Alexika Dry Block Heater 2: CAUTION WARNING DANGERDANGER

10

Source language: German

EN

Page

EG-Declaration of conformity 

10

Explication of warning symbols 

10

Safety instructions 

11

Unpacking 12

Correct use 

12

Assembling the stand 

12

Operation 13

Setting the operating mode 

13

Controlling the temperature via contact thermometer 

14

Maintenance and cleaning 

14

Error codes 

15

Technical data 

16

Warranty 16

Contents

We declare under our sole responsibility that this product corresponds to the regulations 2006/95/EEC and 2004/108/EEC and con-

forms with the standards or standardized documents DIN EN IEC 61010-1, -2-010 and DIN EN IEC 61326-1.

EG-Declaration of conformity

Explication of warning symbols

                      General hazard

This symbol identifies information 

that is of vital importance for safeguarding your health 

and safety

. Disregarding this information can lead to health impairment and injuries.

This symbol identifies information 

that is of importance for the technically correct functio-

ning of the system

. Disregarding this information can result in damage to the appliance or to 

system components.

This symbol indicates information 

which is important for proper use of the appliance and/

or ensuring that the appliance functions correctly

. Failure to observe this information can 

lead to inaccurate results.

Danger of being burnt! - Note on hazards arising from a hot surface.

CAUTION WARNING DANGER DANGER

11

Safety instructions

Safety instructions - performance of trials

•Wear  your  personal  protective  equip

-

ment in accordance with the hazard 

category of the media to be processed. 

Otherwise there is a risk from:

- splashing and evaporation of liquids

- ejection of parts

- release of toxic or combustable gases.

• Immerse external temperature sensors (PT 1000 ...) at least 20 

mm deep into the medium or insert the sensor into the hole 

provided for the purpose in the temperature control block.

• The PT 1000 external temperature sensor must always be inser

-

ted in the block / media when connected.

• Do not heat liquid media except with the block. Never pour 

liquid media directly on to the heating plate!

• Safe operation is only guaranteed with the accessories descri

-

bed in the ”Accessories” chapter.

• Always disconnect the plug before fitting accessories.

• Accessories must be securely attached to the device and can

-

not come off by themselves. The centre of gravity of the as-

sembly must lie within the surface on which it is set up. 

• Refer to the operating instructions for the accessories.

Safety instructions - power supply/ switching off the device

•

The appliance can only be disconnected 

from the mains supply by pulling out the 

mains plug or the connector plug.

• The device will automatically restart in mode B following any

interruption to the power supply.

For protection of the equipment

• The appliance may only be opened by experts.

• Do not cover the device, even partially e.g. with metallic plates 

or film. This results in overheating.

• Ensure that the base plate is kept clean.

• Protect the appliance and accessories from bumps and impacts.

•  Observe  the  minimum  distances  between  the  devices,  bet

-

ween the device and the wall and above the assembly (min. 

800 mm), see fig. 2.

General safety instructions

• 

Read the operating instructions in full before starting 

up and follow the safety instructions.

• Keep the operating instructions in a place where they can be   

accessed by everyone.

• Ensure that only trained staff work with the appliance.

• Follow the safety instructions, guidelines, occupational health   

and safety and accident prevention regulations

• Socket must be earthed (protective ground contact).

•  Before  starting  the  device  for  the  first  time,  ensure  that  the 

connector cable is suitable for the type of socket used and that 

a safe protective earth connection is assured.

• 

Risk of burns! 

Exercise caution when 

touching the housing parts and the hea-

ting plate. The heating plate can reach 

temperatures in excess of 120 °C. Pay at-

tention to the residual heat after switching 

off. 

The device may not be transpor-

ted unless it is cold!

Safety instructions - device arrangement

• 

Do not 

operate the appliance in explo-

sive atmospheres, with hazardous subs-

tances or under water.

•  Set  up  the  appliance  in  a  spacious  area  on  an  even,  stable, 

clean, non-slip, dry and fireproof surface.

• The feet of the appliance must be clean and undamaged.

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

mains voltage.

• The socket for the mains cord must be easily accessible.

• 

The power supply cable and cables to the external sensors must 

not be allowed to come into contact with the hot mounting plate.

• Check the appliance and accessories beforehand for damage 

each time you use them. Do not use damaged components.

Safety instructions - permissible media

• 

Caution! 

Only media whose flashpoint 

lies above the safety temperature limit of 

130 °C may be processed or heated with 

this device.

• Beware of hazards due to:

- flammable materials

- combustible media with a low boiling

  temperature

- glass breakage

- incorrect container size

- overfilling of media (in a beaker)

- unsafe condition of container.

•  Process  pathogenic  materials  only  in  closed  vessels  under  a 

suitable extractor hood. Please contact  

IKA

®

 if you have any 

questions.

• Only process media that will not react 

dangerously to the extra energy produ-

ced through processing. This also applies 

to any extra energy produced in other 

ways, e.g. through light irradiation.

• Bear in mind the possibility of contamination that might lead to 

undesirable chemical reactions.

Fig. 2

DANGER

DANGER

WARNING

WARNING

DANGER

WARNING

WARNING

12

Unpacking

• 

Unpacking

- Please unpack the device carefully

- In the case of any damage a fact report must be sent imme-

diately (post, rail or forwarder)

• 

Delivery scope

- IKA

®

Dry Block Heater,

  Depending on the 

IKA

®

 Dry Block Heater model 1.2, 3, or 4

- Mains cable

- Temperature sensor PT 1000.60

- Operating instructions

Correct use

• 

Use

- For heating media in block heaters

• 

Range of use (interior areas only)

- Laboratories 

- Schools

- Pharmacies 

- Universities

The safety of the user cannot be guaranteed if the appliance is 

operated with accessories that are not supplied or recommended 

by the manufacturer or if the appliance is operated improperly 

contrary to the manufacturer’s specifications or if the appliance 

or the printed circuit board are modified by third parties.

Assembling the stand



 Remove the protective cap from the support rod.



 Put the washer between housing and nut.



 Screw the support rod onto the device by hand until the end 

stop is reached.



 Using an open-jaw spanner 17 AF 

gently

 tighten the nut 

(tightening torque max. 0.5 Nm)

.



 Accessories should be attached using cross sleeves.

Fig. 3

13

Operation

Setting operating mode

Operating the device in mode A or B

Mode A

All settings will be stored if the device is switched off or discon-

nected from the power supply. The heating functions will be set 

to OFF when the device is powered on.

Mode B

All settings will be stored if the device is switched off or discon-

nected from the power supply. The heating function will be set 

to ON or OFF when the device is powered on, depending on the 

previous status of the device..

Factory setting: mode A

The mode selected will be shown on the display when the 

device is started up.

Change the mode

 

    Move device switch 

(E)

 to the OFF position

 

    Keep the selection button 

(I)

 and 

(F) 

depressed 

 

    Move device switch 

(E) 

to the ON position

 

    Release the selection button 

(I) 

and 

(F)

     i



 The set mode is indicated on the

    Display 

(Q) 

     b

A

Mode

IKA

®

 Dry Block Heater 1

IKA

®

Dry Block Heater 2

IKA

®

Dry Block Heater 3

IKA

®

Dry Block Heater 4

   Commissioning



 Move device switch

 (E)

 to the OFF position



 Insert the mains power cable into the power socket

 (A

)



 Move device switch 

(E) 

to the ON position



 The unit will be set to factory setting mode A (see “Operating modes”)

         Heating



 Set the target temperature using the heater buttons +/- 

(J)

 and 

(K)



 The value selected will be shown on the display 

(L)



 Start the heating function by pressing the "Start / Stop" button 

(F)

    The set-point and actual temperatures will be shown alternately on the display (

(L) 

is

blinking):

i



 When the heating is on, the LED 

(O)

 lights up. 

i



 During standby operation, the display

 (L)

 will show  HOt

if the base plate tempe- 

  ature is above 50 °C

        Connecting



 Move device switch 

(E)

 to the OFF position

         external



 Detach contact plug 

(D)

     thermometers



 Attach a DIN 12878 (Class 2) compliant safety contact thermometer or a

 (

direct temperature

  PT 1000.60 temperature sensor to the socket 

(B)

    control in the media)



 Move device switch 

(E) 

to the ON position

i

Temperature sensor PT 1000



 The actual temperature for the temperature sensor shown on

    display 

(L)

 will correspond to the temperature of the media.

    The LED "external temperature sensor"” PT 1000 

(N) 

will be lit.

14

Controlling the temperature via contact thermometer

The preferable method for controlling the average temperature 

is with the contact thermometer. After the set point tempera-

ture has been adjusted, this results in a short heating-up time, 

practically no temperature drift and only minor fluctuation in 

temperature.

A 6-pin jack is located on the rear side of the instrument for 

connecting the contact thermometer or the contact plug. The 

electronics of the instruments returns a test current that must 

flow via connector pins 3 and 5 for the heating plate to heat up.

Settings

For the detailed instructions for settings and limit values, refer to 

the operating instructions for the instrument you are connecting.

The target temperature of the medium is set at the contact 

thermometer. The heater buttons +/- 

(J)

 and 

(K) 

on the de-

vice can be used to preselect the required surface tempera-

ture of the heating plate.

Safety contact thermometers

acc. to DIN 12 878 class 2 or acc. Gerstel are connected with 

a three-wire cable, the test current flows through the contact 

thermometer.

Safety function

If the test current is interrupted because of e.g. breakage of 

contact thermometer or falling out of the cable plug, the hea-

ting cuts off. The required plug allocation is indicated on a refe-

rence plate above the diode bushing.

Contact thermometer without safety circuit

acc. to DIN 12 878 class 0. The instrument only heats if the test 

current circuit is closed by an electrical connection of the plug 

pins 3 and 5.

Maintenance and cleaning

The device is maintenance-free.

Cleaning

For cleaning disconnect the main 

plug.

 Only use cleansing agents which have been recommended by  

IKA

®

.

Dyes 

Isopropyl alcohol

Construction materials 

Water containing surfactant,

isopropyl alcohol,

Cosmetics 

Water containing surfactant,

isopropyl alcohol

Foodstuffs 

Water containing surfactant

Fuels 

Water containing surfactant

- Do not allow moisture to get into the appliance when cleaning.

- Wear protective gloves when cleaning the devices.

- Please consult with 

IKA

®

 before using any cleaning or deconta-

mination methods, other than those recommended here.

Ordering spare parts

When ordering spare parts, please give:

- Machine type

- Manufacturing number, see type plate

- Item number and designation of the spare part, see  

www.ika.com

- Software version

Repair

In case of repair the device has to be cleaned and free from any 

materials which may constitute a health hazard. Please request 

the form to "clearance certificate" from IKA. Or, use the down-

load-print the form to the 

IKA

®

 website 

www.ika.com

.

If you require servicing, return the appliance in its original  

packaging. Storage packaging is not sufficient. Please also use 

suitable transport packaging.

Timer/Counter

After the device has been switched on, the "Timer/ Counter" but-

ton 

(I)

 can be used to toggle between timer mode and counter 

mode.

Timer

Pressing the buttons "+" 

(G)

 and "-" 

(H)

 allows selection of a 

time period of up to 99 hours and 59 minutes. Once the heating 

function 

(F)

 is activated, the preset time starts to run. When the 

total time has run down to 00 hours and 00 minutes, a warning 

buzzer sounds for 30 seconds and in addition the display flashes. 

The heating function is then deactivated.

Counter

When the heating function is stated by pressing the button 

(F) 

the counter is activated. In counter mode the time is counted 

upwards from 00 hours 00 minutes until the heating function is 

stopped. The counter always starts from 00:00 hh:mm.

Selection of Timer/Counter

Pressing the button 

(I)

 toggles between timer mode and counter 

mode. The mode can be activated only when the heating func-

tion is off.

15

Error codes

Any malfunctions during operation will be identified by an error message on the display

(LED 

(Q)

).

Proceed as follows in such cases:



 Switch off device using the main switch 

(E)



 Carry out corrective measures



 Restart device

  Error code 

Cause 

Effect 

Solution

  E 3 

Temperature inside device too high 

Heating off 

Switch off device and allow to cool down

  E 6 

Break in safety circuit 

Heating off 

- Plug in contact plug

 (D)

- Plug in PT 1000 contact thermometer / 

   temperature sensor

- Replace faulty connecting cable, plug, or 

   contact thermometer

  E 25 

Heating and switching element monitoring 

Heating off 

- Switch off device

- 

Warning!

 Only to be carried out by autho-

   rised service personnel: Carry out an internal

   test on the device to check the plug-in 

   connector for the heating element

  E 26 

Difference between temperature of safety  

Heating off 

- Switch off device

sensor and temperature of control sensor 

- 

Warning!

 Only to be carried out by autho-

control temperature

 > (safety temperature 

  rised service personnel: Carry out an internal

+ 40 K)) 

   test on the device to check the temperature 

   sensor

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

- contact the 

IKA

®

 service department,

- send the device for repair, including a short description of the fault.

16

Technical Data

IKA

®

IKA

®

IKA

®

IKA

®

Dry Block  

Dry Block 

Dry Block 

Dry Block

Heater 1 

Heater 2 

Heater 3 

Heater 4

 Operating voltage range  

Vac  

220 - 230 ± 10%

Vac  

115 ± 10%

Vac  

100 ± 10%

 Rated voltage 

Vac  

230/ 50 Hz

Vac  

115/ 60 Hz

Vac  

100/ 60 Hz

 Frequence  

Hz  

50 / 60

 Display  

digital

 Temperature range 

°C 

ambient temperature +5 - 120

 Timer 

min/h 

1 min to 99 h 59 min

 Perm. duration of operation 

%  

100

 Perm. ambient temperature 

°C  

+5 to +40

 Perm. humidity 

% 

80

 Protection acc. to DIN EN 60529 

IP 21

 Protection class 

I

 Overvoltage category 

II

 Contamination level  

2

Operation at a terrestrial altitude 

m 

max. 2000 about sea level

Dimension (W x D x H) 

mm   115 x 228 x 73   115 x 304 x 73  

115 x 380 x 73  

115 x 456 x 73 

 Weight  

kg 

           1 

          1,3 

          1,6 

           2

 Heating

 Power consumption (+10%) max. at 230 Vac  

W  

165  

250 

330 

412

                                                         115 Vac  

165   

250 

330 

412

                                                         100 Vac  

165   

250 

330 

412

 Temperature sensor PT 1000 variation  

K 

< + 0,1*

 DIN EN 60751 Kl. A 

 Temperature variation at 37 ºC K 

+ 0,5*

 Temperature variation at 60 ºC 

K 

+ 1,5*

 Fixed safety circuit

 Safety temperature limit 

°C 

150

* Test parameter: with test block and glass vessel filled with M50 oil

Subject to technical changes!

Warranty

The warranty does not cover worn out parts, nor does it apply 

to faults resulting from improper use, insufficient care or mainte-

nance not carried out in accordance with the instructions in this 

operating manual.

In accordance with 

IKA

®

 warranty conditions, the warranty pe-

riod 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.