_1 Read the internal setting temperature
IN_SP_3 Read the safety setting temperature
IN_SP_4 Read the pump setting speed
OUT_SP_1 xxx Set the internal setting temperature XXX
OUT_SP_12@n Set the WD safety temperature with echo of the set (defined) value�
OUT_SP_4 xxx Set the pump speed XXX
OUT_SP_42@n Set the WD-safety speed with echo of the set (defined) value�
OUT_WD1@n Start the watchdog mode 1 and set the time for the watchdog to n (20���1500) seconds�

Echo of the Watchdog time�
During a WD1-event, the tempering and pump functions are switched off�
This command needs to be send within the watchdog time�

OUT_WD2@n Start the watchdog mode 2 and set the watchdog time to n (20���1500) seconds�

Echo of the watchdog time�
During a WD2-event, the set temperature is changed to the WD safety temperature and the
pump set speed is set to the WD safety speed�

This command needs to be send within the watchdog time�
RESET Reset the PC control and stop the device functions�
START_1 Start the tempering function�
START_4 Start the pump function�
STOP_1 Stop the tempering function�
STOP_4 Stop the pump function�

- Commands and parameters including successive param­eters are separated by at least one space (Code: hex 0x20)�

- Each individual command (incl� parameters and data) and
each response are terminated with CR LF (Code: hex 0x0d
hex 0x0A) and have a maximum length of 80 characters�

- The decimal separator in a number is a dot (Code: hex
0x2E)�

15

Connections between device and external devices:

9

6
7
8
9

PC 1�1 Cable:
This cable is required to connect RS 232 interface (5) to a PC�

Fig. 16

1
2
3
4
5

RxD 2
TxD 3

GND 5

RTS 7
CTS 8

9
8
7
6

1

4

6

9

1
2 RxD

3 TxD
4
5 GND
6
7 RTS
8 CTS

PC

5
4
3
2
1

USB 2�0 cable A - micro B:
This cable is required to connect USB interface (6) to a PC�

A

USB micro B

Fig. 17

USB A

Maintenance and cleaning

To avoid contamination, it is essential to change the bath
fluid regularly�
If water is used for bath fluid, we recommend to add Wa­ter bath protective media� The protective media stops the
growth of algae, bacteria and other microorganisms�

To keep the full cooling performance, the dust filter of the
cooler must be checked regularly and cleaned if necessary�

• Switch off the device and disconnect power cable�

• Open the front venting grid (3)�

• Remove the bracket�

• Clean condenser dust protection sheet with a vacuum
cleaner or wash the sheet in the water and dry the sheet
before assembly�

Note: Don’t touch the condenser surface with hard parts�

Cleaning:

Disconnect main plug prior to
cleaning!

Use only cleaning agents which have been approved by

®

to clean the device�

IKA

Dirt Cleaning agent

Dye Isopropyl alcohol
Construction material

Water containing tenside/
isopropyl alcohol

Cosmetics

isopropyl alcohol
Foodstuff

Water containing tenside/
isopropyl alcohol

Water containing tenside
Water containing tenside

Fuel Water containing tenside

For materials which are not listed, please request in­formation from IKA® application support.

Wear protective gloves while cleaning the devices�
Electrical devices may not be placed in the cleansing agent
for the purpose of cleaning�
Do not allow moisture to get into the device when cleaning�
If a different cleaning or decontamination method than the
method defined by IKA® is planned, the user must ascertain
with IKA® that this method does not damage the device�

Spare parts order:

When ordering spare parts, please give:

- machine type

- manufacturing number, see type plate

- item and designation of the spare parts,

see www.ika.com

- software version�

Repair:
Please send in device for repair only after it has been
cleaned and is free from any materials which may
constitute a health hazard.

For repair, please request the “Decontamination Clearance
Certificate” from IKA®, or download printout of it from the

IKA® website www.ika.com�

If you require servicing, return the device in its original pack­aging� Storage packaging is not sucient� Please also use
suitable transport packaging�

16

Error codes

Any malfunctions during operation will be identified by an error message on the display�
Proceed as follows in such cases:

F Switch off device using the main switch at the back of the device
F Carry out corrective measures
F Restart device

Error code Effect Cause Solution
Err 02 Pump off

Heating/refrigerating off

Err 04 Pump off

Heating/refrigerating off

Err 06 Pump off

Heating/refrigerating off

Err 09 Pump off

Heating/refrigerating off

Err 11 Pump off

Heating/refrigerating off

Err 12 Pump off

Heating/refrigerating off

Err 13 Pump off

Heating/refrigerating off

Err 15 Pump off

Heating/refrigerating off

Err 16 Pump off

Heating/refrigerating off

Err 17 Pump off

Heating/refrigerating off

Err 20 Pump off

Heating/refrigerating off

Motor over current (rate
current)

Motor hall signal missing - Reduce pump motor speed

Too low liquid level - Check the fluid level and buoyage

Device internal temperature is
too high

Temperature difference
between control sensor and
safety sensor is too much

Safety temperature alarm

Heater switched off by safety
circuit

Safety shutdown of the
compressor

Errors at the compressor
(suction side)

Errors at the compressor
(pressure side)

Fan cooling system error - Restart the device

- Reduce pump motor speed

- Use fluid with lower viscosity

- Check if the pump impeller is blocked

- Use fluid with lower viscosity

- Check if the pump impeller is blocked

- Check the ambient temperature and let the
device cool down

- Check the fan and clean the grids at the rear side

- Check safety temperature circuit and bath fluid

- Check the bath temperature measurement

- Check safety temperature set value, fluid level

- Restart the device

- Restart the device

- Restart the device

If the actions described fails to resolve the fault or another error code is displayed then take one of the following steps:

- Contact the service department

- Send the device for repair, including a short description of the fault�

Accessories

Tubing and hoses:
LT 5.20 Metal hose (isolated M16 x 1)
LT 5.21 PTFE hose (isolated M16 x 1)
H.PVC.8 PVC tube (nominal width 8 mm)
H.PVC.12 PVC tube (nominal width 12 mm)
H.SI.8 Silicone tube (nominal width 8 mm)
H.SI.12 Silicone tube (nominal width 12 mm)
H.PUR.8 PUR tube (nominal width 8 mm)
H.PUR.12 PUR tube (nominal width 12 mm)
H.FKM.8 FKM tube (nominal width 8 mm)
H.FKM.12 FKM tube (nominal width 12 mm)

See more accessories on www.ika.com�

Tubing insulations:
ISO. 8 Insulation (8 mm)
ISO.12 Insulation (12 mm)

Additional accessories:
PC 1.1 Cable (RS 232)
Labworldsoft

®

17

Technical data

Operating voltage VAC
Frequency Hz 50 / 60
Max� input power W 1800 (230 VAC) / 1500 (115 VAC) / 1210 (100 VAC)
Working temperature range °C - 20 ��� + 100
Operating temperature range
Temperature stability – internal temperature control

70

°C, water
Temperature control PID
Temperature measurement, absolute accuracy K ± 0�5
Temperature setting Button
Temperature setting resolution K 0�1
Temperature display LED
Temperature display resolution K 0�1
Classification according to DIN 12876-1 Class III (FL) suitable for flammable and non-flammable fluids
Safety circuit (adjustable) °C 0 ��� + 110
Safety temperature display LED
Heating capacity W 1500 (230 VAV) / 1200 (115 VAC) / 910 (100 VAC)
Cooling capacity according to DIN 12876 (at 4000 rpm):

+ 20 °C
+ 10 °C
0 °C

- 10 °C

- 20 °C
Refrigerant

Refrigerant quantity g 230
Max� refrigerating system pressure bar 20
Pump speed (adjustable) rpm 2000 ��� 4000
Max� pump pressure/suction bar 0�5 / 0�25
Max� flow rate (at 0 bar) l/min 21
Bath volume I 1�4–4�0
Fluid maximum viscosity mm
Low fluid level protection Yes
Interface USB, RS 232
Permitted on-time % 100
IP code according to EN 60 529
Protection class
Excess voltage category II
Contamination level 2
Permitted ambient temperature °C + 5 ��� + 32
Permitted ambient humidity % 80
Dimension (W x D x H) mm 220 x 525 x 475
Weight kg 28�5
Operation at a terrestrial altitude m max� 2000

(according to DIN 12876)

°C - 20 ��� + 100
K ± 0�1

W 400

230 ± 10 % / 115 ± 10 % / 100 ± 10 %

370
320
240
130

R134a 

2

/s 50

IP 21
I

Note: Refrigerant must be disposed of in accordance with local and national regulations�

Subject to technical changes!

18

Warranty

0 5 10 15 20

500

-

-200

-300

In accordance with IKA® warranty conditions, the warranty
period is 24 months� For claims under the warranty please
contact your local dealer� You may also send the machine
direct to our factory, enclosing the delivery invoice and giv­ing reasons for the claim� You will be liable for freight costs�

The warranty does not cover worn out parts, nor does it ap­ply to faults resulting from improper use, insucient care or
maintenance not carried out in accordance with the instruc­tions in this operating manual�

Pump performance curve

Pumpenkennlinie gemessen mit Wasser:

(Messung nach DIN 12876-2 mit Wasser bei 20°C, geschlossener Pumpen-Kreislauf)�

400

300

200

100

ΔP [mbar]

0

100

Fig. 18

4000 rpm

3200 rpm

2000 rpm

Q [l/min]

19

IKA®-Werke GmbH & Co.KG

Janke & Kunkel-Str� 10
D-79219 Staufen
Tel� [phone]
Fax [phone]
sales@ika�de

www.ika.com