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Heating immersion circulator, open bath heating circulator,
refrigerated circulator
Original operating manual
1.950.0400.en.V05 12/2022
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Legal
The content of this operating manual is protected by copyright. Information,
including texts, images, and other contents may not be reproduced, distributed,
transmitted, stored or otherwise used in any form without prior explicit written
consent.
Illustrations in this operating manual are for illustrative purposes and are not
necessarily displayed to scale.
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1 Foreword ............................................................................................. 5
2 About this manual .............................................................................. 6
2.1 Original JULABO spare parts .......................................................... 6
2.2 Accessories ..................................................................................... 6
2.3 Warnings ......................................................................................... 7
2.4 Symbols used .................................................................................. 8
3 Intended use ....................................................................................... 8
4 Safety ................................................................................................... 9
4.1 Safety instructions ........................................................................... 9
4.2 Safety symbols .............................................................................. 11
4.3 Safety function ............................................................................... 11
5 Product description.......................................................................... 12
5.1 Product overview ........................................................................... 12
5.2 Operating and functional elements ............................................... 13
5.2.1 Key description ......................................................................... 14
5.3 Alarm messages ............................................................................ 14
5.4 Technical data ............................................................................... 15
5.4.1 Material of parts that come into contact with the medium ........ 17
5.4.2 Bath fluids ................................................................................. 17
6 Transport and installation ............................................................... 18
6.1 Transporting the device ................................................................. 18
7 Initial operation ................................................................................. 19
7.1 Connect the device to the power supply ....................................... 19
7.2 Fill device ...................................................................................... 19
8 Operation ........................................................................................... 20
8.1 Switch on the unit .......................................................................... 20
8.2 Switch off the unit .......................................................................... 20
8.3 Configuring setpoint temperature .................................................. 20
8.4 Start temperature control application ............................................ 21
8.5 Activate autostart function ............................................................. 21
8.6 Setting the timer ............................................................................ 22
8.7 Adjusting the temperature sensor (ATC) ....................................... 22
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9 Maintenance ...................................................................................... 23
9.1 Check safety symbols.................................................................... 23
9.2 Test the low liquid level safety function ......................................... 23
9.3 Replace detachable power cord .................................................... 24
9.4 Emptying ........................................................................................ 24
9.5 Clean device .................................................................................. 25
9.6 Device storage ............................................................................... 25
9.7 Technical Service .......................................................................... 26
9.8 Warranty ........................................................................................ 26
10 Disposal ............................................................................................. 27
10.1 Device disposal ............................................................................. 27
11 EC Declaration of Conformity ......................................................... 28
12 UK Declaration of Conformity ......................................................... 29
13 Appendix ........................................................................................... 30
13.1 Alarms and Warnings .................................................................... 30
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1 Foreword
Foreword
Congratulations!
You have made an excellent choice.
JULABO would like to thank you for the trust you have placed in our company
and products.
This operating manual will help you become acquainted with the use of our
units. Read the operating manual carefully. Keep the operating manual handy at
all times.
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About this manual
NOTE
2 About this manual
This manual is intended for the equipment specified on the cover page.
Observe the safety instructions!
Read the Safety section of this manual before using the equipment for the
first time.
2.1 Original JULABO spare parts
Hassle-free continuous operation and safety also depend on the quality of the
spare parts used.
Only original JULABO spare parts guarantee the highest possible quality and
safety. Original JULABO spare parts are available directly from JULABO or your
specialist dealer.
Please note that JULABO cannot provide a warranty service if non-original
JULABO spare parts are used.
2.2 Accessories
JULABO offers a wide range of accessories for the devices. Accessories are not
described in this manual.
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2.3 Warnings
DANGER
WARNING
This signal word designates a danger with a medium level of risk which, if it
CAUTION
NOTE
About this manual
The manual contains warnings to increase safety when using the device.
Warnings must always be observed.
A warning sign displayed in signal color precedes the signal word. The signal
word, highlighted in color, specifies the severity of the hazard.
This signal word designates a danger with a high level of risk which, if it not
prevented, will result in death or serious injuries.
not prevented, may result in death or serious injuries.
This signal word designates a danger with a low level of risk which, if it not
prevented, may result in minor to moderate injuries.
This signal word designates a possibly harmful situation. If it is not avoided,
the system or objects in its vicinity may be damaged.
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Intended use
2.4 Symbols used
Various symbols are used throughout this manual to aid reading
comprehension. This list describes the symbols used.
Tools needed for the following approach
Prerequisite to be met for the following procedure
1. Numbered action steps
Interim result for individual action steps
Additional note for individual action steps
Final result of a procedure
<> Terms in angle brackets denote control menu
[] Terms in square brackets denote keys, softkeys and buttons
3 Intended use
This section defines the purpose of the unit so that the operator can operate the
unit safely and avoid misuse.
JULABO heating immersion circulators and open heating bath circulators are
designed to control water temperature. Samples in suitable tanks can be
temperature-controlled.
These devices are not suitable for direct temperature control applications for
food, other consumables, or pharmaceutical or other medical products.
Do not use bath fluids other than water, as this is not in accordance with the
device's intended use.
These devices are not suitable for use in explosive environments.
These devices are not intended for use in living areas. They may cause
interference with radio reception.
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4 Safety
4.1 Safety instructions
The unit is built in accordance with state of the art technology and recognized
safety regulations. Despite this, its use may pose a risk to life and limb for the
user or third parties.
Therefore, always read and observe the following safety instructions before
using the product.
Hot surfaces!
The following parts and elements may become hot during operation:
– Bath fluid
– Heating element
– Bath lid
– Bath surface
– Connections for external application
Contact may cause severe burns or scalds to hands and arms, face and limbs.
• Keep sufficient distance from hot surfaces and fluids.
• Wear suitable protective gloves.
Electric shock from electrical system!
Touching damaged live parts can cause severe electric shocks and lead to injury
or even death.
• Have damaged insulation and parts of the electrical system immediately
repaired by JULABO service technicians or a qualified specialist workshop
• Immediately replace damaged power cords
• When connected with a mains plug, this mains plug must always be readily
accessible
Safety
Wear personal protective equipment!
Lacking or unsuitable personal protective equipment increases the risk of health
damage and injury.
Personal protective equipment includes, for example:
– Work gloves
– Safety shoes
- Protective clothing
– Breathing protection
- Hearing protection
– Face and eye protection
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Safety
• Specify and provide personal protective equipment for the respective
application.
• Use only personal protective equipment that is in good condition and
provides effective protection.
• Adapt personal protective equipment to the person, e.g., by size.
Keep safety symbols legible!
Safety symbols on the unit warn of dangers in hazardous areas and are an
important part of the unit’s safety equipment. Missing safety symbols increase
the risk of injury to persons.
• Clean dirty safety symbols.
• Replace damaged and unrecognizable safety symbols immediately.
Maintenance and repair work!
Improper maintenance and repair work jeopardizes operational safety. This can
result in serious injury or death.
• Only carry out work described in this operating manual. Switch off the unit
and disconnect it from the power supply before carrying out any work.
• All other maintenance and repair work may only be carried out by a service
technician or a qualified specialist workshop.
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4.2 Safety symbols
There are safety symbols included with the device, which should be attached to
the device before initial operation.
Safety
Safety
symbols
4.3 Safety function
Technical protective devices provide for safe operation. If a safety function is
triggered, the operator is alerted with a message on the display and an acoustic
signal.
Description
Warning of a danger zone. Note operating manual
Warning about hot surface
Warning of cold surface
Read operating manual before switching on
Overheating protection
The overheating protection prevents overheating of the heater.
• The protective mechanism is triggered when the device recognizes a
temperature difference of more than 20 K between the working
temperature sensor and the safety temperature sensor. Am error message
appears on the display. A restart is required.
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Product description
to 30 l.
tank. Example: CORIO C-BT9.
Low liquid level protection
A level switch recognizes when the bath fluid fill level in the bath tank is too
low. The unit has a warning system to prevent overheating of the heater or dry
running of the pump.
• The low liquid level alarm is triggered when the float reaches its lower limit
stop. The device switches off the pump and heater. A continuous signal
tone sounds. An error message appears on the display. A restart is required.
Product descr i pt i on
5 Product description
Product overvi ew
5.1 Product overview
The circulators can be combined with various baths with volumes of up to 30 l.
Depending on the device combination and accessories used, the circulators work
in a temperature range from +20°C to +100°C.
Heating immersion circulator Open heating bath circulator
CORIO C circulator for bath tanks up
Circulator with transparent bath
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5.2 Operating and functional elements
2
Heating control LED
The following figure shows the operating and functional elements and their
position on the unit.
Fig. 1: Control and function elements
Product description
1 Mains switch
3 LED display
4 Alarm control LED
5 Keypad with display
6 Service key (covered)
7 Mains fuse, resettable
8 Mains fuse, resettable
9 Mains connection
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Product description
5.2.1 Key description
The device is operated using the key panel. This is used to control all menu
functions and make entries.
Key Function
5.3 Alarm messages
Alarms and warnings are indicated on the display using error codes. Important
error code descriptions can be found in the appendix. If you are unable to rectify
a fault, contact Technical Service.
Press [OK] to start a temperature control application or to
stop a running temperature control application.
Press [OK] to enable a selected function, open a menu
option, or confirm a set value.
Use the arrow keys to select a function or set a value. Short
press for single steps, press and hold for fast counting.
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Alarm:
In the event of an alarm, the control LED lights up. The temperature control is
stopped. At the same time, a continuous acoustic signal sounds and an error
code is shown on the display. The acoustic signal can be deactivated by pressing
the [OK] key. The fault causing the alarm must be remedied. A restart is
required.
Warning:
In the event of a warning, the temperature control application is not interrupted.
A signal tone is emitted at intervals. The display alternates between the actual
temperature and the error code. The acoustic signal can be deactivated by
pressing the [OK] key. If the underlying cause of the warning is remedied, the
signal tone ceases. Depending on the cause, warnings may cease automatically
after a period of time, e.g. when the device cools down.
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5.4 Technical data
Performance specifications measured in accordance with DIN12876.
Performance specifications apply at an ambient temperature of 20°C.
Grouping of the device acc. to CISPR 11:
• The device is an ISM device of group 1, which uses high frequency for
internal purposes
• Class A: Use in an industrial electromagnetic environment
In accordance with IEC 61010-1, the device is designed for safe operation under
the following ambient conditions:
• Indoor use
• Altitude up to 2000 m above sea level
• Ambient temperature +5 … +40°C
• Maximum relative humidity 80% for temperatures up to 31°C, decreasing
linearly down to 50% relative humidity at 40°C
• Mains voltage fluctuations up to ±10% of the nominal voltage permissible
if not otherwise specified
• Pollution degree level 2
Protection class according to EN 60 529:
• Protection class IP21
Product description
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Product description
CORIO C
Temperature control application
Working temperature range °C +20 … +100
Temperature stability °C ± 0.03
Temperature resolution °C 0.01
Temperature control PID1
Temperature setting Digital
ATC sensor adjustment 1-point adjustment
Pump
Volume flow rate at 0 bar l/min 6
Supply pressure at 0 l bar 0.1
Maximum viscosity cSt 1
Dimensions
Dimensions (W x D x H) cm 13.2 x 16.0 x 36.2
Immersion depth cm 16.6
Weight kg 1.9
Display
Display LED
Performance data
Mains connection 100-115 V, 50/60 Hz 230 V, 50/60 Hz
100 V
50/60 Hz
Current consumption A 8 10 9
Heating capacity kW 0.8 1.0 2.0
Mains fuse, resettable A 15
115 V
60 Hz
230 V
50/60 Hz
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Product description
NOTE
5.4.1 Material of parts that come into contact with the medium
The table lists parts that could come into contact with the bath fluid as well as
the material that the parts are made of. This data can be used to check the
compatibility of the parts with the bath fluid used.
Parts that come into
contact with the medium
Motor 1.4301
Pump PPS
Heating element 1.4404/316L
Inbuilt temperature sensor
Pt100
Connection of temperature
sensor
Float 1.4401
Float pipe 1.4571
Hose olive 1.4301
Single-ear clamp 1.4301
Hose FPM/FKM
5.4.2 Bath fluids
Only water with an electrical conductivity of 0.1 to 50 µS is permitted as bath
fluid.
Material
1.4571
1.4301
No liability accepted for usage of bath fluids that are not
suitable!
Unsuitable bath fluids that are not approved by JULABO can damage the
water bath.
• Use bath fluids that are recommended by JULABO
• Before filling, check the parts that are in contact with the medium for
compatibility with the bath fluid
• Do not exceed the maximum permissible viscosity during operation
• Consult JULABO before using a bath fluid other than the recommended
one
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Transport and installation
CAUTION
Water as bath fluid
• Water can be used for working temperatures from +5 °C to +90 °C
• Recommended: Use only ultrapure or distilled water.
• When using ultrapure or distilled water, add 0.1 g Na
6 Transport and installation
6.1 Transporting the device
This section describes how to transport the device safely.
Burn hazard on the heating element!
The heating element may still be hot even after the device has been switched
off, and may cause burns if touched.
• Allow the device to cool down to room temperature after switching off
• Wear protective gloves
The device is switched off and cooled to room temperature.
1. Disconnect the mains cable from the device.
2. Disconnect the circulator from the bath before transport.
3. Empty the bath.
See the technical data for weight information.
The device can be safely transported to its installation location.
per liter of water.
2CO3
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7 Initial operation
7.1 Connect the device to the power supply
This section describes how the circulator is connected as a bridge mounted
circulator or heating circulator.
The circulator is mounted as a bridge mounted or heating circulator.
The power cable is ready for use.
Initial operation
7.2 Fill device
1. Insert the power cable on the back of the circulator into the mains
connection [1].
2. Connect the circulator to the power supply using the power cable.
The circulator is connected.
This section describes how the device should be filled with bath fluid during
initial operation.
Specifications for filling volume can be found in the technical data.
The device is mounted on a bath and switched off.
1. Fill the bath with water.
Maximum filling height 30 mm below the upper edge of the bath.
The bath fluid expands with increasing temperature and can overflow.
With decreasing temperature, the low liquid level protection can be
triggered and interrupt the temperature control process.
2. Place the sample in the bath.
3. If necessary, adjust the level by refilling or draining.
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Operation
Once the working temperature has been reached and the sample inserted,
the bath fluid level in the bath tank should cover the heating coil of the
heating circulator.
The unit is filled with bath fluid.
B
8 Operation
8.1 Switch on the unit
This section describes how to switch on the device.
The device is connected and ready for operation.
1. Switch the unit on at the mains switch.
All display elements light up briefly, the software boots and starts the
device.
The device is switched on and ready for operation. The display shows
“OFF”. If the auto start function is activated, then the device starts directly
into the last setting.
8.2 Switch off the unit
This section describes how to switch off the device.
The device is switched on.
1. Stop a running temperature control application.
2. Switch the device off at the mains switch.
The device is switched off.
8.3 Configuring setpoint temperature
Device is running the temperature control application to the configured setpoint
temperature. The factory setting is 10°C. The setpoint temperature can be
changed while the temperature control application is running. The set value is
saved.
The unit is switched on.
1. Press one of the arrow keys briefly.
The display switches from the actual value display to the setpoint display,
then shows the last saved setpoint temperature. The digits before the
decimal point flash.
2. Use the arrow keys to set the value before the decimal point and confirm
with [OK].
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The set value is applied. The decimal point flashes.
3. Use the arrow keys to set the value after the decimal point and confirm with
[OK].
The set value is applied. The new setpoint temperature flashes briefly.
The setpoint temperature is set and active.
8.4 Start temperature control application
You can start a temperature control application right on the device, or program
one using the timer.
The unit is ready for use.
1. Switch the unit on at the mains switch.
2. Use the arrow keys to set the desired setpoint temperature.
3. Press and hold the [OK] key until the temperature control application starts.
The setpoint temperature is saved. The display flashes briefly. The unit starts
the temperature control application at once. The temperature control
application can be stopped with the [OK] key.
Observe the following for heating circulators:
For temperature control applications near or below the ambient
temperature: Use a cooling coil or JULABO immersion cooler.
Operation
8.5 Activate autostart function
The autostart function makes it possible to start a temperature control
application directly using the mains switch or via an intermediate timer.
The device is configured ex works in such a ways that it switches to a safe
operating status in the event of power failure. The autostart function is
deactivated. The display shows “OFF.” The refrigeration aggregate, heater, and
pump motor are disconnected from the mains voltage.
The unit is switched off.
The autostart function is deactivated.
1. Simultaneously press and hold the [OK] key and the power switch until the
device is switched on.
The display shows <AOn>.
The autostart function is activated. The temperature control application
starts immediately with the preset values, each time the device is switched
on, as long as the autostart function is active. To deactivate the autostart
function, switch off the device and repeat the procedure. The display will
then show <AOFF>.
You can also insert and program a timer. In this case the mains switch of the
device must remain on.
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Operation
8.6 Setting the timer
The timer can be used to program the duration of a temperature control
application from 0 to 999 minutes. The setpoint temperature is maintained for
the programmed time. After the set duration has elapsed, the device switches to
standby mode.
The unit is switched on.
1. Press the [Down Arrow] and [OK] keys simultaneously.
The display shows <t O>.
2. Use the arrow keys to set the minutes and confirm with [OK].
The display flashes briefly.
The timer is programmed and active.
The decimal point flashes on the display until the timer starts. The timer starts
when the setpoint temperature is reached and maintained, with a precision of
±0.1°K, for at least 30 seconds. Below 1 minute, the remaining run time is
shown in seconds.
After the set time has elapsed, a double acoustic signal sounds and the device
switches to standby mode.
The setpoint temperature can still be changed until it is reached. The timer
remains active and starts when the new setpoint temperature is reached. If the
setpoint temperature is changed while the timer is running, the timer is
deactivated.
Press the [OK] key to stop the running timer.
8.7 Adjusting the temperature sensor (ATC)
For physical reasons, there can be a temperature difference in the bath tank
between the temperature sensor and a defined, more remote point within the
bath fluid volume. As a result, the measured temperature deviates slightly from
the actual bath temperature. Adjustment of the temperature sensor can increase
accuracy of the temperature control application.
The bath tank is filled.
The unit is switched on.
1. Hang the calibrated thermometer in the bath tank and place the bath lid on
top.
2. Set the desired setpoint temperature and start the temperature control
application.
When the setpoint is reached, allow the temperature to stabilize for several
minutes.
The more stable the temperature in the bath tank, the more precise the
adjustment result.
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3. Simultaneously press the Service key and [Down Arrow] keys until the
decimal point flashes.
4. Enter the read reference temperature and confirm with [OK].
The calibration value is applied directly. The display shows <CAL> for
confirmation.
The entered reference temperature must be within ±5°C of the setpoint
temperature, otherwise an error message appears and the entry is ignored.
The temperature sensor is adjusted.
i
9 Maintenance
9.1 Check safety symbols
The safety labels affixed to the device must be clearly legible at all times. Their
condition must be checked every two years.
1. Check the safety signs on the device for legibility and completeness.
2. Replace defective or missing safety markings.
Safety signs can be reordered.
The safety signs on the device have been checked.
9.2 Test the low liquid level safety function
Maintenance
This section describes how you can test that the low liquid level safety function
is operational.
The device is switched on.
1. Remove the bath lid.
2. Using a long object, e.g. a straightedge, carefully push the circulator float
downwards until it reaches its mechanical stop.
An acoustic signal sounds and the error code “E 01” is displayed. The low
liquid level safety function works.
3. Switch the device off, wait a few seconds, then switch the device on again.
The alarm message is deactivated.
4. Close the bath opening.
The low liquid level safety function has been tested for functionality.
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Maintenance
CAUTION
9.3 Replace detachable power cord
The device is equipped with a detachable power cord.
If the power cord needs to be replaced, ensure that the new one is at least
dimensioned for the device power requirements. Insufficiently dimensioned
power cords must not be used. See type plate for mains voltage and current
value.
We recommend only using original JULABO spare parts.
9.4 Emptying
The device must be completely drained if it is to be sent in for technical service
or is to be properly disposed of.
In general, the device should be completely emptied before longer shutdowns or
when there is a change to the external application.
Risk of burns from hot bath fluid!
Bath fluid can become very hot during a temperature control process.
Contact with hot bath fluid can cause scalding.
• Before draining the device, let it cool to room temperature
• Avoid direct contact with hot bath fluid
• Wear protective gloves
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The device is switched off and disconnected from the mains voltage.
1. Remove the sample from the bath.
2. Remove the circulator from the bath.
3. Tilt the bath over a sink.
The device is emptied.
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9.5 Clean device
NOTE
• Prevent water from entering the device
The circulator and bath tank, and also a cooling machine if connected, should
be cleaned from time to time.
In addition to this, the device must be appropriately decontaminated if
hazardous substances have been spilled on or into the device.
Lint-free cloth
Mild cleaning agent
Damage to the electronics due to water penetration!
Ingress of water can damage electronic components of the device and thus
lead to failure of the device.
• Clean the outside of the device with a damp cloth only
The device is switched off and disconnected from the mains voltage.
1. Allow the device to cool down to room temperature.
2. Completely drain the bath fluid.
3. Clean the surface of the circulator and the bath tank with a damp cloth.
Some dish detergent may also be used for cleaning. If in doubt, ask
The device has now been cleaned.
Maintenance
technical service for alternative cleaning mediums.
9.6 Device storage
This section describes how to store the device.
The device is switched off and disconnected from the mains voltage.
1. Empty all system components completely.
2. Clean the device.
3. Carefully dry the device and all its system components, e.g. with
compressed air.
4. Close all connections.
5. Store the device in a dust-free, dry and frost-free location.
The device is protected and can be safely stored there. It can be put into
operation again as needed.
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Maintenance
9.7 Technical Service
If the unit shows faults you cannot resolve, please contact our Technical Service.
Before sending a device to Technical Service, the following points must be
observed:
• Clean and decontaminate the device properly to avoid endangering service
personnel.
• Include a brief description of the fault.
• Package the device safely for shipment.
9.8 Warranty
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JULABO provides a warranty that the device will function perfectly as long as it
is connected and used correctly and as described in the operating manual.
The warranty period is one year from the invoice date.
With the 1PLUS warranty, the warranty can be extended to two years free of
charge.
The 1PLUS warranty gives the user a free extended warranty to 24 months, limit
to a maximum of 10,000 hours of service.
A prerequisite for this is that the user registers the device, quoting its serial
number, within four weeks of initial operation. The warranty applies from the
date of JULABO GmbH’s original invoice.
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10 Disposal
10.1 Device disposal
When disposing of the device, the applicable country-specific guidelines must be
observed.
The circulator combination is switched off and disconnected from the mains
voltage.
1. Empty the bath tank or cooling machine completely.
2. Disconnect all power cables and, if necessary, data cables from the
circulator and from other connected devices.
3. If present, disconnect the circulator combination from a connected external
application.
4. Remove the circulator from the bath tank or cooling machine.
5. Give the devices to an authorized disposal company.
Disposed of the device in household waste, or similar facilities for the
collection of domestic waste, is not permissible.
The circulator combination is disposed of properly.
Disposal
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EC Declaration of Conformity
11 EC Declaration of Conformity
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12 UK Declaration of Conformity
UK Office: JULABO UK Ltd., Unit 7, Casterton Road Business Park,
Old Great North Road, Little Casterton, Stamford, PE9 4EJ, United Kingdom,
Tel.: +44 1733 265892
UK Declaration of Conformity
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Appendix
contact Technical Service.
•
13 Appendix
13.1 Alarms and Warnings
If the device is connected to a network and remotely controlled, a status query
via interface command will output any pending alarms or warnings as text.
Alarm and warning messages are described in the table.
If a displayed error code is not described in the table or the error is still pending
after switching off and on again, please contact Technical Service.
The listed error codes can occur depending on the device type and version.
-01 The unit is being operated with a bath
fluid level that is too low.
-06
-14 The set protective temperature has
-60 Internal read/write error.
-61 CAN bus error
The temperature difference between
the working temperature sensor and
the safety temperature sensor is too
large.
been exceeded.
• Top up the bath fluid.
• Check the temperature control hoses
for damage and replace if necessary.
• Increase circulation.
• Check the viscosity of the tempering
fluid.
• If the fault has not been remedied,
• Check working temperature range of
the application.
• Increase the value of the protective
temperature or decrease the setpoint
temperature until it is lower than the
set protective temperature.
Switch off the unit at the mains switch,
wait 4 seconds and then switch the
unit on again.
• Check CAN bus cable for damage and
replace as necessary. Switch the unit
on again. If the fault has not been
remedied, contact Technical Service.
• Alternatively: Deactivate the
refrigeration unit. The circulator
operates as a heater thermostat.
-63 Watchdog function has responded.
30
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• Switch off the unit at the mains switch,
wait 4 seconds and then switch the
unit on again.
Page 31
Appendix
-83
-108 The alarm latch of the protective
-116 The alarm latch of the protective
Excessive power consumption via USB
interface.
equipment is still active.
equipment is still active.
• Check inserted USB stick for defects
and replace as necessary. The USB-A
interface is not suitable for consumers
with a higher required current than the
maximum permissible current.
• Switch off the unit at the mains switch,
wait 4 seconds and then switch the
unit on again.
• Switch off the unit at the mains switch,
wait 4 seconds and then switch the
unit on again.
31
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