FRITSCH PULVERISETTE 7 premium line - Manual (Page 9)

1.2.1 Operating principle
a Rotation of the grinding bowl
b Centrifugal force
c Rotation of the support disc
The source material is crushed and ground by grinding balls in a grinding
bowl. The centrifugal forces from the rotation of the grinding bowls
around their own axis and from the rotating support disc have an effect
on the contents of the grinding bowl, consisting of material to be ground
and grinding balls.
The grinding bowl and the support disc have opposite directions of rota-
tion, in order 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
with a friction effect and the grinding balls hit the opposite wall of the
grinding bowl with an impact effect.
1.2.2 Drive motor and speed regulation
A maintenance-free electric motor operated via frequency converter is
used as the drive.
1.3 Obligations of the operator
Before using the the PULVERISETTE 7 premium line, this manual is to be
carefully read and understood. The use of the the PULVERISETTE 7 pre-
mium line requires technical knowledge; only commercial use is per-
mitted.
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 the PULVERISETTE 7 premium line may exclusively be used within
the scope of applications set down in this manual and within the frame-
work of guidelines put forth in this manual. In case of non-compliance or
improper use, the customer assumes full liability for the functional capa-
bility of the PULVERISETTE 7 and for any damage or injury arising from
failure to fulfil this obligation.
By using the the PULVERISETTE 7 premium line the customer agrees with
this and recognizes that defects, malfunctions or errors cannot be com-
pletely excluded. To prevent risk of damage to persons or property or of
other direct or indirect damage, resulting from this or other causes, the
customer must implement sufficient and comprehensive safety meas-
ures for working with the the PULVERISETTE 7 premium line.
Safety information and use
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