JULABO TW20 User Manual
English
Operating manual
Water Baths
TW2
TW8
TW12
TW20
1.951.6062-V2 06/13
JULABO GmbH
°C
77960 Seelbach / Germany
Tel. +49 (0) 7823 / 51-0
Fax +49 (0) 7823 / 24 91
info@julabo.de
www.julabo.de
19516062-V2.doc Version: 25.07.13
Congratulations!
You have made an excellent choice.
JULABO thanks you for the trust you have placed in us.
This operating manual has been designed to help you gain an understanding of the principles
of operating and possibilities of our water baths. For optimum utilization of all functions, we
recommend that you thoroughly study this manual prior to beginning operation.
The JULABO Quality Management System
Temperature control devices for research and industry are developed ,
produced, and distributed according to the requirements of ISO 9001
and ISO 14001. Certificate Registration No. 01 100044846
Unpacking and checking
Unpack the water baths and accessories and check for damages incurred during transit.
These should be reported to the responsible carrier, railway, or postal authority, and a request
for a damage report should be made. These instructions must be followed fully for us to
guarantee our full support of your claim for protecting against loss from concealed damage.
The form required for filing such a claim will be provided by the carrier.
Printed in Germany Changes without prior notification reserved
Important: keep operating manual for future use
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Water Baths
TABLE OF CONTENTS
Operating manual .................................................................................................................... 4
1. Intended use ................................................................................................................... 4
1.1. Description .................................................................................................................. 4
2. Operator responsibility – Safety recommendations ......................................................... 4
2.1. Disposal ...................................................................................................................... 6
2.2. EC Conformity ............................................................................................................ 7
2.3. Warranty conditions .................................................................................................... 7
2.4. Technical specifications .............................................................................................. 8
Operating instructions ........................................................................................................... 11
3. Operating controls and functional elements .................................................................. 11
4. Safety notes for the user ............................................................................................... 12
4.1. Explanation of safety notes ....................................................................................... 12
4.2. Explanation of other notes ........................................................................................ 12
5. Safety recommendations .............................................................................................. 13
6. Preparations .................................................................................................................. 14
6.1. Installation ................................................................................................................. 14
6.2. Bath fluids ................................................................................................................. 15
6.3. Filling / Draining ........................................................................................................ 16
6.4. Maintaining a constant water level / Counter cooling ................................................ 17
6.5. Accessoires .............................................................................................................. 18
7. Operating procedures ................................................................................................... 19
7.1. Power connection ..................................................................................................... 19
7.2. Switching on / Start - Stop ........................................................................................ 20
7.3. Setting the temperatures ........................................................................................... 20
8. Troubleshooting guide / Error messages ...................................................................... 21
9. Cleaning / repairing the unit .......................................................................................... 21
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Operating manual
Operating manual
1. Intended use
JULABO water baths have been designed for temperature application to specific fluids in a
bath tank.
JULABO water baths are not conceived for direct temperature application to
food and luxury articles or pharmaceutical and medico-technical products.
Direct temperature application means: Unprotected contact of the object with
the bath medium (bath fluid).
1.1. Description
The water baths are operated via the splash-proof keypad. The implemented
microprocessor technology allows to set and to store the setpoint that can be
indicated on the LED temperature display.
The PID temperature control adapts the heat supplied to the thermal
requirements of the bath.
The water baths conforms to the relevant requirements specified by
PID1
European guidelines.
The models TW8, TW12, TW20 provide a drain screw and handles for easy
relocation.
2. Operator responsibility – Safety recommendations
The products of JULABO GmbH warrant a safe operation if installation, operation and
maintenance is carried out according to common safety regulations. This section informs you
about potential dangers that may arise from operating the circulator and also mentions the
most important safety precautions
The operator is responsible for the qualification of the personnel operating the units.
The operator should be constantly informed about the dangers involved with their job
activities as well as preventive actions.
Make sure all persons expected to carry out operation, installation and maintenance of
the unit read and understand the safety information and operating instructions.
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Water Baths
When using hazardous materials, the circulator may only be operated by persons that are
absolutely familiar with these materials and the unit. These persons must be fully aware
of possible risks.
If you have any questions concerning the operation of your unit or the information in this
manual, please contact us!
Contact:
Safety recommendations for the operator
You received a product conceived for industrial use. Nevertheless, avoid strikes to the
housing, vibrations, damages to the keypad foil (keys, display) or contamination.
Make sure the product is regularly checked for proper condition. Regularly check (at least
every 2 years) the proper condition of the mandatory, warning, prohibition and safety
labels.
Take care that the mains supply features a low impedance to avoid any negative affects
on the instrument being operated in the same mains.
This unit is designed for operation in a controlled electromagnetic environment. This
means that transmitting devices (e.g. cellular phones) should not be used in the
immediate vicinity. Magnetic radiation may influence other units with components
susceptible to magnetic fields (e.g. a monitor). We recommend to keep a minimum
distance of 1 m.
JULABO GmbH
Eisenbahnstraße 45
77960 Seelbach / Germany
Tel. +49 (0) 7823 / 51-0 info@julabo.de
Fax +49 (0) 7823 / 24 91 www.julabo.de
Permissible ambient temperature: max. 40 °C, min. 5 °C.
Permissible relative air humidity: 50 % (40 °C).
Do not store in an aggressive atmosphere. Protect from contaminations.
Do not expose to sunlight.
Appropriate Operation
Only qualified personnel is authorized to perform configuration, installation, maintenance and
repairs of the water bath.
Routine operation can also be carried out by untrained personnel who should however be
instructed by trained personnel.
Use:
Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in
well ventilated areas. The unit is not for use in explosive atmosphere.
JULABO water baths have been designed for temperature application to water in a bath tank.
The bath may not be filled with flammable materials. Fire hazard!
Only use non-acid and non corroding bath fluids.
5
Operator responsibility – Safety recommendations
When using hazardous materials or materials that could become hazardous, the operator
must affix the enclosed safety labels (1 + 2) to the front of the unit so they are highly visible:
1
2
or
2
Particular care and attention is necessary because of the wide operating range.
There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be
touched.
Warning label W00: Colors: yellow, black
Danger area. Attention! Observe instructions.
(operating manual, safety data sheet)
Mandatory label M018: Colors: blue, white
Carefully read the user information prior to beginning operation.
Scope: EU
Semi S1-0701 Table A1-2 #9
Carefully read the user information prior to beginning operation.
Scope: USA, NAFTA
Warning label W26: Colours: yellow, black
Hot surface warning.
(The label is put on by JULABO)
2.1. Disposal
Valid in EU countries
See the current official journal of the European Union – WEEE directive.
Directive of the European Parliament and of the Council on waste electrical
and electronic equipment (WEEE).
This directive requires electrical and electronic equipment marked with a
crossed-out trash can to be disposed of separately in an environmentally
friendly manner.
Contact an authorized waste management company in your country.
Disposal with household waste (unsorted waste) or similar collections of
municipal waste is not permitted!
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2.2. EC Conformity
The products described in the operating instructions conform to the
requirements of the following European guidelines:
Low voltage regulations with respect to legal harmonization of the member
countries concerning electric devices for use within certain voltage limits.
EMC guideline with respect to legal harmonization of the member countries
concerning electromagnetic compatibility.
JULABO GmbH
Eisenbahnstr. 45
77960 Seelbach / Germany
Water Baths
2.3. Warranty conditions
JULABO GmbH warrants its products against defects in material or in workmanship, when
used under appropriate conditions and in accordance with appropriate operating instructions
for a period of ONE YEAR.
Extension of the warranty period – free of charge
With the ‘1PLUS warranty’ the user receives a free of charge extension to the warranty of up
to 24 months, limited to a maximum of 10 000 working hours.
To apply for this extended warranty the user must register the unit on the JULABO web site
www.julabo.de, indicating the serial no. The extended warranty will apply from the date of
JULABO GmbH’s original invoice.
JULABO GmbH reserves the right to decide the validity of any warranty claim. In case of
faults arising either due to faulty materials or workmanship, parts will be repaired or replaced
free of charge, or a new replacement unit will be supplied.
Any other compensation claims are excluded from this guarantee.
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