Retsch GM 300 - Manual (Page 31)

Working instructions
31
6 Working instructions
Four sharp, sturdy blades rotate in the centre of the grinding container. Depending
on the direction of rotation, cutting is done with the blunt side (preliminary size
reduction) or with the sharp side (fine size reduction). To protect the knife from
damage from hard material, the knife are equipped with a counterblade.
The powerful industrial motor with 1500 watts in continuous duty or 3000 watts in
brief peak performance drives the knife indirectly. Preprogrammable speeds that
are electronically maintained at a constant level allow a high level of reproducibility.
7 Fault messages
F01 Overload
F03
Problem in the safety circuit for the lid lock
Service required!
F04
Lid opening or closing. Otherwise lid lock
is defective.
Service required!
F07 Motor control is defective Service required!
F08 Please enter grinding time
F09
Housing fan not working.
Service required!
F14
Speed sensor defective.
Service required!
F15
Problem in the safety circuit for the
frequency converter
Service required!
F16 Motor is overheated. Can’t start. Let the motor cool down.
F17
Motor switched off due to overheating.
Press stop.
Let the motor cool down.
F18
Problem in the safety circuit for the
transformer Service required!
F19 Knife not rotating. Service required!
F26
Frequency converter is overheated. Can ’t
start.
Let the frequency converter
cool down.