Fritsch LABORETTE 27 User manual

LABORETTE 27
ROTARY CONE SAMPLE DIVIDER
Operating instructions
27.14XX.00
Valid from serial number 0100
Read the instructions prior to performing any task!
Translation of the original operating instructions

Version 10/2014 Index 003
Fritsch GmbH
Milling and Sizing
Industriestraße 8
55743 Idar-Oberstein
Telephone: [phone]
Fax: [phone]
email: [email protected]
Internet: www.fritsch.de

Certifications and CE conformity
Fritsch GmbH has been certified by the TÜV-Zertifizierungsgemeinschaft
e.V.
An audit certified that Fritsch GmbH conforms to the requirements of
the DIN EN ISO 9001:2008.
The enclosed Conformity Declaration lists the guidelines the FRITSCH
instrument conforms to, to be able to bear the CE mark.
Certification
CE Conformity
Certifications and CE conformity
- 3 -

Table of contents
1Basic structure............................................................................... 6
2 Safety information and use........................................................... 7
2.1 Requirements for the user..................................................... 7
2.2 Scope of application............................................................... 7
2.2.1 Operating principle............................................................. 8
2.3 Obligations of the operator................................................... 8
2.4 Information on hazards and symbols used in this manual.... 9
2.5 Device safety information.................................................... 12
2.6 Hazardous points................................................................. 13
2.7 Electrical safety.................................................................... 13
3 Technical data.............................................................................. 14
3.1 Dimensions.......................................................................... 14
3.2 Weight.................................................................................. 14
3.3 Voltage................................................................................. 14
3.4 Electrical fuses..................................................................... 14
3.5 Technical design................................................................... 14
3.6 Speed................................................................................... 14
4 Installation................................................................................... 15
4.1 Transport............................................................................. 15
4.2 Unpacking............................................................................ 15
4.3 Setting up............................................................................. 15
4.3.1 Fitting the dividing head................................................... 16
4.4 Electrical connection............................................................ 16
5 Initial start-up.............................................................................. 17
5.1 Switching on......................................................................... 17
5.2 Switching off........................................................................ 17
6 Using the device........................................................................... 18
6.1 General preparations........................................................... 18
6.1.1 Screwing the glass laboratory bottles onto the 1:8 or
1:10 dividing head............................................................. 18
6.1.2 Division ratios................................................................... 18
6.1.3 Setting up the "LABORETTE 24" sample feeder................ 20
6.2 Dividing solid materials........................................................ 20
6.2.1 Example of highly adhesive powder................................. 21
6.3 Dividing suspensions and highly adhesive materials........... 21
6.4 Taking samples..................................................................... 22
7 Cleaning........................................................................................ 23
8 Maintenance................................................................................ 24
9 Disposal........................................................................................ 25
10 Guarantee terms.......................................................................... 26
Table of contents
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11 Exclusion of liability..................................................................... 28
12 Safety logbook............................................................................. 30
13 Index............................................................................................. 34
Table of contents
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1 Basic structure
1 Funnel
2 Funnel holder
3 Dividing head lid
4 Dividing head
5 Sample bottles
6 Main switch
7 Fuse
Basic structure
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2 Safety information and use
2.1 Requirements for the user
This operating manual is intended for persons assigned with operating
and monitoring the Fritsch LABORETTE 27. The operating manual and
especially its safety instructions are to be observed by all persons
working on or with this device. In addition, the applicable rules and regu-
lations for accident prevention at the installation site are to be observed.
Always keep the operating manual at the installation site of the LABOR-
ETTE 27.
People with health problems or under the influence of medication,
drugs, alcohol or exhaustion must not operate this device.
The LABORETTE 27 may only be operated by authorised persons and
serviced or repaired by trained specialists. All commissioning, mainte-
nance and repair work may only be carried out by technically qualified
personnel. Qualified personnel are persons who, because of their educa-
tion, experience and training as well as their knowledge of relevant
standards, regulations, accident prevention guidelines and operating
conditions, are authorised by those responsible for the safety of the
machine to carry out the required work and are able to recognize and
avoid possible hazards as defined for skilled workers in IEC 364.
In order to prevent hazards to users, follow the instructions in this
manual.
Malfunctions that impair the safety of persons, the LABORETTE 27 or
other material property must be rectified immediately. The following
information serves both the personal safety of operating personnel as
well as the safety of the products described and any devices connected
to them: All maintenance and repair work may only be performed by
technically qualified personnel.
This operating manual is not a complete technical description. Only the
details required for operation and maintaining usability are described.
Fritsch has prepared and reviewed this operating manual with the
greatest care. However, no guarantee is made for its completeness or
accuracy.
Subject to technical modifications.
2.2 Scope of application
The LABORETTE 27 is a rotary cone sample divider for representative
division of samples in the laboratory. It divides bulk solids and particle
suspensions from the original amount filled into equal parts, whereby
each partial amount is representative of the entire collective.
Inorganic and organic samples are prepared for analysis, quality control
or material testing in such a way that after the analysis of a single shot,
reliable statements can be made about the physical and chemical prop-
erties of the entire collective.
Safety information and use
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2.2.1 Operating principle
In the LABORETTE 27, two different division principles are combined in
one device such that the advantages of both can be optimally used:
The commodity stream - guided by a funnel - impacts on a cone. By
sliding off its lateral surface, an initial division into individual streams
takes place. This process is known as "coning" and is successfully used
mainly when dividing large quantities.
In the case of the LABORETTE 27, the fanned out commodity stream is
led into individual channels at the lower end of the cone surface and col-
lected in glass laboratory bottles.
The relatively high rotational speed of the cone prevents inhomogeneity
in the commodity stream and demixing during apportionment. Through
rotation of the cone, the probability of falling into a certain bottle is
equal for all components of the commodity stream.
Additionally, the divided commodity stream is accelerated outwards
through the centrifugal force of rotation and flows more easily through
the guide channels into the collection bottles. The guide channels inter-
penetrate. The commodity stream is divided up and deposits are
reduced through the sharp lines of separation between the channels.
The high rotational speed of the turning dividing cone leads to an
extremely high division ratio, i.e. each sample consists of a very large
number of single shots. A high division ratio is, however, one of the most
important prerequisites for a good, representative sample division.
2.3 Obligations of the operator
Before using the LABORETTE 27, this manual is to be carefully read and
understood. The use of the LABORETTE 27 requires technical knowledge;
only commercial use is permitted.
The operating personnel must be familiar with the content of the oper-
ating manual. For this reason, it is very important that these persons
actually receive the present operating manual. Ensure that the operating
manual is always near the device.
The LABORETTE 27 may exclusively be used within the scope of applica-
tions set down in this manual and within the framework of guidelines
put forth in this manual. In case of non-compliance or improper use, the
customer assumes full liability for the functional capability of the LABOR-
ETTE 27 and for any damage or injury arising from failure to fulfil this
obligation.
By using the LABORETTE 27 the customer agrees with this and recognizes
that defects, malfunctions or errors cannot be completely excluded. To
prevent risk of damage to persons or property or of other direct or indi-
rect damage, resulting from this or other causes, the customer must
implement sufficient and comprehensive safety measures for working
with the LABORETTE 27.
Safety information and use
- 8 -

Neither compliance with this manual nor the conditions and methods
used during installation, operation, use and maintenance of the LABOR-
ETTE 27 can be monitored by Fritsch GmbH. Improper execution of the
installation can result in property damage and thus endanger persons.
Therefore, we assume absolutely no responsibility or liability for loss,
damage or costs that result from errors at installation, improper opera-
tion or improper use or improper maintenance or are in any way con-
nected to these.
The applicable accident prevention guidelines must be complied with.
Generally applicable legal and other obligatory regulations regarding
environmental protection must be observed.
2.4 Information on hazards and symbols used in this manual
Safety information in this manual is designated by symbols. Safety infor-
mation is introduced by keywords that express the extent of the hazard.
DANGER!
This symbol and keyword combination points out a directly
hazardous situation that can result in death or serious
injury if not avoided.
WARNING!
This symbol and keyword combination points out a possibly
hazardous situation that can result in death or serious
injury if not avoided.
CAUTION!
This symbol and keyword combination points out a possibly
hazardous situation that can result in slight or minor injury
if not avoided.
NOTICE!
This symbol and keyword combination points out a possibly
hazardous situation that can result in property damage if
not avoided.
Safety information
Safety information and use
- 9 -

ENVIRONMENT!
This symbol and keyword combination points out a possibly
hazardous situation that can result in environmental
damage if not avoided.
To call attention to specific hazards, the following symbols are used in
the safety information:
DANGER!
This symbol and keyword combination points out a directly
hazardous situation due to electrical current. Ignoring infor-
mation with this designation will result in serious or fatal
injury.
DANGER!
This symbol and keyword combination designates contents
and instructions for proper use of the machine in explosive
areas or with explosive substances. Ignoring information
with this designation will result in serious or fatal injury.
DANGER!
This symbol and keyword combination designates contents
and instructions for proper use of the machine with com-
bustible substances. Ignoring information with this designa-
tion will result in serious or fatal injury.
WARNING!
This symbol and keyword combination points out a directly
hazardous situation due to movable parts. Ignoring infor-
mation with this designation can result in hand injuries.
WARNING!
This symbol and keyword combination points out a directly
hazardous situation due to hot surfaces. Ignoring informa-
tion with this designation can result in serious burn injuries
due to skin contact with hot surfaces.
Special safety information
Safety information and use
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Safety information can refer to specific, individual procedure instruc-
tions. Such safety information is embedded in the procedure instructions
so that the text can be read without interruption as the procedure is
being carried out. The keywords described above are used.
Example:
1. Loosen screw.
2.
CAUTION!
Risk of entrapment at the lid.
Close the lid carefully.
3. Tighten screw.
This symbol emphasises useful tips and recommendations
as wells as information for efficient operation without mal‐
function.
To emphasise procedure instructions, results, lists, references and other
elements, the following designations are used in this manual:
Designation Explanation
1., 2., 3. ...
Step-by-step procedure instructions
ðResults of steps in the procedure
References to sections in this manual and rele-
vant documentation
Lists without a specific order
[Button] Operating elements (e.g. push button, switch),
display elements (e.g. signal lamps)
‘Display’ Screen elements (e.g. buttons, function key
assignment)
Safety information in the procedure
instructions
Tips and recommendations
Further designations
Safety information and use
- 11 -

2.5 Device safety information
nOnly use original accessories and original spare parts. Failure to
observe this instruction can compromise the safety of the machine.
nAccident-proof conduct is to be strictly followed during all work.
nComply with all currently applicable national and international acci-
dent prevention guidelines.
CAUTION!
Wear hearing protection!
If a noise level of 85 dB(A) is reached or exceeded, ear pro-
tection should be worn to prevent hearing damage.
WARNING!
The maximum accepted concentration (MAC) levels of the
relevant safety guidelines must be observed; if necessary,
ventilation must be provided or the machine must be oper-
ated under an extractor hood.
DANGER!
Explosion hazard!
– When dividing oxidizable substances, e.g. metals or
coal, there is a risk of spontaneous combustion (dust
explosion) if the share of fine particles exceeds a cer-
tain percentage. When dividing these kinds of sub-
stances, special safety measures must be taken and the
work must be supervised from a specialist.
–The LABORETTE 27 is not explosion protected and is
not designed to divide explosive materials.
nDo not remove the information signs.
NOTICE!
Immediately replace damaged or illegible information signs.
nUnauthorised alteration of the LABORETTE 27 will void Fritsch's dec-
laration of conformity to European directives and void the guar-
antee.
nOnly use the LABORETTE 27 when it is in proper working order, as
intended and in a safety- and hazard-conscious manner adhering to
the operating manual. In particular, immediately rectify any malfunc-
tions that could pose a safety hazard.
nIf, after reading the operating manual, there are still questions or
problems, please do not hesitate to contact our specialised per-
sonnel.
Please observe!
Safety information and use
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2.6 Hazardous points
nOnly operate the rotary cone sample divider with firmly screwed in
bottles or collection vessels!
nOnly empty the rotary cone sample divider after it has come to a
complete standstill!
nDo not reach into the device when it is running!
nCrushing hazard at the rotating bottles! To avoid this hazard, use the
Perspex protective device (Order no.: 27.1500.17)
2.7 Electrical safety
The main switch (6) separates the device from the mains on two poles.General information
Safety information and use
- 13 -

3 Technical data
3.1 Dimensions
460 x 270 x 450 mm (height x width x depth)
3.2 Weight
Net: 14 kg
Gross: 17 kg
3.3 Voltage
n230 V/1~ single-phase, 50 - 60 Hz, 90 W
n115 V/1~ single-phase, 50 - 60 Hz, 90 W
3.4 Electrical fuses
The device fuse is in the housing inside the front panel (next to the main
switch).
Replacement:
0.315 At 5 x 20 (100 - 200 V)
0.16 At 5 x 20 (200 - 240 V)
(If necessary, pull the fuse holder out using a 2-3 mm screwdriver to
replace the fuse element.)
3.5 Technical design
Depending on the technical design, device parts that come into contact
with the commodity stream consist of:
nfood-safe, anodised aluminium
npolyoxymethylene (POM)
npolytetrafluoroethylene (PTFE)
nglass
3.6 Speed
Constant, pre-set rotational speed of 100 rpm.
Technical data
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4 Installation
4.1 Transport
nThe device is packaged in a cardboard box. This is additionally pack-
aged in a wooden case with the accessories and any other devices,
depending on the scope of the order.
WARNING!
Improper lifting can lead to personal injury or property
damage. The machine is only to be lifted with suitable
equipment and by qualified personnel.
The guarantee excludes all claims for damage due to improper transport.
4.2 Unpacking
nIt is best to open the wooden case by pulling out the metal clips with
pliers.
nCarefully open the cardboard box with a knife (do not cut too deep,
as otherwise the contents could become damaged) and remove the
packaging material.
nCheck the device for possible damage in transit.
nCompare the contents of the delivery with your order.
4.3 Setting up
nPlace the rotary cone sample divider on a flat, stable surface.
nAdjust the rubber feet for levelling and to compensate for uneven
surfaces.
nIt does not have to be fastened to the surface.
nEnsure that the rotary cone sample divider is easily accessible.
Installation
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4.3.1 Fitting the dividing head
nPlace the dividing head onto the drive shaft protruding from the
housing.
nChecking: The dividing head must turn freely on the friction clutch by
hand.
4.4 Electrical connection
Disconnect the supply voltage prior to maintenance or
cleaning work.
Observe the accident prevention and safety regulations
which apply to the specific application cases.
Before the initial start‐up it should be checked whether the
nominal voltage of the device corresponds to the local
mains voltage.
Protective conductor connections must be checked for per‐
fect working order before the initial start‐up.
Connections may be established only by authorised per‐
sonnel.
The LABORETTE 27 is constructed according to the state of
the art and in accordance with the EC machinery directive
and recognized safety rules. However, the life and limb of
the user or third parties may still be endangered or the
device or other material assets impaired when using the
device.
Installation
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5 Initial start-up
After the rotary cone sample divider has been set up as described in
Ä Chapter 4 ‘Installation’ on page 15 and the mains plug has been
plugged into the mains socket, the device is ready for operation.
5.1 Switching on
Switch main switch to I. The rotary cone sample divider starts up.
The device will reach the pre-set rotational speed of 100 rpm after
approx. 10 seconds.
5.2 Switching off
Switch main switch to 0. The rotary cone sample divider stops turning
after a few seconds.
Initial start-up
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6 Using the device
6.1 General preparations
6.1.1 Screwing the glass laboratory bottles onto the 1:8 or 1:10 dividing head
1. Align the mark on the glass bottle with the mark on the bottle
holder.
2. Press the bottle into the recess in the bottle holder.
3. Screw the bottle firmly into the holder with approx. 1/4 turn in the
direction of the arrow.
After completion of the sample division, unscrew and
remove the glass bottles in the reverse order.
The sample bottles are screwed into the holders as for a
normal screw thread!
6.1.2 Division ratios
Dividing head with divi-
sion ratio
Maximum fill quantity
for one cycle
Maximum permitted
particle size
Partial amount per bottle
1 : 8 4000 ml 10 mm 12.5 %
1 : 10 2500 ml 10 mm 10 %
1 : 30 300 ml 2.5 mm 3.3 %
Using the device
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6.1.2.1 Division in the ratio 1 : 8
nScrew eight glass laboratory bottles into the dividing head (eight 250
mL or 500 mL bottles with GL55 glass screw thread, depending on
sample quantity).
nPlace the lid on the dividing head.
nInsert a suitable funnel.
Insert a funnel suitable for the sample. The diameter of the
funnel neck should be at least twice the particle size of the
sample.
6.1.2.2 Division in the ratio 1 : 10
nScrew 10 glass laboratory bottles into the dividing head (10 250 mL
bottles with GL55 glass screw thread, depending on sample quan-
tity).
nPlace the lid on the dividing head.
nInsert a suitable funnel.
n500 mL glass bottles cannot be used.
6.1.2.3 Division in the ratio 1 : 30
nScrew three sample bottles into the dividing head (three 15 mL, 20
mL or 30 mL bottles, depending on sample quantity).
nInsert and lock in place three collection pans (pull pin down, insert
pan and release pin) (see
Ä Chapter 6.4 ‘Taking samples’
on page 22).
nThe collection pans collect from 9 sample channels each with
approx. 30 % of the fill amount.
nPlace the lid on the dividing head.
nInsert a suitable funnel.
Using the device
- 19 -

6.1.3 Setting up the "LABORETTE 24" sample feeder
nPlace the feeder with V channel onto the stand such that the rubber
feet are located in the recesses (1) of the base plate provided for
them.
nAdjust the height of the stand (4) such that the feeder is located just
a few millimetres over the funnel and can be swung horizontally in
and out. To do this, release the stand by loosening the bolt (3).
nPosition the feeder and the stand so that the material stream is fed
into the centre of the funnel (2).
nAdjust the quantity of material flowing from the funnel into the feed
channel by adjusting the height of the funnel on the support column
(5).
nConnect the control device (6)
6.2 Dividing solid materials
Start feeding the material only when the rotary cone
sample divider is switched on!
nHinge the funnel holder (8) upwards
nPlace the lid (7) on the dividing head.
nInsert the funnel in position A (for solid materials).
nSwitch the rotary cone sample divider on.
(Final rotational speed of 100 rpm after approx. 10 seconds)
nManual feed:
–Feed the sample slowly and evenly into the funnel.
nMaterial feed using the "LABORETTE 24" vibratory feeder:
– Fill sample into the funnel of the feeder
– Adjust the feed rate (speed of material flow) on the control
device (6).
Using the device
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