Laarmann LM250 User manual

USER'S MANUAL
LAARMANN LM250/LM1000
Edition Month Year
1. September 2012

MANUAL LM250/LM1000
2
TABLE OF CONTENTS
1. SAFETY INFORMATION........................................................................................3
1.1. WARNING SYMBOLS..........................................................................................3
1.2. SAFETY INSTRUCTIONS....................................................................................3
2. GENERAL DESCRIPTION......................................................................................5
3. TECHNICAL FEATURES........................................................................................6
3.1. CONSTRUCTION.................................................................................................6
3.2. TECHNICAL DATA...............................................................................................6
4. INSTALLATION ......................................................................................................7
4.1. UNPACKING........................................................................................................7
4.2. SELECTING THE RIGHT PLACE........................................................................7
4.3. CONNECTING THE POWER CORD ...................................................................7
4.4. ENVIRONMENT CONDITIONS............................................................................7
5. INSTRUCTIONS FOR USE.....................................................................................8
5.1. OVERALL VIEW...................................................................................................8
5.2. CONTROL PANEL DESCRIPTION......................................................................9
6. WORKING INSTRUCTIONS.................................................................................13
6.1. GENERAL ..........................................................................................................13
6.2. STARTING THE MILLING PROCESS................................................................13
6.3. STOPPING THE MILLING PROCESS...............................................................13
7. TROUBLESHOOTING..........................................................................................14
8. MAINTENANCE....................................................................................................14
8.1. WEAR.................................................................................................................14
8.2. CLEANING.........................................................................................................14
9. CE CERTIFICATE.................................................................................................15

MANUAL LM250/LM1000
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1. SAFETY INFORMATION
Before using the machine, make sure to read and understand this manual
thoroughly. Keep the manual close to the machine, easily accessible to all the users.
Improper operation can cause injury to persons or damage to the equipment.
1.1. WARNING SYMBOLS
The following are the warning symbols that are used in this manual.
This symbol indicates a potential risk and alerts you to proceed with
caution.
This symbol indicates the presence of high voltage and warns the user
to proceed with caution.
This symbol indicates risks associated with hot surfaces.
1.2. SAFETY INSTRUCTIONS
Safety instructions
Claims for damages in any form whatsoever, for injury to persons or
damage to the machine, caused through non-observance of the
following safety instructions, are excluded.
Use according to the intended purpo
se
Do not make any alterations to the machine and use only approved
spare parts and accessories. Otherwise the Declaration of Conformity
will lose its validity and this will also lead to the loss of any guarantee
claims.
Transport
Do not knock, shake or throw the LM250/LM1000 during transport.
Otherwise the electronic and mechanical components may be damaged.
Packing material
Please keep the packing material for the duration of the guarantee
period. In case of a complaint and return of the machine in unsuitable
packing material, your guarantee claim will be lost.
Temperature variations
If the LM250/LM1000 is subjected to high temperature variations, protect
it against condensed water. Otherwise the electronic components may
be damaged.
Ambient temperature
If the temperature drops below +5°C or exceeds +40°C, electronic and
mechanical components can be damaged. Performance can be
changed to an unknown extent.

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Atmospheric humidity
If the humidity exceeds 85%, electronic and mechanical components
can be damaged. Performance can be changed to an unknown extent.
Electrical connection
If the values for the mains power supply on the name plate are not
observed, the electrical and mechanical components may be damaged.
Inserting grinding media
Ensure that the grinding media are inserted correctly in the machine.
Otherwise they can be damaged, when starting the machine
Removing and opening hot grinding media
When removing and opening hot grinding media, always wear protective
gloves. There is a danger of burning the hands
Materials
Observe the relevant regulations and directives for handling chemicals
and hazardous materials.
Milling of materials, which give a risk of fire or explosion, is prohibited.
Cleaning
Do not clean the LM250/LM1000 under running water. Danger to life
through electric shock.
Use only a soft cloth moistened with water. Cleaning agents and
solvents should not be used, not for cleaning the milling tools either.
Repair
For your own safety, repairs must be carried out only by authorized
service technicians.

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2. GENERAL DESCRIPTION
The LM250/LM1000 is a laboratory machine, which is suitable for pulverizing and
homogenizing hard and brittle materials in the dry and wet state.
It is used for fast pulverizing.
The closed milling pulverizing system guarantees complete recovery of the samples.
Final finenesses of down to 20-40 μm can be achieved, depending on the milling time
and the specific properties of the sample material. The optimum filling of a
LM250/LM1000 is around 1-1.3 Liters of sample material.
The sample quantity should not be less than 25% of the bowl volume.
The puck may otherwise damage the bowl.
The bowl, puck and lid must always be made of identical material.
3. TECHNICAL FEATURES
3.1. CONSTRUCTION
The housing of LM250/LM1000 is made of steel plate with powder coated RAL5005
paint.
Protective equipment
The milling chamber of the LM250/LM1000 is safely closed by an electrical safety
switch.
Starting of the machine is possible only when:
- power is connected;
- air pressure is sufficient;
- the emergency switch is not activated;
- all parameters are given to the digital program of the machine.

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3.2. TECHNICAL DATA
Power supply 380V ± 10% - 50/60Hz
Rated power 1500W
Timer 5 sec - 99 min, timer HOLD function,
in 1 sec steps (below 10 min),
or 10 sec steps (above 10 min)
Max. bowl volume 250-1000 ml
Dimensions W x D x H
(inclusive base plate) 550 x 602 x 1032 mm
Weight 210 kg
Noise emission
(without milling bowl) 70 dB(A)
Ambient temperature +5°C - +40°C
Atmospheric humidity < 85% RH
4. INSTALLATION
4.1. UNPACKING
Before the installation, carefully examine the delivery for possible damage or missing
parts. Open the crate and take the machine out of the box. Check that the machine
has not been visibly damaged during the transport.
Please keep the packing material for the duration of the guarantee period. In case of
a complaint and return of the machine in unsuitable packing material, your guarantee
claim will be lost.
Check that the mains cord is compatible with the local standard.
If any kind of damage occurred during transport, immediately make a complaint to
the carrier. Any incorrect delivery or missing parts should be reported to the
distributor.
Release the orange fixing cord.

MANUAL LM250/LM1000
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4.2. SELECTING THE RIGHT PLACE
When selecting the right place for the machine, please consider the following:
- Put the device on smooth, horizontal and stable place.
- Leave enough space beyond the device for normal air circulation, min. 200 mm at
the back of the machine.
- Leave enough space around the device, that you will easy control and maintain it.
- Don’t use the device in surroundings, where there are fast temperature and
humidity changes. Also avoid places exposed to direct sunlight and places nearby
heating devices.
- Avoid places, where the possibility of shocks and vibrations exists.
Note: The machine should not be placed so, that it is difficult to pull out the
cord plug from mains power supply.
4.3. CONNECTING THE POWER CORD
The correct voltage and frequency for the LM250/LM1000 are given on the name
plate. Ensure that these values correspond to the available power supply system.
Fit one end of the power cord, included in the delivery, into the mains socket on the
machine. Connect the other end of the cord to a grounded wall socket.
To avoid interference from noise, surges and spikes, a dedicated line is preferred. If
no such line is available, avoid lines to which powerful electric motors, refrigerators
and similar devices are connected.
The power can be turned on and off by the emergency switch, located on the front
cover at the right side of the machine. Light in the switch indicates, when the power is
on.
4.4. ENVIRONMENT CONDITIONS
The machine has been built for operating in laboratory environment. Therefore the
environmental conditions should be the following:
- Temperature from +5°C to +40°C
- Humidity up to 85% RH, non-condensing

MANUAL LM250/LM1000
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5. INSTRUCTIONS FOR USE
5.1. OVERALL VIEW

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5.2. CONTROL PANEL DESCRIPTION
Start screen, press any key (LM250/LM1000)
Do not use any of the function keys except the F1 to F4 function keys.
The other keys are for programming and using these can result in malfunction.
Choose manual or automatic
F3: Hand/Manual
F1: Automatic
If shown: please open lid after notification
Please follow instructions on display if shown.
F1: Turn on machine
F2: Stop the machine
F3: Open Lid, to release safety switch
F4: Back

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F1: Running
F2: Machine off
F3: Open lid
F4: Back
If shown please check air pressure.
Display shows number of minutes.
F3 and F4 is to adjust.
F3: number of minutes up
F4: number of minutes down.
5: number of minutes
F1: Next screen.
Total time in seconds. F3 and F4 is to adjust.
F3: number of seconds up.
F4: number of seconds down.
30 = number of seconds
F1: Next screen

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Interval adjustment F3 and F4.
0 = Off
1 = Number of minutes
F1: Next screen.
Delay time between intervals in seconds.
F1: next screen.
Changing the rotation of the motor Y/N.
F3: On.
F4: Off.
F1: Next Screen.
Total running time pulveriser, inclusive stop/start with interval.
F1: Open lid
F3: Start cycle

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Countdown Function.
F4: to stop

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6. WORKING INSTRUCTIONS
6.1. GENERAL
The LM250/LM1000 is a high performance product. It is used mainly in the
processing minerals.
6.2 STARTING THE MILLING PROCESS
• Set the parameters as described before
• Open the lid of the machine and put in the sample on top of the puck in the bowl
• Pull the handle with the air bag clamp and lock it by pulling
• Close the machine lid and press start on the display.
The milling process can only be started, when the hood is closed, the
power is connected and when the air pressure is high enough.
Do not open the hood during the milling process, also not by force.
Do not mill inflammable or explosive samples! For these kind of
samples, please contact LAARMANN for special features.
Please note that the properties and therefore the dangerous nature of
your sample, can change during the milling process.
6.3 STOPPING THE MILLING PROCESS
• Stop the milling operation by pressing the emergency switch.
Or
• When the milling time elapses, the milling process is automatically ended. The
display is reset to the last set value.
When removing and opening the bowl, always wear protective gloves.
There is a danger of burning the hands.

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7. TROUBLESHOOTING
Problem
Explan
ation / Solution
Machine is not starting Check the mains power supply.
Check the air pressure
Call the emergency knob and release it.
Display doesn’t work. Call authorized service.
8. MAINTENANCE
LM250/LM1000 needs to be greased first time after 20 hours.
Later intervals each 40 Hours.
LAARMANN advises to use LAARMANN GREASE. Similar can be graphite free, high
temperature grease.
8.1. WEAR
The milling tools can become worn out, depending on the frequency of the milling
operation and the milled material. The milling bowl, lid and puck should be regularly
checked for wear and replaced, if necessary.
8.2. CLEANING
Before cleaning the machine, unplug the mains cord from wall socket.
Use only a soft cloth moistened with water. Cleaning agents and
solvents should not be used, not for cleaning the milling tools either.
Do not clean the LM250/LM1000 under running water. Danger to life
through electric shock.

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9. CE certificate
LAARMANN
Pulveriser
T
ype
LM250/LM1000
Product Pulveriser
Model LM250/LM1000
Power supply 400V/50Hz
This declaration of conformity confirms compliance of the above mentioned equipment
to the relevant sections of the following European Directives:
91/368EWG European machine guideline
73/23/EWG EC Low Voltage Guidelines
EN 292, 294, 418 Safety guidelines
VBG 1,4,5 en 22 General electrical facitilies
89/336/EEC Electromagnetic Compatibility Directive (EMC)
EN 5008-1-1992 Emissions
EN 50082-1-1992 Immunity
EN 60204-1 Part 1 Safety of Machinery – Electrical Equipment of Machines
WARNING:
This equipment is required to be operated strictly in accordance with the instructions given in
the operating manual supplied with the product. All supply voltages and frequencies as stated
on the rating plate must be used. External power cables and connectors must be supplied by
LAARMANN. Any additional equipment used must be of a type approved by LAARMANN.
This conformity certificate will lose its validity in case of:
•Usage of unlicensed spares
•Usage of unlicensed accessories
•Any self made modifications of the machine
LAARMANN GROUP B.V. Roermond, June 2015
Marc van Daal