Retsch DM 400 - Manual (Page 40)

Cleaning
40
WARNING!
Risk of poisoning and fire!
When using detergents which are flammable or harmful
to health, it is essential to heed the valid safety
regulations (TLV) and where applicable to clean the disc
mill in a ventilated safety zone.
6.3 Housing
The machine can be cleaned outside when switched off using a soft
damp cloth. A solution of water and mild detergent may be used here.
No not use a solvent for cleaning.
6.4 Cleaning the hopper
In special cases the hopper may also be removed and cleaned as
described in the chapter
“Replacing the grinding discs (5 + 6)”. When
grinding with the same sample, it is sufficient to clean the hopper of
dirt using a brush and dust extraction. For more intensive cleaning,
the protective grille can be removed by unscrewing 4 M3 countersunk
screws. Clean the hopper with the help of a damp cloth!
CAUTION!
Mount the grille again after cleaning!
Never operate the disc mill without hopper or hopper
grille!