FRITSCH PULVERISETTE 19 - Manual (Page 27)

The switch (19) on the back is not a main switch but rather
a control switch. Therefore the mains plug (20) must be
plugged out in order to safely disconnect the supply voltage.
CAUTION!
Never unlock the latch clamp (13) during operation!
Risk of severe and permanent damage to the rotor (3).
Initial start-up
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