FRITSCH PULVERISETTE 13 premium line - Manual (Page 39)

9.1 Grinding disks
The grinding disks wear down after a certain time, depending on the
material being crushed. Check their surfaces in regular intervals. For
changing the direction of rotation or exchanging the disks, observe the
information in Ä Chapter 6.5 ‘Revers mode’ on page 28 and as follows in
Ä Chapter 9.2 ‘Exchanging the grinding disks (5 + 6)’ on page 39.
9.2 Exchanging the grinding disks (5 + 6)
CAUTION!
The device has to be connected to the mains to open the
grinding chamber and adjust the gap width.
CAUTION!
– Crushing hazard when exchanging the grinding disks.
– Secure the grinding disks against falling while
exchanging them.
CAUTION!
Clean the holder and the back of the disks thoroughly
before installing the new disks. This is very important in
particular when employing the ZrO2 disks as well as the WC
+Co disks, so that the disks are seated without tension and
parallel to each other.
When using the zirconium oxide grinding disks:
When tightening the nuts, it is important that the tight-
ening torque is not too great (see table) and is the same for
both nuts.
The ZrO2 grinding disks come with rubber washers (u) that
are placed under the steel washers. The nuts are tightened
then until the rubber washer is slightly squeezed out by the
steel washer. Thus a tightening torque of approx. 20 Nm is
ensured.
Maintenance
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