FRITSCH PULVERISETTE 15 - Manual (Page 32)

1. Open the closing lid.
2. Position the rotating knife with the smallest gap by pushing it in
the direction of the left fixed knife until the knives are edge-to-
edge.
3. Mark the rotating knife which was used for this purpose.
4. Unscrew the middle retaining screws of the knives on the exterior
of the housing.
5. Pull the knives out.
6. Unscrew the pressure screws completely.
7. Position the new fixed knives.
NOTICE!
The fixed knives have to be completely retracted
using the retaining screws.
8. If the fixed knives are positioned completely away from the rotor,
unscrew the retaining screws again.
Observe a gap width of 0.2 ‐ 0.3 mm between the
knife edges.
9. Use a 4 mm hexagon socket key to alternately move the rear and
front pressure screws parallel inward until at least a folded piece
of paper is slightly clamped between the fixed knife and the
marked rotating knife.
Make sure the fixed knives do not protrude on the
front side.
10. Now, fasten the fixed knives again with the retaining screw.
This may slightly increase the gap again. Then, the
retaining screws have to be loosened again slightly,
and the pressure screws have to be readjusted
slightly.
Maintenance
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