FRITSCH LABORETTE 24 with V-shaped channel - Manual (Page 23)

5.3 Conveying with the U-channel (standard)
The standard channel has a level outlet with a width of 40 mm.
Ideal results are achieved with this channel - in particular for large feed
quantities.
The standard channel is screwed onto the armature with four screws and
can be replaced easily with the V channel.
5.4 Conveying with the V-channel
The V channel has a V-shaped cross section.
The V channel can be used to create a narrow material flow, which, for
example, has to be fed specifically into a narrow opening.
Ideal results are achieved with this channel in particular for small and
very small amounts.
The V channel is screwed onto the armature with four screws and can be
replaced easily with the standard channel.
The tip of the corresponding funnel is shaped accordingly.
5.5 Set-up mode
The control system has been pre-set at the factory to the mechanical
natural frequency (resonance frequency) of the system (intensity=100%).
The control frequency in higher frequency ranges is moved away from
the resonance frequency by pressing the MINUS key - the feed rate
drops. If the feed rates which can be adjusted within this frequency
range are too high for you, you can readjust the control frequency range.
Empty the channel and then switch off the LABORETTE 24. Wait a few
seconds and switch on the LABORETTE 24 again with the STOP key
pressed. Keep on pressing the STOP key for a few seconds. When you
release the STOP key, you are in set-up mode.
Default values that are set in the factory settings are as follows:
n 230V ® 130 (=100%)
n 110V ® 70 (=100%)
The LABORETTE 24 runs at maximum feed rate in the resonance fre-
quency (intensity=100%). A number appears on the display. The control
frequency is raised by pressing the MINUS key to reduce this number.
Press the Stop key to assign the new control frequency the inten-
sity=100%. The control frequency is saved and set-up mode automati-
cally exited. The maximum feed rate is reduced and the resolution of the
feeding range is now finer.
If you now wish to re-assign the resonance frequency of the system (nat-
ural frequency) to the intensity=100%, proceed as follows.
Working with the LABORETTE 24
- 23 -