Thermo_Haake_DC50 Circulator & Baths_Manual

Instruction Manual

Circulator DC50 including all Baths

Part No. 003-3052

1-1-063-2 01.2002

Thermo Haake

(International)

Dieselstraße 4

D-76227 Karlsruhe

Tel.

+49(0)721 4094-444

Fax +49(0)721 4094-418 [email protected]

www.thermohaake.com

Thermo Haake

(USA)

25 Nimble Hill Rd.

Newington, NH 03801

Tel.

Fax

603 430 6329

603 430 6330 [email protected]

www.thermohaake.com

Thermo Temperature

Control BV

(Benelux)

Meerenakkerplein 31

5652 BJ Eindhoven

Tel.

040 2300236

Fax 040 2549485 [email protected]

Table of Contents

1.

Key to Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1

Symbols used in this manual

1.2

Symbols used on the unit

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

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

1.3

Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.

Quality Assurance . . . . . . . . . . . . . . . . . . . . . . . . . .

3.

Your Contacts at Thermo Haake . . . . . . . . . . . . . .

4.

Thermo Haake Test Certificate

5.

Safety Notes

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

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

6.

Unit Description

6.1

Safety features

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7

8

6

6

4

4

4

5

6.2

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.3

Temperature ranges . . . . . . . . . . . . . . . . . . . . . . . . . .

11

11

6.4

Unit combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.

Unpacking / Setting Up . . . . . . . . . . . . . . . . . . . . . . 13

7.1

Transportation damage?

. . . . . . . . . . . . . . . . . . . . . . 13

7.2

Ambient conditions according to DIN EN 61010 . . 13

7.3

Resting time after transportation

(only for refrigerated circulators) . . . . . . . . . . . . . . . 13

7.4

Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7.5

Information concerning the CE sign . . . . . . . . . . . . 14

8.

Functional and Operating Elements

8.1

Temperature control module DC50

. . . . . . . . . . 15

. . . . . . . . . . . . . 15

8.2

Bath vessel “W” and integral bath ”P” . . . . . . . . . . .

8.3

Bath vessel “B3” and integral bath ”P5” . . . . . . . . .

16

17

8.4

Bath vessel V15 / V26 . . . . . . . . . . . . . . . . . . . . . . . . 18

8.5

Bath vessel K15 / K10 / K20 . . . . . . . . . . . . . . . . . . .

8.6

Bath vessel K75

(example model K35, K40, K41, K50) . . . . . . . . . . .

19

20

9.

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

9.1

Immersion circulators with bracket mounting

9.2

Open-bath circulators with angled mountings

. . . . . 23

. . . . 24

9.3

Open-bath circulators with bath bridge and stainless steel or polyacrylic baths . . . . . . . . . . . . . . 25

9.4

Open-bath cirulators with bath bridge H64 and bath vessel P14 and P21 . . . . . . . . . . . . . . . . . . . . . . 26

9.5

Open-bath cirulators with bath bridge and bath vessel V15 and V26 . . . . . . . . . . . . . . . . . . . . . . 27

9.6

Subsequently fitting a circulation set

9.7

Subsequently fitting a cooling coil

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

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

28

29

9.8

Fitting a lifting platform to the bridge . . . . . . . . . . . . 30

9.9

Open-bath and heating circulators with bath bridge and polyacrylic bath W5P . . . . . . . . . . . . . . . 31

9.10 Open-bath and heating circulators with bath bridge and integral bath P5/U . . . . . . . . . . . . . . . . . . 31

9.11 Open-bath circulators with bath bridge and integral bath P5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

10. Connecting Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . 33

1


10.1 Plastic hoses

10.2 Metal hoses

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

10.3 Tap water cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.3.1 Connection to cooling (tap) water . . . . . . . .

35

35

10.4 External Cooling Devices

10.5 Pressure pump

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

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

35

36

10.5.1 Temperature controlling an object in the internal bath . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

10.5.2 Connection of external closed systems . . . 36

11. Filling with Bath Liquid . . . . . . . . . . . . . . . . . . . . . 37

11.1 Recommended bath liquids . . . . . . . . . . . . . . . . . . . . 37

11.2 Filling with heat transfer liquid

12. Draining

. . . . . . . . . . . . . . . . . 40

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

13. Connecting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.1 Connecting to the mains

42

. . . . . . . . . . . . . . . . . . . . . . 42

13.1.1 Only for refrigerated baths K15, K10, K20,

V15 and V26 . . . . . . . . . . . . . . . . . . . . . . . . . . 42

13.1.2 Only for refrigerated baths K35, K40, K41,

K50 and K75 . . . . . . . . . . . . . . . . . . . . . . . . . . 42

13.2 Checking the liquid circuit

13.4 Fuses on the unit

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

13.3 Changing the mains plug (e.g. for Great Britain) . . 43

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

42

43

14. Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14.1 Switching on

44

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

14.2 Adjusting the variable set temperature . . . . . . . . . .

14.3 Adjusting the fixed temperatures F1 to F3 . . . . . . .

45

45

14.4 Heating control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 46

14.5 Working with internal or external control sensors . 46

14.6 Working with or without cooling(not for K15, K20) 47

15. Excess Temperature Protection . . . . . . . . . . . . . .

15.1 Excess temperature protection dial

48

. . . . . . . . . . . . . 48

15.1.1 Setting the excess temperature

15.1.2 Testing the cut-off point

. . . . . . . . . .

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

49

49

16. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

16.1 Set value SET and fixed temperatures F1 to F3 . . 50

16.2 Reading the temperature at the internal/external sensor . . . . . . . . . . . . . . . . . . . . . . . 51

16.3 Adjusting the correction factors (RTA-system) . . . . 51

16.4 Displaying the version of the operating software . . 53

16.5 Autostart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16.6 Switching–on external control . . . . . . . . . . . . . . . . . .

53

53

16.7 External sensor (only with external control = OFF) 53

16.8 Refrigeration control . . . . . . . . . . . . . . . . . . . . . . . . . . 54

16.9 Refrigeration HT

(refrigeration control in the range above 100

°

C) . . 54

16.10Dialog language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

16.11 Adjusting the LED display contrast . . . . . . . . . . . . . 54

2


16.12Resolution of the temperature display . . . . . . . . . . . 54

16.13Adjusting temperature limit values . . . . . . . . . . . . . . 55

16.14Temperature difference ”dt” between internal and external bath vessel . . . . . . . . . . . . . . . . . . . . . . . . . . 56

16.15Setting the interface parametersr

16.16Baud rate

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

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

57

57

16.17Parity

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

16.18”Handshake” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16.19Only for RS485: Setting the device address . . . . .

57

58

17. Fault Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

17.1 Excess temperature

17.2 Low liquid level

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

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

59

59

17.3 Pump or motor overloading . . . . . . . . . . . . . . . . . . . .

17.4 Sensor breakage or short circuit internal . . . . . . . .

60

60

17.5 Sensor breakage or short circuit external . . . . . . . . 60

17.6 Refrigeration unit fault . . . . . . . . . . . . . . . . . . . . . . . . 60

17.7 External fault RS232C or RS485

(depending on the unit type) . . . . . . . . . . . . . . . . . . . 60

17.8 Undefined fault

17.9 Fault eliminated?

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

18. Testing the Safety Features . . . . . . . . . . . . . . . . . . 62

18.1 Excess temperature protection

18.2 Low liquid level protection

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

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

62

62

19. External Connections

19.1 Shielded Cables

. . . . . . . . . . . . . . . . . . . . . . . 63

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

19.2 External Pt100 sensor . . . . . . . . . . . . . . . . . . . . . . . .

19.3 Socket for refrigerated unit . . . . . . . . . . . . . . . . . . . .

63

63

19.4 Interface RS232C and RS485 see chapter 20.

. . . 63

20. Interface RS232C or RS485

20.1 Connecting to a computer

. . . . . . . . . . . . . . . . . . 64

. . . . . . . . . . . . . . . . . . . . . 64

20.1.1 PC with an RS232C interface . . . . . . . . . . . . 64

20.1.2 PC with an RS485 interface

20.2 Interface parameter

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

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

65

66

20.3 Requirements made of external units

20.4 Storing of desired values

. . . . . . . . . . .

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

66

66

20.5 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

20.6 Operating status / Error message

20.7 Controlling via a BASIC program

. . . . . . . . . . . . . . 70

. . . . . . . . . . . . . . . 71

21. Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

72

73

22.1 Cleaning the fins of the liquefier

22.2 Discarding the unit:

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

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

73

73

23. Disassembly for Servicing

24. Technical specifications

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

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

74

75

24.1 Temperature control module DC50 to DIN 58966 . 75

24.2 Fuse values DC50 . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

24.3 Technical specifications of the refrigerated baths . 76

24.4 Fuse values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

24.5 Dimensions, material and the permissible temperature ranges of the baths . . . . . . . . . . . . . . . 77

3

Key to Symbols

1.

Key to Symbols

1.1

Symbols used in this manual

!

Warns the user of possible damage to the unit, draws attention to the risk of injury or contains safety notes and warnings.

Denotes an important remark.

1

⇒

Indicates the next operating step to be carried out and

…

… what happens as a result thereof.

1.2

Symbols used on the unit

Caution: Read the instruction manual!

Adjustment possibility for setting the cut-off point for excess temperature protection

Menu selection

Value alteration (

↓

) higher / (

↑

) lower

Enter key

Reset button (for usage after a fault or interruption)

4

Key to Symbols

1.3 Menu Tree

5

Quality Assurance

/ Your Contacts at Thermo Haake

2.

Quality Assurance

Dear customer,

Thermo Haake implements a Quality Management System certified according to EN 29001.

This guarantees the presence of organizational structures which are necessary to ensure that our products are developed, manufactured and managed according to our customers expectations. Internal and external audits are carried out on a regular basis to ensure that our QMS system is fully functional.

We also check our products during the manufacturing process to certify that they are produced according to the specifications as well as to monitor correct functioning and to confirm that they are safe. This is why we initiate this monitoring process of important characteristics already during manufacturing and record the results for future reference.

The “Final Test” label on the product is a sign that this unit has fulfilled all requirements at the time of final manufacturing.

Please inform us if, despite our precautionary measures, you should find any product defects. You can thus help us to avoid such faults in future.

Thermo Haake (International)

Dieselstraße 4

D-76227 Karlsruhe, Germany

Tel.

+49(0)721 4094–0

Fax +49(0)721 4094–300

Hotline +49(0)18 05 04 22 53

E-mail [email protected]

www.thermohaake.com

3.

Your Contacts at Thermo Haake

Please get in contact with us or the authorized agent who supplied you with the unit if you have any further questions.

Thermo Haake (USA)

25 Nimble Hill Rd.

Newington, NH 03801

Tel. 603–430–6329

Fax 603–430–6330

Thermo Temperature

Control BV (Benelux)

Meerenakkerplein 31

5652 BJ Eindhoven

Tel. 040 2300236

Fax 040 2549485 [email protected]

www.thermohaake.com

[email protected]

Thermo Haake

TYP

V/Hz

Dieselstr. 4

D–76227 KARLSRUHE

The following specifications should be given when product enquiries are made:

– Unit name printed on the front of the unit,

– TYP as specified on the name plate.

– Version of the operating software (see chap. 16.4).

6

Test Certificate

4.

Thermo Haake Test Certificate

This is to certify that the tempering device which you have acquired and to which these instructions for operation refer has been tested and equilibrated by Thermo Haake in compliance with the regulations of a certified Quality Assurance

System according to DIN ISO 9001.

Testing for constancy of temperature has been carried out in keeping with DIN standard DIN 12876 for laboratory equipment. (follow–up standard to DIN standard 58966).

The measuring equipment used in the testing process is regularly calibrated and can be traced back to the national norms of the Physikalisch Technische Bundesanstalt (PTB)

Deutschlands 1 or to other national norms. In those cases where there are no norms and standards on a national level, the testing process is in keeping with currently valid technical rules and regulations, norms and standards.

All required measuring data are listed on this page of the Test

Certificate.

Measuring conditions

Ambient temperature:

Power supply / –frequency:

+ 20 °

230V

C

± 5V / 50 Hz

System parameters

Volume:

Liquid:

Rated temperature:

Measuring process

8 litre

Water

+70 ° C

Checking constancy of temperature in bath according to

DIN 12876, part 2 (follow–up standard to DIN 58966, part 2, paragraph 4.3)

Measuring agent

Type of sensor used for measuring: Quartz Inexactitude of measurement according to DIN IEC 751 +/– 0,1 K

Test results

Constancy of temperature (Width of control range):

Stability of temperature (persistent):

Accuracy at +70 ° C:

+/– 0,01 K

+/– 0,01 K

+/– 0,1 K

The individual test certificate for your thermostat will be provided upon request.

We and our partners shall gladly be at your disposal for a calibration of your thermostat at your premises. Just contact us.

7

Safety Notes

!

!

!

!

!

!

!

!

!

!

!

5.

Safety Notes

These notes are intended to draw your attention to risks which only YOU can recognize and avoid or overcome. They are intended to enhance your own safety consciousness.

We have set the highest quality standards for ourselves and this unit during development and production. Every unit meets relevant safety regulations. The correct unit usage and proper handling is however solely your responsibility.

The intended workplace should correspond to a laboratory or pilot plant environment. The user should have an education level which is at least equivalent to a trained laboratory worker or specialized chemist. The following list should be seen as an example.

The device may not be operated if there are any doubts regarding a safe operation due to the outer appearance

(e.g. damages).

A safe operation of the instrument cannot be guaranteed if the user does not comply with this instruction manual.

Ensure that this manual is always at hand for every unit operator.

Only use this unit solely for the intended application.

Repairs, alterations or modifications must only be carried out by specialist personnel. Consider the manufacturer’s instruction manuals.

Considerable damage can be caused by improper repairs. The Thermo Haake service department is at your disposal for repair work.

Do not operate the unit with wet or oily hands.

Do not expose the unit to spray water or immerse it in water.

Do not clean the unit with solvents (fire risk!), a wet cloth soaked in household detergent is normally sufficient.

This device is not designed according to the standard

EN 60601-1: 1990 (DIN VDE 0750-1 and IEC 601-1) and should not be operated in rooms used for medical purposes and/or in the vicinity of patients.

Many units parts can become hot as a result of normal unit functioning – there is a high risk of burns!

The overall temperature of the marked zone (see fig.) will become higher than 70 °C when the bath tempera- ture exceeds approx. 150 °C. Please ensure that ade- quate contact protection is provided.

Do not move the unit from the position where it was set up during operation or when it is still hot. There is a high risk of burns!

8

Safety Notes

!

!

Only use water or water with anti-freeze as bath liquid.

The temperature controlling i.e. immersing of test tubes,

Erlenmeyer flasks or similar objects directly within the circulator constitutes normal circulator practise.

We do not know which substances are contained within these vessels. Many substances are dangerous:

• inflammable, easily ignited or explosive

• hazardous to health

• environmentally unsafe

You alone are responsible for the handling of these substances! Our advice:

•

If in doubt, consult a safety specialist.

•

Read the product manufacturer’s or supplier’s EC

Safety Data Sheet according to directive 91/155/EEC.

•

Read relevant regulations concerning dangerous materials.

•

Observe relevant guidelines for laboratories in your country.

The following measures were taken for the protection of the operator:

•

Protection Class I according to VDE 0106 T1 i.e. protection against electric shocks by grounding all parts which carry the risk of electric contact.

The device must only be connected to mains receptacles with a protective ground.

•

Protection IP 20 according to EN 60529 i. e. regarding the protection against accidently touching live parts and damage by foreign matter, it has been ensured that foreign bodies with a thickness or diameter of more than 12 mm cannot penetrate.

No special precautions were taken against the penetration of water and dust. The device should therefore not be used in a dusty atmosphere or in the neighborhood of spray water.

Do not insert wires or tools in any of the openings.

!

Complete separation from the mains is required when:

• all dangers caused by this device are to be avoided,

• cleaning is carried out,

• repairs or maintenance by specialist personnel is about to be carried out

Complete separation means:

Pull out the mains plug!

9

Unit Description

6.

Unit Description

This device contains safety elements according to category

FL making it suitable for unattended continuous operation.

A variably adjustable excess temperature protection and independent low liquid level protection which is preset to the lowest level allow the usage of different heat transfer liquids.

The circulator pump motor is protected against thermal overloading. Two pump speeds can be selected.

6.1

Safety features

The comprehensive safety system is designed on the principle of the concept of the “single fault” (EN 61010). This assumes that two separate faults do not occur simultaneously.

This system therefore offers protection against one (single) fault. This one fault will effectively occur automatically if you...

• do not read this manual,

• do not correctly set the excess temperature protection, i.e. your safety reserves have already been used up.

Such faults can include e.g.:

Fault in the temperature control unit:

⇒ Excess temperature ⇒ poss. fire danger

Leakage in the liquid circuit or

Evaporation of heat transfer liquid:

⇒ Low liquid level ⇒ poss. fire danger, destruction of polyacrylic bath vessel

Pump blocked or

Heat transfer liquid is too highly viscous:

⇒ Motor overheating ⇒ poss. fire danger

Or also:

Excess temperature protection level not correctly set:

⇒ poss. fire danger

10


If a safety feature is triggered …

•

Fault Identification System (FIS) and an acoustic signal indicate the fault,

• the safety-relevant components of the heating unit

(heating element and motor) are switched off immediately i.e. the safety circuit transfers the unit to a stable, safe condition,

• the heat transfer liquid in the heating unit gradually adjusts to ambient temperature, but …

!

For units with switched on compressor cooling, this cooling remains functional and thus cools the heat transfer liquid to the lowest reachable temperature.

6.2

Applications

Open-bath circulators:

For temperature controlling samples within the circulator’s own bath.

Heating and refrigerated circulators:

For temperature controlling closed temperature control circuits such reactors, heat exchangers or similar objects.

Separate open vessels cannot be temperature controlled as these circulators are only equipped with a pressure pump.

6.3

Temperature ranges

Working temperature range:

The temperature range of the circulator without additional heating or cooling sources.

Operating temperature range:

The temperature range of the circulator which can be reached if additional heating or cooling sources are used.

Tap water can be used as a cooling source. In this case the minimum working temperature possible is approx. 3

°

C above that of the tap water temperature.

11


!

High operating temperatures mean the unit surfaces heat up. Protective measures must be taken!

Mains cable:

!

The mains cables used for the temperature control module DC50 are specially designed for usage with heating elements. They can be allowed to come into contact with parts which are heated up to a temperature of max. 250

°

C.

Warning for maintenance personnel: Please ensure that the same sort of cable is used in case of replacement!

(Order no. 082-2409)

6.4

Unit combinations

A complete, ready-to-use circulator always consists of a temperature control modul DC50, a bath vessel (B3, K15,

K20, W13, etc.) and a connecting element which attaches the temperature control module to or on the bath.

12

Unpacking / Setting Up

7.

Unpacking / Setting Up

7.1

Transportation damage?

•

Notify carrier (forwarding merchant, railroad) etc.

•

Compile a damage report.

Before return delivery:

•

Inform dealer or manufacturer

(Small problems can often be dealt with on the spot).

7.2

Ambient conditions according to DIN EN 61010

• indoors, max. 2000 meters above sea level,

• ambient temperature 5 ... 40 ° C,

• relative humidity max. 80%/31 ° C ( → 50%/40 ° C)

• excess voltage category II, contamination level 2

7.3

Resting time after transportation

(only for refrigerated circulators)

As we can unfortunately not guarantee that our refrigerated circulators are always transported according to our recommendations (i.e. upright), lubrication oil can leak from the compressor into the cooling circuit.

If the refrigerated circulator is started up whilst still in this state, the compressor may be damaged to the lack of oil.

Therefore:

!

Rest the unit for 24 hours after setting up.

26

7.4

Ventilation

Keep all ventilation grids 26 free from obstruction to ensure unhindered air circulation.

!

Blocked ventilation grids lead to increased unit heating which in turn reduces the cooling capacity and thus impairs correct functioning.

13

Information concerning the CE sign

7.5

Information concerning the CE sign

Thermo Haake measuring and control instruments carry the

CE sign which confirms that they are compatible with the EU guideline 89/336/EEC (electromagnetic compatibility). The tests are carried out according to module H (official sheet

L380 of the European Community) as our quality assurance system is certified according to DIN / ISO 9001.

It was tested according to the strict EMV test requirements of the EN61326-1/A1 (EMV requirements for electrical equipment for measuring technology, conduction technology and laboratory usage). This means it was tested for interference resistance and interference emission according to public low-voltage mains (household and commercial usage).

The following basic standards were applied in detail:

Interference resistance:

EN61000–4–2 electrostatic discharge

EN61000–4–3

EN61000–4–4 electromagnetic fields fast transients

EN61000–4–5

EN61000–4–6

EN61000–4–8

EN61000–4–11 surge voltages wire–guided HF–signals magnetic field of mains frequency voltage drop/short–time interruption

Interference emission:

CISPR16/class B wire–guided interference emission

CISPR16/class B radiated interference emission

EN 61000–3–2

EN 61000–3–3

Voltage variations and flickering

Over-compensation voltage flows

The application in industrial and commercial (public mains) environments is thus possible.

A declaration of conformity is supplied with the ordered unit on request.

Our strict standards regarding operating quality and the resulting considerable amount of time and money spent on development and testing reflect our commitment to guarantee the high level of quality of our products even under extreme electromagnetic conditions. Practice however also shows that even units which carry the CE sign such as monitors or analytical instruments can be affected if their manufacturers accept an interference (e.g. the flimmering of a monitor) as the minimum operating quality under electromagnetic compatibility conditions. For this reason we recommend you to observe a minimum distance of approx. 1 m from such units.

14

2

5

4

6

13

Functional and Operating Elements

8.

Functional and Operating Elements

8.1

Temperature control module DC50

15

7

17

8

3

A

16

12

11

14

1

10

A Symbol: Read the instruction manual!

1 Mains switch

2 Reset button

3 Menu selection key

4 Heating control display

5 Menu position display

6 Set or actual temperature display

7 Value alteration ( ↓ ) higher ( ↑ ) lower

8 Enter key

10 Pump outlet (depending on requirements, one of the opening must be closed).

11 Mains cable

12 Fuses (if this fuse is triggered, see chap. 13.4)

13 Excess temperature setting dial

14 Speed reduction switch for TRS system

15 RS232C or RS485-interface

16 Socket for cooling units

( K35, K40, K41, K50 and K75 ).

17 Socket for external Pt100 sensor

15


8.2

Bath vessel “W” and integral bath ”P”

(example model)

!

The working temperature must be limited to +100

°

C.

21

21a

22

23

P14

W13

21 Mounting screws for angled holder or bath bridge

21a Tapped holes for attaching the bath bridge

22 Handle

23 Drainage nozzle

16

24

44


B3

8.3

Bath vessel “B3” and integral bath ”P5”

!

The working temperature must be limited to +100

°

C.

25

46

44

24

46

P5

22

23

22 Handle

23 Drainage nozzle

24 Temperature control module with intermediate plate

25 Bath opening (with plastic bath covering as a standard feature)

44 Pump connections

(front = to external object)

(rear = return from external object)

46 Connections for tap water cooling

(The flow direction can be chosen arbitrarily.)

!

Depending on the equipment variant, the content of delivery does not always include 44 and 46 but these items can be retro-fitted.

17


28

Rear

22

8.4

Bath vessel V15 / V26

Front

27

23

V..

30 29

22 Handle

23 Drainage nozzle

27 Cooling unit mains switch

28 Mains socket for temperature control unit

29 Fuses (if this fuse is triggered, see chap.13.4)

30 Mains cable

18


44

24

Rear

8.5

Bath vessel K15 / K10 / K20

29 28 A

ACHTUNG

10 A max

!

30

24

44

25

22

K20

27

26

K15

23

25

23

27

A Symbol: Read the instruction manual!

22 Handle

23 Drainage nozzle

24 Temperature control module with intermediate plate

25 Bath opening (with plastic bath covering as a standard feature)

26 Ventilation grid (removeable, four mounting points: )

27 Cooling unit mains switch


29 Fuses (if this fuse is triggered, see chap.13.4)

30 Mains cable

44 Pump connections

(front = to external object)

(rear = return from external object)

19


8.6

Bath vessel K75

(example model K35, K40, K41, K50)

53

22

23

26

29

30

ÀÀÀÀÀÀÀÀ

ÀÀÀÀÀÀÀÀ

ÀÀÀÀÀÀÀÀ

ÀÀÀÀÀÀÀÀ

ÀÀÀÀÀÀÀÀ

ÀÀÀÀÀÀÀÀ

ÀÀÀÀÀÀÀÀ

28

K35, K40, K41, K50

29

30

53

28

22 Handle

23 Drainage nozzle

26 Ventilation grid (removeable, four mounting points: )


29 Fuses (if this fuse is triggered, see chap.

LEERER MERKER)

30 Mains cable

53 Control cable to socket 16 of the DC50

20

Assembly

9.

Assembly

The complete program is based on individual modular components which have all been separately tested to the highest standards. In order to guarantee a high degree of availability, the components are kept on stock as separate units by us, our dealers and representatives, and grouped together just prior to shipment to our customers according to their order.

These units are packed individually in order to ensure safety during transport. Therefore there are a few simple assembly steps left to be carried out by the customer.

You require:

1 screwdriver – size no. 2 (for Phillips screws)

As an immersion circulator with bracket mounting see page 23

As an open-bath circulator with angled mounting and bath vessel with stainless steel W13 – W46 see page 24

As an open-bath circulator with bath bridge H62 and bath vessel with stainless steel W13 – W46 or polyacrylic bath

W12P / W18P see page 25

21

Assembly

As an open-bath circulator with bath bridge H64 and integral bats P14 / P21 see page 26

As an open-bath circulator with bath bridge H66 or H67 and bath vessel V15 / V26 see page 27

As a combined open-bath and heating circulator with

bath bridge H63 and polyacrylic bath W5P see page 31

As a combined open-bath and heating circulator with

bath bridge and Integral bath P5/U see page 31/32

22

Assembly

35

10a

36

10

9.1

Immersion circulators with bracket mounting 4

1 Screw angled nozzle onto pump outlet 10 and hexagon plug screw onto pump outlet 10a on the side.

31

Attach bracket mounting for bath vessel 32:

2 Stand the temperature control module upside-down,

!

Dry unit first if necessary, in order to avoid exposing the electronics to water penetration.

3 Unscrew pair of screws 31 and remove spacers

4 Attach bracket mounting using these screws.

32

All containers which fulfill the following conditions can be used as the bath vessel:

• perpendicular walls,

• corrosion-resistant,

• minimum bath depth 150 mm (35),

• wall thickness max. 26 mm (36).

!

Polyacrylic and other plastic vessels are instable at higher temperatures, therefore:

•

Only use under supervision!

•

Set the excess temperature protection accordingly

(below 65

°

C for polyacrylic baths)!

•

The usage of a bath bridge is highly recommended in order to avoid a one-point load on the bath vessel!

Further on page 37 “Filling”.

An explanation on how to mount an optional

cooling coil can be found on page 29.

Afterwards further on page 33.

23

Assembly

10a 10

33

9.2

Open-bath circulators with angled mountings 4

1 Screw angled nozzle onto pump outlet 10 and hexagon plug screw onto pump outlet 10a on the side.

Attach angled mounting for bath vessel 33:


!


3 Unscrew pair of screws 31 and remove spacers,

4 Attach bracket mounting using these screws.

31

33

5 Attach the temperature control module to the rear side of the bath using the thumbwheel screws 21.

21





24

Assembly

40

42

38

37

41

34

9.3

Open-bath circulators with bath bridge and stainless steel or polyacrylic baths 4

Preparation:


!


2 Unscrew and remove pair of screws 31 and hexagon plug screw 41 (pump outlet on the side),

31

3

Mounting the plate:

Place the seal 34 onto plate 37 and slide the plate over the shaft.

4 Insert the screws 31 through the plate 37 and screw tight.

5 Screw angled nozzle 40 onto pump outlet and hexagon plug screw 41 onto pump outlet on the side.

21

6

Mounting the bridge onto the bath vessel:

Place the seal 42 under the plate 37.

7 Locate the plate with the attached temperature control module on top of the bath vessel and secure using the four sunken screws 38.

8 Attach the bridge to the bath vessel with the thumbwheel screws 21 (bridge overlaps; only tighten screws lightly).

9 Fit the supplied conical bung in the thermometer hole in the bridge.






lifting platform can be found on page 30.

25

40

42

Assembly

38

9.4

Open-bath cirulators with bath bridge H64 and bath vessel P14 and P21 4

37

41

Preparation:


!



34

31

3

Mounting the plate:




21

6



7 Locate the plate with the attached temperature control module on top of the bath vessel and secure using the four sunken screws 38.

8 Attach the bridge to the bath vessel with the four sunken screws 21.








26

40

L

Q

42

Assembly

9.5

Open-bath cirulators with bath bridge and bath vessel V15 and V26 4

37

41

34

Preparation:


!



31

3

Mounting the plate:




38

38

21

6



7 Locate the plate with the attached temperature control module on the bath bridge L (standard version) or Q

(special version) and secure using the four sunken screws 38.

8 Attach the bridge to the bath vessel with the thumbwheel screws 21.








27

Assembly

37 a

44 b c

38

9.6

Subsequently fitting a circulation set

1 Remove the temperature control module with plate from the bath bridge (unscrew the four sunken screws 38).


43

!


3 Unscrew angled nozzle 40 from pump outlet and hexagon plug screw 41 from pump outlet on the side,

4

5

6

Remove the covering plate from the marked openings

( ↓↓ ).

Insert hexagon plug screw 41 into a and nozzle 43 into pump outlet b on the side.

From below insert circulation set 44 into the plate ( ↓↓ ) and fix with sunken screw.

7 Insert tube 44a through plate and circulation set into nozzle 43 and fix it with setscrew c (the required allen key is supplied).

41

44 a

Mount the temperature control module with plate to the bath bridge.

28

37

Assembly

A

B

9.7

Subsequently fitting a cooling coil 4

Open-bath circulators with bracket mounting A or angled mounting B

1 Remove the hexagon nuts from the cooling coil.

2 Insert cooling coil from below through the bracket or angled mounting as illustrated.

The cooling coil now surrounds the shaft of the temperature control module.

3 Adjust the cooling coil (it should be equally spaced away from the shaft on all sides) and screw tight using hexagon nuts.

4 Attach the cooling coil with the bracket or angled mounting to the unit according to the instructions on pages 23 and 24.

Open-bath circulators with a plate on a bath bridge:

1

2

Remove the covering plate from the marked openings

( ↓↓ ).

Insert cooling coil from below into the plate 37 as illustrated.

The cooling coil now surrounds the shaft of the temperature control module.

3 Adjust the cooling coil (it should be equally spaced away from the shaft on all sides) and screw tight using using the screw which previously held the covering plate

29

50

Assembly

51

52

54

55

53

9.8

Fitting a lifting platform to the bridge 4

For fitting a lifting platform it is not necessary to remove the bath bridge with the fixed temperature control module.

1 Remove the closure pieces 50.

2 Unscrew nuts 54 from sleeves 51,

3 Insert sleeves 51 from above into the bath bridge and fix with nut 54 from below using a wrench,

4 Locate lifting platform 53 in the bath vessel.

5 From above insert handles 55 through the sleeves.

Screw the handles to the nuts of the lifting platform.

The height adjustment of the lifting platform is carried out via the thumbwheel screws 52.

30

Assembly

21

9.9

Open-bath and heating circulators with bath bridge and polyacrylic bath W5P 4

!

The highest working temperature must be limited to +60 ° C.

6


Attach the bridge to the bath vessel with the thumbwheel screws 21 (bridge overlaps; only tighten screws lightly).

7 Fit the supplied conical bungs in the thermometer holes in the bridge.

38

9.10

Open-bath and heating circulators with bath bridge and integral bath P5/U

!


1


Locate the plate with the attached temperature control module on top of the bath vessel and secure it using the four sunken screws 38.



Further on page 33 “Connecting Hoses”.

31

40

Assembly

37

41

34

9.11

Open-bath circulators with bath bridge and integral bath P5 4

!


Preparation:


!



31

3

Mounting the plate:




21

6


Locate the plate 37 with the attached temperature control module on top of the bath vessel, .and secure using the four sunken screws 21.








32

A

Connecting Hoses

!

!

10. Connecting Hoses

4

Pump nozzle A: front: outlet to external object (pressure side) rear: return flow from external object

Hoses are normally used to connect the pump with an external vessel. If objects are to be temperature controlled in the internal bath only, connect the pump nozzles A with a short hose with a min. length of 50 cm in order to achieve a better temperature constancy.

General recommendations concerning the max. allowable length of hoses cannot be given. It all depends largely on the size, form and material of the external vessel to be temperature controlled. It should be understood that the length of a hose and its diameter combined with the circulating capacity have a large effect on the temperature control effectiveness.

Whenever possible, the decision should be made in favor of the wider hose diameter and the vessel to be temperature controlled should be placed as close as possible to the circulator.

!

!

!

High operating temperatures will lead to high temperatures on the hose surface, this is even more so at the metal nozzles. In this case: DO NOT TOUCH!

The required hose material is dependent on the heat transfer liquid used.

Hoses must not be folded or bent!

A wide radius should be used if turns have to be made!

Hoses may become brittle after prolonged use or they may get very soft. They should, therefore, be checked regularly and exchanged if necessary!

Secure all hose connections using hose clamps!

33


A

B

C

A

A

10.1 Plastic hoses

It must be ensured that the hoses selected are fully suitable for the particular application, i.e. that they will not split, crack or become disengaged from their nozzles.

Perbunan hoses have proven their versatility in the temperature range between - 30 to + 100 ° C.

These hoses are available as running meter goods with internal diameters of 8 or 12 mm.

Order no.: 082-0172 for 8 mm i.D. hose

082-0173 for 12 mm i.D. hose

Hoses for other thermal liquids and temperature ranges can also be supplied by Thermo Haake:

Hose material: Remarks:

PVC

Viton

Silicone

Metal

Permissible

Temperature range:

10 to 60

°

C

– 60 to 200 ° C

– 30 to 220 ° C

– 50 to 300

°

C

For water only!

Not for silicone oil!

or Synth 60!

universally suitable

Hoses with 12 mm internal diameter can be pushed directly onto the nozzle A. For 8 mm hoses the content of delivery includes 2 hose adapters B with R 1/4 screw thread which must be screwed into nozzle A.

10.2 Metal hoses

Thermo Haake metal hoses (stainless steel insulated) offer a particularly high degree of safety and are suitable for both low and high temperatures.

The metal hoses are attached to the nozzles A using a coupling C (order no. 333-0302).

!

The hoses must not be extremely bent or subjected to mechanical strain!

These hoses are available in lengths of 0.5, 1.0 and 1.5 meters from Thermo Haake. Couplings for connecting two hoses are also available if other lengths should be required for a particular application.

The smallest opening inside the metal hoses is 10 mm. The metal hoses are provided with coupling nuts (M16 x 1, DIN

12 879, part 2) at either end. The counter piece for attaching them complies to the left hand sketch.

34


K

10.3 Tap water cooling

Only for units without own refrigeration unit!

1

10.3.1

Connection to cooling (tap) water

Using the cooling coil a lowest operating temperature approx. 3 ° C above the given cooling water temperature can be achieved.

Use hoses with 8 mm internal ∅ and connect to the cooling coil K. The direction of the flow can be freely selected. It must be taken care that at the outlet side, the water can run out unhindered.

Pressure fluctuations of the public water net may hamper the temperature constancy. For proper results the water pressure should be stable or measures should be taken to keep it stable.

The min. pressure should not be below 1 bar.

2 The amount of flow should be set to a min. value. At first the full flow should be used so that the unit can reach its operating temperature. Then, the amount of flow should be reduced using the water cock or a hose clamp. The actual temperature will rise above the set temperature if the water flow is insufficient. If so increase the water flow,

Heating / Open-bath circulator

External

Object

Flow-

Through

Cooler

10.4 External Cooling Devices

With immersion and flow-through coolers from Thermo

Haake, the heat transfer liquid can be cooled down considerably below 0 ° C and the circulator can be rendered independent of tap water.

A flow-through cooler should be used for the circulator and bath B3. The flow-through cooler is hooked up into the return flow line of the external vessel and from there to the circulator (see Fig.).

Immersion coolers have proven themselves especially suitable for open-bath circulators with angled brackets or the bath bridge H62.

The fitting opening is already provided in the bath bridge

H62.

The assembly and application are described in the instruction manual of the cooler in detail.

35

A


10.5 Pressure pump

10.5.1

Temperature controlling an object in the internal bath

Connect pressure and return nozzle A with a short hose.

Heating / Open-bath circulator

External

Object

10.5.2

Connection of external closed systems

E.g. instruments with a pressure-tight temperature jacket or coil or a heat exchanger.

Hose connection:

From the pressure port (at the front) to the external object and then back to the return port (at the rear).

If it cannot be avoided that the external object is situated higher than the circulator, the heat transfer will only not flow back on the condition that the system is completely tight and leak-free. To be on the safe side it may be considered necessary to fit stop cocks to the inlet and outlet hoses.

36

Filling

11. Filling with Bath Liquid

4

The selection of the proper bath liquid (heat transfer liquid) influences the capacity of a temperature control unit decisively. The technical data with special emphasis on the temperature accuracy was established in accordance with

DIN 58 966 (water at 70 ° C).

The temperature accuracy will decrease the higher viscosity of the heat transfer liquid and the lower its heating capacity is.

It is difficult to arrive at valid statements which can be applied as a general rule as the length of the hoses, the volume and the material of the connected systems have a great influence on this accuracy.

The heating up and the cooling down time of a system to be temperature controlled can be influenced by the bath liquid too. Oil, for instance, cuts this time in half when compared to water.

5 to 95

°

C

–30 to 80

°

C

11.1 Recommended bath liquids

Distilled Water

•

Normal tap water leads to calcareous deposits necessitating frequent unit decalcification.

!

Calcium tends to deposit itself on the heating element. The heating capacity is reduced and service life shortened!

•

Water, of course, can be employed up to 95 ° C, however above 80

°

C water vaporization reaches a level which necessitates the liquid to be constantly replenished.

Water with Antifreeze

In applications below 5 ° C the water has to be mixed with an antifreeze. In doing so, the amount of antifreeze added should cover a temperature range 5

°

C lower (but max.

–30 ° C) than the operating temperature of the particular application. This will prevent the water from gelling (freezing) in the area of the evaporating coil the surface area of which is much colder than the working temperature. An excess of antifreeze deteriorates the temperature accuracy due to its high viscosity.

37

Filling

–40 to 200

°

C

SIL180

… this heat transfer liquid is suitable for covering nearly the entire range with just one liquid especially when used with the cooling units.

Unfortunately SIL180 has a creeping tendency necessitating the occasional cleaning of the bath cover.

–75 to –10

°

C

Methanol or Ethanol

Those liquids are usually only used at lower temperatures.

Their fire point is at about 10

°

C. Therefore, they cannot be used in accordance with the standards EN 61010 or

DIN 12879.

other

Thermo Haake offers a range of heat transfer liquids for

temperatures

these temperature control applications.

Synth ... : Synthetic thermal liquid with a medium life span

(some months) and little smell annoyance.

SIL ... : Silicone oil with a very long life span ( > 1 year) and negligible smell.

Please get in contact with us should you have any questions.

We are glad to advise you and can help you to choose a heat transfer liquid suitable for your application

Thermo Haake heat transfer liquids are supplied with an EC

Safety Data Sheet.

! Important !

Thermo Haake takes no responsibility for damages caused by the selection of an unsuitable bath liquid.

Unsuitable bath liquids are liquids which e.g.

• are very highly viscous (much higher than 30 mPa ⋅ s at the respective working temperature)

• have corrosive characteristics or

• tend to cracking

! Important !

It is absolutely mandatory that the overtemperature cutoff point is set lower than the fire point for the heat transfer liquid selected (see chapter 15.1).

! Important !

The highest working temperature as defined by the EN

61010 (IEC 1010) must be limited to 25 ° C below the fire point of the bath liquid.

! Important !

Please ensure when selecting the heat transfer liquid that no toxic gases can be generated and bear in mind that inflammable gases can build up over the liquid during usage.

38

Filling

Range of Application

Fire point

Flash point

Viscosity

Density

Sil

100

Sil

180

Sil

300

Synth

20 *)

Synth

60

Synth

200

Synth

260

°C >100

>225 >325 no sp.

70 >235 275

°C

57 170 300 –3 59 227 260 at 20

°C [mPas]

3 11 200 <1 2 100 140 at 20

°C [kg/dm 3 ] 0,89 0,93 1,08 0,77 0,76 0,86 1,03

Specific heat capacity [kJ/kg*K] 1,67 1,51 1,56 no sp.

2,10 1,96 2,00

300

Temperature range

250

210

200

75

45

–28

Colour

Reacts with transparent, colourless transparent, colourless transparent, colourless transparent, colourless

Silicone Silicone Silicone Light– metals

Zinc transparent, colourless

Rubber

Silicone transparent, light– brown transparent, yellow

Copper

Lightmetals

Bronze

0226

0225

Copper

Lightmetals

Bronze no sp. = no specifications

39

2

Filling

11.2 Filling with heat transfer liquid

Filling level of the interior bath: max. up to 2.0 cm below the cover plate, min. up to 5.0 cm below the cover plate.

When working with water or water with antifreeze: or with oil below ambient temperature: the filling level should be 2 cm below the deck plate.

When working with oil above 80 ° C:

Keep level somewhat lower. Oil expands when being heated. Rule of thumb: 10% volume increase per 100 ° C heat increase.

External systems included within the circulating circuit have to be filled with the same heat transfer liquid in order to avoid too much liquid being drawn from the internal bath.

The bath level should be checked when the preset temperature has been reached!

Quite often closed external systems cannot be prefilled as suggested. In this case the internal bath of the unit has to be filled to the max. level. After starting the unit, the pump will feed the necessary liquid to the external system. Should the demand be higher than the volume difference between high and low, the low liquid level sensor will be activated and the pump switched off.

In this case:

1 Replenish the liquid,

2

3

Reset the unit:

Depress the key 2 (at the front).

⇒ The unit starts up again

Repeat this action if necessary.

40

Draining

23

12. Draining

The temp. control unit is drained at the nozzle 23.

1

2

Place a suitable vessel underneath nozzle.

Bear in mind that the liquid will run out in a slight arc.

Turn plug slowly until it becomes disengaged from the thread. A pin will prevent the liquid from running out right away.

3 Pull out plug (pin) in one quick motion. The liquid will start to run out.

4 Possible residues can be drained by tilting the circulator slightly.

!

Hot heat transfer liquid should not be drained!

When certain conditions make draining necessary, please act safety conscious: Wear protective clothing and protective gloves!

41

Connecting Up

11

12

230 V

115 V

16

29

K10, K15, K20, V15, V26:

28

29

K35, K40, K41, K50, K75:

28

30 53

30

13. Connecting Up

13.1 Connecting to the mains

Only attach this unit to mains sockets with a grounded earth.

Compare the local mains voltage with the specifications written on the name plate. Voltage deviations of +/- 10% are permissible. The socket must be rated as suitable for the total power consumption of the unit.

13.1.1 Only for refrigerated baths K15, K10, K20,

V15 and V26

1 Insert the mains plug 11 of the temperature control module into the socket 28 at the rear of the refrigerated bath.

2 Connect the refrigerated bath’s mains plug 30 to a grounded mains socket.

!

Socket 28 is live as soon as this connection has been made whether the refrigerated bath has been switched on at the mains switch or not!

13.1.2 Only for refrigerated baths K35, K40, K41,

K50 and K75

1

2

Insert the mains plug 11 of the temperature control module into the socket 28 at the rear of the refrigerated bath.

Connect the refrigerated bath’s mains plug 30 to a grounded mains socket.

3 Connect control cable 53 from the refrigerated bath to socket 16 of the temperature control module.

13.2 Checking the liquid circuit

Before switching on, check again to make sure that the pressure and suction ports are connected with each other – or alternatively if an external object is to be temperature controlled, that the hoses are connected correctly and secured

(see chapter 10.5)

42

Connecting Up

13.3 Changing the mains plug (e.g. for Great Britain)

!

This should only be carried out by qualified specialist personnel!

The mains cable wires have the following colors:

Brown

Blue

Green/Yellow =

=

=

Live

Neutral

Earth

13.4 Fuses on the unit

All units are equipped with automatic thermally-triggered fuses.

If the fuse (12/29) has triggered …

• the fuse does not have to be exchanged – resetting suffices;

• a white marking is visible;

• a certain cooling down time should be allowed (approx.

5 min) before the (dip) switch can be pressed again.

!

Do not use tools; do not use force. Both destroy the fuse.

!

If the fuse should be triggered again after resetting, the unit probably has a defect. In this case the unit should be sent in for servicing.

43

2

5

13

:

Operating

6

1

14. Operating

14.1 Switching on

!

Ensure that no forbidden working temperature has been selected, e.g.

max. 150 ° C for refrigerated baths K15, K20, V15, V26 max. 120 ° C for integral baths P5, P14, P21 max. 60 ° C for polyacrylic baths W5P, W12P, W18P

1 Set the excess temperature protection clearly above the desired operating temperature using the dial 13.

2 Switch the circulator on at the mains switch 1.

14

This causes:

⇒ The display 6 briefly shows the version number of the user software, e.g. 1.00 and then the actual tempera-

ture present at the location of the temperature control sensor.

If the display flashes 8888 , press the reset button 2

(autostart is disabled, see chapter 16.5 ).

⇒ The display 5 shows which one of the four adjustable set values is currently activated (set temperature ”S” or one of the fixed temperatures ”F1”,”F2”,”F2”

(see chapter 14.3).

⇒ The pump motor runs – the bath liquid is circulated.

⇒ The rotation speed of the pump motor can be changed with the switch 14.

full speed reduced speed

3 See chapter 16.10 for changing the user dialog language.

The refrigeration units V15, V26, K15 und K20 are switched on separately with the mains switch 21. Switch on the refrigeration unit only when cooling is actually required. The compressor starts with a slight jerk.

Only for DC50-K75:

!

If the DC50-K75 was already in operation before, please switch on the unit only after the refrigeration section has been switched off for at least 60 minutes. If switching on is attempted earlier, the compressor will try to start several times but without success. This could damage the compressor motor.

The second compressor of the K75 is always switched on automatically after a delay of 30 seconds. This delay is for protection of the compressor.

44

7

2

5

Operating

6

8

3

!

When the unit is started under unfavourable environmental conditions, the ”pressostat” safety feature may respond after about 1 minute. The display shows ” co ” (alarm cooling). If this happens, please

press the reset button 2. Usually the unit will then start correctly without going into fault status again. However, if fault status appears several times in succession, the unit is defective and must be sent in for servicing.

14.2 Adjusting the variable set temperature

1 Press the menu button 3:

⇒

Display 5 shows ” TEMP SET ”.

2 Increase ( ↑ ) or decrease ( ↓ ) the value shown in the display 6 with the buttons 7 . The first degree of temperature change is thereby passed slowly and thereafter the rate of temperature change in the display is five times faster.

3 Press the enter button 8.

⇒ The selected value is stored as new set temperature and activated.

The new value is not saved until the Enter button has been pressed. The circulator continues to use the old set value.

The display 6 automatically switches back to actual temperature display after a short time.

14.3 Adjusting the fixed temperatures F1 to F3

This device permits permanent storage of three fixed temperatures which can be activated when required.

1 Press the menu button 3 :

⇒ The small display 5 shows ”TEMP F1” ,”TEMP F2” or ”TEMP F3 ” .

2 Press the buttons 7 to increase ( ↑ ) or decrease ( ↓ ) the value shown in the display 6 .

3 Press the enter button 8 .

⇒ The selected value is stored as fixed temperature F1,

F2 or F3 and activated as currently valid set value.

45

4

7

5

17

Operating

6

8

3

The display 6 automatically switches back to actual temperature display after a short time. At the same time the small display 5 shows whether the temperature set point S, F1,

F2 or F3 is currently active.

To activate another set value, press the menu button 3 until the designator of the desired set point (e.g. ”TEMP SET ” ) is shown in the display 5. Then press the button 8 to confirm without changing the value.

14.4 Heating control lamp

The display 4 lights up when the heating is switched on (set temperature is higher than the actual temperature).

⇒ display 4 lights up constantly during the heating up phase,

⇒ display 4 flashes on and off during the control phase.

The display 4 does not light up if the heating is not activated

(set temperature is lower than the actual temperature).

14.5 Working with internal or external control sensors

The internal control sensor is an immovable fixture. Any commercially available Pt100 sensor equipped with 4-wire technology can be used as the external sensor. For connecting up see chapter 19.

The circulator must be switched off and on again after inserting an external sensor. The function ”EXT CTRL” is otherwise not selectable.

1 In the function menu change to ” con ” and press button 8. Using button 3 switch to ” EXT CTRL ”

(see chapter 16.6)

2 With the arrow buttons 7 switch external control on and confirm with button 8.

The control speed in EXTERNAL mode can be modified by entering the tolerated temperature difference ∆ T between the internal and the external bath in the menu dt (see chapter 16.14). ∆ T defines the amount by which the temperature in the thermostat bath is permitted to lead in time with respect to the temperature in the external system.

The unit is preset to a tempearature deviation of 20 ° C. Overswinging is thus avoided for the most part. The time until the desired temperature has been reached can however be quite long. If you would like to shorten this, select a higher ∆ T value (in the range 0 – 90).

46

Operating

.

When using high values you should reckon with quicker control speed but strong overswinging.

Medium values result in moderate overswinging and medium control speeds. The level of overswinging is dependent on a number of factors such as the volume of the external system. the heat transfer liquid used, hose length, the working temperature and many others. No general statements can thus be made at this point.

Switch–off the external control function and switch ”SENS

EXT” to ON in the menu ” con ” (see chapter 16.7 ) if the external sensor is to be used for measuring the actual temperature in the external bath, instead of as control loop sensor.

1 To display the temperature in the external bath (see chapter 16.2 ), select ”SENS.EXT” in the menu

”SEnS” .

14.6 Working with or without cooling(not for K15, K20)

The refrigeration units K35, K40, K41, K50 and K75 are included in the safety circuit of the thermostat via the socket connector 16 .

You should decide if the usage of the cooling aggregate (if fitted) is necessary depending on the desired set temperature.

1 Select ” COOLING” in the menu ” con ” (see chapter

16.8).

Switch the refrigeration machine ON or OFF

If you have chosen ”COOLING” (Refrigeration ON) the control loop will regulate the refrigeration. After briefly switching

OFF and ON again, the refrigeration machine of the K35 will start to run again only after a delay of 6 minutes.

The refrigeration machine will not switch–on if the set–point is made greater than 100 ° C. However, for special applications, e.g. when an exothermic reaction is expected, it may be desirable to let the refrigeration machine run when the set–point temperature is high (only partial refrigeration power is then available, i.e. 30% of the maximum rating).

2 Select ”COOL–HT” (Refrigeration high temperature) in the menu ”con” (see chaper16.9). Switch to ON if the refrigeration machine is required to run. The factory setting is OFF.

47

7

2

13

Excess Temperature Protection

6

15. Excess Temperature Protection

If one of the safety devices is triggered:

•

The fault cause is shown in the display 6

(see also chapter 17.)

•

An acoustic signal is sounded.

• all voltage conducting unit components (the heating element and pump motor) are switched off immediately i.e. the safety circuit transfers the unit to a stable, safe condition.

The fault cause must be identified and remedied.

After the fault has been eliminated the unit can be started again by pressing the Reset key 2.

13

15.1

Excess temperature protection dial

It offers protection against dangers caused by an uncontrolled heating up of the heat transfer liquid above the desired set temperature.

The cut-off temperature is adjusted with the excess temperature setting dial 13.

Proper protection can only be guaranteed if the cut-off point has been correctly set.

There are two main aims for correct setting:

•

Safety (primary importance):

Protection against ignition of the heat transfer liquid.

The cut-off point must be set at least 25 ° C below the fire point of the bath liquid used.

•

Protection of the object to be temperature controlled (secondary importance):

Additional protection, e.g. of a biological sample. The cut-off point should be set as close as possible to the desired temperature value.

48

Excess Temperature Protection

13

15.1.1 Setting the excess temperature

The cut-off point is set with the excess temperature dial 13 with a rough scale of temperature values arranged around it. This scale, of course, can only serve as an approximate setting means for this cut-off point. However, the cut-off point can be determined to act exactly if the following procedure is adhered to:

If for instance a bath liquid has a fire point of 60 ° C the unit should cut off after reaching 35 ° C at the latest:

1 First set the desired set value “ TEMP SET ” using keys

7 ( ↑ ) or ( ↓ ) to exactly 35 ° C.

2 After the circulator has reached this temperature, turn the excess temperature dial 13 backwards very slowly

(to the left) until the unit cuts off (acoustic signal, fault message on display 6).

3 Reset the unit via the Reset key 2 after the heat transfer liquid has cooled down somewhat.

4 Then set the set temperature to the actual temperature

(< 35 ° C).

⇒

The unit can now be used for temperatures below

35 ° C. As soon as 35 ° C is reached, it is securely switched off.

15.1.2 Testing the cut-off point

Set the set temperature to a higher value than 35 ° C, set the unit to heat up and watch the digital display or thermometer.

The value indicated when the alarm goes off is the real cutoff temperature. The reaching of the cut-off point is indicated at the display by the following message:

49

Configuration

7

5

16. Configuration

The device is completely ready for operation after defining the desired set temperature and adjusting the overtemperature protection. It is furthermore possible to adjust or call-up several functions in the function mode.

FUNCTION

END

Quit configu– ration mode

SEt

Adjust SET values S and

F1 to F3

SEnS

Temperature at the interal/ external sensor rtA

Adjust correction factors cS and c1 to c3 con H–L

Version No.

temperature resolution, etc.

High and low temperature limits

dt

Temperature difference internal/external

I–O

Adjust interface parameters

6

8

3

1 Switch to function mode by pressing the menu button

3 several times (until display 5 shows ” FUNCTION ” ).

2 Switch to the desired function SEt, SEns,RTA, CON,

H–L, dt or I–O with the arrow buttons 7. Press the enter button 8 to confirm the selection made.

3 Move around through the submenus with the menu button 3 (see chapter ”1.3 Menu Tree”).

4 A further press of the menu button 3 quits function mode and returns to display of the actual temperature.

Display 6 always returns automatically to actual temperature display after a short time.

END is provided to skip function mode without making any settings.

16.1 Set value SET and fixed temperatures F1 to F3

The adjustment has already been made in chap. 14.2 and

14.3. In the function mode it is also possible to adjust and change these set values without activating them.

1 Press the arrow buttons 7 in the menu FU to change to the SEt function. Press the enter button 8 to confirm this selection.

2 Press the menu button 3 to move through the submenus TEMP SET, TEMP F1 to TEMP F3 (the procedure for making adjustments is the same as in chapter 14.2.

A correcting factor RTA should be associated with each value: TEMP SET

⇔

RTA SET , TEMP F1

⇔

RTA F1 ...

(see chapter 16.3).

50

.

.

Configuration

16.2 Reading the temperature at the internal/external sensor

1 Switch to SEnS in the function menu and then press key 8 . Switch to ”SENS INT” or ”SENS EXT” with key 3 and confirm with the enter key 8 .

⇒ The display 6 shows the temperature at the location of the selected sensor.

”SENS.INT” can be selected only when external control is switched–on.

”SENS.EXT” can be selected only when external control is switched–off and the external sensor is switched–on

( ”SENS EXT” = ON in the menu ”con” ).

16.3 Adjusting the correction factors (RTA-system)

Display 6 shows the actual temperature at the control sensor.

This temperature does not correspond directly to the temperature in the circulator’s bath and even less to the temperature in the external connected system. The temperature difference is determined by measuring the actual current temperature using a suitable measuring device (calibrated or gauged thermometer).This is how the correcting factor (RTA system) is entered into the circulator. It remains stored in the circulator and is automatically assigned to the corresponding temperature set point.

The same as for the set points in chap. 14.3, four correcting factors can be stored: RTA SET ,RTA F1,RTA F2 and

RTA F3 .

The resolution of the correcting factor according to the RTA system is 0.01

° C and the possible range of variation is ± 9.9

° C.

Entry (see also the example on the next page):

1 Switch to the RTA function with the arrow buttons 7 in the menu FU. Press the enter button 8 to confirm this selection.

2 Press the menu button 3:

⇒ The small display 5 shows RTA SET (correction factor for working with the set temperature SET ).

3 Set the determined temperature difference on the display 6 with the buttons 7.

4 Press the enter button 8.

⇒ This confirms the value as new correction factor RTA

SET .

Proceed analogously as described for RTA SET to adjust the correction factors RTA F1 to RTA F3 for the set values

TEMP F1 to TEMP F3.

51

Configuration

The new value is not saved until the Enter button has been pressed. The circulator continues to use the old value.

Warning: The correction factor ”RTA” may have to be determined again if the set temperature is altered!

The display 6 automatically switches back to actual temperature display after a short time.

After the Enter button 8 has been depressed, the correction value RTA SET (like the set value) remains stored even in case of a power failure.

Example:

RTA

SET

Set value programmed at the circulator

Actual temperature in bath / system

T set

T act

= 70.7

°

C

= 70.5

° C

⇒

Deviation, calculated according to

∆ T = T set

– T act

∆ T = 0.2

° C

⇒ Entry of the corrected value ∆ T as correction factor “RTA SET ” RTA SET = +0.2

° C

The temperature control is thus internally altered so that the desired 70.7

°

C is also attained in the external system. The temperature displayed at the circulator and that of the external system now correspond with each other.

52

.

Configuration

16.4 Displaying the version of the operating software

It is often necessary to know the version number of the software for service and other manufacturer inquiries.

1 Change to ”con” in the menu FUNCTION and press button 8 to confirm. Press button 3 to switch to

”DC50” .

The version number appears in the upper display 6 .

16.5 Autostart

1 Change to ”con ” in the menu FUNCTION and press button 8 to confirm. Press button 3 to switch to ”88”.

2 Switch autostart ”ON” or ”OFF” with the arrow buttons

7 and press button 8 to confirm.

Autostart off :

The temperature control module switches to the secured mode in case of a power failure or if it is switched on via the mains switch. Display 6 flashes over all segments .

Switching on again is only possible after the reset button 2 has been pressed. This is due to safety reasons.

The unit reacts in the same way if is switched on via a mains switch in the laboratory.

Autostart on :

After a power failure or if it is switched on via the mains switch the temperature control module will switch on and start heating corresponding to the stored values and the last temperature used.

!

Please consider any possible resulting risks!

16.6 Switching–on external control

1 Change to ”con” in the function menu and then press key 8 . Switch to ”EXT CTRL” with key 3 .

2 Switch external control ON or OFF with the arrow keys

7 and confirm with key 8 .

16.7 External sensor (only with external control = OFF)

1 Change to ”con” in the function menu and then press key 8 . Switch to ”SENS EXT” with key 3 .

2 Switch the external sensor ON or OFF with the arrow keys 7 and then press key 8 to confirm.

53

Configuration

.

.

16.8 Refrigeration control

This menu option appears only when using the refrigeration units K35, K40, K41, K50 and K75.

1 Change to ”con” in the function menu and then press key 8. Switch to ”COOLING” (Refrigeration) with key 3.

2 Switch the refrigeration control ON or OFF with the arrow keys 7 and press key 8 to confirm.

16.9 Refrigeration HT

(refrigeration control in the range above 100

°

C)

This menu option appears only when using the refrigeration units K35, K40, K41, K50 and K75.

1 Change to ”con” in the function menu and then press key 8 . Switch to ”COOL HT” with key 3 .

2 Switch ”COOL HT” (Refrigeration high temperature)

ON or OFF with the arrow keys 7 and then press key

8 to confirm.

16.10 Dialog language

1 Change to ”con” in the function menu and then press key 8 . Switch to ”LANGUAGE” with key 3 .

2 Select the desired dialog language with the arrow keys

7 and then press key 8 to confirm.

16.11 Adjusting the LED display contrast

1 Change to ”con” in the menu FUNCTION and press button 8 to confirm.

Switch to ”CONTRAST” with button 3.

2 Press the arrow buttons 7 to change the display contrast (0 to 15) and then press button 8 to confirm the setting.

16.12 Resolution of the temperature display

1 Change to ” con ” in the menu FUNCTION and press button 8 to confirm. Switch to ” DISPLAY ” with button 3.

2 Choose the resolution (0.1 or 0.01

°

C) with the buttons 7 and then press the button 8 to confirm (0.01

°

C resolution is available only in the display range from

–9.5 to +99.5 ° C).

54

Configuration

16.13 Adjusting temperature limit values

The setting range of the operating temperature of the circulator can be limited if the application or the fire point of the selected heat transfer liquid requires this.

!

This is not a safety element but merely an aid to help avoid user faults when operating the unit. The excess temperature protection must be set separately.

1 Change to the function H–L with the arrow buttons 7 in the menu FUNCTION. Then press the enter button

8 to confirm the selection.

2 Press the menu button 3 :

⇒ The small display 5 shows ” L-LIMIT ” (Low Limit temperature value).

3 Set the desired limit value with the arrow keys 7 (the lowest possible temperature is –50 ° C, for refrigeration units K40, K41: –40 ° C, for DC50-K75: –80 ° C).

4 Press the enter button 8 .

⇒ The chosen value is stored as lower limit value

” L-LIMIT ”.

To set the high limit value H-LIMIT, proceed analogously as described for L-LIMIT.

H-LIMIT (High Limit): The highest possible temperature is

200 ° C. For K40, K41: 150 ° C, for K75: 100 ° C.

!

The DC50 is set to a highest temperature ”H-LIMIT” of 150

°

C in the factory (for DC50-K75: 100

°

C)

The value must not be altered if the compressor cooled units K15, K20 or V are used!

Higher temperatures can damage the compressor cooling circuit and the bath insulation.

!

When using the baths P5, P14, P21 it is recommended to adjust the ”H-LIMIT” value to max. 120 ° C and for the baths W5P, W12P, W18P to max. 60 ° C.

The new value is not saved until the Enter key has been pressed. The circulator continues to use the old value.

55

Configuration

16.14 Temperature difference ”dt” between internal and external bath vessel

The control speed in EXTERNAL mode can be modified by entering the tolerated temperature difference ∆ T between the internal and the external bath in the menu dt . ∆ T defines the amount by which the temperature in the thermostat bath is permitted to lead in time with respect to the temperature in the external system.

The unit is preset to a tempearature deviation of 20 ° C. Overswinging is thus avoided for the most part. The time until the desired temperature has been reached can however be quite long. If you would like to shorten this, select a higher ∆ T value (in the range 0 – 90).

When using high values you should reckon with quicker control speed but strong overswinging.

Medium values result in moderate overswinging and medium control speeds. The level of overswinging is dependent on a number of factors such as the volume of the external system. the heat transfer liquid used, hose length, the working temperature and many others. No general statements can thus be made at this point.

As for the set values in capter14.3, four temperature difference values ∆ T can be stored in memory: ” DELTA S” and

” DELTA F1” to ” DELTA F3” .

1 In the function menu change to the function dt with the arrow keys 7 . Then press the enter key 8 to confirm your selection.

2 Press the menu key 3 :

⇒ the small display 5 shows ”DELTA S” (the temperature difference when operating with set value SET ).

3 Press the key 7 to set the desired temperature difference as shown in the display 6 .

4 Press key 8 (Enter).

⇒ This confirms the chosen value as the new temperature difference ”DELTA S” .

Proceed as described for DELTA S to make the settings for

DELTA F1 to DELTA F3.

The new value is not saved to memory if you do not press the enter key to confirm it. The thermostat continues to operate with the old value.

56

Configuration

16.15 Setting the interface parametersr

1 Change to ”I–O” in the function menu and then press key 8 . Switch to ” COMPUTER ” with key 3 .The interface type RS232 or RS485 appears in the upper display 6

16.16 Baud rate

1 Change to ”I–O” in the function menu and then press key 8 . Switch to ” BAUDRATE ” with key 3 .

2 Set the desired baud rate with the arrow keys 7 (600 to 9600 baud, 4800 baud recommended) and press button 8 to confirm.

16.17 Parity

1 Change to ”I–O” in the function menu and then press key 8 . Switch to ” PARITY ” with key 3 .

2 Set the desired parity (OFF, odd or E) with the arrow keys 7 and press button 8 to confirm.

16.18 ”Handshake”

1 Change to ”I–O” in the function menu and then press key 8 . Switch to ” HANDSHAKE ” with key 3 .

2 Set the desired handshake parameter with the arrow keys 7 (on = with RTS/CTS, OFF = without RTS/CTS) and press button 8 to confirm.

The new value will not be saved to memory if you do not press the Enter key. The thermostat will then continue to operate with the old parameter values.

3 Press the menu key 3 again to quit the function level and return to display of the actual temperature. Or just wait until the display 5 and 6 returns to actual temperature indication automatically after a short time.

57

Configuration

16.19 Only for RS485: Setting the device address

1 Change to ”I–O” in the function menu and then press key 8 . Switch to ”HS” with key 3 .

2 Set the device address (0 – 99; preset value is 1) with the arrow keys 7 and then press key 8 to confirm the setting.

This device address is required for commanding via the

RS485 interface (see capter 20.5).

The new value will not be saved to memory if you do not press the Enter key. The thermostat will then continue to operate with the old parameter values.

3 Press the menu key 3 again to quit the function level and return to display of the actual temperature. Or just wait until the display 5 and 6 returns to actual temperature indication automatically after a short time.

58

2

5

Fault Displays

6

17. Fault Displays

An acoustic signal is sounded and ” XXXX ” is shown on display 6 and display 5 (see below).

The heating element and pump are completely switched off.

The following faults are possible:

= Excess temperature

= Low liquid level

= Pump or motor overloading

= Sensor breakage or short circuit internal

= Sensor breakage or short circuit external

= Refrigeration unit fault

= External fault RS232C or RS485

= Undefined fault

17.1 Excess temperature

The low liquid level protection can be triggered if:

•

Excess temperature has been set too closely to the desired working temperature

⇒ increase value slightly according to specifications made in chapter 15.1.1.

• the control function is defective

⇒ Return unit for servicing.

17.2 Low liquid level

The low liquid level protection can be triggered if:

• there is not enough liquid in the bath

⇒ check for leaks, top up if necessary,

⇒ fluid has evaporated, top up if necessary.

59

.

.


17.3 Pump or motor overloading

The motor or pump is blocked:

⇒ It can take 10 min or longer, until the motor temperature has sunk far enough so that the unit can be switched on again by pressing the reset key 2. If the circulator switches off again after a short time, return the unit for servicing!

17.4 Sensor breakage or short circuit internal

The sensor must be exchanged by qualified service personnel. Please return unit for repairs.

17.5 Sensor breakage or short circuit external

The sensor must be exchanged by qualified service personnel. Please return unit for repairs.

17.6 Refrigeration unit fault

The ”pressostat” safety feature is triggered. The display shows ” co ” (alarm cooling). If this happens, please press the reset button 2. Usually the unit will then start correctly without going into fault status again.

However, if fault status appears several times in succession, the unit is defective and must be sent in for servicing.

17.7 External fault RS232C or RS485

(depending on the unit type)

The circulator has been switched to fault status via the interface.

⇒ Check the external system.

60


17.8 Undefined fault

This can be caused by fault which only occurs for a short period of time, i.e. with a fluctuating bath level when the filling level is very close to minimum.

Before returning the unit, top up with heat transfer liquid. This fault can often be remedied in this way!

In all other cases this unit must be checked by qualified service personnel.

17.9 Fault eliminated?

After the fault has been eliminated, the cause of the fault is shown on the display 6 (e.g. ). The preceding three zeros mean that the fault has been eliminated

The reset key 2 must be pressed in order to start up the unit again.

61

Testing the Safety Features

18. Testing the Safety Features

The safety features for excess temperature protection and low liquid level protection must be checked at regular intervals. The level of regularity of checking depends on the unit’s designated application and the heat transfer liquid used (inflammable or non-inflammable). Practical experience has shown that between 6 to 12 times a year is sufficient.

18.1 Excess temperature protection

Set a cut-off temperature (see chapter 15.1) that is lower than the desired set temperature. Switch on the circulator and check if the circulator really does switch itself off at the set cut-off temperature

If not follow the specifications detailed in chapter 15.1.1.

It may be deemed necessary to have the unit checked over by qualified service personnel.

18.2 Low liquid level protection

Drain the heat transfer liquid slowly during operation (use a drainage tap if necessary) and check if the unit really does switch itself off.

If not the unit must be checked over by qualified service personnel.

62

External Connections

6

3

1

Attach shielding plane

2 3

1 4

7

4

2

5

8

19. External Connections

19.1 Shielded Cables

!

In order to keep the electromagnetic noise in the instrument within the tolerable limits it is indispensable to use only shielded cables and high quality plug connections.

The complete contact of the shielding within the plugs is of special importance. Insufficient contact may lead to noise penetration and result in performance errors.

19.2 External Pt100 sensor

A sensor in four wire technology is necessary.

Only sensors with shielded wires can be used to fulfill the EMC requirements. The shielding must be connected with the housing of the plug and the sensor shaft.

This sensor has to be connected according to the wiring diagram.

Pin assignment:

Pin 1 = current I +

Pin 2 = voltage U +

Pin 3 = voltage U –

Pin 4 = current I –

The circulator must be switched off and on again after inserting an external sensor. The function EXTERNAL is otherwise not selectable. The unit switches automatically back to the function INTERNAL.

(A suitable plug is available with order no. 799-1006).

19.3 Socket for refrigerated unit

Pin 1= Relay safety circuit

Pin 2= SSR solenoid valve for cooling

Pin 3= SSR compressor

Pin 4= Pressostat switch

Pin 5= Code refrigerated unit

Pin 6= Code refrigerated unit

Pin 7= Pressostat switch

Pin 8= GND

The circulator must be switched off and on again after inserting the plug. The function COOLING is otherwise not selectable.

19.4 Interface RS232C and RS485 see chapter 20.

63

Serial Interface

20. Interface RS232C or RS485

(depending on the unit version)

The following circulator functions can be controlled by a computer via the interfaces:

•

Setting of the set values ”SET S, SET F1 – SET F3”, the correction factors ”RTA S, RTA F1 – RTA F3” and the temperature deviation ”dT” is possible;

• the actual temperature can be read off;

• the circulator can be reset, started or stopped;

• any fault messages can also be displayed.

The RS232C interface uses separate lines for sending and receiving data whereas data transfer is carried out bi-directionally with the RS485 interface whereby the directional assignment is given via the software by switching. This switching is carried out automatically at the circulator whereby the data directional assignment for the interface board must be set by the user at the PC.

20.1 Connecting to a computer

20.1.1 PC with an RS232C interface

The pin assignment required when connecting the circulator to a computer via a 9-pin socket is as follows:

9 pin socket

TxD

RxD

RTS

CTS

3

2

7

8

DSR

5

6

Computer

Cable (9Ćpin to 9Ćpin)

5

6

3

2

7

8

5

6

3

2

7

8

9 pin socket

3

2

7

8

RxD(Received Data)

TxD(Transmitted Data)

CTS(Clear to Send)

RTS(Request to Send)

5

6

Signal ground

DTR

Circulator

64


9 pin socket sent received data

A (+)

5

B (-)

4


25 pin socket Cable (25 pin to 9 pin) 9 pin socket

TxD

RxD

RTS

CTS

4

5

2

3

DSR

7

6

7

6

4

5

2

3

5

6

7

8

3

2

3

2

7

8

RxD(Received Data)

TxD(Transmitted Data)

CTS(Clear to Send)

RTS(Request to Send)

5

6

Signal ground

DTR

Circulator

Computer

20.1.2 PC with an RS485 interface


5

4

5

4

5

4

A (+) sent received data

B (-)

Signal ground

3 3 3 3

Signal ground

Computer Circulator

Bus lines

(3 pin with shielding) to further units

A (+) B (-)

Check the connection assignments of the PC interface board with the diagram above before starting up!

65


20.2 Interface parameter

Interface parameters can be set via the circulator as follows:

Baud rate (600, 1200, 2400, 4800, 9600)

Parity (OFF= without parity

( odd = odd

( E = even)

Handshake (OFF= without RTS/CTS

( on = with RTS/CTS)

All these transfer parameters cannot be altered via the interface.

Default is 8 (Data) bits.

Maximum baud rate

Recommendation for the maximum baudrate: 4800 bauds

The communication between the computer and the circulator should not take place at a baud rate higher than 4800.

Occasional transfer failures ca occur at a baud rate of 9600.

20.3 Requirements made of external units

Only units which have been tested according to EN 60 950

(=IEC 950) should be connected to the interface of the circulator.

20.4 Storing of desired values

If the desired value is set via the computer ...

• the set values ”SET S, SET F1 – SET F3”

• the correction factors ”RTA S, RTA F1 – RTA F3”

• the temperature deviation values ”dT”

... are stored permanently, even if the mains supply current of the DC50 is switched off or the interface connection is interrupted.

66


20.5 Commands

For interface RS485: The string ’ADR<unit address>’ must precede every command in case of programming. The unit adress is set according to chapter 16.19.

cr : carriage return

<value> : any value with positive or negative sign, comma can be omitted with whole numbers (e.g. 12 = 12.0 = 12.00 = 12.000)

DC50command

’W ST’,cr

’W GO’,cr

’R V’,cr

’R VE’,cr

’W RS’,cr

’R B’,cr

’R BS’,cr

’R S’,cr

’R SW’,cr

’W SW<Wert>’,cr

’R I’,cr

’R T1’,cr

’R T3’,cr

’W AL’,cr

’W ER’,cr

’W EG’,cr

’W ER’,cr

’W EG’,cr

’W NS 1’,cr

’W NS 2’,cr

’W L’,cr

’W U’,cr

’R HL’,cr

’R LL’,cr

’I’,cr

’T1’,cr

’T3’,cr

’AL’,cr

’ER’,cr

’EG’,cr

’ER’,cr

’EG’,cr

NS 1,cr

NS 2,cr

’L’,cr

’U’,cr

’HL’,cr

’LL’,cr

Alternative command

’ST’,cr

’GO’,cr

’V’,cr

’VE’,cr

’RS’,cr

’B’,cr

’BS’,cr

’S’,cr

’SW’,cr

Answer

$<cr><lf>

$<cr><lf>

Stop control

Start control

DC50:1.00-04/97$<cr><lf> VERSION DC50

DC50:1.00-04/97$<cr><lf>

$<cr><lf> RESET-Command

BS00101000000$<cr><lf> read operating status

BS00101000000$<cr><lf>

S0+0023.50$<cr><lf>

S1–0012.50$<cr><lf>

S2+0023.50$<cr><lf>

S3–0012.50$<cr><lf>

$<cr><lf> read active set value (set value S selected) read active set value (fixed temp.1 select.) read active set value (fixed temp.2 select.) read active set value (fixed temp.3 select.) modify active set value ( not stored !)

T1+0023.50$<cr><lf>

T1+0023.50$<cr><lf>

T3+0023.50$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

!<cr><lf>

!<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

HL+0150.00$<cr><lf>

LL– 0030.00$<cr><lf> read internal sensor read external sensor

Alarm triggering unlocking executed

Alarm source or just unlocked

1 decimal place at actual temp. display

2 decimal places at actual temp. display blocking the ENTER key releasing the ENTER key read high limit read low limit

67


DC50command

’W EX’,cr

’W IN’,cr

’R ZR’,cr

’R ZR’,cr

’R IS’,cr

’R I1’,cr

’R I2’,cr

’R I3’,cr

’R ES’,cr

’R E1’,cr

’R E2’,cr

’R E3’,cr


’EX’,cr

’IN’,cr

’ZR’

’ZR’

’IS’,cr

’I1’,cr

’I2’,cr

’I3’,cr

’ES’,cr

’E1’,cr

’E2’,cr

’E3’,cr

’W IS <value>’,cr

’W I1 <value>’,cr



’W ES <value>’,cr ’ES xxxx’,cr

’W E1 <value>’,cr ’E1 xxxx’,cr



’R S0’,cr

’R S1’,cr

’R S2’,cr

’R S3’,cr

’W S0 <value>’,cr




’S0’,cr

’S1’,cr

’S2’,cr

’S3’,cr

’R DS’,cr

’R D1’,cr

’DS’,cr

’D1’,cr

’R D2’,cr

’R D3’,cr

’D2’,cr

’D3’,cr

’W DS <value>’,cr ’D0 xxxx’,cr

’W D1 <value>’,cr ’D1 xxxx’,cr



Answer

$<cr><lf>

$<cr><lf>

ZR0$<cr><lf>

ZR1$<cr><lf>

IS+00.30$<cr><lf>

I1+00.30$<cr><lf>

I2+00.30$<cr><lf>

I3+00.30$<cr><lf>

ES+00.30$<cr><lf>

E1+00.30$<cr><lf>

E2+00.30$<cr><lf>

E3+00.30$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

S0+0020.30$<cr><lf>

S1+0070.00$<cr><lf>

S2–0010.00$<cr><lf>

S3+0040.00$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

DS+20.00$<cr><lf>

D1+20.00$<cr><lf>

D2+20.00$<cr><lf>

D3+20.00$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf>

$<cr><lf> set external control set internal control read control mode (internal) read control mode (external) read RTA S internal for set value S read RTA F1 internal for fixed temp.1

read RTA F2 internal for fixed temp.2

read RTA F3 internal for fixed temp.3

read RTA external cS for set value S read RTA F1 external for fixed temp.1

read RTA F2 external for fixed temp.2

read RTA F3 external for fixed temp.3

change RTA S internal for set value S change RTA F1 internal for fixed temp.1

change RTA F2 internal for fixed temp.2

change RTA F3 internal for fixed temp.3

change RTA S external for set value S change RTA F1 external for fixed temp.1

change RTA F2 external for fixed temp.2

change RTA F3 external for fixed temp.3

read set value S read fixed temperature 1 read fixed temperature 2 read fixed temperature 3 change set value S with storing change fixed temperature 1 with storing change fixed temperature 2 with storing change fixed temperature 3 with storing read dT for set value S read dT for fixed temperature 1 read dT for fixed temperature 2 read dT for fixed temperature 3 change dT for set value S change dT for fixed temperature 1 change dT for fixed temperature 2 change dT for fixed temperature 3

68


DC50command

’R GT’,cr


GT,cr

Answer

GT00$<cr><lf>

’R GK’,cr

’W KG 0’,cr

’W KG 1’,cr

’R KG’,cr

’R KG’,cr

’W KH 0’,cr

’W KH 1’,cr

’R KH’,cr

’R KH’,cr

’W ZA 0’,cr

’W ZA 1’,cr

’R ZA’,cr

’R ZA’,cr

GK,cr

’KG’,cr

’KG’,cr

’KH’,cr

’KH’,cr

’ZA’,cr

’ZA’,cr

GK00$<cr><lf>

$<cr><lf>

$<cr><lf>

KG0$<cr><lf>

KG1$<cr><lf>

$<cr><lf>

$<cr><lf>

KH0$<cr><lf>

KH1$<cr><lf>

$<cr><lf>

$<cr><lf>

ZA0$<cr><lf>

ZA1$<cr><lf>

The circulator responds a ”!” on incorrect input.

read type of cooling unit

03: no cooling

00: K40/K41

01: K35/K50

02: K75 read type of temperature control module

02: DC50 cooling OFF cooling ON read cooling status (OFF) read cooling status (ON) switch cooling at SET >100 ° C OFF switch cooling at SET >100 ° C ON read cooling status at SET >100 ° C (OFF) read cooling status at SET >100 ° C (ON) switch Autostart OFF switch Autostart ON read Autostart status (OFF) read Autostart status (ON)

69


R_BS<cr>

20.6 Operating status / Error message

Call up operating status:

After entering one of these commands, the following twelve

”state flags” are shown:

” x x x x x x x x x x x x $ ”

1 : Alarm external Pt100

0 : External Pt100 OK

1 : Alarm internal Pt100

0 : Internal Pt100 OK

Reserved

Reserved

1 : Alarm cooling

0 : Cooling OK

1 : Alarm via external connection

0 : External connection OK

1 : Alarm motor or pump overloading

0 : Motor and pump OK

1 : Alarm liquid level

0 : Liquid level OK

1 : Alarm overtemperature

0 : Temperature OK

1 : Main relay missing

0 : Main relay present

1 : External control

0 : Internal control

1 : Temperature control ON

0 : Temperature control OFF

70


20.7 Controlling via a BASIC program

The range of commands stored in the unit can be activated by this simple program:

REM command procedure

REM enter 1st command

REM 2nd command is passed on to the unit

CLOSE

OPEN ”COM2:4800,N,8,1,CS0,DS0,CD0” AS #1 loop: b$ = ” ”

INPUT ”command: ”;b$ if b$ = ”X” then markend if b$ = ”x” then markend repeat command:

PRINT #1,b$

PRINT

PRINT ”return message”

PRINT ”– – – – – – – –”

GOSUB enter

GOTO loop markend:

END enter:

A$ = ” ” read loop:

X = ASC (INPUT$(1,#1))

IF X = 10 THEN read end

A$ = A$ + CHR$(X)

GOTO read loop read end: print a$

RETURN

Note:

Only capital letters are accepted for commands!

71

Cooling

27

21. Cooling

Only for unit combinations with refrigerated bath

The refrigerated bath is used mainly for enabling lower than ambient or tap water temperatures in circulators or for cooling a heated bath down to a low temperature level very quickly.

The working temperature range is shown in the technical specifications.

Continuous cooling at set temperatures above approx. 100

°

C should be avoided!

This would result an excessively high temperature in the cooling circuit which would then result in the excess temperature protection being triggered and the compressor being switched off. Once the temperature in the compressor circuit were to get back to normal, the unit would then switch back on again.

This situation must be avoided as it results in a cyclical operation of the cooling compressor which in turn reduces the life-span of the unit.

1 In this case switch the refrigerated bath off at the mains switch 27.

Switching the cooling compressor on for quick cooling down purposes (even at working temperatures of 150

°

C) is however permissible.

72

Maintenance

26

22. Maintenance

The stainless steel surfaces of the bath vessel and of the housing may after some time show spots and become tarnished. Normal stainless steel cleaners as they are used in the kitchen can be used. The bath vessel and built-in components should occasionally (at least every time the bath liquid is changed) be cleaned using a household cleaner. Vinegarbased cleaners have proved to be suitable used according to the manufacturers recommendations.

Do not use scouring powder!

The inside of the bath vessel must be kept clean in order to ensure a long service life. Substances containing acidic or alkaline substances and metal shavings should be removed quickly as they could harm the surfaces causing corrosion.

If corrosion (e.g. small rust marks) should occur in spite of this, cleaning with stainless steel caustic agents has proved to be suitable. These substances should be applied according to the manufacturers recommendations.

For cleaning the integral baths you must not use any substances which contain solvents!

22.1 Cleaning the fins of the liquefier

In order to maintain the cooling capacity of the unit, cleaning has to be done two to four times per year, depending on the grade of soiling.

!

Switch off the unit and pull out the mains plug.

Only for V15 and V26 bath:

1 Clean the fins with compressed air.

For extreme soiling remove the cooling compressor casing (only specialist personnel).

Only for K15, K20, K35, K40, K41, K50 and K75:

1

2

Loosen ventilation grid 26: Rotate the mounting screws

90 ° in any direction and remove grid.

Clean fins with brush or similar tool.

3 Replace grid and push screws back in (do not rotate screws).

22.2 Discarding the unit:

One day the life span of your cooling unit will end.

Therefore:

!

This unit contains ozone-friendly coolant R134a and R404A. The unit may however only be discarded by authorized personnel.

73

Disassembly for Servicing

23. Disassembly for Servicing

41

46

38

1 Remove the temperature control module from the bath bridge/cooling bath (unscrew the four sunken screws 38).

2 Stand the temperature control module upside-down, c

44

!


44 a

40

Circulation set

3 Loosen the setscrew c of the circulation set 44,

4 Remove the tube 44a,

5 Loosen the screw of the circulation set 44 and remove the set upwards.

6 Unscrew and remove hexagon plug screw 41 and nozzle 40.

7 Unscrew and remove pair of screws 31,

8 Take off plate with seal and cooling coil upwards.

31

Cooling coil

9 Unscrew and remove the screw of the cooling coil 46.

10 Take off the cooling coil upwards.

74

Technical Specifications

24. Technical specifications

24.1 Temperature control module DC50 to DIN 58966

Operating temperature *)

Temperature accuracy

Heater capacity 230V / 115V

Pump pressure max.

Circulation capacity (open)

Max. flow rate during circulation using 12 mm ø hoses

Immersion depth from..to

Voltage

Frequency 230V / 115V

Total wattage consumption 230V / 115V

Safety elements according to category

Excess temp. protection

Low liquid level protection

Motor overload protection

Alarm signalling

FIS-system

Temperature setting

Setting limitation

Temperature display

°

C

+/– K

W mbar l/min l/min mm

V

Hz

VA

DC50 / RS232C

–50..200

2000 / 1200

RTA-system

Control type

Control sensor

RS 232 C

RS 485

* The working temperature range is dependant on the cooling selected..

0,01

300

17

12,5

DC50 / RS485

–50..200

0,01

2000 / 1200

300

17

12,5

85..140

85..140

230 V ± 10% oder 115 ± 10%

50..60 / 60 50..60 / 60

2050 / 1250 2050 / 1250

FL variable fixed yes

FL variable fixed yes opt. + acoust.

yes digital yes

LED green yes

PID

Pt 100 yes opt. + acoust.

yes digital yes

LED green yes

PID

Pt 100 yes

DC50 for K75

–75..100

0,01

1000

300

17

12,5

85..140

230 V ± 10%

50

1050

FL variable fixed yes opt. + acoust.

yes digital yes

LED green yes

PID

Pt 100 yes

Mains voltage

230 V

115 V

100 V

Subject to alterations

24.2 Fuse values DC50

Fuse(s) at the rear panel

DC50

2x10 A

1x15 A

1x15 A

Printed in Germany (FRG)

DC50 for K75

2x8 A

–

–

Part no. 003-3052

1.1.063.2–01.2002

75


24.3 Technical specifications of the refrigerated baths

K10 K15 K20 V15 V26

Mains voltage (V)

X X

K35

X

K40 K41

230V

±

10 %

220V ± 10 %

200V ± 10 %

115V

±

10 %

100V

±

10 %

X X X

X X

X

X

X

X

X

X

X

Frequency (Hz)

50 / 60 50 / 60 50 / 60 50 / 60 50 / 60

X

X

X

X

X

230V

220V

200V

115V

100V

230V

220V

200V

115V

100V

230V

220V

200V

115V

100V

60

2300

50 50

60

50

60

60 60 60 60

50–60 50–60 50–60 50–60

60

Total wattage consumption of the refrigerated baths (VA)

2600 2600 2550 2550 2550 2550

2550

2600

2600

1600 1600

1600

1600

1600

1500

1500

1500

1500

1700

Additional connections: Mains socket for temperature control unit (VA)

2100 2100 2100 2100 2100 2100 2100

2100

2100

2100

1300

V26

K35

K40

K41

K50

K75

Unit type / Mains voltage

K10

K15

K20

V15

1300

1300

1300

1300

1300

1300

1300

1300

1700

230 V

2x10 A/2x5 A

2x10 A/2x5 A

2x10 A/2x5 A

2x10 A/2x5 A

2x10 A/2x5 A

2x10 A/2x8 A

2x10 A/2x8 A

2x12 A/2x8 A

2x10 A/2x8 A

2x10 A/2x6 A

24.4 Fuse values

Fuses at the rear panel

220V 115V

–

–

–

–

1x12 A/1x6 A

1x12 A/1x6 A

1x12 A/1x6 A

1x12 A/1x6 A

–

–

2x10 A/2x8 A

2x12 A/2x8 A

2x10 A/2x8 A

–

1x12 A/1x6 A

1x10 A/1x8 A

–

–

–

–

K50

X

X

50

60

2650

2650

2100

2100

100V

–

1x12 A/1x6 A

1x12 A/1x6 A

1x12 A/1x6 A

1x12 A/1x6 A

–

–

–

–

–

K75

X

X

50

50 –60

2450

2450

2100

2100

76


24.5 Dimensions, material and the permissible temperature ranges of the baths

Bath

W15

W19

W26

W45

W46

W5P

W12P

W18P

W13

B5

B7

B12

V15

P5

P14

P21

B3

K35

K40

K41

K50

K75

V26

K10

K15

K20

S

S

S

S

S

S

S

S

S

S

S

S

S

I

S

I

I

S

S

S

S

S

S

Material Tempera-

ture ( ° C)

P 0..60

Bath opening (mm)

w. holder w. bridge

– 120 x 240

P

P

0..60

0..60

–

–

300 x 165

300 x 340

..200

..200

..200

..200

..200

..200

300 x 325

300 x 325

300 x 500

300 x 500

–

–

300 x 175

300 x 175

300 x 350

300 x 350

300 x 500

300 x 700

0..100

0..100

0..100

..200

..250

..300

..300

–5..150

–

–

–

–

–

–

–

300 x 325

130 x 175

300 x 190

300 x 380

130 x 100

140 x 150

130 x 100

220 x 140

300 x 175

–10..150

–10..150

–28..150

–28..150

–35..200

–40..150

–40..150

–47..200

–75..100

300 x 500

–

–

–

–

–

–

–

–

300 x 350

130 x 100

130 x 100

130 x 100

220 x 140

290 x 150

290 x 150

220 x 140

130 x 100

Bath depth

(mm)

150

Volume (l) from..to

4..6

150

150

9..12

15..19

150

200

150

200

300

200

160

160

160

150

150

200

200

200

200

150

150

150

150

150

150

150

200

7..12

10..15

12..19

20..26

37..42

26..44

5

14

21

3

4,5

7

12

10..15

20..16

3

4,5

4,5

8

12

15

8

6

P = Polyacryl, S = Stainless steel 1) Approx. height including temperature control module

I = Integral bath vessel made of PPO (modified)

Dimensions

(WxDxH) 1) (mm)

170 x 400 x 340

310 x 335 x 340

310 x 510 x 340

335 x 360 x 350

335 x 360 x 400

335 x 535 x 350

335 x 535 x 400

360 x 540 x 510

360 x 910 x 410

160 x 330 x 360

330 x 380 x 360

330 x 570 x 360

200 x 300 x 375

210 x 360 x 380

230 x 360 x 440

320 x 380 x 440

340 x 540 x 400

360 x 750 x 400

195 x 355 x 570

385 x 465 x 415

230 x 460 x 590

380 x 460 x 680

380 x 460 x 740

380 x 460 x 740

380 x 460 x 740

380 x 460 x 720

77

Thermo_Haake_DC50 Circulator & Baths_Manual

Instruction Manual

Circulator DC50 including all Baths

1.

Key to Symbols

Key to Symbols

Quality Assurance

2.

3.

Your Contacts at Thermo Haake

4.

Thermo Haake Test Certificate

Safety Notes

5.

Safety Notes

Safety Notes

Pull out the mains plug!

6.

Unit Description

7.

Unpacking / Setting Up

8.

Functional and Operating Elements

9.

Assembly

10. Connecting Hoses

11. Filling with Bath Liquid

5 to 95

C

–30 to 80

C

–40 to 200

C

–75 to –10

C

other

temperatures

12. Draining

13. Connecting Up

:

14. Operating

15. Excess Temperature Protection

16. Configuration

17. Fault Displays

18. Testing the Safety Features

19. External Connections

20. Interface RS232C or RS485

21. Cooling

22. Maintenance

23. Disassembly for Servicing

24. Technical specifications

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