xxxxx - John Morris Scientific

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Operating Manual
Forcing Test
Refrigerated/Heating Circulating Bath
F38-ME
ME
F38
Innovative Temperature Technology
Printed in Germany
Changes without prior notification reserved
1.951.0540 BE4 01/07
JULABO Labortechnik GmbH
77960 Seelbach / Germany
+49 (0) 7823 / 51-0
+49 (0) 7823 / 24 91
info@julabo.de
www.julabo.de
19510540.doc 30.01.07

Content
Page
Operating manual 2 ... 11
Operating instructions 12 ... 66
The easy way to the Forcing Test page 43
Notice:
This abbreviated version does not release the user from the duty to instruct the operating
personnel on the work with this unit and particulary to point out to possible dangers.
For the general use in the laboratory the refrigerated and heating circulator F38-ME offers
a lot of setting possibilities, which are not necessary for doing a „Forcing Test“.
In the chapter „The easy way to the Forcing Test“ the advices for the necessary settings
are summarised.
Advices which are particularly important for doing a forcing test, are marked with
the symbol of a bottle (see left side).
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.
Quality Management System
ISO 9001
2000
c e
W e
r
t
i
a
f
r e
i e d
Unpacking and checking
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 9001:2000.
Certificate Registration No. 01 100044846
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.
2

F38-ME
TABLE OF CONTENTS
Operating manual................................................................................................................ 5
Description........................................................................................................................ 5
Operator responsibility – Safety recommendations ........................................................... 6
EC Conformity................................................................................................................... 8
Warranty conditions .......................................................................................................... 9
Technical specifications .................................................................................................. 10
Operating instructions ....................................................................................................... 12
1. Operating controls and functional elements ................................................................ 12
2. Safety notes for the user............................................................................................. 14
3. Preparations ............................................................................................................... 14
3.1. Installation.............................................................................................................. 14
3.2. Bath fluids .............................................................................................................. 15
3.3. Filling / draining...................................................................................................... 16
3.3.1. External control............................................................................................. 17
4. Operating procedures................................................................................................. 17
4.1. Power connection................................................................................................... 17
4.2. Switching on / Start - Stop...................................................................................... 18
5. Setting the temperatures .................................................................................. 20
6. Safety installations, warning functions............................................................... 21
6.1. Excess temperature protection............................................................................... 21
6.1.1. Early warning system, low level protection.................................................... 22
6.2. Over and Sub temperature warning functions ........................................................ 23
6.2.1. Change-over of the warning function to shutdown function ........................... 24
7. Menu functions.................................................................................................. 25
7.1. MENU PUMP - Setting the pump pressure............................................................. 27
7.2. MENU CONTROL – Control parameters................................................................ 28
7.2.1. CONTROL – internal / external control.......................................................... 28
7.2.2. DYN INT - Dynamic internal.......................................................................... 29
7.2.3. Control parameters – XP, TN, TV internal..................................................... 30
7.2.4. Control parameters – XPU, XP, TN, TV external........................................... 31
7.3. MENU CONFIG - configuration .............................................................................. 32
7.3.1. SETPOINT – Keypad control or remote control............................................. 32
7.3.2. OFF-MODE – Pump motor on / off................................................................ 33
7.3.3. RESET – Factory settings............................................................................. 33
3

7.3.4. TIME / DATE – setting time and date............................................................ 34
7.4. MENU SERIAL - BAUDRATE, HANDSHAKE, PARITY.......................................... 35
7.5. MENU LIMITS........................................................................................................ 36
7.6. MENU PROGRAM – Integrated programmer / Forcing test.................................... 39
7.6.1. FORCING-Test Program .............................................................................. 39
7.6.2. The easy way to the forcing test ................................................................... 43
7.6.3. STANDARD programmer.............................................................................. 45
7.6.4. Description of the menu-items ...................................................................... 46
7.7. MENU ADJUST – ATC Absolute Temperature Calibration..................................... 49
8. Troubleshooting guide / Error messages .................................................................... 53
9. Safety recommendations............................................................................................ 56
10. Electrical connections................................................................................................. 57
11. Remote control ........................................................................................................... 58
11.1. Setup for remote control......................................................................................... 58
11.2. Communication with a PC or a superordinated data system .................................. 59
11.3. List of commands................................................................................................... 60
11.4. Status messages ................................................................................................... 62
11.5. Error messages...................................................................................................... 63
12. Maintaining the cooling performance .......................................................................... 64
13. JULABO Service – Online remote diagnosis............................................................... 65
14. Cleaning / repairing the unit........................................................................................ 66
4

F38-ME
Operating manual
Description
JULABO circulators have been designed for temperature application to specific fluids in a bath tank.
The F38-ME -Forcing Test Refrigerated/Heating Circulating Bath- is employed in conjunction with a
photometer to determine the "best before" date for bottled beer.
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 VFD COMFORT-DISPLAY. Three menu keys facilitate adjusting
setpoints, warning and safety functions and menu functions.
The integrated programmer allows storing and running temperature and timedependent
processes.
1x10
PID3
ATC 3
RS232
Pt100
SMART
PUMP
The PID cascade 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.
Connection for Pt100 external sensor for external temperature measurement and
control.
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 VFD COMFORT-DISPLAY.
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
shutdown 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.
JULABO circulators 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).
5

Operating manual
Operator responsibility – Safety recommendations
The products of JULABO Labortechnik 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.
Persons:
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.
When using hazardous materials, the circulator may only be operated by persons that 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 Labortechnik GmbH
Eisenbahnstrasse 45
D-77960 Seelbach / Germany
+49 7823 51-0
+49 7823 2491
info@julabo.de
www.julabo.de
Handling:
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.
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.
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. The summarized user guidance (short manual) and the specification table with
information on individual parameters are sufficient for this.
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
6

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 bath fluids..
F38-ME
When using hazardous materials, the user must attach the enclosed safety labels to the front of the
unit so they are well visible: The yellow warning label W09 (danger area) and the blue mandatory label
M018 or Semi S1-0701 Table A1-2 #9 (Carefully read the user information prior to beginning
operation).
Warning label W09:
Colours:
yellow, black
Danger area.
Attention! Observe instructions.
(operating manual, safety data sheet)
Mandatory label M018
Colours: blue, white
Semi S1-0701
Table A1-2 #9
Carefully read the user information prior to beginning
operation
Scope: EU
Carefully read the user information prior to beginning
operation
Scope: NAFTA
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:
Colours: 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.
Disposal:
The circulator contains a so-called back-up battery that supplies voltage to memory chips when the
unit is switched off. Do not dispose of the battery in domestic 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.
This unit contains the refrigerants R404A – 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.
Valid in EU countries
Directive 2002/96/EC of the European Parliament and of the Council of 27 January
2003 on waste electrical and electronic equipment (WEEE).
This directive requires electrical and electronic equipment marked with a crossedout
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!
7

Operating manual
EC Conformity
The product described in the operating instructions conforms 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 Labortechnik GmbH
Eisenbahnstr. 45
77960 Seelbach / Germany
8

F38-ME
Warranty conditions
JULABO Labortechnik 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
Labortechnik GmbH’s original invoice.
JULABO Labortechnik 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.
9

Operating manual
Technical specifications
F38-ME
Working temperature range °C -38 ... 80
Temperature stability °C ±0,05
Temperature selection
digital
via keypad
indication on VFD COMFORT-DISPLAY
remote control via personal computer indication on monitor
Temperature indication
VFD COMFORT-DISPLAY
Resolution °C 0.1
ATC 3 - Absolute Temperature Calibration °C ±3
Temperature control
PID
Heater wattage (at 230 V) kW 2,0
Cooling capacity °C 20 0 -20
(Medium Ethanol) W 920 660 320
Medium ethanol
R404A
Electronically adj. pump capacity stages 1 ... 4
Flow rate l/min at 0 bar 11 ... 16
Pressure max. bar at 0 liter 0,23 ... 0,45
Electrical connections:
External alarm device Vdc 24-0 / max. 25mA
Computer interface
RS232
External sensor
Pt100
Overall dimensions (WxDxH) cm 44x64x82
Bath opening (WxL) cm 35x41
Bath depth cm 27
Filling volume liters 45
Weight kg 80
Ambient temperature °C 5 ... 40
Mains power connection (230 V / 50 Hz) V/ Hz 207 ... 253/ 50
Current input at (at 230 V) A 14
Mains power connection (230 V / 60 Hz) V/ Hz 207 ... 253/ 60
Current input at (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.
10

F38-ME
Safety installations according to IEC 61010-2-010:
Excess temperature protection adjustable from 0 °C ... 320 °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 >25 °C
Alarm message
optical + audible (permanent)
Warning message
optical + audible (in intervals)
Environmental conditions according to IEC 61 010-1:
Use only indoor.
Altitude up to 2000 m - normal zero.
Ambient temperature: +5 ... +40 °C (for storage and transportation)
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
Protection class according to IEC 60 529 IP21
Power supply: corresponds to Class I; according to VDE 0106 T1
not for use in explosive atmosphere
Max. mains fluctuation of ±10 % are permissible.
Overvoltage category
II
Pollution degree 2
Standards for interference resistance EN 61326
Emitted interferences
The unit adheres to the threshold values for emitted interferences
according to table 3.
Interference resistance
The unit conforms to the requirements according to table B.1.
11

40
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Operating instructions
Operating instructions
1. Operating controls and functional elements
Front view
ME
1a
14
Rear view
16
17
18a
15a
21a
15
F38
1a
22
25
26a
15b
20
18b
21b
26b
1a
1b
Mains power switch, illuminated
Mains power switch, illuminated
for circulator
for cooling machine
2 Start / stop key
3 Key for selecting the working temperature - Setpoint 1, 2, 3
4 Key for selecting the warning and safety values
5 MENU button - for selecting the menu functions
6 Cursor keys (left or right)
7 Edit keys (increase or decrease)
7 Enter key 1) Store value / parameter
2) Next lower menu level
8 Escape key 1. Cancel entries
2. Return to a higher menu level
12

F38-ME
10 VFD COMFORT-DISPLAY
Header: Control indicators see sections 11 and 12
Line 1: Actual value internal or external
The display is depending on the selected control mode in the
menu > Control < (internal or external).
Line 2: Working temp. setpoint, constantly S xxx.xx
Line 3: Actual value (E = external or I = internal)
Alternating with the display in line 1
11 Control indicators in the header:
Heating / Cooling / Alarm /
Remote control
12 Control indicators in the header:
Temperature indication Internal or External actual value
Temperature indication in °C (°F not possible on this unit)
13
Display for the adjusted pump pressure stage
Four stages, adjustable via the
button, in the menu >PUMP

Safety notes for the user
2. Safety notes for the user
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. „Warning of a dangerous situation (Attention ! Please follow the documentation).“
The danger is described according to an alarm keyword.
Read and follow these important instructions.
Warning:
Describes a possibly highly dangerous situation. If this is not avoided, 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 damage can 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. Preparations
3.1. Installation
Place the unit on an even surface on a pad made of non-flammable material.
Using the castors move the unit to the intended location.
The place of installation should be large enough and provide sufficient air
ventilation to ensure the room does not warm up excessively because of the
heat the instrument radiates to the environment. (Max. permissible ambient
temperature: 40 °C).
With regard to a disturbance in the cooling loop (leakage), the guideline EN 378
prescribes a certain room space to be available for each kg of refrigerant.
The necessary amount of refrigerant is specified on the type plate.
> For 0.48 kg of refrigerant R404A, a room space of 1 m 3 is required.
F38-ME: The circulator fitted with a stainless steel bridge is placed on on the
back of the bath tank leaving the bath open on the front side.
Keep at least 20 cm of open space on the front and rear venting grids.
Do not set up the unit in the immediate vicinity of heat sources and do not
expose to sun light
Before operating the unit after transport, wait about one hour after setting it up.
This will allow any oil that has accumulated laterally during transport to flow
back down thus ensuring maximum cooling performance of the compressor.
14

F38-ME
3.2. Bath fluids
Caution:
Carefully read the safety data sheet of the bath fluid used, particularly with regard to
the fire point!
If a bath fluid with a fire point of 65 °C is used, only supervised operation is possible.
Water:
The quality of water depends on local conditions.
Ferrous water can cause corrosion - even on stainless steel.
Chloric water can cause pitting corrosion.
Recommended bath fluids:
Bath fluids
Temperature range
water 5 °C ... 80 °C
mixture water/glycol -30 °C ... 65 °C mixing ratio according to manufacturer's
specifications
Thermal G** -30 °C ... 80 °C
** suitable for the forcing test
Order No. Description
8940124 Thermal G 10 liters
8940125 Thermal G 5 liters
Notice:
Please contact JULABO before using other than recommended bath fluids.
JULABO takes no responsibility for damages caused by the selection of an unsuitable
bath fluid.
Unsuitable bath fluids are liquids which e.g.
are very highly viscous
(much higher than 50 mm 2 /s [50 cSt] at the respective working temperature)
have corrosive characteristics or
tend to cracking.
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
The user alone is responsible for the handling of these substances!
15

40
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10
0 15
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23
°C0
Preparations
3.3. Filling / draining
ME
0 mm
Filling
Take care that no liquid enters the interior of the circulator.
By inserting the goods there is a displacement of the bath liquid. This
should be considered when filling the bath tank.
Recommendation for the use as forcing test with 20 beer
bottles:
Filling level below
the tank rim: 46 63 80 97 [mm]
when using 5 10 15 20 bottles
Fill the bath tank according to the table (e.g. Thermal G).
Put the stainless steel insert cage with the beer bottles into the
bath tank. Then the filling height should be approx. 25 mm
below the bath rim.
Limit value:
Recommended filling level with water as bath fluid:
max. 25 mm below the tank rim
min. 70 mm below the tank rim (WARNING >CODE 40

F38-ME
Notice:
Pay attention to the thermal expansion of bath fluid during heating to avoid
overflowing of the liquid.
Exercise caution when emptying hot bath fluids!
Check the temperature of the bath fluid prior to draining (by switching the unit on for
a short moment, for example).
Store and dispose the used bath fluid according to the laws for environmental
protection.
3.3.1. External control
The circulator is intended for internal and external temperature control.
Switching is carried out in the submenu >Control< (see page 28)
Pt100
IMPORTANT: Measures for external control
For external control and temperature measurement an external
Pt100 sensor must be connected to the socket (17) on the rear of the
circulator.
Order No. Description Material cable
8 981 003 200 x 6 mm dia., stainless steel 1.5 m
8 981 005 200 x 6 mm dia., glass 1.5 m
8 981 006 20 x 2 mm dia., stainless steel 1.5 m
8 981 010 300 x 6 mm dia., stainless steel 1.5 m
8 981 013 600 x 6 mm dia., stainless steel/Teflon 3 m
8 981 014 1200 x 6 mm dia., stainless steel/Teflon 3 m
4. Operating procedures
4.1. Power connection
Caution:
Only connect the unit to a power socket with earthing contact (PE – protective earth)!
We disclaim all liability for damage caused by incorrect line voltages!
Check to make sure that the line voltage matches the supply voltage
specified on the identification plate. Deviations of ±10 % are permissible.
Connect the circulator with mains power cable (21a) to the mains
outlet (20).
Connect the control cable (15) between the connectors (15a, 15b).
Connect the refrigerated circulator with mains power cable (21b) to the
mains socket.
17

Operating procedures
4.2. Switching on / Start - Stop
Switching on:
Circulator and cooling machine may be turned on and off with
separate mains switches. The integrated control light will illuminate
to indicate that power has beeen applied.
ttECH
V2-xx
MEF xxx
-OFF-
S 150.0
I 24.6
The unit performs a self-test.
Then the software version (example: V 2.xx) appears. The display
„OFF“ or „R OFF“ indicates the unit is ready to operate.
The circulator enters the operating mode activated before switching
the circulator off:
keypad control mode (manual operation)
or
remote control mode (operation via personal computer).
Start: Press the start/stop key .
The actual bath temperature is displayed on the VFD COMFORT-
DISPLAY. The circulating pump starts with a slight delay.
Stop: Press the start/stop key .
The VFD COMFORT-DISPLAY indicates the message „OFF“.
Control of the cooling machine:
With the mains switch (1b) turned on, the circulator automatically
switches the cooling machine off and on.
It is switched on, if:
- cooling is necessary for maintaining the bath temperature.
After switch-off, the cooling machine automatically switches on only
after a delay of 5 minutes for protecting the cooling compressor.
To save energy, turn off the cooling machine with the mains switch
(1b) whenever cooling is not required.
18

F38-ME
AUTOSTART ON / OFF
Keep depressed enter and the start/stop key
and turn on the circulator with the mains power switch.
For a short while the VFD COMFORT-DISPLAY indicates the effective
start mode:
AUTOSTART on
AUTOSTART off
Note:
The temperature system has been configured and supplied by JULABO
according to N.A.M.U.R. recommendations. This means for the start
mode, that the unit must enter a safe operating state after a power
failure (non-automatic start mode). This safe operating state is indicated
by OFF, resp. R OFF on the VFD COMFORT-DISPLAY. A complete
shutdown of the main functional elements such as heater and circulating
pump is effected simultaneously.
The values set on the circulator remain stored, and the unit is returned to
operation by pressing the start/stop key (in manual control mode).
In remote control mode, the values need to be resent by the PC via the
interface.
Should such a safety standard not be required, the AUTOSTART
function (automatic start mode) may be activated, thus allowing the start
of the instrument directly by pressing the mains power switch or using a
timer.
Warning:
For supervised or unsupervised operation with the AUTOSTART function, avoid any
hazardous situation to persons or property.
The circulator does no longer conform to N.A.M.U.R. recommendations.
Take care you fully observe the safety and warning functions of the circulator.
19

Setting the temperatures
5. Setting the temperatures
Factory settings:
SETP 1 25 °C
SETP 2 37 °C
SETP 3 70 °C
Press the
key to call up the menu for temperature selection.
3 different working temperatures are adjustable. Their values are freely
selectable within the operating temperature range.
This setting may be carried out with the circulator being in the Start or
Stop condition!
Example: Setting working temperature "SETPoint 1"
XXXXX
SETP 1
25.0
1. Press the key until the desired menu window is indicated on the
VFD COMFORT-DISPLAY
Example: SETP 1 / 25.0 °C (last digit blinks)
2. Change the value to 20 °C.
Use the cursor keys to move left or right on the display until the
numeral you wish to change blinks.
XXXXX
SETP 1
20.0
Use the increase/decrease arrows
numeral (-, 0, 1, 2, 3, ... 9).
see example left: SETP 1 / 20.0.
3. Press enter to store the value.
to change the selected
18.4
S 20.0
E------
In the >Start< condition this value is immediately used for controlling the
working temperature.
The indication on the VFD COMFORT-DISPLAY is updated.
The heater control indicator blinks.
Notice: See SETMAX and SETMIN in chapter 7.5.
Example: Selecting the working temperature
MENU LIMITS
SETP 1
SETP 2
SETP 3
1. Press the key until the desired menu item is indicated on the VFD
COMFORT-DISPLAY.
2. Press enter .
The circulator uses the new working temperature value for temperature
control.
20

F38-ME
6. Safety installations, warning functions
SAFETMP
OVERTMP
SUBTMP
LIMITSR
Settings for the excess temperature protection > SAFETMP< according to
IEC 61010-2-010 and for the high > OVERTMP< and low> SUBTMP<
temperature warning functions are made in a menu that is called up with the
key .
Menu item > LIMITSR OVERTMP< and >SUBTMP< choose between a
warning message being signalled or a complete shutdown of the main
functional elements such as heater and circulating pump being effected.
6.1. Excess temperature protection
This safety installation is independent of the control circuit. When the
temperature of the bath fluid has reached the safety temperature, a
complete shutdown of the heater and pump is effected.
The alarm is indicated by optical and audible signals (continuous tone)
and on the VFD COMFORT-DISPLAY appears the error message
"ALARM-CODE 14".
XXXXX
ALARM
CODE 14
Setting range: 20 °C ... 320 °C
1. Press the button until the menu item > SAFETMP < is
displayed.
XXX.X
SAFETMP
70
40
0
100
150
230
°C
2. Set the new cut-out value using a screwdriver via the VFD
COMFORT-DISPLAY (Example: 70 °C)
3. Press to update the display immediately, or the unit
automatically returns to the effective display after
about 30 seconds .
Recommendation:
Set the excess temperature protection at 5 to 10 °C above the working
temperature setpoint.
Notice:
On the forcing test avoid an alarm CODE 14.
The program is cancelled. On the restart the count of the cycles (CYCLE)
restarts from zero.
>SAFETMP< einstellen auf 70 °C
Warning:
The excess temperature protection >SafeTemp< should be set at least 25 °C below
the fire point of the bath fluid used.
In the event of wrong setting there is a fire hazard!
We disclaim all liability for damage caused by wrong settings!
21

Safety installations, warning functions
6.1.1. Early warning system, low level protection
(patented)
This low level protection is independent of the control circuit and is
divided in two sections.
1. Switch in stage 1 recognizes a critical fluid level .
An audible warning (interval tone) sounds and a message
appears on the VFD COMFORT-DISPLAY.
>LOW LEVEL WARNING – FILL MEDIUM<
XXXXX
WARNING
CODE 40
Refill bath fluid!
2. Switch in stage 2 recognizes a low fluid level .
If stage 2 of the low level protection device (according to IEC
61010-2-010) is triggered, a complete shutdown of the heater
and circulating pump is effected.
A continuous alarm tone sounds and a message >ALARM<
>CODE 01< appears on the VFD COMFORT-DISPLAY.
XXXXX
ALARM
CODE 1
Turn off the unit with the mains switch, refill bath fluid and turn
the unit on again!
3. Float
4. Circulating pump
5. Heater
Important: Check the safety installations from time to time.
See page 56
Notice:
On the forcing test avoid a low level alarm CODE 1.
The program is cancelled. On the restart the count of the cycles (CYCLE)
restarts from zero.
Refill the bath liquid in time!
Warning:
For refill always use the same bath fluid type that is already in the bath.
Bath oils must not contain any water contaminants and should be pre-heated to the
actual bath temperature! Explosion hazard at higher temperatures!
22

F38-ME
6.2. Over and Sub temperature warning functions
Over temperature
XXXXX
OVERTMP
85.0
Sub temperature
XXXXX
SUBTMP
-45.0
Factory settings:
OVERTEMP 85,0 °C
SUBTEMP -45,0 °C
Recommendation:
If for a sensitive temperature application task adherence to a working
temperature value > SETP < is to be supervised, then set over and sub
temperature warning values.
In the example below, the > SETP < of 60 °C is surrounded by the values
> OVERTEMP < 65 °C and > SUBTEMP < 55 °C. The electronics
immediately registers when the actual temperature attains a temperature out
of the limits and it follows a reaction according to what is set in the menu
item >LIMITSR OVERTMP < or
>SUBTMP< is displayed.
Settings of the
forcing test
OVERTEMP 65,0 °C
SUBTEMP -5,0 °C
2. Set value:
Use the cursor keys to move left or right on the display until the
numeral you wish to change blinks.
Use the increase/decrease arrows to change the selected
numeral (-, 0, 1, 2, 3, ... 9).
3. Press enter to store the value.
The warning functions are only triggered when the actual bath
temperature, after start from the „OFF“ or „rOFF“ mode, lies within the
set limits for 3 seconds.
Recommendation::
Set the high temperature warning value > OVERTMP < at 5 °C to 10 °C
above the working temperature setpoint.
Set the low temperature warning value > SUBTMP < at 5 °C to 10 °C below
the working temperature setpoint.
23

Safety installations, warning functions
6.2.1. Change-over of the warning function to shutdown function
For the two menu items > OVERTMP< and >SUBTMP< choose between a
warning message being signalled or a complete shutdown of the main
functional elements such as heater and circulating pump being effected (see
page 23).
Factory setting:
>WARNING<
Setting >WARNING<
An audible warning (interval tone) sounds and a meassage appears on
the VFD COMFORT-DISPLAY.
XXXXX
WARNING
CODE 03
OVERTMP
or
XXXXX
WARNING
CODE 04
SUBTMP
Setting >ALARM<
A complete shutdown of heater and circulating pump is effected.
An audible alarm (continuous tone) sounds and a message appears on
the VFD COMFORT-DISPLAY.
XXXXX
ALARM
CODE 03
OVERTMP
oer
XXXXX
ALARM
CODE 04
SUBTMP
1. Press the button until the menu item >LIMITSR< is displayed.
2. Select the parameter with the keys .
(>WARNING< or >ALARM

F38-ME
7. Menu functions
The term „menu functions“ refers to adjustments such as
PUMP electronically adjustable pump capacity page 27
CONTROL PID Cascade Control, control parameters page 28
CONTROL - internal or external control
DYNAMIC - internal
Control parameters - XP, TN, TV internal
Control parameters - XP, TN, TV, XPU external
CONFIG Configurationen of the unit page 32
SET (Setpoint) – keypad control or remote control
OFF MODE – Motor on / off
RESET – Factory settings
TIME / DATE – Setting time and date
SERIAL Adjustable interface parameters page 35
BAUDRAT, H-SHAKE, PARITY
(Baud rate, Handshake, Parity)
LIMITS Limits to temperature or capacity page 36
SET MAX / MIN - Maximum and minimum setpoint
HEAT MAX - Adjusted maximum heating
COOL MAX - Adjusted maximum cooling
INTERN MAX / MIN – Limitation of the working temperature range
BAND HIGH / LOW – Band limit
PROGRAM Integrated programmer / Forcing test page 39
ADJUST ATC - Absolute Temperature Calibration, page 49
Sensor calibration, 3-point calibration
25

Menu functions
Example:
Menu level 1
Menu level 1:
Press the button to scroll in menu level 1.
If the desired () menu item is indicated on the VFD COMFORT-
DISPLAY, press enter to change to menu level 2.
Menu level 2:
Press the button to scroll in the selected menu item, line 3 of the
display blinks.
If a value is set or a parameter selected, press enter to confirm.
Each input can be cancelled with the
the next higher menu level.
. The cursor then returns to
Legend:
Continue: Press
/ or
The display remains visible for approx. 30 seconds
within this period,
or press the button to scroll in the menu level
or press to return to the next higher menu level.
. Start to set a value
26

F38-ME
7.1. MENU PUMP - Setting the pump pressure
The pressure of the circulating pump is adjustable in four stages. After
setting, the VFD COMFORT-DISPLAY indicates the corresponding value.
Adjustable pump capacity stage 1 ... 4
Illuminated display:
Flow rate:
Pump pressure:
for pump pressure
11 ... 16 l/min
0.22 ... 0.45 bar
Factory setting:
Stufe 4
1. Press the button until the menu item > MENU / PUMP < is
displayed.
2. Press enter to indicate the parameter.
3. Select the parameter with the keys (1 ... 4).
4. Press enter to store the selected parameter.
Continue: Press or .
2
1
The pump flow is pre-adjusted in the factory and can be modified to
suit user requirements.
Using a screwdriver turn the screw (1) anti-clockwise by 360 °.
Using flat pliers turn the marking of the slide (2) to the desired
position.
Tighten the screw.
Examples:
Internal applications in the bath
A
B
100 % internal bath circulation
(for large bath tanks)
Reduced internal bath circulation
(for smooth surface of bath fluid)
27

Menu functions
7.2. MENU CONTROL – Control parameters
CONTROL: Press enter to switch to menu level 2
>CONTROL< (INT / EXT )
>DYNINT<
(APER / NORM)
>XP INT< (0.1 ... 99.9)
>TN INT< (1 ... 9999)
or
>TV INT< (0 ... 999)
>CONTROL<
( INT / EXT)
>XP EXT< (0.1 ... 99.9)
>TN EXT< (1 ... 9999)
> TV EXT (0 ... 999)
>XPU EXT< (0.1 ... 99.9)
7.2.1. CONTROL – internal / external control
The circulator is conceived for internal and external temperature control.
Switching is carried out in this submenu. Depending on what is set, only
the respective set of parameters is indicated.
Possible parameters:
INT internal temperature control
EXT
external temperature control with external Pt100 sensor
Setting for the forcing test
INT
Factory setting:
INT
The control type can only be adjusted in the -OFF- condition
1. Press the button until the submenu >CONTROL< is displayed.
2. Select the parameter with the keys (INT / EXT).
3. Press enter to store the selected parameter.
Continue: Press
or
28

F38-ME
Pt100
IMPORTANT:
Additional measures for external temperature control.
Connect a Pt100 sensor to the socket on the rear of the circulator.
Suggested adjustments for external temperature control:
BAND HIGH / LOW and INTERN MAX / MIN
see chapter > LIMITS < on page 36.
Sensor calibration of the external Pt100 sensor is carried out in the >MENU /
ADJUSTATC SEN / EXT< (see page 49).
Notice:
Place the external sensor into the bath medium and securely fix the sensor.
7.2.2. DYN INT - Dynamic internal
This parameter affects the temperature pattern only in
case of internal control.
Factory setting: APER (aperiodic)
NORM
°C
temp. stability
APER
Setpoint
NORM
°C
temp. stability
APER
temperature ramp
t
t
Possible parameters:
NORM
APER
Allows for reaching the setpoint faster, but
overshooting of up to 5 % is possible.
Target temperature is attained without
overshooting.
With both adjustments an adequate temperature
stability is reached after approximately the same time.
1. Press the button until the submenu > DYN INT < is displayed.
2. Select the parameter with the keys .
(NORM / APER)
3. Press enter to store the selected parameter.
Continue: Press
or
29

Menu functions
7.2.3. Control parameters – XP, TN, TV internal
The control parameters preset in factory are in most cases adequate for
achieving an optimum temperature pattern for the samples requiring
temperature application.
Each parameter may be manually set via the keypad if necessary, to
allow optimum control performance.
Proportional range >Xp<
The proportional range is the range below the selected temperature value
in which the control circuit reduces the heating power from 100 % to 0 %.
Setting range:
0.1 ... 99.9
Setting range:
1 ...9999
Setting range:
0 ... 999
Resetting time >Tn< (Integral component)
Compensation of the remaining control deviation due to proportional
regulation. An insufficient resetting time may cause instabilities to occur.
Excessive resetting time will unnecessarily prolong compensation of the
control difference.
Lead time >Tv< (Differential component)
The differential component reduces the control settling time. An
insufficient lead time will prolong the time required to compensate for
disturbance effects and cause high overshooting during run-up. An
excessive lead time could cause instabilities (oscillations) to occur.
1. Press the button until the desired submenu is displayed -
XP INT, TN INT, TV INT.
2. Set value:
Use the cursor keys to move left or right on the display until
the numeral you wish to change blinks.
Use the increase/decrease arrows
numeral (-, 0, 1, 2, 3, ... 9).
to change the selected
3. Press enter to store the value.
Continue: Press / or
Optimization instructions for the PID control parameters: (internal and external)
°C
optimum setting
The heat-up curve reveals inappropriate control
settings.
t
30

F38-ME
Inappropriate settings may produce the following heat-up curves:
Xp too low
Tv/Tn too low
°C
°C
°C
t
Xp too high or Tv too high
°C
t
Tv/Tn too high or Xp too high
t
t
7.2.4. Control parameters – XPU, XP, TN, TV external
The control parameters preset in factory are in most cases adequate for
achieving an optimum temperature pattern for the samples requiring
temperature application.
Each parameter may be manually set via the keypad if necessary, to
allow optimum control performance.
Setting range: 0.1 ... 99.9
1. Press the button until the desired submenu is displayed -
XP EXT, TN EXT, TV EXT, XPU EXT.
2. Set value:
Setting range: 1 ...9999
Use the cursor keys to move left or right on the display until
the numeral you wish to change blinks.
Use the increase/decrease arrows
numeral (-, 0, 1, 2, 3, ... 9).
to change the selected
Setting range: 0 ... 999
3. Press enter to store the value.
Continue: Press / or
Setting range: 0.1 ... 99.9
Proportional range >Xpu<
The proportional range Xpu of the cascaded controller is only needed for
external control.
31

Menu functions
7.3. MENU CONFIG - configuration
CONFIG: Press enter to switch to menu level 2
>SETP< (KEY / SERIAL )
Keypad control or remote control
>OFFMODE<
>RESET<
>TIME<
>DATE<
(PMP OFF / PMP ON)
Motor on / off
( NO / YES ) Factory settings
(hh : mm ) Setting time
(TT/MM.JJ ) Setting date
EPROG* Indication only when electronic module is mounted.
7.3.1. SETPOINT – Keypad control or remote control
Werkseinstellung: KEY
The circulator provides three possibilities for setpoint setting.
KEY - Setpoint setting with the keys and
or the integrated programmer.
SERIAL - Setpoint setting via the serial RS232 interface through a PC
or superordinated data system..
In the header of the VFD COMFORT-DISPLAY an „R“ illuminates. It
indicates that remote control mode is set.
1. Press the button until the submenu > SETP < is displayed.
2. Select the parameter with the keys
(KEY / SERIAL)
3. Press enter to store the selected parameter.
Continue: Press / or
RS232
Important:
Connect the circulator to a PC using an interface cable..
Check the interface parameters of both interfaces (on circulator and
PC) and make sure they match.
(see chapter 11.1. Setup for remote control page 58)
32

F38-ME
7.3.2. OFF-MODE – Pump motor on / off
XXXXX
OFFMODE
PMP OFF
Factory setting:
PMP OFF
Normally the circulating pump is switched via the start/stop signal.
However, if circulation should be maintained also for the -OFF- condition,
the parameter >PMP ON< needs to be set.
Possible parameters:
PMP ON
Pump motor on
PMP OFF
Pump motor off
1. Press the button until the submenu > OFFMOD < is displayed.
2. Select the parameter with the keys .
(PMP ON / PMP OFF)
3. Press enter to store the selected parameter.
Continue: Press / or
In case of an alarm state, a shutdown of the pump motor is still
effected.
7.3.3. RESET – Factory settings
Use this to reset all values to factory setting (except date and time).
A RESET can only be carried out in the -OFF- condition.
Factory setting:
NO
Possible parameters:
NO / YES
1. Press the button until the submenu > RESET < is displayed.
2. Select the parameter with the keys (NO / YES).
3. Press enter to store the selected parameter.
As long as the message -RUN- appears all parameters a reset to
factory settings.
33

Menu functions
7.3.4. TIME / DATE – setting time and date
XXXXX
TIME
16h4317
hh mm
XXXXX
DATE
10/1203
TT/MM.JJ
The integrated clock allows starting a profile at any date and time. The
clock is preset in the factory.
1. Press the button until the submenu > TIME < or > DATE < is
displayed.
2. Setting time / date:
Use the cursor keys to move left or right on the display until
the numeral you wish to change blinks.
Use the increase/decrease arrows
numeral (-, 0, 1, 2, 3, ... 9).
3. Press enter to store the value.
Continue: Press / or
to change the selected
Clock: Only hours and minutes are set.
Settings are checked for plausibility.
34

F38-ME
7.4. MENU SERIAL - BAUDRATE, HANDSHAKE, PARITY
XXXXX
MENU
SERIAL
SERIAL: Press enter to switch to menu level 2
>BAUDRAT<
Factory settings:
4800 Bauds
even
hardware handshake
>PARITY<
>H-SHAKE<
For communication between circulator and a PC or a superordinated
process system the interface parameters of bath units must be identical.
Adjustable interface parameters
BAUDRATE 4800 bauds
9600 bauds
19200 bauds
38400 bauds
PARITY
no
odd
even
HANDSHAKE
SOFT =
HARD =
software handshake
hardware handshake
Data bits = 7; Stop bits = 1
1. Press the button until the desired menu item is displayed.
2. Select the parameter with the keys .
3. Press enter to store the selected parameter.
Continue: Press / or
35

Menu functions
7.5. MENU LIMITS
XXXXX
MENU
LIMITS
LIMITS: Press enter to switch to menu level 2
>SET MAX<
>SET MIN<
>HEATMAX<
>COOLMAX<
>INT MAX<
>INT MIN<
>BAND H<
In case of external control
these menu items are
additionally indicated.
>BAND L<
1. Press the button until the desired submenu is displayed
2. Set value:
Use the cursor keys to move left or right on the display until
the numeral you wish to change blinks.
Use the increase/decrease arrows
numeral (-, 0, 1, 2, 3, ... 9).
to change the selected
3. Press enter to store the value.
Continue: Press / or
36

F38-ME
Factory settings
XXXXX
SET MAX
.80.0
XXXXX
SET MIN
-40.0
SETPOINT MAX / MIN - Maximum and minimum setpoint
Restriction for the adjustable temperature range.
The limitation of the operating temperature range effects the temperature
setting under the menu called up with the key.
It is possible to adjust only working temperatures that lie within the limit
range set here.
Existing settings for SETP 1, 2, 3 and also for >OVERTEMP< and
>SUBTEMP< (see page 23) are automatically defered within the limit
range.
Setting range:: -40,0 °C ... +80,0 °C
Factory settings
Adjusted maximum heating / cooling.
Heating and cooling powers of the circulator are adjustable. 100 %
corresponds to the values in the technical specifications of the
equipment.
Setting range:
HEAT MAX – 0 to 100 % in steps of 1 %
COOLING MAX – 0 to 100 % in steps of 1 %
Factory settings
XXXXX
INT MAX
.80.0
XXXXX
INT MIN
-40.0
> SAFETMP <
INTERNAL MAX / MIN
Setting range: -40,0 °C ... +80,0 °C
Limit setting
The limits INT MAX and INT MIN are only valid for external control. INT
MAX and INT MIN are used to limit the expected internal bath
temperatures to any upper and lower values. The temperature controller
cannot exceed these limits even if it would be required for reaching the
temperature in the external system. Consequently the external setpoint
may thus not be reached.
Sense of a limit setting:
Protects the bath fluid from overheating.
Prevents an undesired alarm shutdown by the excess temperature
protection - >ALARM CODE 14INTMAX:< to a value at least 5 °C below the >SAFETEMP:<
value.
Protects the pump motor from high viscosity of the bath fluid at low
temperatures.
For refrigerated circulators: Freezing protection when using water as
bath fluid.
37

Menu functions
Factory settings:
BAND HIGH / LOW - Band limit
For the heat-up and cool-down phases different settings to conform to
the requirements of the particular application are possible.
Setting range: 0 ... 200 °C
Using BAND HIGH and BAND LOW, the difference between the
temperatures in the internal bath and the external system can be limited
to any maximum value for the heat-up or the cool-down phase.
During the heat-up phase the difference value always adds to the actual
external temperature. During the cool-down phase, the difference value
is subtracted.
°C
200
150
100
75
50
25
Internal bath
external system
BAND HIGH
BAND LOW
Sense of a band limit:
Ensures gentle heating for the
objects requiring temperature
application.
Protects glass reactors, for
example, from thermal shock.
The INTMAX: and INTMIN: values are
superordinated to this band limit.
10 20 30 40 50 60 10 20 30 40 50 60 10 [min]
t
38

F38-ME
7.6. MENU PROGRAM – Integrated programmer / Forcing test
In the >MENU PROGRAM< it is possible to choose between the
“standard programmer“ and the „forcing test program“
XXXXX
MENU
PROGRAM
XXXXX
PROGRAM
STANDAR
XXXXX
PROGRAM
FORCIER
PROGRAM: Press enter to switch to menu level 2
With the editing key the indication can be switched over..
>STANDARD<
or
>FORCIER<
Select the desired >PROGRAM< with the Enter key
7.6.1. FORCING-Test Program
XXXXX
PROGRAM
FORCIER
>FORCIER<
>PS GO<
>RUNS<
Start the forcing test
Number of repetitions of the warm/cool phase
(1 ... 10)
Factory setting:
Forcing test 60 °C
>W-TEMP< Temperature of the warm phase (°C)
(Warm-TEMP)
>W-TIME<
Duration of the warm phase (hh:mm)
>C-TEMP<
(Cool-TEMP)
>C-TIME<
Temperature of the cool phase (°C)
Duration of the cool phase (hh:mm)
The most effective determination of the estimated unturbid lifetime of the
beer can be made by using a so-called forcing method. For the warm-cold
treatment of the beer the FORCING test program supplies high temperature
accuracy and exact time slices. At the desired time an acoustic signal
reminds of the measurement of turbidity by means of a device for measuring
turbidity.
39

Menu functions
1. Press the button until the desired submenu is displayed.
(Indication line 3 is flashing)
2. Set value: (RUNS, Temperature value and duration)
Use the cursor keys to move left or right on the display until the
numeral you wish to change blinks.
Use the increase/decrease arrows to change the selected
numeral (-, 0, 1, 2, 3, ... 9).
3. Press enter to store the value
or
PS GO – NOW – starting the forcing test
Continue: Press / or
XXXXX
PS GO
NOW
XXXXX
RUNS
1
XXXXX
W-TEMP
60.0
XXXXX
W-TIME
24h00
XXXXX
C-TEMP
00.0
XXXXX
C-TIME
24h00
Starting a forcing test
If a program is stored, the forcing test can be started.
1. Press the key until >MENU - PROGRAM<
2. with editing key to >PROGRAM – FORCIER<
3. with key to sub-menu >PS GO - NOW<
Create a forcing test
The factory-set values in the following menu points can be changed in
one‘s sole discretion..
Number of repetitions of the warm/cool phase
>RUNS< Adjustable 1 .... 10
Example: RUNS 5
The warm/cool phase will run through 5 times successively.
The number of repetitions (RUNS) form one measuring cycle (CYCLE).
Temperature of the warm phase (Warm-TEMP)
Adjustable from –40 °C up to +80 °C
Duration of the warm phase (Warm-TIME)
Adjustable max.. 999 h 5 9 minutes
Temperature of the cool phase (Cool-TEMP)
Adjustable from –40 °C up to +80 °C
Duration of the cool phase (Cool-TIME)
Adjsutable max. 999 h 59 minutes
40

F38-ME
Program sequence:
Example forcing test 60 °C
As factory-setting the „Forcing Test 60 °C“ is stored
Measuring cycle: RUNS 1 repetition
Warm phase W-TEMP 60 °C
Duration W-TIME 24 h
Cool phase C-TEMP 0 °C
Duration C-TIME 24 h
In the course of the program the VFD-DISPLAY shows messages concerning
the process of the forcing test in line 2 and 3.
In line 3 two messages are shown alternately.
Message 1 always indicates the program status (phase of the forcing test),
message 2 indicates the status >RUN< (Test runs).
Message 2 can be changed by the editing keys .The remaining time of
a phase or >E ------< can still be chosen.
(Message >E ------

Menu functions
XXXXX
PS GO
NOW
15.9
S 20.0
STARTUP
15.9
S 20.0
RUN
19.9
S 20.0
STARTUP
20.5
S 60.0
WARM 1
60.0
S 0.0
COOL 1
0.9
S 20.0
WARMUP
S 20.0
MEASURE
S 60.0
RUN
21.5
S 60.0
23h58.23
S 0.0
RUN
21.5
S 0.0
23h58.23
S 20.0
RUN
2. Start forcing test (see page 40)
Beginning of the STARTUP-phase
First the circulators tempers to the measuring temperature.
Line 2: S 20.0 (SETP 1) is shown (Example: 20.0 °C)
Message 1 >STARTUPRUN< or >00h00.00STARTUPMEASURE<
Additionally the signal tone sounds, which asks for the first measuring
in order to enter the start value.
4. Press the start/stop key . Beginning of the warm phase.
Line 2: S 60.0 (W-TEMP) is shown (Example: 60 °C)
Message 1 >WARM 1RUN< or >23h58.23W-TIME< is counted to zero
5. The time >W-TIME< is over. Direct beginning of the cool phase
Line 2: S 0.0 ( C-TEMP) is shown (Example: 0.0 °C)
Message 1 >COOL 1RUN< oder >23h58.23C-TIME< is counted to zero.
6. The time >C-TIME< is over.
Direct beginning of the WARMUP-
Line 2: S 20.0 (SETP 1) is shown (Example: 20.0 °C)
Message 1 >WARMUP RUN< or
(Time of the WARMUP -Phase is not defined.)
>00h00.00CYCLE 1MEASURE<
Additionally a signal tone sounds, which asks for measuring
The number of repetitions (RUNS) form one measuring cycle
(CYCLE). In the example the number of >RUNS< has been set to
>1CYCLE 1< is
reached and the demand for measuring is effectd.
8. In order start the second measuring cycle for the example, the start/stopkey
has to be pressed.
The program skips to position 4. Direct beginning of the warm phase.
With each cycle warm phase and cool phase phase are counted up.
42

F38-ME
7.6.2. The easy way to the forcing test
1. Installation see page 14
2. Power connection see picture „Rear view“ page 12
Connect the circulator ME with mains power cable (21a) to the mains
outlet (20).
Connect the control cable (15) between the connectors (15a, 15b).
Connect the refrigerated circulator (F38) with mains power cable
(21b) to the mains socket.
3. Filling / Bath fluid
Fill the bath tank to a third with a water/glycol mixture.
(Filling: see page 16)
(mixing ratio according to manufacturer's specifications, to –5 °C)
4. Insert the the product
Put the stainless steel insert cage with beer bottles into the bath tank
and refill the fluid. Maximum filling height approx. 25 mm under the bath
edge.
5. Put on the bath cover
In order to reduce the loss of fluid due to evaporation of water, in case of
long-term operation.
The circulator ME is provided with an early-warning system for low
level (description page 22), which activates at a filling height of 65-70
mm below the bath edge. For measuring cycles, which last for
several days the liquid level should be peered once a day, in order to
not to endanger the course of the forcing test.
6. Switching on:
Circulator and cooling machine may be turned on and off with separate
mains switches (1a, 1b).
7. Safety installations, warning functions
XXX.X
SAFETMP
70
40
0
100
150
230
°C
Set the following value in the MENU :
Excess temperature protection see page 21
Set >SAFETMP< to 70 °C
43

Menu functions
Over and Sub temperature warning functions see page 23
OVERTMP
65.0 Set >OVERTMP< to 65 °C
SUBTMP
-5.0 Set >SUBTMP< to -5 °C
XXXXX
SETP 1
20.0
8. Setting the test temperature
Select e.g. SETP 1 in the MENU and set 20 °C.
see page 20
9. Start the forcing test
As factory-setting the „Forcing test 60 °C“ is stored
Measuring cycle:RUNS 1 flow (48 h)
Warm phase W-TEMP 60 °C
Duration W-TIME 24 h
Cool phase C-TEMP 0 °C
Duration C-TIME 24 h
XXXXX
MENU
PROGRAM
XXXXX
PROGRAM
FORCIER
XXXXX
PS GO
NOW
Setting of other values see page 40 „Create forcing test“
10. Press the key until >MENU - PROGRAM< press
11. With editing key to >PROGRAM – FORCIER< press
12. With key to sub menu >PS GO - NOW< press
The forcing test is started
13. Program sequence
A program sequence is described from page 41 on.
Notice:
On the forcing test avoid low level alarm CODE 1.
The program is cancelled. On a restart the count of the cycles (CYCLE)
restarts from zero.
Refill the bath liquid in time!
44

F38-ME
7.6.3. STANDARD programmer
XXXXX
PROGRAM
STANDAR
>STANDARD<
First create a profile. If the start shall be at a certain moment, then also set
hour (TIME) and day (DATE).
1 Profil
10 Sections (STEP)
99 Repetitions
>PS STEP< Program start at section ....
> PS RUNS < Number of profile repetitions 1 ... 99
> PS GO < Start type (NOW/TIME)
> P TIME < Start time (hh:mm)
>P DATE< Start date (TT/MM.JJ)
>PS END<
Status at the end of the profile (STBY/SETP)
(Standby or last setpoint)
> PE STEP< Edit profile (1 ... 10)
>Px SEP < Target temperature of section ...
>Px TIM< Time period of section ...
>Px DEL<
Delete a section (STEP) (YES/NO)
> PE DEL< Delete a profile (YES/NO)
The integrated programmer allows any desired temperature program
sequences to be realized. Such a temperature sequence is called profile. A
profile consists of individual sections defined by duration (t:) and target
temperature. Target temperature is the setpoint (T:), that is achieved at the
end of a section. The programmer uses time and temperature difference
values within a section to calculate a temperature ramp.
PE STEP (Nr.) 1 2 4 6 8
Px SEP (°C) 50 80 80 50 50
Px TIM (hh.mm) 00:20 00.10 00:20 00:50 00:20
°C
100 Step 1 2 4 6 8
75
50
25
Example
10 20 30 40 50 60 10 20 30 40 50 60 10 [min]
t
45

Menu functions
1. Press the button until the desired submenu is displayed.
2. Set value:
Use the cursor keys to move left or right on the display until the
numeral you wish to change blinks.
Use the increase/decrease arrows to change the selected
numeral (-, 0, 1, 2, 3, ... 9).
or
select the parameter with the keys .
3. Press enter to store the value / parameter
Continue: Press / or
7.6.4. Description of the menu-items
Start-MENU
Starting a profile
The programmer can be started with the following 3 menu items.
Condition:
1. First create a profile (see page 48)
2. Set a starting time (>TIME< >DATEPS STEP< (1 ... 10)
Select the section with which the profile should be started. (STEP) Example:
STEP 1
>PS RUNS< (1 ... 99)
Select the number of profile repetitions. Example: RUNS 10
The profile is repeated 10 times.
>PS GO<
The profile can be started immediately with the parameter (NOW ),
or ( ) at the set time with the parameter (TIME ).
Example page 48: 19 December 2005 14:25 hrs
Indicating during the waiting time until the start:
The advice >TIMER< and the adjusted values for „TIME“ und „DATE“ are
shown alternately in line 3.
46

F38-ME
A
B
C1
C2
D1
D2
XXXXX
S XX.X
STEP X
S XX.X
XXhXXxx
S XX.X
XXhxx
S XX.X
I xxx.x
S XX.X
E xxx.x
S XX.X
RUN
S XX.X
PAUSE
The started programmer
The started programmer indicates the actually calculated setpoint S XX.X in
line 2. This value increases within the time period >Px TIM< until the target
temperature >Px SEP< of the section is reached.
If time in a section is set to „0“, the next section starts only as soon as the
target temperature is reached.
Use the edit keys to scroll in line 3. The display changes in intervals
of approx. 4 seconds between the valid section (STEP X) and
A Remaining time of the valid section or
B Remaining total time: Profile x number of repetitions or
C Actual bath temperature
I xxx.x – internal actual value or
E xxx.x – external actual value
D RUN – the programmer is started or
PAUSE – the profile was interrupted with the key . Time is stopped
and the temperature is maintained constant at the last calculated setpoint
value.
Continue: Press
Interrupting / Termination of a profile
A profile can be terminated by pressing .
Power failure with the programmer started:
– The reaction of the circulator is the same as when switched off and on
again with the mains switch. The VFD COMFORT-DISPLAY indicates
"OFF".
– If the AUTOSTART function is activated, the programmer starts again at
a point approx. 20 seconds before the interruption took place. However,
an uncontrolled change of the bath temperature happened.
XXXXX
TIME
14h25ss
XXXXX
DATE
19/1205
Setting time/date for the start
>TIME<
Enter the start time. Example: 14:25 hrs
>DATE<
Enter the start date. Example: 19 December 2005
Check the setting of the internal real time clock (see page 34).
XXXXX
PS END
SETP
Status at the end of the profile
>PS END< (STBY / SETP)
Set the status for the end of the profile.
With the parameter STandBY the circulator enters the –OFF– state.
With the parameter SETPoint the circulator maintains the temperature at the
value of the last section.
47

Menu functions
Compiling profiles, indicating sections
Example: Section 2
XXXXX
PE STEP
2
XXXXX
P2 SEP
180.0
XXXXX
P2 TIM
00h10
XXXXX
P2 DEL
NO
1 Press the button until the submenu >PE STEP x< is displayed.
1.1 Use the increase/decrease arrows to set the number of the
desired section (1, 2, 3, ... 10).
1.2 Press to enter menu level 3.
Menu level 3:
2 Submenu >Px SEP< (SETPOINT)
Set a temperature value: Example: 180 °C
2.1 Use the cursor keys to move left or right on the display until
the numeral you wish to change blinks.
2.2 Use the increase/decrease arrows to change the selected
numeral (-, 0, 1, 2, 3, ... 9).
2.3 Press enter to store new the value.
2.4 Continue: Press
3 Submenu >Px TIM< (TIME)
Set a time. Example: 10 minutes.
3.1 Use the cursor keys to move left or right on the display until
the numeral you wish to change blinks.
3.2 Use the increase/decrease arrows to change the selected
numeral (-, 0, 1, 2, 3, ... 9).
3.3 Press enter to store new the value.
3.4 Continue: Press
4 Submenu >Px DEL< (DELETE)
Standard setting (NO)
Set the parameter to YES to delete the values in this section.
4.1 If necessary, use the arrows to set the parameter to YES
and press .
5 Press to return to submenu >Px SEP< in menu level 3.
Or
6 Press to return to submenu >PE STEP x< in menu level 2.
XXXXX
P1 xxx
---.-
Sections without value or time indication (including the value 0) are
skipped. But they can be integrated in the profile at a later time.
Example: Section 1
XXXXX
PE DEL
YES
Deleting a profile
>PE DEL< (YES/NO)
Set the parameter to YES to delete all sections >PE STEP / 1 to 10

F38-ME
7.7. MENU ADJUST – ATC Absolute Temperature Calibration
XXXXX
MENU
ADJUST
ATC serves to compensate a temperature difference that might occur
between circulator and a defined measuring point in the bath tank
because of physical properties.
ADJUST: Press enter to switch to menu level 2
>ATC SEN <
(INT) or (EXT)
> ATCSTAT < > ATCSTAT <
(ON or OFF)
(ON or OFF)
>C ART >C ART
>1- point 2- point 3- point < - calibration
> TTEMP 1< > TTEMP 1<
> CTEMP 1< > CTEMP 1<
> TTEMP 2< > TTEMP 2<
> CTEMP 2< > CTEMP 2<
> TTEMP 3< > TTEMP 3<
> CTEMP 3< > CTEMP 3<
1. Press the button until the desired submenu is displayed.
2. Set value /parameter:
Use the cursor keys to move left or right on the display until
the numeral you wish to change blinks.
Use the increase/decrease arrows to change the selected
numeral (-, 0, 1, 2, 3, ... 9).
or
select the parameter with the keys .
3. Press enter to store the value / parameter
Continue: Press / or
49

Menu functions
XXX.X
ACT SEN
INT
XXX.X
ACT SEN
EXT
XXX.X
ATCSTAT
OFF
XXX.X
ATCSTAT
ON
ATC SENSOR - INTERNAL / EXTERNAL
In the first submenu the ATC function is set for the >INT< internal or
>EXT< external temperature sensor.
Calibration can be carried out for the internal temperature sensor and for
the external temperature sensor connected to the socket „ext. Pt100“.
The circulator is able to store both parameter sets. However, only the
one set under this menu item is indicated.
ATC STATUS - ON / OFF
In the second submenu the ATC function for the temperature sensor
selected above is activated >ON< or deactivated >OFFOFF< The controller of the circulator uses the original curve of the
temperature sensor.
Important: During the calibration process > OFF < needs to be set.
>ON< The controller of the circulator uses the new calibration curve.
Important: When the calibration process is finished, set to >ON ON1-point2-point < or >3-point < calibration can be carried out.
First geometrically define the location for calibration (measuring point
CT), then determine the temperature values of the calibration points.
The calibration type also determines the number of pairs of values
indicated on the VFD COMFORT-DISPLAY.
XXX.X
TTEMP 1
x 10.0
XXX.X
TTEMP 2
X 40.0
XXX.X
TTEMP 3
X 70.0
XXX.X
CTEMP 1
x 9.7
XXX.X
CTEMP 2
X 39.5
XXX.X
CTEMP 3
X 69.3
2 values per calibration point
TTEMP X: Temperature on circulator (actual value TT )1 or 2 or 3
Defined temperature value of the calibration point.
This value is simultaneously stored with > CTEMP < and can be
indicated for control purposes.
CTEMP X: Calibration temperature (actual value CT ) 1 or 2 or 3
The „Calibration value“ is determined with a temperature measuring
device and stored under menu item > CTEMP

F38-ME
Example:
1-point calibration
°C
T 1 T
Principle:
For ATC calibration, in steady state the bath temperature at the location
of the temperature sensor (CT) is determined at the respective adjusted
working temperature. This value is then set on the circulator in the menu
>ATCalibration< under menu item > CTEMP X MENU / CONTROL< is
displayed and press enter .
1.1. Under the menu >CONTROL< set the parameter to > INT < and
press enter (see page 28).
Continue: Press .
2. Press the start/stop key .
51

Menu functions
XXX.X
SETP 1
10.0
XXXXX
MENU
ADJUST
XXX.X
ACT SEN
INT
XXX.X
ATCSTAT
OFF
XXX.X
C ART
3 POINT
XXX.X
CTEMP 1
I 9.7
XXX.X
TTEMP 1
I 10.0
„I“ for internal
control
Setting working temperature SETP:
3. Press and set the first temperature value under
> SETPoint 1 < for example (example 1 st value = 10 °C).
3.1. Wait until this temperature is maintained constant in the bath for
about 5 minutes.
Calibration procedure:
4. Press the button until the menu item > MENU / ADJUST < is
displayed and press enter .
4.1. Set menu item >ATC SEN< to >INT< ,
4.2. Set menu item >ATCSTAT< to >OFFC ART< to >3 POINT CTEMP 1<
5.1. Set value: (9.7 °C)
Use the cursor keys to move left or right on the display
until the numeral you wish to change blinks.
Use the increase/decrease arrows to change the
selected numeral (-, 0, 1, 2, 3, ... 9).
5.2. Press enter and the circulator also stores the value of TT
as value for >TTMP 1< (10.0 °C) .
The first of the 3 points is now calibrated.
Continue: Press .
6. Repeat the calibration procedure for 40 °C and 70 °C.
(point 3. to 5.).
Important: After the calibration process, set the menu item
ATC STATUS to >ON

F38-ME
8. Troubleshooting guide / Error messages
XXXXX
ALARM
CODE 01
+
XXXXX
WARNING
CODE 40
Alarm with a complete shutdown of the unit
Whenever the microprocessor electronics registers a failure, a complete
shutdown of the heater and circulating pump is performed. The alarm light
„ “ illuminates and a continuous signal tone sounds.
The VFD COMFORT-DISPLAY indicates the cause for the alarm in form of a
code.
Warning without a complete shutdown of the unit
The VFD COMFORT-DISPLAY indicates the cause for the warning in form of
a code and an acoustic signal sounds in regular intervals.
These messages appear every 10 seconds.
Press enter
to quit the audible signal.
ALARM
CODE 01
The circulator is operated without bath fluid, or the liquid level is
insufficient. Replenish the bath tank with the bath fluid.
Tube breakage has occured (insufficient filling level due to excessive bath
fluid pumped out). Replace the tubing and replenish the bath tank with the
bath fluid.
The float is defect (e. g., because damaged in transit). Repair by
authorized JULABO service personnel.
ALARM
CODE 02
WARNING
CODE 03
ALARM
CODE 03
WARNING
CODE 04
ALARM
CODE 04
ALARM
CODE 05
ALARM
CODE 06
During the self-test after switch-on a short-circuit is registered between pin
2 and pin 4 of the control cable or the control cable is interrupted during
operation.
Reconnect the cable or eliminate the short-circuit.
Excess temperature warning
or
Excess temperature alarm
Warning type: Set to>Warning< or >Alarm< (see page 24)
Low temperature warning
or
Low temperature alarm.
Warning type: Set to>Warning< or >Alarm< (see page 24)
Cable of the working temperature sensor interrupted or short-circuited.
Defect of the working or excess temperature sensor.
Working temperature and excess temperature sensors report a
temperature difference of more than 25 °C.
ALARM
CODE 07
Other errors (I 2 C-BUS errors)
53

Troubleshooting guide / Error messages
ALARM
CODE 12
ALARM
CODE 14
ALARM
CODE 15
WARNING
CODE 20
WARNING
CODE 21
WARNING
CODE 22
Error in A/D converter
Excess temperature sensors defect.
The excess temperature value lies below the working temperature
setpoint. Set the excess temperature to a higher value.
External control selected, but external Pt100 sensor not connected or
defect.
Cooling of the condenser is affected. Clean air-cooled condenser.
Check the flow rate and cooling water temperature on water-cooled
condenser.
Compressor stage 1 does not work.
After a short cooling interval, the compressor motor will be automatically
reconnected and the message "CODE 21" no longer appears.
Compressor stage 2 does not work.
Cooling compressor overload protection
The motor of the cooling compressor is equipped with an overload
protector, which will be activated by excessive temperature in the capsule
or by excessive current consumption.
Causes for motor disconnection:
- poor air circulation
- small distance to walls
- dirt accumulated on condenser
- high ambient temperature
- switch-off and on for short intervals
WARNING
CODE 23
WARNING
CODE 24
WARNING
CODE 25
ALARM
CODE 33
WARNING
CODE 40
Excess temperature in stage 1 of the compressor.
Excess temperature in stage 2 of the compressor.
Short-circuit in the control cable for the refrigerating machine during selftest.
Cable of the excess temperature sensor interrupted or short-circuited.
The early warning system for low level signals a critical fluid level.
Replenish the bath tank with the bath fluid.
After eliminating the malfunction, press the mains power switch off and on
again to cancel the alarm state.
If the unit cannot be returned to operation, contact an authorized JULABO
service station.
54

XXXXX
CONFIG
ERROR
Special message „CONFIGURATION ERROR“
The configuration of the circulator does not conform to its present use.
Press enter to automatically perform a single modification of the
configuration.
Then contact an authorized JULABO service station.
F38-ME
Disturbances that are not indicated.
The electronic pump motor is overload-protected by an electronic current
limiter. If viscosity of the bath fluid is or becomes too high, the motor stops
running.
15
A
M
P
Mains circuit breakers (resettable) 15 A
Cooling machine:Fuse T 10.0 A, dia.5 x 20 mm
The mains fuses (8b) on the rear of the unit may easily be exchanged as
shown on the left.
Warning:
Before exchanging the fuses, turn off the mains power switch and disconnect the
power plug from the mains socket!
Only use fine fuses with a nominal value as specified.
Example:
Manufacturer Supplier Type Order No.
Wickmann Wickmann G- fuse insert
No. 19195
T10,0A 5x20 mm
55

Safety recommendations
9. Safety recommendations
Follow the safety recommendations to prevent damage to persons or property.
Further, the valid safety instructions for working places must be followed.
Only connect the unit to a power socket with earthing contact (PE – protective
earth)!
Place the instrument on an even surface on a pad made of non-inflammable
material.
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.
Observe the fire point of the bath medium used.
The excess temperature protection should be set at least 25 °C below the fire
point.
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 penetrating into the hot bath oil.
Exercise caution when emptying hot bath fluids!
Check the temperature of the bath fluid prior to draining (by switching the unit on
for a short moment for example).
Observe the limited working temperature range when using plastic bath tanks.
Employ suitable connecting tubing.
Make sure that the tubes are securely attached.
Never operate damaged or leaking equipment.
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.
Some parts of the bath cover and the pump connections may become extremely
warm during continuous operation. Therefore, exercise particular caution when
touching these parts.
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 shutdown 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.
56

F38-ME
10. Electrical connections
Notice:
Use shielded cables only.
The shield of the connecting cable is electrically connected to the plug housing.
The unit ensures safe operation if connecting cables with a maximum length of 3 m are
used. The use of longer cables does not affect proper performance of the unit, however
external interferences may have a negative impact on safe operation (e.g. cellular
phones).
Pt100
Shield
ext. Pt100
2
3
Plug
1
4
Look on
soldering side.
Socket for external Pt100 sensor
Pin assignment:
Pin Signal
1 I+
2 U+
3 U-
4 I-
The shield of the connecting cable is electrically connected to the plug
housing and the sensor tube.
RS232 serial interface
This port can be used to connect a computer with an RS232 cable for
remote control of the circulator.
RS232C
Pin assignments RS232:
Pin 2 RxD Receive Data
Pin 3 TxD Transmit Data
Pin 5 0 V Signal GND
Pin 6 DTR Data terminal ready
Pin 7 RTS Request to send
Pin 8 CTS Clear to send
RS232 interface cable 9-pin / 9-pin, 2.5 m Order No.: 8 980 073
57

Remote control
/ Control output
The connector may be used for control of JULABO refrigerated
circulators or as output for alarm messages.
2
4 5
1 3
Circuit: Operation = relay powered
Alarm = relay not powered
Pin assignment:
Pin Signal
1 +24 V (I max. current 25 mA)
2 0 V
3 Alarm relay
4 Reserved - do not use!
5 Cooling pulse
11. Remote control
11.1. Setup for remote control
SERIAL
R
-OFF-
S xxxx
I xxxx
1. Check the interface parameters for both interfaces (on circulator and PC)
and make sure they match.
(Serial interface see page 35)
2. In the menu > MENU / CONFIG < set the menu item > SETPoint < to
> SERIAL < .
(see 7.3.1.SETPOINT – Keypad control or remote control on page 32)
3. Connect both units with an interface cable..
Like all parameters which can be entered through the keypad, interface
parameters are stored in memory even after the circulator is turned off.
58

F38-ME
11.2. Communication with a PC or a superordinated data system
If the circulator is put into remote control mode via the configuration level, the
VFD COMFORT-DISPLAY will read „R -OFF-„ = REMOTE STOP. The
circulator is now operated via the computer.
In general, the computer (master) sends commands to the circulator (slave).
The circulator sends data (including error messages) only when the
computer sends a query.
In remote control mode: After a power interruption the order to start and all
values which have to be adjusted must be resent from the personal computer
via the interface.
AUTOSTART is not possible.
A transfer sequence consists of:
command
space (; Hex: 20)
parameter (the character separating decimals in a group is the period)
end of file (; Hex: 0D)
The commands are divided into in or out commands.
in commands: asking for parameters to be displayed
out commands: setting parameters
The out commands are valid only in remote control mode.
Command to set the working temperature > SETP 1< to 55.5 °C
out_sp_00 55.5
Command to ask for the working temperature > SETP 1<
in_sp_00
Response from the circulator:
55.5
59

Remote control
11.3. List of commands
out commands: Setting temperature values or parameters.
Command Parameter Response of circulator
out_mode_01 0 Use working temperature > SETP 1<
out_mode_01 1 Use working temperature > SETP 2<
out_mode_01 2 Use working temperature > SETP 3<
out_mode_04 0 Temperature control of internal bath.
out_mode_04 1 External control with Pt100 sensor.
out_mode_05 0 Stop the unit = R –OFF-.
out_mode_05 1 Start the unit.
out_mode_08 0 Set the control dynamics - aperiodic
out_mode_08 1 Set the control dynamics - standard
out_sp_00 xxx.xx Set working temperature. „SETP 1“
out_sp_01 xxx.xx Set working temperature. „SETP 2“
out_sp_02 xxx.xx Set working temperature. „SETP 3“
out_sp_03 xxx.xx Set high temperature warning limit „OVERTEMP“
out_sp_04 xxx.xx Set low temperature warning limit „SUBTEMP“
out_sp_07 x Set the pump pressure stage. (1 ... 4)
out_par_04 x.x CoSpeed 0 ... 5.0 Band limit during external control.
Setting the maximum difference between the temperatures
in the internal bath and external system.
out_par_06 xxx Xp control parameter of the internal controller. 0.1 ... 99.9
out_par_07 xxx Tn control parameter of the internal controller. 0 ... 9999
out_par_08 xxx Tv control parameter of the internal controller. 0 ... 999
out_par_09 xxx Xp control parameter of the cascade controller. 0.1 ... 99.9
out_par_10 xxx Proportional portion of the cascade controller. 1 ... 99.9
out_par_11 xxx Tn control parameter of the cascade controller. 0 ... 9999
out_par_12 xxx Tv control parameter of the cascade controller. 0 ... 999
out_par_13 xxx Maximum internal temperature of the cascade controller.
60

F38-ME
Command Parameter Response of circulator
out_par_14 xxx Minimum internal temperature of the cascade controller.
out_par_15 xxx Band limit (upper) 0 ... 200 °C
out_par_16 xxx Band limit (lower) 0 ... 200 °C
in commands: Asking for parameters or temperature values to be displayed.
Command Parameter Response of circulator
version none Number of software version (V X.xx)
status none Status message, error message (see page 62)
in_pv_00 none Actual bath temperature.
in_pv_01 none Heating power being used (%).
in_pv_02 none Temperature value registered by the external Pt100 sensor.
in_pv_03 none Temperature value registered by the safety sensor.
in_pv_04 none Setpoint temperature of the excess temperature protection
in_sp_00 none Working temperature „SETP 1“
in_sp_01 none Working temperature „SETP 2“
in_sp_02 none Working temperature „SETP 3“
in_sp_03 none High temperature warning limit „OVERTEMP“
in_sp_04 none Low temperature warning limit „SUBTEMP“
in_sp_07 none Pump pressure stage
in_par_01 none Te - Time constant of the external bath.
in_par_02 none Si - Internal slope
in_par_03 none Ti - Time constant of the internal bath.
in_par_04 none CoSpeed - Band limit (max. difference between the
temperatures in the internal bath and external system).
in_par_05 none Factor pk/ph0:
Ratio of max. cooling capacity versus max. heating capacity
in_par_06 none Xp control parameter of the internal controller.
in_par_07 none Tn control parameter of the internal controller.
in_par_08 none Tv control parameter of the internal controller.
in_par_09 none Xp control parameter of the cascade controller.
61

Remote control
Command Parameter Response of circulator
in_par_10 none Proportional portion of the cascade controller.
in_par_11 none Tn control parameter of the cascade controller.
in_par_12 none Tv control parameter of the cascade controller.
in_par_13 none Adjusted maximum internal temperature of the cascade
controller.
in_par_14 none Adjusted minimum internal temperature of the cascade
controller.
in_par_15 none Band limit (upper)
in_par_16 none Band limit (lower)
in_mode_01 none Selected setpoint:
0 = SETP 1
1 = SETP 2
2 = SETP 3
3 = Last setpoint setting was carried out
through an external programmer
in_mode_04 none Internal/external temperature control:
0 = Temperature control with internal sensor.
1 = Temperature control with external Pt100 sensor.
in_mode_05 none Circulator in Stop/Start condition:
0 = Stop
1 = Start
in_mode_08 none Adjusted control dynamics
0 = aperiodic
1 = standard
11.4. Status messages
Status messages
Description
00 MANUAL STOP Circulator in „OFF“ state.
01 MANUAL START Circulator in keypad control mode.
02 REMOTE STOP Circulator in „r OFF“ state.
03 REMOTE START Circulator in remote control mode.
62

F38-ME
11.5. Error messages
Error messages
Description
-01 LOW LEVEL ALARM Low liquid level alarm.
-02 REFRIGERATOR ALARM Control cable of the refrigerated circulator or MVS
solenoid valve controller short-circuited or interrupted.
-03 EXCESS TEMPERATURE
WARNING
High temperature warning.
-04 LOW TEMPERATURE WARNING Low temperature warning.
-05 WORKING SENSOR ALARM Working temperature sensor short-circuited or interrupted.
-06 SENSOR DIFFERENCE ALARM Sensor difference alarm.
Working temperature and safety sensors report a temperature
difference of more than 25 °C.
-07 I 2 C-BUS ERROR Internal error when reading or writing the I 2 C bus.
-08 INVALID COMMAND Invalid command.
-09 COMMAND NOT ALLOWED IN
CURRENT OPERATING MODE
Invalid command in current operating mode.
-10 VALUE TOO SMALL Entered value too small.
-11 VALUE TOO LARGE Entered value too large.
-12 TEMPERATURE MEASUREMENT
ALARM
Error in A/D converter.
-13 WARNING : VALUE EXCEEDS
TEMPERATURE LIMITS
Value lies outside the adjusted range for the high and low
temperature warning limits. But value is stored.
-14 EXCESS TEMPERATURE
PROTECTOR ALARM
Excess temperature protector alarm
-15 EXTERNAL SENSOR ALARM External control selected, but external Pt100 sensor not
connected.
-20 WARNING: CLEAN CONDENSOR
OR CHECK COOLING WATER CIRCUIT
OF REFRIGERATOR
-21 WARNING: COMPRESSOR STAGE
1 DOES NOT WORK
-22 WARNING: COMPRESSOR STAGE
2 DOES NOT WORK
Cooling of the condenser is affected.
Clean air-cooled condenser.
Check the flow rate and cooling water temperature on
water-cooled condenser.
Compressor stage 1 does not work.
Compressor stage 2 does not work.
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40
0
100
150
230
°C
Maintaining the cooling performance
Error messages
-23 WARNING: HIGH TEMPERATURE
ON COMPRESSOR STAGE 1
-24 WARNING: HIGH TEMPERATURE
ON COMPRESSOR STAGE 2
Description
Excess temperature on compressor stage 1.
Excess temperature on compressor stage 2.
-25 REFRIGERATOR WARNING Error in the cooling machine.
-30 CONFIGURATION ERROR:
CONFIRM BY PRESSING ON
CIRCULATOR
The configuration of the circulator does not conform to its
present use.
Press enter to automatically perform a single
modification of the configuration.
-33 SAFETY SENSOR ALARM Excess temperature sensor short-circuited or interrupted.
-40 NIVEAU LEVEL WARNUNG Low liquid level warning in the internal reservoir.
12. Maintaining the cooling performance
ME
In dusty environments, the refrigerating maschine’s
condenser should be cleaned by vacuuming every 1
to 2 months. The condenser is located behind the
venting grid on the front of the unit, which can be
taken off by removing the screws.
F38
Switch off the unit, disconnect mains power
cable.
Remove the venting grid.
Clean the ribbed condenser with a vacuum
cleaner.
Replace the venting grid.
Switch on the unit.
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F38-ME
13. JULABO Service – Online remote diagnosis
JULABO circulators of the HighTech series are equipped with a
so-called black box. This box is implemented in the controller and
records all significant data for the last 30 minutes.
In case of a failure, this data can be read out from the unit by
using special software. The respective program is available for
free download from www.julabo.de \ EasyBlackBox.
Installation is easy and carried out step by step.
Please observe the instructions.
Data read-out is possible in the conditions
„OFF“, „R OFF“ or „ALARM“.
Connect the circulator to the computer using an interface
cable.
Start the EasyBlackBox program.
The program asks for the used port (COM1, ......) and the
baud rate of the unit.
You do not have this information on hand? Simply try it out!
The program keeps on sending this request until the actually
used port and correct baud rate are entered.
Data is read out and shown on the monitor
divided in the sections
>Einstellungen/SettingsAlarmspeicher/Alarms storedBlackbox<
see example
After pressing >Speichern/Save< a text file is
compiled. The program proposes a filename -
>C:\model description and barcode no.

Cleaning / repairing the unit
14. Cleaning / repairing the unit
Caution:
Always turn off the unit and disconnect the mains cable from the power source before
cleaning the unit.
Prevent humidity from entering into the circulator.
Electrical connections and any other work must be performed by qualified personnel
only.
Cleaning:
For cleaning the bath tank and the immersed parts of the circulator, use low surface
tension water (e.g., soap suds).
Clean the outside of the unit using a wet cloth and low surface tension water.
The circulator is designed for continuous operation under normal conditions. Periodic
maintenance is not required.
The tank should be filled only with a bath fluid recommended by JULABO. To avoid
contamination, it is essential to change the bath fluid from time to time.
Repairs
Before asking for a service technician or returning a JULABO instrument for
repair, please contact an authorized JULABO service station.
When returning the unit:
Clean the unit in order to avoid any harm to the service personnel.
Attach a short fault description.
If you intend to return your JULABO unit to us, you will find a Service Return Form
on our website www.julabo.de. Please use this as a delivery note and include it to
the unit or send it in advance either by Fax or E-Mail.
During transport the unit has to stand upright. Mark the packing correspondingly.
When returning a unit, take care of careful and adequate packing.
JULABO is not responsible for damages that might occur from insufficient packing.
JULABO reserves the right to carry out technical modifications with repairs for
providing improved performance of a unit.
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