8 electrical safety, 1 general information, 2 protection against restart – FRITSCH PULVERISETTE 9 User Manual
Page 15: 3 overload protection
2.8 Electrical safety
2.8.1 General information
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After the STOP key (f) is pressed, the vibrating cup mill runs out.
Once the motor stands still, the hood (1) can be opened.
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When using the grinding set made of agate, the speed is limited
automatically to 750 rpm.
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Switch off (0) the main switch (6) if the mill will be idle for a longer
period of time (e.g. overnight).
2.8.2 Protection against restart
In case of power failure during operation or after disconnecting from the
mains, the hood (1) is locked. The hood lock (4) is automatically released
when power returns.
For safety reasons, the vibrating cup mill does not restart by itself.
2.8.3 Overload protection
In case of an overload of the vibrating cup mill, a motor current monitor
reduces the speed automatically or in case of a blockage, the drive
switches itself off directly.
Safety information and use
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