Haake Cryostat DC5-K75 User manual

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Instruction Manual
Cryostat DC5-K75
Part No. 002-8851
1-1-041-2 11.1996
Gebr. HAAKE GmbH HAAKE (USA) Rheo s.a. (France)
Dieselstraße 4 53 W. Century Road 99 Route de Versailles
D-76227 Karlsruhe Paramus, NJ 07652 91160 Champlan
Tel.[phone]HAAKE
oder+49(0)721 4094-444 Tel.[phone] Tel.[phone]
Fax [phone] Fax [phone] Fax [phone]
E-mail:[email protected] http://www.haake-usa.com http://www.rheo.fr
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Table of Contents
1. Key to Symbols 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Symbols used in this manual 3. . . . . . . . . . . . . . . . . .
1.2 Symbols used on the unit 3. . . . . . . . . . . . . . . . . . . . .
2. Quality Assurance 4. . . . . . . . . . . . . . . . . . . . . . . . . .
3. Your Contacts at HAAKE 4. . . . . . . . . . . . . . . . . . . .
4. Safety Notes 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Unit Description 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Safety features 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Safety class 2 according to DIN 12879 8. . . . . . . . . .
5.3 Applications 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Unpacking / Setting Up 9. . . . . . . . . . . . . . . . . . . . . .
6.1 Transportation damage? 9. . . . . . . . . . . . . . . . . . . . . .
6.2 Information conceming the CE sign 9. . . . . . . . . . . . .
6.3 Ambient conditions according to DIN 61010 10. . . . .
6.4 Resting time after transportation 10. . . . . . . . . . . . . . .
6.5 Ventilation 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Functional and Operating Elements 11. . . . . . . . . .
7.1 Front 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Rear 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Assembly
(if necessary after servicing) 13. . . . . . . . . . . . . . . . .
9. Connecting Hoses 14. . . . . . . . . . . . . . . . . . . . . . . . . .
9.1 Plastic hoses 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 HAAKE metal hoses 15. . . . . . . . . . . . . . . . . . . . . . . . . .
9.3 Pressure pump 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3.1 Temperature controlling an object in the
internal bath 16. . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3.2 Connection of external closed systems 16. . . .
10. Filling with Bath Liquid 17. . . . . . . . . . . . . . . . . . . . . .
10.1 Recommended bath liquids 17. . . . . . . . . . . . . . . . . . . .
10.2 Filling with heat transfer liquid 19. . . . . . . . . . . . . . . . .
11. Draining 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12. Connecting Up 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12.1 Connecting to the mains 21. . . . . . . . . . . . . . . . . . . . . .
12.2 Checking the liquid circuit 21. . . . . . . . . . . . . . . . . . . . .
12.3 Changing the mains plug 21. . . . . . . . . . . . . . . . . . . . . .
12.4 Fuses on the unit 22. . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
13. Operating 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13.1 Switching on 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13.2 Starting up again after a power failure 23. . . . . . . . . .
13.3 Displaying the software version 24. . . . . . . . . . . . . . . .
13.4 Setting the set temperature 24. . . . . . . . . . . . . . . . . . . .
13.5 Heating control lamp 25. . . . . . . . . . . . . . . . . . . . . . . . .
13.6 Displaying the actual temperature 25. . . . . . . . . . . . . .
13.7 Temperature limitation 27. . . . . . . . . . . . . . . . . . . . . . . .
13.7.1Subsequently altering the temperature
limitation 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13.8 Cooling 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13.9 RS232C Interface 28. . . . . . . . . . . . . . . . . . . . . . . . . . . .
13.10The display cannot be altered 28. . . . . . . . . . . . . . . . .
14. Excess Temperature Protection 29. . . . . . . . . . . . . .
14.1 Excess temperature protection dial 29. . . . . . . . . . . . .
14.1.1Setting the excess temperature 30. . . . . . . . . .
14.1.2Testing the cut-off point 30. . . . . . . . . . . . . . . . .
15. Fault Displays 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15.1 Excess temperature 31. . . . . . . . . . . . . . . . . . . . . . . . . .
15.2 Low liquid level 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15.3 Pump or motor overloading 31. . . . . . . . . . . . . . . . . . . .
15.4 Sensor breakage or short circuit 32. . . . . . . . . . . . . . .
15.5 Undefined fault 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15.6 Range exceeded 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15.7 Parity fault 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15.8 External fault 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15.9 Fault eliminated? 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16. Testing the Safety Features 33. . . . . . . . . . . . . . . . . .
16.1 Excess temperature protection 33. . . . . . . . . . . . . . . . .
16.2 Low liquid level protection 33. . . . . . . . . . . . . . . . . . . . .
17. RS232C Interface for DC5 34. . . . . . . . . . . . . . . . . . . .
17.1 Connecting the DC5 to a computer 34. . . . . . . . . . . . .
17.2 Interface parameters 35. . . . . . . . . . . . . . . . . . . . . . . . .
17.3 Requirements made of external units 36. . . . . . . . . . .
17.4 Setting the desired set value 36. . . . . . . . . . . . . . . . .
17.5 Correction value 36. . . . . . . . . . . . . . . . . . . . . . . . . . . .
17.6 Commands for DC5 circulators 37. . . . . . . . . . . . . . . .
17.7 DC5 keys 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17.8 Operating status 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17.9 Example of a BASIC program 39. . . . . . . . . . . . . . . . . .
18. Maintenance 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18.1 Cleaning the fins of the liquefier 40. . . . . . . . . . . . . . . .
18.2 Discarding the unit 40. . . . . . . . . . . . . . . . . . . . . . . . . . .
19. Technical Specifications 41. . . . . . . . . . . . . . . . . . . . .
19.1 Fuse values 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Key to Symbols
3
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.
1Indicates 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)
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Quality Assurance / Your Contacts at HAAKE
4
2. Quality Assurance
Dear customer,
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 devel-
oped, manufactured and managed according to our custom-
ers 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 pro-
cess to certify that they are produced according to the speci-
fications as well as to monitor correct functioning and to con-
firm 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 manufactur-
ing.
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.
3. Your Contacts at HAAKE
Please get in contact with us or the authorized agent who
supplied you with the unit if you have any further questions.
Gebrüder HAAKE GmbH,
Dieselstrasse 4,
D-76227 Karlsruhe
GERMANY
Tel. [phone]HAAKE
or [phone]
Fax [phone]
E-mail [email protected]
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.
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Safety Notes
5
4. 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 educa-
tion 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 guaran-
teed 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 car-
ried out by specialist personnel. Considerable damage
can be caused by improper repairs. The 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 suffi-
cient.
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 pur-
poses and/or in the vicinity of patients.
Many unit parts can become warm as a result of normal
unit functioning! Please ensure that adequate 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!
Only use the heat transfer liquids recommended by
HAAKE. Please refer to the respective EC – Safety Data
Sheet.
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Safety Notes
6
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:
•inflammable, easily ignited or explosive
•hazardous to health
•environmentally unsafe
i.e.: dangerous
You alone are responsible for the handling of these sub-
stances!
Our advice:
•If in doubt, consult a safety specialist.
•Read the product manufacturer’s or supplier’s
“
EC – SAFETY DATA SHEET ”
•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 recep-
tacles with a protective ground.
•Protection IP 20 according to EN 60529
i. e. regarding the protection against accidently touch-
ing live parts and damage by foreign matter, it has been
ensured that foreign bodies with a thickness or diame-
ter of more than 12 mm cannot penetrate.
No special precautions were taken against the pe-
netration of water and dust. The device should there-
fore not be used in a dusty atmosphere or in the neigh-
borhood 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 work is about to be
carried out.
Complete separation means:
Pull out the mains plug!
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Unit Description
7
5. Unit Description
This unit fulfills the requirements of safety class 2 according
to DIN 12879 and is thus suitable for unsupervised continu-
ous operation.
The circulator pump motor is protected against thermal over-
loading.
5.1 Safety features
The comprehensive safety system is designed on the princi-
ple of the concept of the “single fault” (EN 61010). This as-
sumes 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,
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
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Unit Description
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5.2 Safety class 2 according to DIN 12879
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.
If a safety feature is triggered…
•the 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 immedi-
ately i.e. the safety circuit transfers the unit to a stable,
safe condition,
•the heat transfer liquid in the heating unit gradually ad-
justs 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.
5.3 Applications
The circulator is intended for…
•temperature controlling samples within the circulator’s
own bath or for…
•temperature controlling closed temperature control cir-
cuits such reactors, heat exchangers or similar objects.
Open vessels cannot be temperature controlled as these cir-
culators are only equipped with a pressure pump.
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Unpacking / Setting Up
9
6. Unpacking / Setting Up
6.1 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).
6.2 Information concerning the CE sign
HAAKE circulators and cryostats carry the CE sign which con-
firms 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.
The specialist basic standards to be applied are EN 50081-2
for interference emission and EN 50082-2 for interference
resistance. The following tests were carried out:
for according to
EN 50081 EN 55011 class B (interference voltage)
EN 55011 class B (interference radiation)
EN 50082 EN 61000-4-2 (discharging static electricity)
ENV 50140 (electromagnetic HF field,
(amplitude modulated)
EN 61000-4-4 (quick transient interference
(variable)
ENV 50141 (high-frequency asymmetrical,
(amplitude modulated)
EN 61000-4-8 (magnetic field with power-
(engineered frequency)
There are thus no limitations placed on usage. A declaration
of conformity can be supplied with the ordered unit on
request.
Our strict standards regarding minimum operating quality and
the resulting considerable amount of time and money spent
on development and testing reflect our commitment to guar-
antee 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 moni-
tors or analytical instruments can be affected if their manufac-
turers 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 mfrom such units.
The CE-sign also certifies the conformity with the EU-direc-
tive 72/23/EWG (low voltage regulation). The applied stan-
dards are EN61010-1 and EN61010-2-010.
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23
29
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Unpacking / Setting Up
10
6.3 Ambient conditions according to 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
6.4 Resting time after transportation
As we can unfortunately not guarantee that our refrigerated
circulators are always transported according to our recom-
mendations (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.
6.5 Ventilation
Keep all ventilation grids 23 and 29 free from obstruc-
tion 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.
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Functional and Operating Elements
11
7. Functional and Operating Elements
7.1 Front
1
6
2
3
47
8
5
A
22
21
23
2424
ASymbol: Read the instruction manual!
1Mains switch
2Reset button
(also Start key)
3Menu selection key
4Heating control lamp
5Menu position display
6Set or actual temperature display /
fault display
7Value alteration
(↑) higher / (↓) lower
8Enter key
21 Cooling unit mains switch
22 Drainage nozzle
23 Ventilation grid (removeable,
four mounting points: )
24 Handles
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Functional and Operating Elements
12
7.2 Rear
11 13
12
15
14
25
26
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A
27
28
29
11 Mains cable
12 Fuses
(if this fuse is triggered,
see chap. 12.4)
13 Excess temperature setting dial
14 Air inlet opening
15 RS232C interface
25 Mains socket for temperature
control unit
26 Fuses for mains socket 25
(if triggered, see chap. 12.4)
27 Fuses for cooling circuit
(if triggered, see chap. 12.4)
28 Mains cable
29 Ventilation grid
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34
..
34a
31
37
37
38
9
40
9a
40
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Assembly
13
8. Assembly
(if necessary after servicing)
1Stand the temperature control module DC5 upside-
down,
Dry unit first if necessary, in order to avoid expos-
ing the electronics to water penetration.
2Slide the seal 34 over the shaft up to shortly before the
screw heads 34a. Please note the the screws are not
symmetrically aligned!
Mounting the plate:
3Slide the plate 37 with the accessories already fitted
over the shaft as far as the seal 34. Now slide it and the
seal as far as the screw heads or stopper.
4Insert the screws 31 through the plate and screw tight.
Mounting the swivel part of the circulation set 40:
5Preparation:
Unscrew the screw 9from the unit shaft and loosen
screw 9a of the circulation set 40.
6Locate swivel part 40,
7Insert screw 9. Slightly tighten both screws 9and 9a.
Mounting the plate onto the cooling unit K75:
8Locate the plate 37 with the attached temperature con-
trol module on top of the bath vessel / cooling unit and
secure using the four sunken screws 38.
9Fit the supplied conical bungs in the thermometer holes
in the bridge.
If disassembly is necessary, follow these steps in re-
verse order.
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Connecting Hoses
14
9. Connecting Hoses
Pump nozzle A:
front: return flow from external object
rear: outlet to external object (pressure side)
Hoses are normally used to connect the pump with an exter-
nal vessel. If objects are to be temperature controlled in the
internal bath only, the pump nozzles Acan be closed with
a covering plate D attached with a union nut E (supplied as
standard).However, in order to achieve a better temperature
constancy, it is recommended not to close but to connect the
two nozzles with a short hose with a min. length of 50 cm.
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 tempera-
ture 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 circu-
lator.High operating temperatures will lead to high tem-
peratures 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!
9.1 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.
HAAKE circulators are supplied with Perbunan hoses as
standard. They have proven their versatility in the tempera-
ture range between - 30 to + 100
° C.
Perbunan is resistant against water, alcohol and most oils.
The hose delivered as standard is not suitable for
temperatures below –30°C.!
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ABE
A
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7
Connecting Hoses
15
Hoses for other thermal liquids and temperature ranges can
also be supplied by HAAKE:
Hose material: Permissible Remarks:
Temperature range:
PVC 10 to 60°C For water only!
Viton – 75 to 200°C
Silicone – 30 to 220°C Not for silicone oil!
Metal –100 to 350°C universally suitable
The hoses are connected using the hose fittings Bsupplied
for 8 or 12 mm ∅which are attached to the pump nozzle A
with the coupling nut E.
9.2 HAAKE metal hoses
HAAKE metal hoses (stainless steel insulated) offer a partic-
ularly high degree of safety and are suitable for both low and
high temperatures.
The metal hoses are attached directly to the nozzle A, gas-
kets are not required.
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 me-
ters from HAAKE. Couplings for connecting two hoses are
also available if other lengths should be required for a partic-
ular 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 at-
taching them complies to the left hand sketch.
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A
Heating / Open-bath circulator
External
Object
Connecting Hoses
16
9.3 Pressure pump
9.3.1 Temperature controlling an object in the
internal bath
Close pressure and return port A with the closing
pieces and coupling nuts or, better yet, connect the two
nozzles with a short hose.
9.3.2 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 rear) to the external ob-
ject and then back to the return port (at the front).
If it c annot be avoided that the external object is si-
tuated 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.
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!
Filling
17
10. Filling with Bath Liquid
The selection of the proper bath liquid (heat transfer liquid)
influences the capacity of a temperature control unit deci-
sively. The technical data with special emphasis on the tem-
perature 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.
10.1 Recommended bath liquids
5 to 95°C Distilled Water
•Normal tap water leads to calcareous deposits neces-
sitating frequent unit decalcification.
Calcium tends to deposit itself on the heating ele-
ment. The heating capacity is reduced and service
life shortened!
•Water, of course, can be employed up to 95°C, howev-
er above 80°C water vaporization reaches a level
which necessitates the liquid to be constantly replenis-
hed.
–30 to 80°C 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 10°C lower than the oper-
ating temperature of the particular application. This will pre-
vent the water from gelling (freezing) in the area of the evap-
orating 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.
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! Important !
! Important !
! Important !
! Important !
Filling
18
Other heat transfer liquids supplied by HAAKE:
–75 to 32°C HAAKE SIL 100
–40 to 100°C HAAKE SIL 180
–75 to –30°C HAAKE Synth 20
–50 to 34°C HAAKE Synth 60
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
HAAKE heat transfer liquids are supplied with an EC Safety
Data Sheet.
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
It is absolutely mandatory that the overtemperature cut-
off point is set lower than the flash point for the heat
transfer liquid selected. (See chapter 16).
The highest working temperature as defined by the EN
61010 (IEC 1010) must be limited to 25°C below the
flashpoint of the bath liquid.
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 dur-
ing usage.
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