FRITSCH PULVERISETTE 13 classic line - Manual (Page 36)

2. Open the grinding chamber.
3. Hold the fixed grinding disk tightly from the inside and remove the
fastening screws or fastening nuts.
4. Remove the fixed grinding disk and clean the surfaces. Reverse the
steps to insert the replacement grinding disk.
9.3.2 Exchanging the movable grinding disks
1. Open the grinding chamber.
2. To be able to remove the fastening screws (fastening nuts for
ZrO
2
) behind the movable grinding disk, this has to be moved far
forward.
3. To do this, remove the cover cap of the stop screw.
4. Remove the lock nut with a 13 mm spanner and turn the stop
screw back using a 4 mm hexagon socket screw key.
5. Use the rotary handle to turn the movable disk so far forward that
the coupling cover (9) is touching the housing.
6. Block the movable grinding disk.
Remove both fastening screws for the movable grinding disk with
a 30 mm spanner.
7. Hold the movable grinding disk tightly and remove the fastening
screws.
8. Remove the movable grinding disk and clean the surfaces. Reverse
the steps to insert the replacement grinding disk.
9. Move the movable grinding disk back again using the rotary
handle and close the grinding chamber.
NOTICE!
The movable grinding disk has to be moved back until
the two grinding disks no longer touch when closing.
Otherwise there is a risk that the grinding disks will
be destroyed.
10. Now the smallest gap width must be set, as explained in
Ä Chapter 6.1 ‘Setting the minimum gap width’ on page 22.
Maintenance
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