Heidolph Hei-TORQUE Core User manual

Leading Safety Standards Superior Ease of Use Reduced Cost of Ownership
Overhead Stirrers Hei-TORQUE Core
Operating manual must be read before initial start-up.
Please follow the safety instructions provided.
Please keep for future reference.
Laborrührer Hei-TORQUE Core
Betriebsanleitung vor Erstinbetriebnahme unbedingt lesen.
Sicherheitshinweise beachten.
Für künftige Verwendung aufbewahren.
Operating Manual Page 2
Original-Betriebsanleitung Seite 34
Powerful
Stirring

Contents
Inhaltsverzeichnis
About this Document 4
Version and variants ...........................................................................................4
About this manual ..............................................................................................4
Symbols and keywords........................................................................................5
Safety Instructions 6
General safety instructions...................................................................................6
EU Declaration of Conformity.........................................................................6
Intended use...............................................................................................6
Installation / electrical safety .......................................................................7
Qualications of employees...........................................................................7
Obligations of the operator ..................................................................................7
Installation site ...........................................................................................7
Modications to the device............................................................................8
Employee safety..........................................................................................8
Safety during use ...............................................................................................9
Disposal ............................................................................................................9
Device Description 10
Device overview ...............................................................................................10
Hei-TORQUE Core: Overall view ...................................................................10
Hei-TORQUE Core: Display ..........................................................................10
Start-Up 11
Setting up the device ........................................................................................11
Connecting/disconnecting the power supply cable .................................................12
Switching the device on and o ..........................................................................12
Operation 13
Setting the speed .............................................................................................13
Switching the rotation on and o ........................................................................14
Switching on the rotation............................................................................15
Switching o the rotation............................................................................15
Rotation with timer function...............................................................................16
Setting and saving the timer .......................................................................16
Starting the rotation with the timer..............................................................18
High-speed function..........................................................................................19
Chuck .............................................................................................................20
Installing the impeller ................................................................................20
Removing the impeller................................................................................21
Operating Manual

Contents
Cleaning and Maintenance 22
Cleaning..........................................................................................................22
Cleaning the chuck ....................................................................................22
Maintenance ....................................................................................................22
Troubleshooting 23
Malfunctions and troubleshooting........................................................................23
Assembly 24
Electrical connection .........................................................................................24
Support rod and chuck ......................................................................................25
Mounting the support rod............................................................................25
Dismantling the chuck ................................................................................25
Shaft guard .....................................................................................................26
Dismantling and Storage 27
Dismantling, transportation and storage ..............................................................27
Dismantling ..............................................................................................27
Transportation and storage .........................................................................27
Accessories and Spare parts 28
Scope of delivery..............................................................................................28
Accessories......................................................................................................28
Attachments 29
Technical data ..................................................................................................29
Recommended speeds................................................................................30
Performance range.....................................................................................30
Service 31
Contact / Technical Service ................................................................................31
Warranty.........................................................................................................32
Conrmation of condition...................................................................................33

About this Document
4
About this Document
Copyright
This operating manual is protected by copyright and is exclusively intended for the
internal use of the purchaser.
Handing over this operating manual to third parties, reproducing it in any type or form
– in part or in full – and utilizing and/or communicating its contents is prohibited without
prior written approval from the manufacturer.
Any violations will result in an obligation to provide compensation for damages. Other
claims remain unaected.
Version and variants
Version
This manual describes the function, operation and maintenance of the Hei-TORQUE Core
laboratory stirrer.
Version Alteration date
1.0 08/2019
Variants
The device is available in dierent variants. Certain features or functions are only
available in specic product variants. These variants are described in this operating
manual.
About this manual
This operating manual is an integral part of the device described here.
➜Carefully read through this operating manual and observe all of the
safety instructions and warnings notices.
➜Ensure that every user has carefully read the operating manual
before using the device for the rst time.
➜Store this operating manual so that it is accessible to all users at
all times.
➜Pass the operating manual on to any subsequent owner.
The current version of this operating manual can also be found at:
https://heidolph-instruments.com/en/service/downloads/operation-
manuals#Overhead Stirrers (Hei-TORQUE Core).
In addition, also observe the local regulations at the installation site.

5
About this Document
Symbols and keywords
Standardized symbols and signal words are used in this operating manual to warn against
any dangers and provide important instructions. These instructions must be strictly
observed to avoid accidents and damage.
The following terms and basic symbols are used:
Symbol Additional signal words / explanation
Warning
signs
The yellow triangle indicates hazardous situations. It is used in
combination with the following signal words:
DANGER:
Indicates a hazardous situation which, if not avoided, will result in
serious injury or death.
WARNING:
Indicates a hazardous situation which, if not avoided, may result in
serious injury or death.
CAUTION:
Indicates a hazardous situation which, if not avoided, may result in
property damage and minor or moderate injury.
Prohibitory
signs Prohibited:
The red circle indicates a situation that should be avoided under all
circumstances and which, if not avoided, may result in serious injury
or death.
Mandatory
signs Must be observed:
The blue circle indicates important information. Please observe this
information to avoid any property damage.
Other symbols used:
Symbol Description
➜Handling instruction, action required
✓Result of action
▪
▪
▪
List of information
a.
b.
c.
List of variants

Safety Instructions
6
Safety Instructions
General safety instructions
EU Declaration of Conformity
This device complies with the following EC-Directives*:
▪2006/42/EC Machinery Directive
▪2014/30/EU Electromagnetic Compatibility Directive
*Also see the attachment “EU Declaration of Conformity”.
The device has been manufactured according to state-of-the-art technology and in
compliance with recognized safety regulations. However, risks may still arise during
installation, operation and maintenance.
➜Please ensure that the operating manual is available at all times.
The device may only be used under the following conditions:
➜Only operate the device if it is in a technically perfect condition.
➜Only operate the device if you are properly aware of the risks and required safety
measures.
➜Only operate the device in accordance with the instructions given in this operating
manual.
➜If any information is ambiguous or missing, ask your superior or contact the
manufacturer.
➜Do not operate anything on the device without authorization.
➜Only use the device in accordance with its intended use.
Intended use
The device may only be operated by authorized personnel.
The device is suitable for the
following uses:
▪Stirring
▪Mixing
▪Degassing
▪Emulsifying
▪Suspension
The device may be operated
in research laboratories,
other laboratories and
production facilities in the
following sectors:
▪Chemistry
▪Pharmacy
▪Biology
▪Environmental analytics
▪Basic research
▪Similar research laboratories
Uninteded use/Reasonable foreseeable misuse
Any use which deviates from the device‘s intended use is considered to be improper. The
manufacturer is not liable for damage that occurs as a result. The risk is borne by the
operator alone.
When used in medical and food sectors the operator alone is responsible for compliance
with the applicable regulations and standards.

7
Safety Instructions
Installation / electrical safety
▪The device may only be connected up if the available power supply voltage corres-
ponds to the information stated on the rating plate for the device.
▪The power supply connection must be easily accessibly at all times.
▪An RCD circuit breaker (residual current circuit breaker) must be tted to the
electrical system in the building so that the device is disconnected from the power
circuit in the event of a fault.
▪Repairs may only be performed by electricians authorised by Heidolph Instruments.
▪Never operate the device with a damaged power cord.
▪Always turn the device OFF and disconnect the power cord before carrying out any
maintenance or repair work.
Qualications of employees
▪The device may only be operated by trained personnel.
▪The device may only be operated by persons who have been instructed and super-
vised in its proper use by trained specialist personnel.
▪The device may only be operated by specialist personnel who are above the legal
minimum age.
▪Other persons may only work on the device under the constant supervision of experi-
enced and trained specialist personnel.
▪This operating manual must be read and understood by all persons working with the
device.
▪Personnel must receive safety training that ensures responsible and safe working
practices.
Obligations of the operator
Installation site
▪The device must be installed in a suitable location.
▪Ensure that the device and all of its components are easily accessible at all times.
▪Maintain a sucient safety clearance to, in particular, any moving and/or hot
equipment components.
▪It is not permitted to place or store any objects such as accessories, tools or
chemicals within this clearance area during operation.
▪All screw connections must be securely tightened.
▪It is not permitted to operate the device near to highly ammable or explosive
substances.
▪Operate the device in conjunction with an extractor hood, if working with potential
harmful media (see DIN EN 14175 and DIN 12924).

Safety Instructions
8
▪The device is designed for indoor use only and under the following ambient conditions:
▪
Ambient temperature 5 - 31 °C at 80 % relative humidity
32 - 40 °C decreasing linearly to a
maximum 50 % relative humidity
Installation altitude 0 - 2,000 m above sea level
Contamination level 2
Overvoltage category II
Permissible supply deviations ± 10 %
▪If the device is operated in corrosive atmospheres, the service life of the device will
decrease based on the concentration, duration and frequency of the exposure to the
corrosive atmosphere e.g. concentrated hydrochloric acid (HCI).
Modications to the device
▪It is not permitted to make any unauthorised modications or changes to the device.
▪Do not attach or install any parts that have not been approved by the manufacturer.
▪Unauthorized modications or changes will void the EC Declaration of Conformity for
the device and operation of the device will no longer be permitted.
▪The manufacturer is not liable for any damage, dangers or injuries that result from
unauthorized modications and changes or due to the non-observance of the instruc-
tions in this manual.
Employee safety
➜Ensure that the device is only operated by qualied specialist personnel and trained
employees.
➜Observe the following instructions to avoid any personal injuries and property
damage:
- Laboratory regulations
- Accident prevention regulations
- Hazardous Substance Act
- Other generally accepted occupational health and safety regulations
- Local regulations

9
Safety Instructions
Safety during use
➜Wear the appropriate clothing when working on the device (protective clothing,
protective glasses and, if necessary, safety gloves).
➜Do not use the device in potentially explosive areas. The device is not protected
against explosion. There is no explosion or ATEX protection available.
➜Do not carry out work with naked ames in the vicinity of the device (risk of
explosion).
➜Do not operate or assemble devices in the vicinity which are emission or radiation
sources (electromagnetic waves) for the frequency range (3*1011 Hz to 3*1015 Hz).
➜Do not operate or assemble appliances in the vicinity of the device which constitute
emission or radiation sources for ionizing radiation or in the ultrasonic range.
➜Do not operate the device where adiabatic compression or shock waves might occur
(shock wave combustion).
➜Do not use substances, where the energy input due to mixing might pose a hazard.
➜Only use impellers approved be Heidolph Instruments.
➜Do not spill liquids over the device or any parts of it.
➜Remove any accidentally spilled liquids immediatly.
➜Eliminate errors immediately.
➜Avoid putting pressure on the display when you are not operating the device.
➜Do not use abrasive material to clean the surface. Only wipe with damp cloth.
➜Always switch the device OFF after use.
Disposal
➜Check the device components for hazardous substances and
solvents.
➜Clean all components before disposal.
➜Dispose of the device in accordance with the relevant
national regulations.
➜Dispose of the packaging material in accordance with the
appropriate national regulations.
The PE foam of the packaging material is:
▪made of 65% recycled material
▪recyclable up to 100%

Device Description
10
Device Description
Device overview
Hei-TORQUE Core: Overall view
Rotary knob:
Setting speed and timer,
starting/stopping
rotation
Chuck
ON/OFF switch
Display
High-speed buttonTimer button
Hei-TORQUE Core: Display
00:00:03
375
375
Speed set: 375
375
Current speed
Time display
(operating time and timer)
Rotation display
Set speed
Performance indication
Timer active

Start-Up
11
Start-Up
Setting up the device
The device needs to be mounted on a stand or a laboratory lattice with the aid of the
supplied support rod before start-up (see chapter “Assembly, support rod and chuck”,
section “Mounting the support rod”).
Attention:
Risk of the device slipping!
If the device is mounted on a stand, the vibrations generated during
operation can cause the device to move across the installation surface
and slide o.
The installation surface must be smooth and clean. It must also be as
level as possible.
Attention:
Possible loosening of the device!
The vibrations generated during operation could cause clamping
screws, which are used to connect the device to the stand or the
laboratory lattice, to loosen.
Carefully tighten all of the clamping screws. Check that the screws are
securely tightened at regular intervals.
Setting up the device
➜Assemble the device on a solid, smooth and level surface.
➜Clean the installation surface and the base of the stand at regular intervals.

Start-Up
12
Connecting/disconnecting the power
supply cable
Connecting the power supply cable
The device is supplied with a three-pole
power supply cable which features a
safety clip to hold the female connector in
position.
Female
connector
Power supply
cable
Safety
clip
✓The device is switched o.
➜Connect the female connector of the
power supply cable to the device
connector.
✓The female connector is securely
engaged when a click is heard.
➜Insert the male connector of the
power supply cable into the mains
socket-outlet.
Device connector
Disconnecting the power supply cable
➜Disconnect the power supply cable from the mains socket-outlet.
➜Press the safety clip to disengage and to disconnect the female connector of the
power supply cable from the device connector.
Switching the device on and o
Switching on the device
➜Push the ON/OFF switch upwards.
✓The device is switched on.
✓The current software version is shown
briey.
Switching o the device
➜Push the ON/OFF switch downwards.
✓The device is switched o.
ON ON/OFF switch OFF

Operation
13
Operation
Setting the speed
The overhead stirrer rotates in a clockwise direction. The speed can be set to between
20 rpm and 2,000 rpm (also see chapter “Attachments, Technical data”.)
Set the speed depending on the impeller (see chapter “Technical data”,
section “Recommended speeds”).
✓The device is switched on.
➜Turn the control knob in a clockwise
direction.
✓The speed increases.
➜Turn the control knob in an
anticlockwise direction.
✓The speed decreases.
Increase speed Reduce speed
✓The set speed is shown on the display
next to “Speed set:”.
00:00:00
0
375
Speed set: 375
Set speed
You can adjust the speed upwards or downwards at any time during ongoing operation
using the control knob.

Operation
14
Switching the rotation on and o
Warning:
Risk of injury!
Shattering stirring vessels may cause serious injuries due to splintering
parts and escaping liquids.
▪Always wear protective clothing in the vicinity of the laboratory stirrer
when it is in operation.
▪Never work with impellers that are unbalanced.
▪Never work with the laboratory stirrer if the chuck is unbalanced.
▪Select a stirring vessel that has a large enough diameter to allow the
stirrer to rotate freely without touching the vessel.
Warning:
Risk of injury! Risk of entanglement!
Rotating parts could cause injuries to the user if their hair, clothing or
jewellery comes into contact with or become entangled in these parts.
▪Never touch any rotating parts.
▪Do not wear any loose clothing, e.g. belts or ties, which could
become entangled in the rotating parts.
▪Do not wear long necklaces or bracelets.
▪If you have long hair, wear a suitable head covering that keeps the
hair in place.
Warning:
Risk of poisoning! Risk of injury!
Depending on the samples being used, the stirring process could result
in chemical reactions and the release of gases.
If necessary, operate the device under an enclosed, ventilated fume
cupboard.
Warning:
Risk of injury!
Switching on the stirrer at excessive speeds can result in splashing and
could cause injuries depending on the properties of the samples.
Initially select a lower speed and increase it gradually as required.

Operation
15
Switching on the rotation
➜Press the control knob.
✓The impeller starts to rotate.
✓The rotational speed increases within
a short period of time to match the set
speed.
✓The current speed is shown on the
display below the set speed.
00:00:03
375
375
Speed set: 375
Current speed
✓The rotation display on the left
lower edge of the screen signals that
the rotation has been activated by
indicating a rotational motion.
✓The time display shows how long the
device has been rotating.
00:00:03
375
375
Speed set: 375
Current operating time
Rotation display
Overload operation
If your medium has a high viscosity, the device can reach the overload range.
✓During overload operation, the right
section of the performance indication
ashes for a maximum of 2 minutes.
✓The rotational speed is slowed during
this time to reduce the load.
✓If the load does not reduce despite
the lower speed, the rotation will be
stopped.
(Also see chapter “Technical data”,
section “Performance range”).
00:00:03
375
375
Speed set:
375
375
Performance indication
In the event of an overload, check whether the impeller is blocked.
It is possible that the viscosity of your medium is too high for this
laboratory stirrer.
Switching o the rotation
➜Press the control knob.
✓The device stops rotating.
✓The rotation display is stopped.
✓The current operating time is displayed until a new stirring process is started by
pressing the control knob or if you jump to the timer submenu.

Operation
16
Rotation with timer function
The timer can be used to set a specic time period for the stirring process.
▪The time can be adjusted from 1 second to 99 hours, 59 minutes and 59 seconds.
▪A countdown will show the remaining time in hours, minutes and seconds.
Setting and saving the timer
➜Press the “Timer” button. Timer button
✓The timer submenu will be displayed.
✓The value for the last time period
saved will be displayed.
✓The “Timer set” line is highlighted.
Timer set:
OFF
ON
00 : 02 : 05
hh mm ss
Timer submenu
➜Press the control knob to jump
between the time settings on this line.
✓The hours setting “hh” is the rst value
to be highlighted.
➜Turn the control knob to move the
value upwards or downwards as
required.
➜Press the control knob to conrm the
value and jump to the next value.
Timer set:
OFF
ON
00
: 02 : 05
hh mm ss
Hours setting selected

Operation
17
➜Also set the minutes “mm” and seconds “ss” in the same way.
✓After conrming the value for the seconds, the display will highlight the option “ON”.
As soon as the desired time period has been set, you have 2 options:
▪Activate the timer immediately
▪Save the set time period and activate the timer later
Activate the timer immediately
➜Conrm the set time period by
pressing “ON”.
✓You return to the main menu.
✓The clock symbol will be shown in
the top left of the display to indicate
that the timer has been activated.
Timer set:
OFF
ON
00 : 02 : 05
hh mm ss
Timer switched on
Activate the timer later
✓You have set the desired time period in
the timer submenu.
➜Conrm the set time period by
pressing “OFF”.
✓You return to the main menu.
✓The set value is saved.
Timer set:
OFF
ON
00 : 02 : 05
hh mm ss
Timer switched o
➜When you are ready to activate the timer, call up the timer submenu and conrm the
set time period by pressing “ON”.

Operation
18
Starting the rotation with the timer
✓The clock symbol will be displayed
in the top left of the display to indicate
that the timer has been activated.
✓The display on the lower edge of the
screen shows the set time.
➜Turn the control knob to set the
desired speed.
➜Press the control knob to start the
rotation.
00:01:30
375
375
Speed set:
375
Clock symbol: Timer activated
✓The display on the lower edge of the
screen counts down and shows the
remaining time in hours, minutes and
seconds.
✓Even if the timer has been activated, it
is still possible to change the speed via
the control knob or stop the rotation at
any time.
Timer: remaining time
00:01:30
375
375
Speed set: 375

Operation
19
High-speed function
The device is equipped with a high-speed function.
✓The device is switched on.
➜Press and hold down the “High-speed”
button.
High-speed button
✓The rotation will start if not already
active and the speed increases to the
maximum speed irrespective of the
rotational speed that was previously
set.
✓As soon as you release the
“High-speed” button, the rotation
will either stop or it will return to the
original rotational speed.
198
6
00:00:30
375
Speed set:
375
The high-speed function can be started at any time, irrespective of
whether the rotation is switched on or o or whether the timer has
been activated or deactivated.
If the timer has been activated and the rotation is switched o,
the duration of the high-speed stirring process is not added to the
“Duration” display.

Operation
20
Chuck
Warning:
Risk of injury!
If the device is switched on when opening or closing the chuck, it is
possible for the device to rotate due to unintentionally touching the
control knob or the high-speed button and this could result in injuries.
Only open and close the chuck when the device is switched o.
Installing the impeller
Warning:
Risk of injury!
If the chuck has not been closed properly, the impeller may become
loose when it rotates and cause injuries.
Fasten the chuck securely. Periodically check that the chuck is securely
fastened after prolonged operation when the device has been switched
o.
✓The device is switched o.
➜Guide the impeller from below into the
chuck until it has reached the correct
height.
➜Tightly hold the impeller and the chuck
with one hand.
➜Hold the impeller in this position as
centrally as possible and then carefully
close the clamping ring in a clockwise
direction until you feel some resistance
from the impeller.
➜Align the impeller in the centre of the
chuck and close the clamping ring in a
clockwise direction until you hear three
clicks.
Clamping ring
Impeller
Chuck
Warning:
Risk of injury! Damage to the device:
If the impeller is not properly centred, vibrations could build up and
cause instability and this could result in injuries.
An incorrectly mounted impeller can cause permanent damage by
unbalancing the laboratory stirrer or the impeller.
Carefully center the impeller before tightening it in the clamping ring.