Retsch GM 200, Manual

Page: 34 / 60

Controlling the Device
34
Fig. 11: Rotary knob
Process time (B2.2):
The process time indicates the total duration of the grinding process. Via the rotary knob, a
process time between 0:01 and 3:00 (m:ss) can be set. The process time between 0:01 and
0:30 can be set in steps of 1 second, the process time between 0:30 and 3:00 in steps of 5
seconds. After the grinding process is started, the process time continuously counts down to
0:00. When the interval function is activated, the process time includes both, the interval times
and the pause times.
Speed (B2.1):
The speed (revolutions per minute, rpm) can be set via the rotary knob. The speed range
depends on the direction of rotation:
Icon Direction of rotation Speed range
Counterclockwise (cutting) 2
000 – 10 000 rpm, adjustable in
steps of 500 rpm
Clockwise (hit and impact
grinding) 2
000 – 4 000 rpm, adjustable in
steps of 500 rpm
A short-time increase in speed to approx. 14
000 rpm can be achieved with the boost function
during the grinding by cutting.
B4