12/20/2016 7 Retsch GmbH
Safety instructions for handling liquid nitrogen
Always wear protective goggles and protective gloves when handling liquid nitrogen.
Liquid nitrogen has a temperature of –196°C and can cause frostbite or injury similar to burns if it comes
into contact with the skin or eyes.
Follow the safety regulations of the cooling liquid supplier.
Retsch GmbH accepts no liability whatsoever arising from the use of liquid nitrogen or similar materials.
Do not clean the MM 400 under running water. Danger to life through current surge.
Use only a cloth moistened with water. Cleaning agents and solvents should not be used – not for
cleaning the milling tools either.
Accessories for the MM 400
Do not make any alterations to the machine and use only spare parts and accessories approved by
Retsch.
Otherwise the Declaration of Conformity with European directives made by Retsch will lose its validity.
Furthermore this will also lead to the loss of any guarantee claims.
These operating instructions do not include any repair instructions. For your own safety repairs should be
carried out only by Retsch GmbH or an authorised agent (service technicians).
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