Heidolph MR Hei-Tec User manual

Leading Safety Standards Superior Ease of Use Reduced Cost of Ownership
Safe
Heating and Mixing
Magnetic Stirrer MR Hei-Standard, MR Hei-Tec, MR Hei-Connect
Operating manual must be read before initial start-up.
Please follow the safety instructions provided.
Please keep for future reference.
Magnetrührer MR Hei-Standard, MR Hei-Tec, MR Hei-Connect
Betriebsanleitung vor Erstinbetriebnahme unbedingt lesen.
Sicherheitshinweise beachten.
Für künftige Verwendung aufbewahren.
Operating Manual Page 2
Original-Betriebsanleitung Seite 40

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 personnel ............................................................................7
Obligations of the operator ..................................................................................7
Installation site ...........................................................................................7
Modications to the device............................................................................8
Safety of personnel......................................................................................8
Safety during use ...............................................................................................9
Disposal ............................................................................................................9
Device Description 10
Device overview ...............................................................................................10
MR Hei-Standard: overall view.....................................................................10
MR Hei-Standard: control panel ...................................................................10
MR Hei-Tec: overall view.............................................................................10
MR Hei-Tec: control panel ...........................................................................11
MR Hei-Connect: overall view ......................................................................11
MR Hei-Connect: control panel ....................................................................11
Start-Up 12
Setting up device .............................................................................................12
Connect/disconnect power cord ..........................................................................12
Switch device on and o....................................................................................13
Operation 14
Place vessels....................................................................................................14
Mixing.............................................................................................................15
Set speed and start rotation........................................................................15
Heating...........................................................................................................16
Set temperature ........................................................................................16
Show set parameters: MR Hei-Tec, MR Hei-Connect........................................17
Start heating.............................................................................................17
Stop heating .............................................................................................18
Operating Manual Page

Contents
Timer controlled mixing and heating: MR Hei-Connect ...........................................19
Set the timer ............................................................................................19
Activate the timer......................................................................................20
Show remaining time .................................................................................21
Stop and disable the timer ..........................................................................21
Switch the acoustic signal for the time on/o ................................................21
External temperature sensor Pt 1000 ..................................................................22
Heating with external temperature sensor: MR Hei-Tec, MR Hei-Connect ...........22
Interface MR Hei-Connect ..................................................................................25
Connecting and linking interfaces.................................................................25
Interface commands ..................................................................................27
Cleaning and Maintenance 29
Cleaning..........................................................................................................29
Maintenance ....................................................................................................29
Troubleshooting 30
Possible errors and how to resolve ......................................................................30
General ....................................................................................................30
MR Hei-Standard .......................................................................................30
MR Hei-Tec / MR Hei-Connect ......................................................................31
Assembly 32
Electrical connection .........................................................................................32
Mounting periphery devices ...............................................................................33
Connect external temperature sensor Pt 1000 ...............................................33
Disassembly and Storage 34
Dismantling, transportation and storage ..............................................................34
Dismantling ..............................................................................................34
Transportation and storage .........................................................................34
Accessories and Spare Parts 35
Scope of delivery..............................................................................................35
Accessories......................................................................................................35
Attachments 36
Technical data ..................................................................................................36
Service 37
Contact / Technical Service ................................................................................37
Warranty.........................................................................................................38
Conrmation of condition...................................................................................39

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 magnetic stirrers
MR Hei-Standard, MR Hei-Tec, MR Hei-Connect.
Version Alteration date
2.01 09/2018
Variants
The device is available in dierent variants. Certain features or functions are only avail-
able 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/opera-
tion-manuals#Magnetic Stirrers (MR Hei-Standard-Tec-Connect)
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 combi-
nation 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”.
This device was tested according to the following Directives*:
▪UL 61010-1 :2012/R:2016-04
CAN/CSA-C22.2 No. 61010-1:2012/U2:2016-04
▪UL 61010-2-010:2015
CAN/CSA-C22.2 NO. 61010-2-010:2015
▪UL 61010-2-051:2015
CAN/CSA-C22.2 No. 61010-2-051:2015
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:
▪heating
▪stirring
▪mixing
▪titrating
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
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.

7
Safety Instructions
Installation / electrical safety
▪The device may only be connected up if the available power supply voltage corre-
sponds 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 personnel
▪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.
▪The device must be installed on a rm stable and temperature resistant surface.
▪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 condi-
tions:
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.
Safety of personnel
➜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
➜Beware of the eect of magnetic elds on cardiac pacemakers or magetic sensitive
data media. Observe the according warning in chapter “Start-up”, “Setting up device”.
➜Wear the appropriate protective clothing when working on the device (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.
➜Do not spill liquids over the device or any parts of it.
➜Remove any accidentally spilled liquids immediatly.
➜Eliminate errors immediately.
➜Always switch the device OFF after use.
➜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.
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.

Device Description
10
Device Description
Device overview
MR Hei-Standard: overall view
Hotplate
(magnetic eld
underneath)
ON/OFF switch
(right side of device)
Control panel
MR Hei-Standard: control panel
Control light
unit ON/OFF
Speed control
knob:
set speed and
start / stop
rotation
Control light
heating up
Temperature control
knob:
set temperature
Heating button: start/stop heating
MR Hei-Tec: overall view
Hotplate
(magnetic eld
underneath)
ON/OFF switch
(right side of device)
Connection Pt 1000
(back side of device)
Control panel
Interface RS 232
(back side of device)
(only MR Hei-Connect)

Device Description
11
MR Hei-Tec: control panel
Select knob:
set speed and
temperature
Rotation button:
start/stop rotation
Display
Heating button:
start/stop heating
MR Hei-Connect: overall view
Hotplate
(magnetic eld
underneath)
ON/OFF switch
(right side of device)
Connection Pt 1000
(back side of device)
Control panel
Interface RS 232
(back side of device)
(only MR Hei-Connect)
MR Hei-Connect: control panel
Select knob:
set speed,
temperature and
timer
Rotation button:
start/stop rotation
Display
Timer button:
set/start/stop
timer
Heating button: start/stop heating

Start-Up
12
Start-Up
Setting up device
Warning:
Magnetic eld!
The magnetic eld beneath the hotplate could cause irritations with
cardiac pacemaker if you get too close.
Personnel with a cardiac pacemaker, implanted debrillator or dosing
pump should keep a minimum distance of 10 cm (4 inches) to the
device.
Warning:
Risk of slipping device!
As a result of vibrations generated during operation the device might
slide o the table top.
The surface must be smooth, clean and temperature resistant and
should be properly leveled.
➜Locate the shaker on a stable, horizontal surface.
➜Clean surface and feet with a damp cloth and ethanol regularly.
Connect/disconnect power cord
Connect power cord
The power cord comes with a three-wire
plug and recess on the bottom side.
Power cordUnit plug
The socket is located on the back side of
the device.
✓The device is switched OFF.
➜Connect device plug to the device
socket with the recess facing down.
➜Push plug up against socket until
securely attached.
➜Connect power plug to power socket.
Unit socket
Disconnect power cord
➜Disconnect power plug from power socket rst.
➜Then disconnect plug from socket on device.

Start-Up
13
Switch device on and o
The ON/OFF switch is situated on the right side of the device beneath the control panel.
Switch device on
➜Press ON/OFF switch on the right side.
✓The device is switched on.
MR Hei-Standard
✓The green operating indicator lights
up.
MR Hei-Tec, MR Hei-Connect
✓The display switches on and shows the
actual parameters. OFF ON/OFF switch ON
Switch device o
➜Press ON/OFF switch on the left side.
✓The device powers o.
MR Hei-Standard
✓The green operating indicator switches o.
MR Hei-Tec, MR Hei-Connect
✓The display switches o.

Operation
14
Operation
Place vessels
Caution:
Risk of breakage and spillage
If the stirring bars start rotation suddenly at high speed or the vessels
are not placed securely vessels might break or they may slip o and
spill the sample.
Prior to start heating and mixing ensure that all vessels are placed
with sample and stirring bars and that they are securely placed.
Heating bath accessories for round asks and beakers as well as attachments for water,
gas and evaporating distributors are available.
➜To place a number of vessels securely on plate use optional adaptors (see general
catalogue).
➜Single vessels with at bottoms like beakers may be placed directly on hotplate.
A single ask should be arranged in the middle of the hotplate.
Several asks should be distributed equally on the plate.

Operation
15
Mixing
When using device inside heating cabinets, make reference to
ambient conditions as stipulated in chapter “Safety Instructions”.
Set speed and start rotation
Warning:
Risk of poisoning!
Open vessels and too high speed may result in samples splashing.
Use vessels with narrow neck especially if sample is dangerous or
toxic.
Adjust speed step by step until you have reached the required rpm
settings.
Wear safety glasses and especially with dangerous and toxic samples
appropriate protective clothing.
Speed can be set between 100 rpm - 1,400 rpm.
➜Place vessel with sample and stirring bar on hotplate.
➜Turn item on with ON/OFF switch.
MR Hei-Standard
✓Operating indicator light is on.
➜Set speed with speed control knob.
✓Rotation starts immediately.
Speed control knob
Operating indicator light
MR Hei-Tec, MR Hei-Connect
➜Choose rotation setting with select
knob.
✓Rotation setting is marked with a frame.
➜Press select knob within 3 seconds.
➜Set required speed by turning knob.
➜Press rotation button.
➜Rotation button illuminates.
✓Rotation starts immediately.
✓The actual speed is shown in the
display.
Rotation framed:
Rotation setting selected (MR Hei-Connect)
Rotation button:
rotation started Select knob

Operation
16
Heating
Set temperature
Warning:
Risk of burning!
The hotplate can reach temperatures up to 300 °C.
If you work with temperatures above 50 °C wear safety gloves and
appropriate protective clothing.
Warning:
Risk of ignition!
Inammable samples may ignite with high temperatures.
If you work with inammable samples set temperature at least
25 °C lower than ignition point of sample.
There are two options to control heating:
▪Without external temperature sensor: temperature will be measured and controlled
via hotplate.
▪With external temperature sensor: temperature will be measured and controlled via
sensor directly in sample (see chapter “Assembly, Temperature sensor”).
You can set the following temperature range:
▪Hotplate / temperature sensor: between 20 °C and 300 °C (lower degrees depending
on ambient temperature).
Working without external temperature sensor:
Due to dierences in heat conductivity of various materials of vessels
and sample the temperature of hotplate should be set 1½ to 4 times
higher than the desired sample temperature.
MR Hei-Standard
✓Heating button is switched o.
➜Set required temperature with
temperature control knob.
Temperature control knob: set temperature
Control light Heating button: switched o

Operation
17
MR Hei-Tec, MR Hei-Connect
✓Actual temperature is shown in the
display.
➜Choose temperature setting with select
knob.
✓Temperature setting is marked with a
frame.
➜Press select knob within 3 seconds.
➜Set required temperature by turning
select knob.
➜Press select knob or wait 3 seconds.
✓Set temperature is saved.
✓The actual temperature appears in the
display.
Temperature framed: Temperature
setting selected (MR Hei-Connect)
Select knob
If no entries are made within 3 seconds the last entry will be saved
and the display switches to show actual parameters.
Working with external temperature sensor Pt 1000:
The display shows “ext” in addition. Setting temperature is exactly
the same procedure.
Show set parameters: MR Hei-Tec, MR Hei-Connect
✓Device is switched on.
✓Display shows actual parameters for speed and temperature.
➜Press select knob and hold pressed.
✓Display switches to show set parameters.
Start heating
✓Vessel with sample and stirring bar is
placed on hotplate.
✓Device is switched on.
➜Press heating button.
✓Heating button illuminates.
✓Heating starts immediately.
✓The actual temperature is shown in the
display.
Heating button
Heating o Heating on

Operation
18
MR Hei-Standard
✓In addition to heating button, the
control light for heating up will
illuminate.
✓Control light will be illuminated as long
as set temperature is not reached.
✓When set temperature is reached the
control light for heating up will go out.
Temperature control knob
Control light: heating up
Heating button: Heating on
MR Hei-Tec, MR Hei-Connect
✓The actual temperature is shown in the
display.
✓An additional heating symbol will
be shown in the display as long as set
temperature is not reached.
✓When set temperature is reached the
heating symbol will disappear.
Actual temperature (MR Hei-Connect)
Heating button: Heating on
Temperature can be adjusted any time when heating is on.
The device is equipped with a residual heat indicator.
✓If heating is switched o and temperature is above 50 °C, the
heating button will blink orange.
✓The illumination of the heating button will switch o automatically,
when temperature decreases below 50 °C.
The residual heat indicator does not function when device is switched
OFF via main switch! When switched ON again, residual heat will
function again.
Stop heating
➜Press heating button.
✓Illumination of heating button will go out.
✓Heating is switched o.
A power failure will stop heating and mixing and put device on stand
by. Set temperature and speed will be saved.

Operation
19
Timer controlled mixing and heating:
MR Hei-Connect
Using the timer, you can set the time for mixing and separately the time for heating.
▪The time can be set between one and 999 minutes.
▪An acoustic signal sounds when the timer has nished.
Set the timer
✓The device is switched on.
✓Rotation, heating and timer are
switched o.
➜Press the clock button.
✓The clock control light illuminates.
✓The rotation time is underlined
ashing.
✓The respective set timeS for rotation
and heating are displayed.
➜Increase or decrease the rotation time
by turning the select knob.
➜Press the select knob to conrm the
rotation time.
Mixing time
Clock button
Select knob
✓The heating time is underlined
ashing.
➜Increase or decrease the heating time
by turning the select knob.
➜Press the select knob to conrm the
heating time.
✓The display changes from the time to
the indication of speed and heating.
Heating time
Clock button
The set values are accepted automatically after 10 seconds of
inactivity.
Warning: Risk of burning! Risk of poisoning!
Superheating may occur if the heating time is longer than the rota-
tion time. Splashes caused by gas bubbles can cause burns and,
depending on the sample used, toxic fumes can lead to poisoning.
▪Always set the rotation time about 5 minutes longer than the
heating time.
▪Always start the rotation rst and then heating.
▪Always stop heating rst and then the rotation.

Operation
20
Warning: Risk of burning! Risk of injury!
The setting "- - -" will be ignored by the timer. This means with this
setting the rotation or heating function runs without timer,
respectively until the function is switched o.
Especially for the heating time, check if this setting is desired. When
the clock button and the heating button are illuminated simultaneously,
the timer for rotation has expired. Heating must then be stopped
manually!
Activate the timer
The timer is always started for the function that you subsequently switch on.
✓The device is switched on.
✓Rotation, heating and timer are
switched o.
➜Activate the timer using the clock
button.
➜Press he select knob to conrm the set
time for rotation and heating.
➜Start the rotation using the rotation
button.
Clock button
Heating buttonRotation button
✓The rotation starts.
✓The active timer is indicated by a rotating light ring around the clock button.
✓The set time for the rotation begins to count down.
➜Start heating using the heating button.
✓The set time for heating begins to count down.
✓Once the set time has expired, the respective function stops.
✓An acoustic signal sounds as soon as the time for the function with the longest
duration has elapsed.
As long as the ring around the clock button rotates, the timer is
active with a dened time.
If the ring around the clock button is permanently lit and one of both
rings around the function buttons is lit at the same time, the timer
has expired. The respective function must be switched o manually.