FRITSCH PULVERISETTE 19 - Manual (Page 24)

If the STOP button lights up red after connection 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.
DANGER!
Changes to the connection line may only be made by a
qualified person.
Installation
- 24 -