Julabo F12-MA User manual

19530366.doc 30.11.11
English
Operating Manual
Refrigerated and Heating
Circulators
F12-MA FP35-MA
F25-MA FP40-MA
F33-MA FP50-MA
F32-MA
F34-MA FPW50-MA
Original Operating Manual
JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone: [phone]
Fax: [phone]
info @ julabo.com
www.julabo.com

Operating manual
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 operation
and possible applications of our circulators. For optimal 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 9001:2008. Certificate Registration No. 01 100044846
Unpacking and inspecting
Unpack the circulator and accessories and inspect them for possible transport damage.
Damage should be reported to the responsible carrier, railway, or postal authority, and a
damage report should be requested. 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.
1.953.0366 11/11 Printed in Germany Changes without prior notification reserved
Important: keep operating manual for future use

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TABLE OF CONTENTS
Operating manual ..........................................................................................................5
1. Intended use ..........................................................................................................5
1.1. Description .........................................................................................................5
2. Operator responsibility – Safety recommendations ...............................................6
2.1. Disposal..............................................................................................................8
2.2. Technical specifications .....................................................................................9
2.3. Cooling water connection .................................................................................13
Operating instructions ..................................................................................................15
3. Safety notes for the user ......................................................................................15
3.1. Explanation of safety notes ..............................................................................15
3.2. Explanation of other notes ...............................................................................15
3.3. Safety recommendations..................................................................................15
4. Operating controls and functional elements.........................................................18
4.1. Circulator ..........................................................................................................18
4.2. Cooling Machine...............................................................................................20
5. Preparations.........................................................................................................21
5.1. Installation ........................................................................................................21
5.2. Bath fluids.........................................................................................................22
5.3. Temperature application to external systems ..................................................23
5.3.1. Tubing ......................................................................................................23
5.4. Filling / draining ................................................................................................25
6. Operating procedures ..........................................................................................26
6.1. Power connection.............................................................................................26
6.2. Switching on / Start – Stop...............................................................................26
6.2.1. Switching on the circulator .......................................................................26
6.2.2. Switching on the cooling machine............................................................27
7. Setting of temperatures ............................................................................28
7.1. 1-setpoint mode / Direct setting of temperatures .............................................28
7.2. Using the pre-setting in the menu ........................................................28
8. Safety installations, warning functions .....................................................30
8.1. Excess temperature protection ........................................................................30

Operating manual
4
8.1.1. Early warning system, low level protection ..............................................31
8.2. Switch-over from warning to shutdown function ..............................................32
8.3. Over and Sub temperature warning function ...................................................33
9. Menu functions.........................................................................................34
9.1. MENU PUMP – Setting of pump pressure.......................................................35
9.2. MENU Configuration ........................................................................................36
9.2.1. Configuration of the mode of the key ...........................................37
9.2.2. Remote control: activate – deactivate......................................................37
9.2.3. Automatic / non-automatic start mode .....................................................37
9.2.4. Reset - Factory setting .............................................................................38
9.3. MENU Control parameters – Xp, Tv, Tn ..........................................................38
9.4. MENU SERIAL - BAUDRATE, PARITY, HANDSHAKE ..................................40
9.5. MENU ATC - Absolut Temperature Calibration ...............................................41
9.5.1. ATC STATUS - YES / NO........................................................................43
9.5.2. ATC - TYPE: 1 -/ 2 -/ 3 POINT.................................................................43
9.5.3. Example: 3-point calibration for internal control......................................44
9.6. MENU LIMITS ..................................................................................................46
10. Troubleshooting guide / error messages .............................................................47
11. Electrical connections ..........................................................................................50
12. Remote control.....................................................................................................51
12.1. Setup for remote control ..............................................................................51
12.2. Communication with a PC or a superordinated data system.......................51
12.3. List of commands.........................................................................................52
12.4. Status messages .........................................................................................53
12.5. Error messages............................................................................................53
13. JULABO Service – Online remote diagnosis .......................................................55
14. Cleaning / repairing the unit .................................................................................56
15. WARRANTY PROVISIONS .................................................................................57

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Operating manual
1. Intended use
JULABO circulators have been designed to control the temperature of specific fluids in a bath
tank.
The units feature pump connections for temperature control of external systems (loop circuit).
JULABO circulators are not suitable for direct temperature control of foods,
semi-luxury foods and tobacco, or pharmaceutical and medical products.
Direct temperature control means unprotected contact of the object with the
bath medium (bath fluid).
1.1. Description
PID2
ATC
3
RS232
PUMP
SMART
The circulators are operated via the splash-proof keypad. The implemented
microprocessor technology allows to set and to store different values that
can be indicated on the MULTI-DISPLAY (LED). Three menu keys facilitate
adjusting setpoints, warning and safety functions and menu functions.
The PID temperature control adapts the heat supplied to the thermal
requirements of the bath.
Absolute Temperature Calibration (ATC3) provides a high temperature
stability in the bath. With the 3-point calibration an offset is adjusted at three
temperatures to ensure an accurate temperature pattern at the selected spot
in the bath over the full temperature range.
Electrical connections:
The serial interface RS232 allows modern process technology without
additional interface.
Alarm output for external alarm message or control of JULABO refrigerating
baths or solenoid valve (cooling water).
The excess temperature protection conforming to IEC 61010-2-010 is a
safety installation independent from the control circuit. This protection can be
indicated and set on the MULTI-DISPLAY (LED).
The early warning system for low level signals that bath fluid needs to be
refilled before the low level protection conforming to IEC 61010-2-010
causes a complete shut-down of the main functional elements.
The pump capacity (electronically adjustable via the motor speed) enables to
adapt to varying conditions for internal and external temperature
applications.
The circulator conforms to the relevant requirements specified by European
guidelines.

Operator responsibility – Safety recommendations
6
2. Operator responsibility – Safety recommendations
The products of JULABO ensure safe operation when installed, operated, and maintained
according to common safety regulations. This section explains the potential dangers that may
arise when operating the circulator and also specifies the most important safety precautions to
preclude these dangers as far as possible.
The operator is responsible for the qualification of the personnel operating the units.
The personnel operating the units should be regularly instructed about the dangers
involved with their job activities as well as measures to avert these dangers.
Make sure all persons tasked with operating, installing, and maintaining the unit have read
and understand the safety information and operating instructions.
When using hazardous materials or materials that could become hazardous, the circulator
may be operated only by persons who are absolutely familiar with these materials and the
circulator. 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 JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone:[phone]
Fax: [phone]
info @ julabo.com
www.julabo.com
Safety instructions for the operator:
You have received a product designed for industrial use. Nevertheless, avoid strikes to the
housing, vibrations, damage to the operating-element panel (keypad, display), and
contamination.
Make sure the product is checked for proper condition regularly (depending on the
conditions of use). Regularly check (at least every 2 years) the proper condition of the
mandatory, warning, prohibition and safety labels.
Make sure that the mains power supply has low impedance to avoid any negative effects
on instruments being operated on 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 affect other devices with components sensitive to magnetic fields
(e.g., monitors). We recommend maintaining a minimum distance of 1 m.
Permissible ambient temperature: max. 40 °C, min. 5 °C.
Permissible relative humidity: 50% (40 °C).
Do not store the unit in an aggressive atmosphere.
Protect the unit from contamination.
Do not expose the unit to sunlight.

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Appropriate operation
Only qualified personnel is authorized to perform configuration, installation, maintenance and
repairs of the circulator.
Routine operation can also be carried out by untrained personnel who should however be
instructed by trained personnel.
Use:
The bath can be filled with flammable materials. Fire hazard!
There might be chemical dangers depending on the bath medium used.
Observe all warnings for the used materials (bath fluids) and the respective instructions
(safety data sheets).
Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in
well ventilated areas.
Only use recommended materials (bath fluids). Only use non-acid and non corroding
materials.
When using hazardous materials or materials that could become hazardous, the operator
must affix the enclosed safety labels to the front of the unit so they are highly visible:
If this unit is intended for use within the United States of America, all 3 warning labels must
be affixed to the housing of the unit prior to use.
Directions for the positioning of the individual warning labels are enclosed with the warning
labels included in the delivery.Warning labels must be easily visible to users.
1
Warning label W00: Colors: yellow, black
Danger area. Attention! Observe instructions.
(operating manual, safety data sheet)
2
or
Mandatory label M018: Colors: blue, white
Carefully read the user information prior to beginning operation.
Scope: EU
2
Semi S1-0701 Table A1-2 #9
Carefully read the user information prior to beginning operation.
Scope: USA, NAFTA
3
Warning label Proposition 65
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 W26: Colors: yellow, black
Hot surface warning.
(The label is put on by JULABO)
Observe the instructions in the manuals for instruments of a different make that you connect to
the circulator, particularly the respective safety recommendations. Also observe the pin
assignment of plugs and technical specifications of the products.

Operator responsibility – Safety recommendations
8
2.1. Disposal
The circulator contains a back-up battery that supplies voltage to memory chips when the unit
is switched off. Do not dispose of the battery with household waste!
Depending on battery regulations in your country, you might be obliged to give back used or
defect batteries to gathering places.
The product may be used with oil as bath fluid. These oils fully or partially consist of mineral oil
or synthetic oil. For disposal, observe the instructions in the safety data sheets.
These units contains refrigerants– at this time considered not to have any negative effects on
the ozone layer. However, during the long operating period of the unit, disposal prescriptions
may change. So only qualified personnel should take care of disposal.
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. Technical specifications
F12-MA F25-MA
Working temperature range °C -20 ... 200 -28 ... 200
Temperature stability °C ±0,02 ±0,02
Cooling capacity
Medium ethanol
°C
kW
+20 0 -20
0.16 0.1 0.02
+20 0 -20
0.26 0.2 0.06
Refrigerant R134a R134a
Overall dimensions (WxDxH) cm 20x36x56 23x42x61
Bath opening (WxL) cm 13x15 12x14
Bath depth cm 13 14
Filling volume from ... to liters 3 ... 4,5 3 ... 4,5
Weight kg 23 31
Mains power connection
208V - 230V; 50Hz - 60Hz
V; Hz 187 - 253; 50 - 60
(perm. range)
187 - 253; 50 - 60
(perm. range)
Current draw (at 208V) A 11 12
Current draw (at 230V) A 11 12
Current draw (at 230V) CH A <9 + 1> <9 + 2>
Mains power connection
100V - 115V; 50Hz - 60Hz
V; Hz 90 - 127; 50 - 60
(perm. range)
90 - 127; 50 - 60
(perm. range)
Current draw (at 100V) A 15 13
Current draw (at 115V) A 12 13
F32-MA
Working temperature range °C -35 ... 200
Temperature stability °C ±0,02
Cooling capacity
Medium ethanol
°C
kW
+20 0 -20
0.45 0.39 0.15
Refrigerant R134a
Overall dimensions (WxDxH) cm 31x42x64
Bath opening (WxL) cm 18x12
Bath depth cm 15
Filling volume from ... to liters 5,5 ... 8
Weight kg 37
Mains power connection
208V - 230V; 50Hz - 60Hz
V; Hz 187 - 253; 50 - 60
(perm. range)
Current draw (at 208V) A 10
Current draw (at 230V) A 13
Mains power connection
100V - 115V; 50Hz - 60Hz
V; Hz 90 - 127; 50 - 60
(perm. range)
Current draw (at 100 V) A 14
Current draw (at 115 V) A 14
All measurements have been carried out at:
rated voltage and frequency ambient temperature: 20 °C
Technical changes without prior notification reserved.

Operator responsibility – Safety recommendations
10
F33-MA F34-MA
Working temperature range °C -30 ... 200 -30 ... 150
Temperature stability °C ±0,02 ±0,02
Cooling capacity
Medium ethanol
°C
kW
+20 0 -20 -30
0.5 0.32 0.12 0.03
+20 0 -20 -30
0.45 0.32 0.14 0.03
Refrigerant R134a R134a
Overall dimensions (WxDxH) cm 36x46x69 38x58x62
Bath opening (WxL) cm 23x14 24x30
Bath depth cm 20 15
Filling volume from ... to liters 12 ... 16 14 ... 20
Weight kg 44 42
Mains power connection
208V - 230V; 50Hz - 60Hz
V; Hz 187 - 253; 50 - 60
(perm. range)
187 - 253; 50 - 60
(perm. range)
Current draw (at 208V) A 12 13
Current draw (at 230 V) A 12 12
Current draw (at 230 V) CH A ----- <9 + 2>
Mains power connection
100V - 115V; 50Hz - 60Hz
V; Hz 90 - 127; 50 - 60
(perm. range)
90 - 127; 50 - 60
(perm. range)
Current draw (at 100 V) A 15 -----
Current draw (at 115 V) 15 14
FP35-MA
Working temperature range °C -35 ... 150
Temperature stability °C ±0,02
Cooling capacity
Medium ethanol
°C
kW
+20 0 -20 -30
0.45 0.39 0.15 0.05
Refrigerant R134a
Overall dimensions (WxDxH) cm 31x42x64
Bath opening (WxL) cm 18x12
Bath depth cm 5
Filling volume from ... to liters 1,7 ... 2.5
Weight kg 37
Mains power connection
208V - 230V; 50Hz - 60Hz
V/ Hz 187 - 253; 50 - 60 (perm. range)
Current draw (at 208V) A 12
Current draw (at 230V) A 12
Current draw (at 230V) CH
Mains power connection
100V - 115V; 50Hz - 60Hz
V/ Hz 90 - 127; 50 - 60 (perm. range)
Current draw (at 100V) A 14
Current draw (at 115V) A 14
All measurements have been carried out at:
rated voltage and frequency ambient temperature: 20 °C
Technical changes without prior notification reserved.

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FP40-MA
Working temperature range °C -40 ... 200
Temperature stability °C ±0,02
Cooling capacity
Medium ethanol
°C
kW
[phone]
0.68 0.5 0.32 0.17 0.04
Refrigerant R404A
Overall dimensions (WxDxH) cm 37x46x69
Bath opening (WxL) cm 23x14
Bath depth cm 20
Filling volume from ... to liters 9 ... 16
Weight kg 48
Ambient temperature °C 5 … 40
Mains power connection
208V - 230V; 50Hz - 60Hz V; Hz 197 - 253; 50 - 60 (perm. range)
Current draw (at 208V) A 13
Current draw (at 230 V) A 13
Current draw (at 230 V) (CH) A 9+3
FP50-MA / FPW50-MA
Working temperature range °C -50 ... 200
Temperature stability °C ±0,02
Cooling capacity
Medium ethanol
°C
kW
[phone]
0.9 0.8 0.5 0.32 0.16
Refrigerant R404A / R507
Overall dimensions (WxDxH) cm 42x49x70
Bath opening (WxL) cm 18x12
Bath depth cm 15
Filling volume from ... to liters 5,5 ... 8
Weight kg 55
Mains power connection 230 V/50 Hz V/ Hz 207-253 / 50
Current draw (at 230 V) A 14
Current draw (at 230 V) (CH) A 9+4
Mains power connection 230 V/60 Hz V/ Hz 207-253 / 60
Current draw (at 230 V) A 14
All measurements have been carried out at:
rated voltage and frequency ambient temperature: 20 °C
Technical changes without prior notification reserved.

Operator responsibility – Safety recommendations
12
MA
Temperature selection digital
via keypad indication on MULTI-DISPLAY(LED)
remote control via personal computer indication on monitor
Temperature indication MULTI-DISPLAY (LED)
Resolution (-9.99 …. +99.99 = 0.01) °C 0.01 / 0.1
Absolute Temperature Calibration °C ±3
Temperature control PID
Heater wattage (at 230 V) kW 2,0
Heater wattage (at 115V) kW 1,0
Electronically adj. pump capacity stages 1 ... 4
Flow rate max.at 0 bar l/min 11 ... 16
Pressure max. max. at 0 l bar 0.23 ... 0.45
Electrical connections:
External alarm device Vdc/mA 24-0 / max. 25
Computer interface RS232
Ambient temperature °C 5 ... 40
Safety installations according to IEC 61010-2-010:
Excess temperature protection adjustable from 0 °C ... 230 °C
Low liquid level protection float switch
Classification according to DIN 12876-1 class III
Supplementary safety installations
Early warning system for low level float switch
High temperature warning function optical + audible (in intervals)
Low temperature warning function optical + audible (in intervals)
Supervision of working sensor plausibility control
Reciprocal sensor monitoring between
working and safety sensors difference >35 K
Alarm message optical + audible (permanent)
Warning message optical + audible (in intervals)

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Environmental conditions according to IEC 61 010-1:
Use only indoor.
Altitude up to 2000 m - normal zero.
Ambient temperature: +5 ... +40 °C
Air humidity:
Max. rel. humidity 80 % for temperatures up to +31 °C,
linear decrease down to 50 % relative humidity at a temperature of +40 °C
Max. mains fluctuations of ±10 % are permissible.
Protection class according to IEC 60 529 IP21
The unit corresponds to Class I
Overvoltage category II
Pollution degree 2
Caution:
The unit is not for use in explosive environment
Standards for interference resistance according to EN 61326-1
This unit is an ISM device classified in Group 1 (using high frequency for internal purposes)
Class A (industrial and commercial range).
2.3. Cooling water connection
Cooling water pressure (IN/OUT) max. 6 bar
Pressure difference (IN - OUT) 3.5 to 6 bar
Cooling water temperature < 20 °C

Operator responsibility – Safety recommendations
14
Notice: Cooling water circuit
Risk of oil leaking from the refrigeration system (compressor) of the
recirculating cooler into the cooling water in case of a fault in the cooling water
circuit!
Observe the laws and regulations of the water distribution company valid in
the location where the unit is operated.
Notice:
Danger of corrosion of heat exchanger due to unsuitable quality of
cooling water.
•Due to its high content of lime, hard water is not suitable for cooling and
causes scale in the heat exchanger.
•Ferrous water or water containing ferrous particles will cause formation of
rust even in heat exchangers made of stainless steel.
•Chlorinated water will cause pitting corrosion in heat exchangers made of
stainless steel.
•Due to their corrosive characteristics, distilled water and deionized water
are unsuitable and will cause corrosion of the bath.
•Due to its corrosive characteristics, sea water is not suitable.
•Due to its microbiological (bacterial) components, which settle in the heat
exchanger, untreated and unpurified river water and water from cooling
towers is unsuitable.
•Avoid particulate matter in cooling water.
•Avoid putrid water.
Recommended quality of cooling water:
pH 7.5 to 9.0
Sulfate [SO4 2- ] < 100 ppm
Hydrocarbonate [HCO 3-]/sulfate [SO4 2-] > 1 ppm
Hardness [Ca 2+, Mg 2+]/[HCO 3-] > 0.5 °dH
Alkalinity 60 ppm < [HCO 3-] < 300 ppm
Conductivity < 500 μS/cm
Chloride (Cl -) < 50 ppm
Phosphate (PO4 3-) < 2 ppm
Ammonia (NH3) < 0.5 ppm
Free chlorine < 0.5 ppm
Trivalent iron ions (Fe 3+) < 0.5 ppm
Manganese ions (Mn 2+) < 0.05 ppm
Carbon dioxide (CO2) < 10 ppm
Hydrogen sulfide (H2S) < 50 ppm
Content of oxygen < 0.1 ppm
Algae growth impermissible
Suspended solids impermissible

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Operating instructions
3. Safety notes for the user
3.1. Explanation of safety notes
In addition to the safety warnings listed, warnings are posted throughout the
operating manual. These warnings are designated by an exclamation mark
inside an equilateral triangle. “Warning of a dangerous situation (Attention!
Please follow the documentation).”
The danger is classified using a signal word.
Read and follow these important instructions for averting dangers.
Warning:
Describes a possibly highly dangerous situation. If these instructions are not
followed, serious injury and danger to life could result.
Caution:
Describes a possibly dangerous situation. If this is not avoided, slight or minor
injuries could result. A warning of possible property damage may also be
contained in the text.
Notice:
Describes a possibly harmful situation. If this is not avoided, the product or
anything in its surroundings can be damaged.
3.2. Explanation of other notes
Note!
Draws attention to something special.
Important!
Indicates usage tips and other useful information.
This icon is used in the operating instructions to indicate flashing values or
parameters which have to be set or confirmed.
3.3. Safety recommendations
Follow the safety instructions to avoid personal injury and property damage.
Also, the valid safety instructions for workplaces must be followed.
•Only connect the unit to a power socket with an earthing contact (PE –
protective earth)!
•The power supply plug serves as a safe disconnecting device from the line
and must always be easily accessible.
•Place the unit on an even surface on a base made of nonflammable
material.

Safety notes for the user
16
•Do not stay in the area below the unit.
•Make sure you read and understand all instructions and safety precautions
listed in this manual before installing or operating your unit.
•Set the excess temperature safety installation at least 25 °C below the fire
point of the bath fluid.
•Observe the limited working temperature range when using plastic bath
tanks.
•Never operate the unit without bath fluid in the bath.
•Pay attention to the thermal expansion of bath oil during heating to avoid
overflowing of the fluid.
•Prevent water from entering the hot bath oil.
•Do not drain the bath fluid while it is hot!
Check the temperature of the bath fluid prior to draining (e.g., by switching
the unit on for a short moment).
•Use suitable connecting tubing.
•Avoid sharp bends in the tubing, and maintain a sufficient distance from
surrounding walls.
•Make sure that the tubing is securely attached.
•Regularly check the tubing for material defects (e.g., for cracks).
•Never operate damaged or leaking units.
•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 turn off the unit and disconnect the mains cable from the power
source before cleaning the unit.
•Always empty the bath before moving the unit.
•Transport the unit with care.
•Sudden jolts or drops may cause damage in the interior of the unit.
•Observe all warning labels.
•Never remove warning labels.
•Never operate units with damaged mains power cables.
•Repairs are to be carried out only by qualified service personnel.
Some parts of the bath tank and the pump connections may become
extremely hot during continuous operation. Therefore, exercise particular
caution when touching these parts.
Caution:
The temperature controlling i.e. of fluids in a reactor constitutes normal
circulator practice.
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

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The user alone is responsible for the handling of these substances!
The following questions shall help to recognize possible dangers and to reduce
the risks to a minimum.
•Are all tubes and electrical cables connected and installed?
Note:
sharp edges, hot surfaces in operation, moving machine parts, etc.
•Do dangerous steams or gases arise when heating?
Is an exhaust needed when working?
•What to do when a dangerous substance was spilled on or in the unit?
Before starting to work, obtain information concerning the substance and
determine the method of decontamination.
Notice: Check the safety installations at least twice a year!
•Excess temperature protection according to IEC 61010-2-010.
With a screwdriver turn back the adjustable excess temperature protection
until the shut-down point (actual temperature).
•Low level protection according to IEC 61010-2-010.
To check the function of the float, it can be manually lowered with a
screwdriver for example.
WARNING
This product contains chemicals known to the state of California to cause
cancer, birth defects or other reproductive harm.

Operating controls and functional elements
18
4. Operating controls and functional elements
4.1. Circulator
Front view Rear view
1 Mains power switch, illuminated
Navigation keys
2
1. Key: >OK< Start / Stop (pump / heater )
2. >OK< in the menu Menu item / select submenu for setting
Save set value
Save selected parameter
A beep signals the end of setting
After the actions Start, Stop and change from VFD Display to
standard display the key is locked for a short time.
The above graph “front side” shows an example for standard display.
3 1. Key: >Return< Stop (pump / heater )
2. >Return< in the menu one menu level down
Correction function for parameters or values (prior to OK)
immediately back to standard display
- icon for „keep key pressed down“.

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4 1. Key: >Up / Down <temperature – increase/decrease setpoint
Push key quickly for single steps,
Keep key pressed for fast change.
2. >Up/Down< in the menu selection of menu items / parameters
Navigation aids
Flashing segments show the position
within the structure of the menu.
Item „P“ flashes simultaneously in the
submenu.
Menu keys
5 Key: start the menu > warning and safety values<
6 Key: start the menu >temperature setpoints<
7 Key: display of MENU structure
10 MULTI-DISPLAY (LED) temperature indication, menu indication
11 Control indicator –Heating
12 Control indicator – Cooling (without function)
13 Control indicator – Alarm
14
Adjustable excess temperature protection according to IEC 61010-
2-010
15
Socket: control cable of JULABO refrigerated circulator
or output for alarm messages
16
RS232
Interface RS232: remote control via personal computer
18 Mains circuit breakers (resettable) 15 A
20
Mains power cable with plug

Operating controls and functional elements
20
4.2. Cooling Machine
Front view Rear view Rear view FPW
1b Mains power switch, illuminated for cooling machine
15a
15b
Socket: control cable of JULABO refrigerated circulator
18b Mains fuses for cooling machine, T10A, D5 x 20 mm
20a
20b
Mains power cable with plug for circulator
Mains power cable with plug cooling machine
21 Built-in mains outlet for connection of circulator
22
Drain tap
23
Drain port
24a
24b
Pump connector: feed
Pump connector: return
25 Venting grid, removable
26
Only water cooled models:
Cooling water OUTLET and INLET. ¾"
27
Selector dial for cooling machine (only F25, F34)
Position "1" for operation with ME circulator.