Retsch DM 400 - Manual (Page 17)

Safety instructions and use
17
2.6 Safety equipment
Safety equipment must be used as intended and must
not be rendered unworkable or removed.
All safety equipment must be checked regularly for
completeness and function.
The disc mill has a comprehensive safety system:
1. A grille (4G) prevents contact with the fill hopper (4).
2. A sensor (i) monitors the closing of the grinding chamber before
operation and prevents the disc mill starting up after it has been
opened.
3. A second safety device checks whether the grinding chamber has
been closed by means of the motorised closing mechanism (8).
4G
i
8