Retsch RM 200 - Manual (Page 7)

11/6/2012 7  Retsch GmbH 0002
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.
Materials
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.
Crushing, mixing and milling of samples with grain size < 3mm
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.
Crushing, mixing and milling materials of grain size > 3 mm
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.
Security advice for handling liquid nitrogen
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.
Cleaning
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.
Accessories RM200
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.
Wearing parts
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.