19511402.doc
Circulators
MV-4/ MV-6/ MV-12/ MV-26
MW-4/ MW-6/ MW-12/ MW-26
MW-Z
!
1.951.1402BE2 01/03
Operating controls and functional elements
2
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 circulators. For optimum utilization
of all functions, we recommend that you thoroughly study this manual prior to
beginning operation.
Safety Warnings
Take care your unit is operated only by qualified persons.
Make sure you read and understand all instructions and safety precautions listed in
this manual before installing or operating your unit. If you have any questions
concerning the operation of your unit or the information in this manual, contact
JULABO.
Performance of installation, operation, or maintenance procedures other than those
described in this manual may result in a hazardous situation and may void the
manufacturer's warranty.
Transport the unit with care. Sudden jolts or drops may cause damages in the
interior of the unit.
Observe all warning labels.
Never remove warning labels.
Never operate damaged or leaking equipment.
Never operate the unit without bath fluid in the bath.
Always turn off the unit and disconnect the mains cable from the power source
before performing any service or maintenance procedures, or before moving the
unit.
Always empty the bath before moving the unit.
Never operate equipment with damaged mains power cables.
Refer service and repairs to a qualified technician.
In addition to the safety warnings listed above, warnings are posted
throughout the manual. These warnings are designated by an
exclamation mark inside an equilateral triangle. Read and follow
these important instructions. Failure to observe these instructions can
result in permanent damage to the unit, significant property damage,
personal injury or death.
MV / MW
3
TABLE OF CONTENTS
1. .Operating controls and functional elements....................................................... 4
2. .Quality Management System............................................................................... 6
3. .Unpacking and checking...................................................................................... 6
4. .Description ............................................................................................................ 6
5. .Preparations .......................................................................................................... 7
5.1. Installation.................................................................................................. 7
5.2. Bath liquids and tubing............................................................................. 7
5.3. Filling / draining......................................................................................... 8
5.4. Countercooling.......................................................................................... 9
5.5. Temperature application to external systems......................................10
5.6. Adjusting the pump flow......................................................................... 12
6. .Operating procedures ........................................................................................13
6.1. Power connection...................................................................................13
6.2. Switching on / Start - Stop.....................................................................13
6.3. Setting the temperatures.......................................................................15
6.4. Warning functions...................................................................................16
6.5. Setting the safety temperature (with shutdown function) ....................17
7. .Troubleshooting guide / Error messages.........................................................18
8. .Safety recommendations...................................................................................20
9. .ATC - Absolute Temperature Calibration.........................................................21
10. Configuration for counter-cooling ...............................................................22
11. Electrical connections..................................................................................23
12. Remote control.............................................................................................24
12.1. Setup for remote control........................................................................24
12.2. Communication with a PC or a superordinated data system............25
12.3. List of commands...................................................................................26
12.4. Status messages....................................................................................26
12.5. Error messages......................................................................................27
13. Cleaning the unit...........................................................................................28
14. Maintenance .................................................................................................28
15. Technical specifications..............................................................................29
16. EC Declaration of Conformity.....................................................................31
17. Warranty conditions .....................................................................................32
Operating controls and functional elements
4
1. Operating controls and functional elements
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5
6
7
9
10
11
12
1
2
3
4
8
14
15
16
20a1320b
Rear view
20a MV
Feed Return
20b MW Suction pump
Pressure pump
MV / MW
5
1 Mains power switch, illuminated
2 Start / stop key
3 Working temperature T1
4 Working temperature T2
5 High temperature warning limit
6 Low temperature warning limit
7 Safety temperature
8 Adjustable excess temperature protection
(safety temperature)
9 MULTI-DISPLAY (LED) temperature indication
10 Cursors left/right
11 Edit keys (increase/decrease setting)
12 Enter key (store)
Indicator light - Alarm
Indicator light - Cooling (not operational)
Indicator light - Heating
13 Connector: alarm output
14
1
5
69
RS232C interface
15 Mains fuses, fuse holders
16 Mains power cable with plug
20a Pump connectors on MV
20b Pump connectors on MW
Quality Management System
6
2. Quality Management System
The JULABO Quality Management System:
Development, production and distribution of temperature
application instruments for research and industries conform to
the requirements according to DIN EN ISO 9001:1994-08.
Certificate Registration No. QA 051004008.
3. Unpacking and checking
Unpack the circulator 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.
4. Description
The JULABO circulators are suitable for temperature application to liquids in a
bath tank.
The main functional elements are the heater, circulation pump, and control
electronics. An electronic proportional temperature control (PID characteristic)
adapts the heat supplied to the thermal requirements of the bath.
Setting is rapid and simple using the keypad with its easy to learn symbols. Keypad
is splash-proof, easily cleaned and ergonomically designed.
The microprocessor technology allows four temperature values to be stored and
indicated on the MULTI-DISPLAY (LED): working temperatures T1 and T2, high
and low temperature warning limits.
The safety value for excess temperature protection, a safety installation
independent from the control circuit, is adjustable on the front and visible on the
MULTI-DISPLAY (LED).
The RS232C port permits modern process engineering without additional interface,
directly on-line, from the circulator to your application equipment.
The circulator conforms to the safety requirements specified by DIN 12 876
(safety class III), as well as DIN 58 966, and the guideline for first voltage range
EN 61010.
MV / MW
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5. Preparations
5.1. Installation
!
Heating circulators
Place the circulator in an upright position.
Bridge mounted circulator
Place the bath tank in an upright position.
Adjust the bridge to width of the bath tank and
place it on the bath tank.
Bridge is extendable from 310 mm to 660 mm.
5.2. Bath liquids and tubing
Operation with flammable bath liquids permitted.
Recommended bath liquids:
Bath liquids Temperature range Flash point fire point
Thermal M +50 °C ... 170 °C >275 °C >320 °C
Thermal H +50 °C ... 250 °C >280 °C >350 °C
deionized water 5 °C bis 80 °C
ATTENTION: The maximum permissible viscosity is 30 mm2 x s
-1.
No liability for use of other bath liquids!
Order No. Bath liquid
8 940 100
8 940 101
8 940 102
8 940 103
Thermal M
Thermal M
Thermal H
Thermal H
10 liters container
5 liters container
10 liters container
5 liters container
Preparations
8
Recommended tubing:
Temperature range
CR tubing
Viton tubing
-20 °C to +120 °C
-50 °C to +200 °C
5.3. Filling / draining
Filling
Take care that no liquid enters the interior of the
circulator.
• Recommended maximum filling level with water as
bath liquid: 25 mm below the tank rim
• Recommended maximum filling level with bath oils:
40 mm below the tank rim
ATTENTION: the volume of bath oils will increase due to
thermal expansion when the bath temperature rises.
Exercise CAUTION when emptying hot bath liquids!
Draining
• Press the mains switch to turn the circulator off.
• Place the heating circulator near the rim of the table.
Use a suitable vessel as recipient for the bath liquid.
• A drain plug is located on the front of the bath tank
that is unscrewed to drain the bath.
• Remove the bridge mounted circulator from the bath
tank.
• Empty the bath tank.
Store and dispose the used bath liquid according
to the laws for environmental protection.
MV / MW
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5.4. Countercooling
25a
25b
25b
25a
For applications near the ambient temperature, the
cooling coil must be connected to the water mains.
Using tubing, connect the cooling coil (25a) to the tap
water supply, and lead the tap water in a sink through
the return connector (25b).
A specific water flow rate of 130 ml/minute (MW) or
100 ml/minute (MV) is sufficient to compensate for the
characteristic temperature.
By installing the MVS controller (26) and a solenoid
valve (27), sudden temperature increases can be rapidly
reversed by tap water flowing through the built-in
cooling coil.
Low water consumption: For applications requiring
constant near-ambient temperature, tap water is only
used in small amounts. Configuration see page 22.
Order No. Description
9 790 000 MVS controller
8 980 700 Solenoid valve, 220 V
26
27
25b25a
Preparations
10
NOTE: Flow-through cooler
Order No. Description
9 655 825 FD200
The FD200 is suitable as cooling device for liquids
in closed circuits (loops).
This unit is integrated in the return flow circuit
from the external system connected to a circulator,
and continuously withdraws heat from the liquid.
5.5. Temperature application to external systems
Temperature application to external, closed systems.
The circulator is used for temperature application to external, closed systems (loop
circuit) with simultaneous temperature application in the circulator bath.
24a
24b
Connecting the external system:
• Unscrew the collar nut from the pump connector
(24a).
• Slide the tubing onto the pump connectors for feed
and return flow (24a, 24b).
24a
24b
Unscrew the M 16 x 1 collar nuts on the pump
connectors (pressure pump 24a, suction pump 24b)
with a 19 mm (3/4") wrench and remove the sealing
disks. Using the collar nuts, screw on the tubing
connection fittings delivered with the unit
(8 mm or 12 mm in diameter) and tighten firmly.
Push on the tubings, and secure with tube clamps.
Attach the tubings to the connectors of the external
closed system, e.g., an instrument with a pressureresistant temperature jacket or a temperature coil, and
fasten with tube clamps to prevent slipping.
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