FRITSCH PULVERISETTE 19 - Manual (Page 17)

n After checking if the rotor (3) is turning freely (Ä Chapter 6.1.7
‘Checking if the rotor is turning freely’ on page 34), the required hex-
agon socket screw key must be removed immediately.
2.8 Electrical safety
2.8.1 General information
n 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.
n Switch the control switch (19) on the back of the Universal Cutting
Mill to 0, if the device is to be idle for a longer period of time (e.g.
overnight).
2.8.2 Protection against restart
In the case of power failure during operation or after switching off with
the control switch (19), the closing lid (6) is locked. The lock (11) is
opened when power returns. However, for safety reasons the cutting
mill does not restart.
2.8.3 Direction of rotation detection
A unit for detection of the direction of rotation is installed in devices
with a three-phase motor:
If the STOP button (35) lights up red after connecting to a three-phase
power system and switching the control switch (19) to AUTO, the direc-
tion of rotation must be corrected. To do this, two phases in the mains
plug must be reversed. Ä Chapter 4.7 ‘Electrical connection’ on page 23.
2.8.4 Overload protection
n The motor protection switch switches off if overload occurs.
Ä Chapter 6.4 ‘Overload of the cutting mill’ on page 37. The STOP
button lights up red.
Safety information and use
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