Retsch RM 200 User Manual

Operating Instructions for Mortar Mill RM200

 Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany 11/6/2012 00023

Notes on these operating
instructions

These operating instructions for the mortar mill, type RM200,
give all the necessary information on the areas mentioned in the
contents.

They instruct the target group(s) for each of the defined areas, in
order to ensure safe handling of the RM200 when used for the
intended purpose. Knowledge of the relevant section is an
essential precondition for safe, proper use of the machine.

This technical documentation is a reference work and also a set of
teaching instructions. The individual sections are complete in
themselves.

These operating instructions do not include instructions for
repairs. In case of possible defects or necessary repairs please
contact your suppliers or Retsch GmbH direct:

Retsch GmbH www.retsch.com

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Notes on these operating instructions ..................................... 2

Safety ...................................................................................... 4

Safety instructions ............................................................................ 4

Warning signs ................................................................................... 5

Repairs ............................................................................................ 5

Confirmation .................................................................................... 8

Technical data ......................................................................... 9

Use according to the intended purpose ................................................ 9

Emissions ......................................................................................... 9

Protective system: IP53 .................................................................... 9

Rated power: 230 Watt ..................................................................... 9

Machine dimensions .......................................................................... 9

Required floor space .......................................................................... 9

Transport and installation ..................................................... 10

Packing .......................................................................................... 10

Transport ....................................................................................... 10

Intermediate storage ....................................................................... 10

Conditions for the place of installation ............................................... 11

Installation ..................................................................................... 11

Electrical connection ........................................................................ 11

Operation .............................................................................. 12

Operating elements and operation ..................................................... 12

Operating elements and their function ............................................... 13

View of milling chamber ................................................................... 15

Installing / changing the milling fittings ............................................. 16

Installing or changing the mortar ...................................................... 16

Installing or changing the pestle ....................................................... 17

Adjusting the pestle ........................................................................ 18

Adjusting the pestle pressure ........................................................... 18

Adjusting the Scraper to the Mortar ................................................... 19

Adjusting the contact pressure .......................................................... 20

Checking the scraper setting ............................................................ 21

Control milling operation .................................................................. 21

Adjusting the milling time ................................................................ 21

Stopping the milling process ............................................................. 23

Replacing the machine fuses ............................................................. 23

Working instructions ............................................................. 24

General .......................................................................................... 24

Materials ........................................................................................ 24

Crushing, mixing and milling of samples with grain size < 3mm ............ 25

Crushing, mixing and milling materials of grain size > 3 mm ................ 26

Security advice for handling liquid nitrogen ........................................ 27

Safety functions and fault displays ........................................ 28

Safety functions .............................................................................. 28

General ................................................................................. 29

Cleaning ........................................................................................ 30

Maintenance ................................................................................... 30

Accessories RM200 .......................................................................... 30

Wear ............................................................................................. 31

Readjusting the lock pre-tensioning ................................................... 31

Wearing parts ................................................................................. 31

Checks ........................................................................................... 31

Copyright ....................................................................................... 31

Alterations ..................................................................................... 31

Summary of safety regulations for the RM200..................................... 32

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Safety

We exclude any claims for damages of any kind for
injury to persons and damage to equipment arising
from non-observance of the following safety
instructions.

Target group: All persons concerned with the

machine in any way.

The RM200 is a modern, highly efficient product of Retsch
GmbH, corresponding to state of the art. If the machine is
used according to the intended purpose with a knowledge of
this technical documentation it is completely safe and reliable
to operate.

Safety instructions

As the operating authority it is your duty to ensure that all

persons charged with working on the RM200:

 have read and understood all the instructions on

safety,

 before beginning work know all the instructions

and regulations for the target group relevant to
their work,

 have access to the technical documentation for

this machine at all times, without problems.

 New personnel should be familiarized with safe,

proper handling of the machine before beginning
work on the RM200, either by verbal instruction
from a competent person or through this
technical documentation.

 Improper operation can cause injury to persons

or damage to the equipment. You are responsible
for your own safety and that of your employees.

 Ensure that no unauthorised persons have access

to the RM200.

For your own protection have your employees confirm that
they have been instructed in operation of the RM200. The draft
of a suitable form is given at the end of the section on safety.

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Warning signs

Injury to persons

Damage to equipment

Observe instructions for use

The Retsch agency in your country

Your supplier

Retsch GmbH directly

______________________________________

______________________________________

______________________________________

______________________________________

Warnings are given by the following signs:

Repairs

These operating instructions do not include repair instructions.
For your own safety repairs must be carried out only by Retsch
GmbH or an authorised agent (service technicians).

In this case please contact:

Your service address:

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Safety instructions

We exclude any claims for damages of any kind for injury to persons and damage to equipment arising
from non-observance of the following safety instructions.

Do not make any alterations to the machine and use only spare parts and accessories approved by
Retsch.Otherwise the Declaration of Conformity with the European Directives by Retsch loses its
validity.Furthermore this will result in the loss of any kind of guarantee claim.

Please keep the packing material for the duration of the guarantee period since if there is a complaint and
the machine is returned with inadequate packing your guarantee claim will be at risk.

The RM200 must not be knocked, shaken or thrown during transport. Otherwise the electronic and
mechanical components can become damaged.

If temperature variations are high (e.g. during air transport) the RM200 must be protected against
condensed water. Otherwise the electronic components can become damaged.

If the delivery is incomplete and / or there is transport damage you must inform the transporter and
Retsch GmbH immediately (within 24 hrs). Later complaints may possibly be no longer considered.

If the ambient temperature drops below or exceeds these values the electronic and mechanical
components can become damaged and performance data are changed to an unknown extent.

At higher atmospheric humidity the electronic and mechanical components can become damaged and
performance data are changed to an unknown extent.

If the values on the type plate are not observed this can result in damage to the electrical and mechanical
components.

Ensure that the mortar has engaged properly in the groove of the plate.Otherwise the mortar will be
damaged when starting the machine.

When removing and opening heated milling cups protective gloves must be worn.Danger of burning the
hands.

Make sure that the pestle is locked in position. Otherwise it may fall out when the lid is closed and
damage the mortar.

The scraper can become sharp-edged as a result of sanding and wear during grinding operations. During
cleaning in particular there is a risk of injury.

If the scraper pressure is set too high this causes rapid wear of the scraper and contamination of the
material to be milled through the scraper material.

If the scraper pressure is set too high this increases the motor load and can cause triggering of the
overload protection switch on the rear side of the machine.

The milling operation can be started only if the lid is closed.

Use according to the intended purpose

Packing

Transport

Temperature variations

Supplied items

Conditions for the place of installation

Electrical connection

Installing or changing the mortar

Installing or changing the pestle

Adjusting the Scraper to the Mortar

Adjusting the scraper contact pressure

Adjusting the milling time

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Please take all necessary measures, depending on the dangerousness of your sample, to prevent danger
to persons.

Please note that the properties, and therefore the dangerousness of your sample, can change during the
milling process.

General

Observe the relevant regulations and guidelines of your country for handling chemicals and hazardous
materials. These should be applied when working with the RM200.

Milling of materials with a risk of fire or explosion in the RM200 is prohibited.

Please take the necessary measures, depending on the dangerousness of your sample, to avoid danger to
persons.

Please not that the properties, and therefore the dangerousness of your sample, can change during the
milling operation.

Do not charge the materials in batches. The mortar and pestle can become blocked, so that the motor is
switched off by the controller to protect it from burning out.

Do not push material through the opening under the cover I with your fingers. Fingers can be squeezed.

Do not introduce any objects through the openings I + J. The mortar, pestle and scraper can become
damaged and there is a possible danger of injury.

Do not add the material in batches. The mortar and pestle can become blocked, which leads to switching
off of the machine.

Do not push material through the opening under the cover I with your fingers. Fingers can be squeezed.

Safety goggles and protective gloves should always be worn when handling liquid nitrogen. Liquid
nitrogen has a temperature of –196 °C and, if it comes into contact with the skin or eyes, may cause
injuries similar to burns or frostbite.

A funnel must be used to fill cooling liquid into the RM 200. Otherwise the cover might be damaged.

Please observe the security advice of the liquid nitrogen supplier. Retsch excludes any liability claims
which may result from the use of liquid nitrogen or similar substances.

Do not clean the RM200 with running water. Danger to life through current surgeUse only a cloth
moistened with water. Cleaning agents and solvents must not be used – not for cleaning the milling tools
either.

Do not carry out any modification of the machine and use only spare parts and accessories approved by
Retsch. Otherwise the declared Conformity with the European Directives by Retsch will lose its validity.
Furthermore this will lead to loss of any kind of guarantee claims.

These operating instructions do not include repair instructions. For your own safety repairs should be
carried out only by Retsch GmbH or an authorised agency and service technicians.

Materials

Crushing, mixing and milling of samples with grain size < 3mm

Crushing, mixing and milling materials of grain size > 3 mm

Security advice for handling liquid nitrogen

Cleaning

Accessories RM200

Wearing parts

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Confirmation

I have taken note of the section „Notes on these

operating instructions” and the section on “Safety”.

_______________________________________

Signature of operating authority

_______________________________________

Signature of service technician

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Technical data

Do not make any alterations to the machine and use only
spare parts and accessories approved by Retsch.

Otherwise the Declaration of Conformity with the
European Directives by Retsch loses its validity.

Furthermore this will result in the loss of any kind
of guarantee claim.

Target group: Operating authority, operators
Machine type designation: RM200

Use according to the intended purpose

This machine is not designed as a production machine but as
laboratory equipment, intended for an 8 hours single shift
operation with 30% operating time.

The RM200 is suitable for dry and wet milling of soft, medium
hard, hard, pasty and brittle materials, up to a hardness of 9
on the Mohs’ scale.

Furthermore quantities of approx. 10 to 190 ml and a max.
charging grain size of 8 mm can be ground and homogenised
with the RM200, without manual use of force.

A final fineness of down to 0.01 mm (10 µm), and in individual
cases even below this value, can be achieved with the RM200.

Emissions

Noise characteristic values :

Noise measurement according to DIN 45635-031-01-KL3
Intensity of sound LWA = 85 dB(A)

Emission value related to workplace L

Operating conditions:

Material to be milled = quartz sand, grain size < 1 mm

Protective system: IP53

Rated power: 230 Watt

Machine dimensions

Height: 480 mm up to approx. 550 mm with lid opened
Width: 400 mm
Depth : 370 mm up to approx. 510 mm with lid opened

= 72 dB(A)

pAeq

Weight: approx. 24 kg without mortar and pestle

Required floor space

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400 mm x 400 mm plus space at the rear for the opened
lid. No safety distance required.

Transport and installation

Please keep the packing material for the duration
of the guarantee period since if there is a
complaint and the machine is returned with
inadequate packing your guarantee claim will be
at risk.

The RM200 must not be knocked, shaken or
thrown during transport. Otherwise the electronic
and mechanical components can become
damaged.

If temperature variations are high (e.g. during air
transport) the RM200 must be protected against
condensed water. Otherwise the electronic
components can become damaged.

Target group: Operating authority, transporter,

operators

Packing

Packing is adapted to the transport route and
conforms to generally applicable packaging guidelines.

Transport

Temperature variations

Intermediate storage

Ensure that the RM200 is also stored dry during
intermediate storage.

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Conditions for the place of installation

If the ambient temperature drops below or
exceeds these values the electronic and
mechanical components can become damaged
and performance data are changed to an
unknown extent.

At higher atmospheric humidity the electronic
and mechanical components can become
damaged and performance data are changed
to an unknown extent.

If the values on the type plate are not observed this
can result in damage to the electrical and mechanical
components.

Ambient temperature:
5°C to 40°C

Atmospheric humidity:
Maximmum relative humidity 80% at temperatures up

to 31°C,
decreasing linearly down to 50% relative humidity at

40°C.

Installation height:

max. 2000 m above sea level

Installation

Mount the RM200 only on a firm, stable laboratory
bench since otherwise vibrations can be transmitted.

Electrical connection

 Voltage and frequency for the RM200 are given

on the type plate.

 Ensure that these values correspond to the

available power supply system.

 Connect the RM200 to the power supply system

using the supplied connection cable.

 Protection by external fusing is to be used when

connecting the mains cable to the power supply,
according to the regulations at the place of
installation.

 The voltage supply to the RM200 must be

provided with a fault-current circuit breaker (FI
switch).

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