Fritsch PULVERISETTE 15, Operating Instruction, Page: 14 / 19

pulverisette 15 page 11
4 Working with the Cutting Mill
4.1 Preparation for milling
4.1.1 Insert sieve
To insert the sieve, open the mill cover and insert the sieve
from the front or loosen the knurled knob on the left side,
open the upper housing halves and insert the sieve.
The welded part of the sieves have to fit left justified in the
grinding chamber, i. e. the openings of the trapezoidal per-
foration are directed to the rotationing rotor.
Close the housing halves and screw the knurled knob tight.
Turn the cutting rotor carefully by hand. The rotor must turn
freely. If this is not the case, see sections
4.1.2 Checking the
blade gap and 6.1 Removal and fitting of cutting blades .
Attention: danger of injury from sharp blades
4.1.2 Checking the blade gap
The rotating blades must not touch the fixed blades – the
gap between them is set at works:
0.2 - 0.3 mm for fixed blades
The rotating blades must be set parallel
to the fixed blades.
Turn the cutting rotor carefully by hand.
Attention: danger of injury from sharp blades
If the rotor cannot be turned, see section 6.1 Removal and fitting
of cutting blades .
4.1.3 Closing the cutting mill
Before closing the mill cover, please check:
•
that the cutter rotor and sieve are firmly seated,
•
that the conical guide on the cutting rotor is clean,
•
that the conical guide in the mill cover is clean.
Close the mill cover and screw fast with the knurled knob –
the safety switch should be actuated.