FRITSCH PULVERISETTE 5/4 classic line - Manual (Page 9)

2.2.1 Operating principle
The grinding stock is crushed and ground by grinding balls in 2 or 4
grinding bowls. The centrifugal forces from the rotation of the grinding
bowls around their own axis and from the rotating support disc act on
the contents of the grinding bowl which consists of material to be
ground and grinding balls.
The grinding bowl and the support disc have opposite directions of rota-
tion, so that the centrifugal forces alternate in the same direction and in
the opposite direction. The result is that the grinding balls run down the
inside of the bowl's wall as friction effect and the grinding balls hit the
opposite wall of the grinding bowl as impact effect. The impact effect is
amplified by the impact of the grinding balls against each other.
The loss-free comminution, even when grinding suspensions, is ensured
by the hermetic seal between the grinding bowl and the lid.
a Rotation of the grinding bowl
b Centrifugal force
c Movement of the support disc
2.2.2 Drive motor and speed regulation
A maintenance-free three-phase motor operated via a frequency con-
verter is used as the drive.
2.3 Obligations of the operator
Before using the PULVERISETTE 5, this manual is to be carefully read and
understood. The use of the PULVERISETTE 5 requires technical knowl-
edge; only commercial use is permitted.
The operating personnel must be familiar with the content of the oper-
ating manual. For this reason, it is very important that these persons
actually receive the present operating manual. Ensure that the operating
manual is always near the device.
The PULVERISETTE 5 may exclusively be used within the scope of applica-
tions set down in this manual and within the framework of guidelines
put forth in this manual. In case of non-compliance or improper use, the
customer assumes full liability for the functional capability of the PUL-
VERISETTE 5 and for any damage or injury arising from failure to fulfil this
obligation.
Safety information and use
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